✨ feat(mqtt): 新增 MQTT 数据源连接与测试发消息支持

frontend/src/components/ConnectionModal.edit-password.test.tsx

@@ -33,10 +33,10 @@ describe('ConnectionModal data source registry', () => {
     expect(source).toContain('type === "elasticsearch"');
     expect(source).toContain("return '支持索引浏览、Mapping 检查、JSON DSL 和 query_string 查询';");
     expect(source).toContain(
-      'type === "clickhouse" ? "default" : (type === "redis" || type === "elasticsearch" || type === "chroma" || type === "qdrant" || type === "kafka" || type === "rabbitmq") ? "" : "root";',
+      'type === "clickhouse" ? "default" : (type === "redis" || type === "elasticsearch" || type === "chroma" || type === "qdrant" || type === "mqtt" || type === "kafka" || type === "rabbitmq") ? "" : "root";',
     );
     expect(source).toContain(
-      'placeholder={(dbType === "elasticsearch" || dbType === "chroma" || dbType === "qdrant" || dbType === "kafka" || dbType === "rabbitmq") ? "未开启认证可留空" : undefined}',
+      'placeholder={(dbType === "elasticsearch" || dbType === "chroma" || dbType === "qdrant" || dbType === "mqtt" || dbType === "kafka" || dbType === "rabbitmq") ? "未开启认证可留空" : undefined}',
     );
     expect(source).toContain('label="显示数据库 (留空显示全部)"');
   });
@@ -77,6 +77,19 @@ describe('ConnectionModal data source registry', () => {
     expect(source).toContain('return "fetchSize=1024&timeZone=Asia%2FShanghai";');
   });
 
+  it('exposes MQTT in the create-connection picker with broker and topic-filter defaults', () => {
+    expect(source).toContain("case 'mqtt':");
+    expect(source).toContain('return 1883;');
+    expect(source).toContain('mqtt: ["mqtt", "mqtts", "tcp", "ssl", "tls"]');
+    expect(source).toContain("key: 'mqtt'");
+    expect(source).toContain("name: 'MQTT'");
+    expect(source).toContain('dbType === "mqtt"');
+    expect(source).toContain("return 'Broker / Topic Filter / QoS';");
+    expect(source).toContain('return "mqtt://user:pass@127.0.0.1:1883/devices%2F%2B%2Ftelemetry?topology=cluster&clientId=gonavi-desktop&qos=1";');
+    expect(source).toContain('return "topics=devices%2F%2B%2Ftelemetry,%24SYS%2F%23&clientId=gonavi-desktop&qos=1&cleanSession=true&fetchWaitMs=4000";');
+    expect(source).toContain('label="默认 Topic / Filter（可选）"');
+  });
+
   it('exposes Kafka in the create-connection picker with broker and topic defaults', () => {
     expect(source).toContain("case 'kafka':");
     expect(source).toContain('return 9092;');

frontend/src/components/ConnectionModal.tsx

@@ -385,6 +385,7 @@ const ConnectionModal: React.FC<{
   );
   const disableLocalBackdropFilter = isMacLikePlatform();
   const mysqlTopology = Form.useWatch("mysqlTopology", form) || "single";
+  const mqttTopology = Form.useWatch("mqttTopology", form) || "single";
   const kafkaTopology = Form.useWatch("kafkaTopology", form) || "single";
   const mongoTopology = Form.useWatch("mongoTopology", form) || "single";
   const mongoSrv = Form.useWatch("mongoSrv", form) || false;
@@ -419,6 +420,7 @@ const ConnectionModal: React.FC<{
   );
   const isOceanBaseOracle = dbType === "oceanbase" && oceanBaseProtocol === "oracle";
   const isMySQLLike = isMySQLCompatibleType(dbType) && !isOceanBaseOracle;
+  const isMQTT = dbType === "mqtt";
   const isKafka = dbType === "kafka";
   const isRabbitMQ = dbType === "rabbitmq";
   const supportsConnectionParams = supportsConnectionParamsForType(dbType);
@@ -1691,6 +1693,69 @@ const ConnectionModal: React.FC<{
       };
     }
 
+    if (type === "mqtt") {
+      const defaultPort = getDefaultPortByType(type);
+      const parsed =
+        parseMultiHostUri(trimmedUri, "mqtt") ||
+        parseMultiHostUri(trimmedUri, "mqtts") ||
+        parseMultiHostUri(trimmedUri, "tcp") ||
+        parseMultiHostUri(trimmedUri, "ssl") ||
+        parseMultiHostUri(trimmedUri, "tls");
+      if (!parsed) {
+        return null;
+      }
+      if (!parsed.hosts.length || parsed.hosts.length > MAX_URI_HOSTS) {
+        return null;
+      }
+      if (parsed.hosts.some((entry) => !isValidUriHostEntry(entry))) {
+        return null;
+      }
+      const hostList = normalizeAddressList(parsed.hosts, defaultPort);
+      if (!hostList.length) {
+        return null;
+      }
+      const primary = parseHostPort(
+        hostList[0] || `localhost:${defaultPort}`,
+        defaultPort,
+      );
+      const lowerUri = trimmedUri.toLowerCase();
+      const tlsEnabled =
+        lowerUri.startsWith("mqtts://") ||
+        lowerUri.startsWith("ssl://") ||
+        lowerUri.startsWith("tls://") ||
+        normalizeUriBool(
+          parsed.params.get("tls") ||
+            parsed.params.get("ssl") ||
+            parsed.params.get("useSSL") ||
+            parsed.params.get("use_ssl"),
+        );
+      const skipVerify = normalizeUriBool(
+        parsed.params.get("skip_verify") || parsed.params.get("skipVerify"),
+      );
+      const topology = String(parsed.params.get("topology") || "")
+        .trim()
+        .toLowerCase();
+      const timeoutValue = Number(parsed.params.get("timeout"));
+      return {
+        host: primary?.host || "localhost",
+        port: primary?.port || defaultPort,
+        user: parsed.username,
+        password: parsed.password,
+        database: parsed.database || "",
+        useSSL: tlsEnabled,
+        sslMode: tlsEnabled ? (skipVerify ? "skip-verify" : "required") : "disable",
+        ...extractSSLPathValuesFromParams(parsed.params, type),
+        mqttTopology:
+          topology === "cluster" || hostList.length > 1 ? "cluster" : "single",
+        mqttHosts: hostList.slice(1),
+        connectionParams: serializeConnectionParams(parsed.params),
+        timeout:
+          Number.isFinite(timeoutValue) && timeoutValue > 0
+            ? Math.min(MAX_TIMEOUT_SECONDS, Math.trunc(timeoutValue))
+            : undefined,
+      };
+    }
+
     if (type === "rabbitmq") {
       const defaultPort = getDefaultPortByType(type);
       const parsed = parseSingleHostUri(
@@ -1979,6 +2044,9 @@ const ConnectionModal: React.FC<{
     if (dbType === "iotdb") {
       return "iotdb://root:root@127.0.0.1:6667/root.sg";
     }
+    if (dbType === "mqtt") {
+      return "mqtt://user:pass@127.0.0.1:1883/devices%2F%2B%2Ftelemetry?topology=cluster&clientId=gonavi-desktop&qos=1";
+    }
     if (dbType === "kafka") {
       return "kafka://user:pass@127.0.0.1:9092,127.0.0.2:9092/orders.events?topology=cluster&groupId=analytics&mechanism=scram-sha-256";
     }
@@ -2040,6 +2108,8 @@ const ConnectionModal: React.FC<{
         return "timezone=Asia%2FShanghai";
       case "iotdb":
         return "fetchSize=1024&timeZone=Asia%2FShanghai";
+      case "mqtt":
+        return "topics=devices%2F%2B%2Ftelemetry,%24SYS%2F%23&clientId=gonavi-desktop&qos=1&cleanSession=true&fetchWaitMs=4000";
       case "kafka":
         return "groupId=gonavi&mechanism=scram-sha-256&clientId=gonavi-desktop&startOffset=latest";
       case "rabbitmq":
@@ -2136,6 +2206,36 @@ const ConnectionModal: React.FC<{
       return `kafka://${encodedAuth}${allBrokers.join(",")}${topicPath}${query ? `?${query}` : ""}`;
     }
 
+    if (type === "mqtt") {
+      const primary = toAddress(host, port, defaultPort);
+      const brokers =
+        values.mqttTopology === "cluster"
+          ? normalizeAddressList(values.mqttHosts, defaultPort)
+          : [];
+      const allBrokers = normalizeAddressList([primary, ...brokers], defaultPort);
+      const params = new URLSearchParams();
+      if (allBrokers.length > 1 || values.mqttTopology === "cluster") {
+        params.set("topology", "cluster");
+      }
+      if (values.useSSL) {
+        const mode = String(values.sslMode || "preferred")
+          .trim()
+          .toLowerCase();
+        params.set("tls", "true");
+        if (mode === "skip-verify" || mode === "preferred") {
+          params.set("skip_verify", "true");
+        }
+        appendSSLPathParamsForUri(params, type, values);
+      }
+      if (Number.isFinite(timeout) && timeout > 0) {
+        params.set("timeout", String(timeout));
+      }
+      mergeConnectionParams(params, values.connectionParams);
+      const topicPath = database ? `/${encodeURIComponent(database)}` : "";
+      const query = params.toString();
+      return `mqtt://${encodedAuth}${allBrokers.join(",")}${topicPath}${query ? `?${query}` : ""}`;
+    }
+
     if (type === "rabbitmq") {
       const address = toAddress(host, port, defaultPort);
       const params = new URLSearchParams();
@@ -2529,6 +2629,8 @@ const ConnectionModal: React.FC<{
           configType === "sphinx"
             ? normalizedHosts.slice(1)
             : [];
+        const mqttHosts =
+          configType === "mqtt" ? normalizedHosts.slice(1) : [];
         const kafkaHosts =
           configType === "kafka" ? normalizedHosts.slice(1) : [];
         const mongoHosts =
@@ -2538,6 +2640,9 @@ const ConnectionModal: React.FC<{
         const mysqlIsReplica =
           String(config.topology || "").toLowerCase() === "replica" ||
           mysqlReplicaHosts.length > 0;
+        const mqttIsCluster =
+          String(config.topology || "").toLowerCase() === "cluster" ||
+          mqttHosts.length > 0;
         const kafkaIsCluster =
           String(config.topology || "").toLowerCase() === "cluster" ||
           kafkaHosts.length > 0;
@@ -2613,6 +2718,8 @@ const ConnectionModal: React.FC<{
           timeout: resolvedJvmTimeout,
           mysqlTopology: mysqlIsReplica ? "replica" : "single",
           mysqlReplicaHosts: mysqlReplicaHosts,
+          mqttTopology: mqttIsCluster ? "cluster" : "single",
+          mqttHosts: mqttHosts,
           kafkaTopology: kafkaIsCluster ? "cluster" : "single",
           kafkaHosts: kafkaHosts,
           mysqlReplicaUser: config.mysqlReplicaUser || "",
@@ -3590,6 +3697,23 @@ const ConnectionModal: React.FC<{
       }
     }
 
+    if (type === "mqtt") {
+      const brokers =
+        mergedValues.mqttTopology === "cluster"
+          ? normalizeAddressList(mergedValues.mqttHosts, defaultPort)
+          : [];
+      const allHosts = normalizeAddressList(
+        [`${primaryHost}:${primaryPort}`, ...brokers],
+        defaultPort,
+      );
+      if (mergedValues.mqttTopology === "cluster" || allHosts.length > 1) {
+        hosts = allHosts;
+        topology = "cluster";
+      } else {
+        topology = "single";
+      }
+    }
+
     if (type === "mongodb") {
       mongoSrvEnabled = !!mergedValues.mongoSrv;
       const extraHosts =
@@ -3826,6 +3950,7 @@ const ConnectionModal: React.FC<{
         includeDatabases: undefined,
         includeRedisDatabases: undefined,
         mysqlTopology: "single",
+        mqttTopology: "single",
         kafkaTopology: "single",
         redisTopology: "single",
         mongoTopology: "single",
@@ -3836,6 +3961,7 @@ const ConnectionModal: React.FC<{
         mongoAuthMechanism: "",
         savePassword: true,
         mysqlReplicaHosts: [],
+        mqttHosts: [],
         kafkaHosts: [],
         redisHosts: [],
         redisSentinelMaster: "",
@@ -3915,7 +4041,7 @@ const ConnectionModal: React.FC<{
       });
     } else if (type !== "custom") {
       const defaultUser =
-        type === "clickhouse" ? "default" : (type === "redis" || type === "elasticsearch" || type === "chroma" || type === "qdrant" || type === "kafka" || type === "rabbitmq") ? "" : "root";
+        type === "clickhouse" ? "default" : (type === "redis" || type === "elasticsearch" || type === "chroma" || type === "qdrant" || type === "mqtt" || type === "kafka" || type === "rabbitmq") ? "" : "root";
       const sslCapableType = supportsSSLForType(type);
       setUseSSL(false);
       setUseHttpTunnel(false);
@@ -3934,6 +4060,7 @@ const ConnectionModal: React.FC<{
         httpTunnelUser: "",
         httpTunnelPassword: "",
         mysqlTopology: "single",
+        mqttTopology: "single",
         kafkaTopology: "single",
         redisTopology: "single",
         mongoTopology: "single",
@@ -3944,6 +4071,7 @@ const ConnectionModal: React.FC<{
         mongoAuthMechanism: "",
         savePassword: true,
         mysqlReplicaHosts: [],
+        mqttHosts: [],
         kafkaHosts: [],
         redisHosts: [],
         redisSentinelMaster: "",
@@ -5061,6 +5189,22 @@ const ConnectionModal: React.FC<{
                   ),
                 })}
 
+              {dbType === "mqtt" &&
+                renderConfigSectionCard({
+                  sectionKey: "service",
+                  icon: <DatabaseOutlined />,
+                  children: (
+                    <Form.Item
+                      name="database"
+                      label="默认 Topic / Filter（可选）"
+                      help="留空时必须在 SQL 中显式指定 Topic；填写后可直接执行 SHOW、CONSUME 或 SELECT 预览。支持使用 /、+、#。"
+                      style={{ marginBottom: 0 }}
+                    >
+                      <Input {...noAutoCapInputProps} placeholder="例如：devices/+/telemetry" />
+                    </Form.Item>
+                  ),
+                })}
+
               {dbType === "rabbitmq" &&
                 renderConfigSectionCard({
                   sectionKey: "service",
@@ -5151,6 +5295,28 @@ const ConnectionModal: React.FC<{
                   }),
                 })}
 
+              {isMQTT &&
+                renderConfigSectionCard({
+                  sectionKey: "connectionMode",
+                  icon: <ClusterOutlined />,
+                  children: renderChoiceCards({
+                    fieldName: "mqttTopology",
+                    value: String(mqttTopology),
+                    options: [
+                      {
+                        value: "single",
+                        label: "单 Broker",
+                        description: "只配置一个 broker，适合本地或简单环境。",
+                      },
+                      {
+                        value: "cluster",
+                        label: "集群模式",
+                        description: "配置多个 broker，提高连接发现与故障切换成功率。",
+                      },
+                    ],
+                  }),
+                })}
+
               {isKafka &&
                 kafkaTopology === "cluster" &&
                 renderConfigSectionCard({
@@ -5171,6 +5337,26 @@ const ConnectionModal: React.FC<{
                   ),
                 })}
 
+              {isMQTT &&
+                mqttTopology === "cluster" &&
+                renderConfigSectionCard({
+                  sectionKey: "replica",
+                  icon: <ClusterOutlined />,
+                  children: (
+                    <Form.Item
+                      name="mqttHosts"
+                      label="额外 Broker 地址"
+                      help="可输入多个 broker 地址，格式：host:port（回车确认）"
+                    >
+                      <Select
+                        mode="tags"
+                        placeholder="例如：10.10.0.12:1883、10.10.0.13:1883"
+                        tokenSeparators={[",", ";", " "]}
+                      />
+                    </Form.Item>
+                  ),
+                })}
+
               {isMySQLLike &&
                 mysqlTopology === "replica" &&
                 renderConfigSectionCard({
@@ -5294,7 +5480,7 @@ const ConnectionModal: React.FC<{
                           }
                           style={{ marginBottom: 0 }}
                         >
-                          <Input {...noAutoCapInputProps} placeholder={(dbType === "elasticsearch" || dbType === "chroma" || dbType === "qdrant" || dbType === "kafka" || dbType === "rabbitmq") ? "未开启认证可留空" : undefined} />
+                          <Input {...noAutoCapInputProps} placeholder={(dbType === "elasticsearch" || dbType === "chroma" || dbType === "qdrant" || dbType === "mqtt" || dbType === "kafka" || dbType === "rabbitmq") ? "未开启认证可留空" : undefined} />
                         </Form.Item>
                         <Form.Item
                           name="password"
@@ -6216,6 +6402,7 @@ const ConnectionModal: React.FC<{
           connectionParams: "",
           oceanBaseProtocol: "mysql",
           mysqlTopology: "single",
+          mqttTopology: "single",
           kafkaTopology: "single",
           redisTopology: "single",
           mongoTopology: "single",
@@ -6224,6 +6411,7 @@ const ConnectionModal: React.FC<{
           mongoAuthMechanism: "",
           savePassword: true,
           mysqlReplicaHosts: [],
+          mqttHosts: [],
           kafkaHosts: [],
           redisHosts: [],
           redisSentinelMaster: "",

frontend/src/components/DatabaseIcons.test.tsx

@@ -39,6 +39,13 @@ describe('DatabaseIcons', () => {
     expect(markup).toContain('>Io</text>');
   });
 
+  it('includes MQTT in the selectable database icons', () => {
+    expect(DB_ICON_TYPES).toContain('mqtt');
+    expect(getDbIconLabel('mqtt')).toBe('MQTT');
+    const markup = renderToStaticMarkup(<>{getDbIcon('mqtt', undefined, 22)}</>);
+    expect(markup).toContain('>Mq</text>');
+  });
+
   it('includes Kafka in the selectable database icons', () => {
     expect(DB_ICON_TYPES).toContain('kafka');
     expect(getDbIconLabel('kafka')).toBe('Kafka');

frontend/src/components/DatabaseIcons.tsx

@@ -52,6 +52,7 @@ const DB_DEFAULT_COLORS: Record<string, string> = {
     iris:       '#1F6FEB',
     tdengine:   '#2962FF',
     iotdb:      '#0F766E',
+    mqtt:       '#0EA5A4',
     kafka:      '#F97316',
     rabbitmq:   '#FF6B35',
     chroma:     '#7C3AED',
@@ -194,6 +195,9 @@ const TDengineIcon: React.FC<DbIconProps> = ({ size = 16, color }) => (
 const IoTDBIcon: React.FC<DbIconProps> = ({ size = 16, color }) => (
     <ColorBadge size={size} color={color || DB_DEFAULT_COLORS.iotdb} label="Io" />
 );
+const MQTTIcon: React.FC<DbIconProps> = ({ size = 16, color }) => (
+    <ColorBadge size={size} color={color || DB_DEFAULT_COLORS.mqtt} label="Mq" />
+);
 const KafkaIcon: React.FC<DbIconProps> = ({ size = 16, color }) => (
     <ColorBadge size={size} color={color || DB_DEFAULT_COLORS.kafka} label="Kf" />
 );
@@ -262,6 +266,7 @@ const DB_ICON_MAP: Record<string, React.FC<DbIconProps>> = {
     iris: IrisIcon,
     tdengine: TDengineIcon,
     iotdb: IoTDBIcon,
+    mqtt: MQTTIcon,
     kafka: KafkaIcon,
     rabbitmq: RabbitMQIcon,
     chroma: ChromaIcon,
@@ -274,7 +279,7 @@ const DB_ICON_MAP: Record<string, React.FC<DbIconProps>> = {
 export const DB_ICON_TYPES: string[] = [
     'mysql', 'mariadb', 'oceanbase', 'postgres', 'redis', 'mongodb', 'jvm',
     'oracle', 'sqlserver', 'sqlite', 'duckdb', 'clickhouse', 'starrocks',
-    'kingbase', 'dameng', 'vastbase', 'opengauss', 'gaussdb', 'goldendb', 'highgo', 'iris', 'tdengine', 'iotdb', 'kafka', 'rabbitmq', 'chroma', 'qdrant', 'elasticsearch', 'custom',
+    'kingbase', 'dameng', 'vastbase', 'opengauss', 'gaussdb', 'goldendb', 'highgo', 'iris', 'tdengine', 'iotdb', 'mqtt', 'kafka', 'rabbitmq', 'chroma', 'qdrant', 'elasticsearch', 'custom',
 ];
 
 /** 该类型是否有品牌 SVG 文件 */
@@ -296,7 +301,7 @@ export const getDbIconLabel = (type: string): string => {
         sqlserver: 'SQL Server', clickhouse: 'ClickHouse', sqlite: 'SQLite',
         starrocks: 'StarRocks',
         duckdb: 'DuckDB', kingbase: '金仓', dameng: '达梦',
-        vastbase: 'VastBase', opengauss: 'OpenGauss', gaussdb: 'GaussDB', goldendb: 'GoldenDB', highgo: '瀚高', iris: 'InterSystems IRIS', tdengine: 'TDengine', iotdb: 'Apache IoTDB', kafka: 'Kafka', rabbitmq: 'RabbitMQ',
+        vastbase: 'VastBase', opengauss: 'OpenGauss', gaussdb: 'GaussDB', goldendb: 'GoldenDB', highgo: '瀚高', iris: 'InterSystems IRIS', tdengine: 'TDengine', iotdb: 'Apache IoTDB', mqtt: 'MQTT', kafka: 'Kafka', rabbitmq: 'RabbitMQ',
         chroma: 'Chroma',
         qdrant: 'Qdrant',
         elasticsearch: 'Elasticsearch',

frontend/src/components/MessagePublishModal.tsx

@@ -1,5 +1,5 @@
 import React, { useEffect, useMemo, useState } from 'react';
-import { Alert, Form, Input, Modal, Select, Space, Typography, message } from 'antd';
+import { Alert, Checkbox, Form, Input, Modal, Select, Space, Typography, message } from 'antd';
 
 import { DBQuery } from '../../wailsjs/go/app/App';
 import type { SavedConnection } from '../types';
@@ -149,6 +149,28 @@ const MessagePublishModal: React.FC<MessagePublishModalProps> = ({
             </Form.Item>
           )}
 
+          {presentation.showQos && (
+            <Form.Item
+              label="QoS"
+              name="qos"
+              extra="0 为至多一次，1 为至少一次，2 为仅一次。"
+            >
+              <Select
+                options={[
+                  { label: '0 · At most once', value: 0 },
+                  { label: '1 · At least once', value: 1 },
+                  { label: '2 · Exactly once', value: 2 },
+                ]}
+              />
+            </Form.Item>
+          )}
+
+          {presentation.showRetain && (
+            <Form.Item name="retain" valuePropName="checked" style={{ marginBottom: 16 }}>
+              <Checkbox>Retain 消息</Checkbox>
+            </Form.Item>
+          )}
+
           {presentation.showKey && (
             <Form.Item label="消息 Key（可选）">
               <Space.Compact style={{ width: '100%' }}>

frontend/src/utils/connectionDriverType.ts

@@ -18,6 +18,7 @@ export const normalizeDriverType = (value: string): string => {
   if (normalized === 'chromadb' || normalized === 'chroma-db') return 'chroma';
   if (normalized === 'qdrantdb' || normalized === 'qdrant-db') return 'qdrant';
   if (normalized === 'apache-iotdb' || normalized === 'apache_iotdb') return 'iotdb';
+  if (normalized === 'mqtts') return 'mqtt';
   if (normalized === 'apache-kafka' || normalized === 'apache_kafka') return 'kafka';
   if (normalized === 'rabbit-mq' || normalized === 'rabbit_mq') return 'rabbitmq';
   if (normalized === 'doris') return 'diros';

frontend/src/utils/connectionModalPresentation.ts

@@ -283,6 +283,20 @@ export const resolveConnectionConfigLayout = (
       ],
     };
   }
+  if (type === 'mqtt') {
+    return {
+      kind: 'generic-sql',
+      sections: [
+        'identity',
+        'uri',
+        'target',
+        'connectionMode',
+        'replica',
+        'service',
+        'credentials',
+      ],
+    };
+  }
   if (type === 'kafka') {
     return {
       kind: 'generic-sql',

frontend/src/utils/connectionTypeCapabilities.ts

@@ -16,6 +16,7 @@ export const singleHostUriSchemesByType: Record<string, string[]> = {
   elasticsearch: ["http", "https"],
   chroma: ["http", "https", "chroma"],
   qdrant: ["http", "https", "qdrant"],
+  mqtt: ["mqtt", "mqtts", "tcp", "ssl", "tls"],
   rabbitmq: ["rabbitmq", "http", "https"],
 };
 
@@ -29,6 +30,8 @@ const normalizeConnectionType = (type: string) =>
       case "greatdb":
       case "gdb":
         return "goldendb";
+      case "mqtts":
+        return "mqtt";
       default:
         return normalized;
     }
@@ -59,6 +62,7 @@ const sslSupportedTypes = new Set([
   "elasticsearch",
   "chroma",
   "qdrant",
+  "mqtt",
   "kafka",
   "rabbitmq",
 ]);
@@ -87,6 +91,7 @@ const sslCAPathSupportedTypes = new Set([
   "elasticsearch",
   "chroma",
   "qdrant",
+  "mqtt",
   "kafka",
   "rabbitmq",
 ]);
@@ -109,6 +114,7 @@ const sslClientCertificateSupportedTypes = new Set([
   "gaussdb",
   "mongodb",
   "redis",
+  "mqtt",
   "kafka",
   "rabbitmq",
 ]);
@@ -161,5 +167,6 @@ export const supportsConnectionParamsForType = (type: string) =>
   type === "elasticsearch" ||
   type === "chroma" ||
   type === "qdrant" ||
+  type === "mqtt" ||
   type === "kafka" ||
   type === "rabbitmq";

frontend/src/utils/connectionTypeCatalog.ts

@@ -64,6 +64,7 @@ export const CONNECTION_TYPE_GROUPS: ConnectionTypeCatalogGroup[] = [
   {
     label: '消息队列',
     items: [
+      { key: 'mqtt', name: 'MQTT' },
       { key: 'kafka', name: 'Kafka' },
       { key: 'rabbitmq', name: 'RabbitMQ' },
     ],
@@ -123,6 +124,8 @@ export const getConnectionTypeDefaultPort = (type: string): number => {
       return 8000;
     case 'qdrant':
       return 6333;
+    case 'mqtt':
+      return 1883;
     case 'kafka':
       return 9092;
     case 'rabbitmq':
@@ -159,6 +162,8 @@ export const getConnectionTypeHint = (type: string): string => {
       return 'Collection 浏览、向量搜索和 Payload 过滤';
     case 'iotdb':
       return 'Storage Group / Device / Timeseries';
+    case 'mqtt':
+      return 'Broker / Topic Filter / QoS';
     case 'kafka':
       return 'Broker / Topic / Consumer Group';
     case 'rabbitmq':

frontend/src/utils/dataSourceCapabilities.test.ts

@@ -164,6 +164,27 @@ describe('dataSourceCapabilities', () => {
     });
   });
 
+  it('treats MQTT as a queryable messaging datasource with manual total count and publish support', () => {
+    expect(getDataSourceCapabilities({ type: 'mqtt' })).toMatchObject({
+      type: 'mqtt',
+      supportsQueryEditor: true,
+      supportsSqlQueryExport: false,
+      supportsCopyInsert: false,
+      supportsCreateDatabase: false,
+      supportsRenameDatabase: false,
+      supportsDropDatabase: false,
+      supportsMessagePublish: true,
+      forceReadOnlyQueryResult: true,
+      preferManualTotalCount: true,
+    });
+    expect(getDataSourceCapabilities({ type: 'custom', driver: 'mqtts' })).toMatchObject({
+      type: 'mqtt',
+      supportsQueryEditor: true,
+      supportsMessagePublish: true,
+      preferManualTotalCount: true,
+    });
+  });
+
   it('treats Kafka as a queryable read-only messaging datasource', () => {
     expect(getDataSourceCapabilities({ type: 'kafka' })).toMatchObject({
       type: 'kafka',

frontend/src/utils/dataSourceCapabilities.ts

@@ -35,6 +35,9 @@ const normalizeDataSourceToken = (raw: string): string => {
     case 'qdrantdb':
     case 'qdrant-db':
       return 'qdrant';
+    case 'mqtt':
+    case 'mqtts':
+      return 'mqtt';
     case 'apache-iotdb':
     case 'apache_iotdb':
       return 'iotdb';
@@ -121,9 +124,9 @@ const COPY_INSERT_TYPES = new Set([
 ]);
 
 const QUERY_EDITOR_DISABLED_TYPES = new Set(['redis']);
-const FORCE_READ_ONLY_QUERY_TYPES = new Set(['tdengine', 'iotdb', 'clickhouse', 'kafka', 'rabbitmq']);
+const FORCE_READ_ONLY_QUERY_TYPES = new Set(['tdengine', 'iotdb', 'clickhouse', 'mqtt', 'kafka', 'rabbitmq']);
-const MESSAGE_PUBLISH_TYPES = new Set(['kafka', 'rabbitmq']);
+const MESSAGE_PUBLISH_TYPES = new Set(['mqtt', 'kafka', 'rabbitmq']);
-const MANUAL_TOTAL_COUNT_TYPES = new Set(['duckdb', 'oracle']);
+const MANUAL_TOTAL_COUNT_TYPES = new Set(['duckdb', 'oracle', 'mqtt']);
 const APPROXIMATE_TABLE_COUNT_TYPES = new Set(['duckdb', 'oracle']);
 const APPROXIMATE_TOTAL_PAGE_TYPES = new Set(['duckdb']);
 

frontend/src/utils/messagePublish.test.ts

@@ -64,6 +64,37 @@ describe('messagePublish', () => {
     });
   });
 
+  it('builds an MQTT publish JSON command with qos and retain flags', () => {
+    const result = buildMessagePublishCommand(
+      { type: 'mqtt' },
+      {
+        destination: 'devices/device-001/telemetry',
+        qos: 1,
+        retain: true,
+        bodyMode: 'json',
+        body: '{"id":1,"event":"created"}',
+      },
+    );
+
+    expect(result.transportLabel).toBe('MQTT Topic');
+    expect(result.destinationLabel).toBe('devices/device-001/telemetry');
+    expect(result.commandText).toContain('"publish": "devices/device-001/telemetry"');
+    expect(result.commandText).toContain('"qos": 1');
+    expect(result.commandText).toContain('"retain": true');
+  });
+
+  it('seeds MQTT default publish draft with connection qos and retain defaults', () => {
+    expect(createDefaultMessagePublishDraft(
+      { type: 'mqtt', database: 'devices/+/telemetry', connectionParams: 'qos=1&retain=true' },
+      '',
+    )).toMatchObject({
+      destination: 'devices/+/telemetry',
+      qos: 1,
+      retain: true,
+      bodyMode: 'json',
+    });
+  });
+
   it('builds a RabbitMQ publish JSON command with routing and properties', () => {
     const result = buildMessagePublishCommand(
       { type: 'rabbitmq', connectionParams: 'defaultQueue=orders.queue&exchange=events.topic' },

frontend/src/utils/messagePublish.ts

@@ -15,6 +15,8 @@ export type MessagePublishDraft = {
   destination: string;
   exchange?: string;
   routingKey?: string;
+  qos?: number;
+  retain?: boolean;
   keyMode?: MessagePublishValueMode;
   key?: string;
   bodyMode?: MessagePublishValueMode;
@@ -40,6 +42,8 @@ export type MessagePublishPresentation = {
   showExchange: boolean;
   showRoutingKey: boolean;
   showProperties: boolean;
+  showQos: boolean;
+  showRetain: boolean;
 };
 
 const normalizeMode = (value: unknown, fallback: MessagePublishValueMode): MessagePublishValueMode => {
@@ -138,6 +142,9 @@ const resolveDefaultDestination = (config: ConnectionLike, explicitDestination:
   if (resolvedType === 'kafka') {
     return String(config?.database || '').trim();
   }
+  if (resolvedType === 'mqtt') {
+    return String(config?.database || params.get('defaultTopic') || params.get('topic') || '').trim();
+  }
   if (resolvedType === 'rabbitmq') {
     return String(params.get('defaultQueue') || params.get('queue') || '').trim();
   }
@@ -161,6 +168,25 @@ export const getMessagePublishPresentation = (
       showExchange: true,
       showRoutingKey: true,
       showProperties: true,
+      showQos: false,
+      showRetain: false,
+    };
+  }
+
+  if (resolvedType === 'mqtt') {
+    return {
+      transportLabel: 'MQTT Topic',
+      destinationLabel: 'Topic',
+      destinationPlaceholder: '例如：devices/device-001/telemetry',
+      destinationRequiredMessage: '请输入 Topic',
+      alertMessage: '当前表单会自动拼装 MQTT publish JSON 命令，并直接通过 broker 执行测试发送。',
+      successHint: 'QoS 与 retain 可单独指定；未填写时沿用当前连接中的默认参数。',
+      showKey: false,
+      showExchange: false,
+      showRoutingKey: false,
+      showProperties: false,
+      showQos: true,
+      showRetain: true,
     };
   }
 
@@ -175,6 +201,8 @@ export const getMessagePublishPresentation = (
     showExchange: false,
     showRoutingKey: false,
     showProperties: false,
+    showQos: false,
+    showRetain: false,
   };
 };
 
@@ -198,6 +226,18 @@ export const createDefaultMessagePublishDraft = (
     };
   }
 
+  if (resolvedType === 'mqtt') {
+    const qosValue = Number(params.get('qos'));
+    return {
+      destination: resolvedDestination,
+      qos: Number.isFinite(qosValue) ? Math.min(2, Math.max(0, Math.trunc(qosValue))) : 0,
+      retain: ['1', 'true', 'yes', 'on'].includes(String(params.get('retain') || '').trim().toLowerCase()),
+      bodyMode: 'json',
+      body: '{\n  "event": "test",\n  "source": "gonavi"\n}',
+      headers: '',
+    };
+  }
+
   return {
     destination: resolvedDestination,
     keyMode: 'text',
@@ -218,6 +258,27 @@ export const buildMessagePublishCommand = (
     throw new Error('请输入目标 Topic / Queue');
   }
 
+  if (resolvedType === 'mqtt') {
+    if (/[#+]/.test(destination)) {
+      throw new Error('MQTT 发送 Topic 不能包含 + 或 # 通配符');
+    }
+    const bodyMode = normalizeMode(draft.bodyMode, 'json');
+    const qosValue = Number(draft.qos);
+    const qos = Number.isFinite(qosValue) ? Math.min(2, Math.max(0, Math.trunc(qosValue))) : 0;
+    const command: Record<string, unknown> = {
+      publish: destination,
+      payload: parseRequiredPayload(draft.body, bodyMode, '消息体'),
+      qos,
+      retain: !!draft.retain,
+    };
+
+    return {
+      commandText: JSON.stringify(command, null, 2),
+      destinationLabel: destination,
+      transportLabel: 'MQTT Topic',
+    };
+  }
+
   if (resolvedType === 'rabbitmq') {
     const params = resolveConnectionParams(config);
     const bodyMode = normalizeMode(draft.bodyMode, 'json');

frontend/src/utils/objectQueryTemplates.test.ts

@@ -11,6 +11,10 @@ describe('buildTableSelectQuery', () => {
     expect(buildTableSelectQuery('kafka', 'logs.app-1')).toBe('SELECT * FROM "logs.app-1" LIMIT 100;');
   });
 
+  it('adds a preview limit for MQTT topic browsing', () => {
+    expect(buildTableSelectQuery('mqtt', 'devices/+/telemetry')).toBe('SELECT * FROM "devices/+/telemetry" LIMIT 100;');
+  });
+
   it('adds a preview limit for RabbitMQ queue browsing', () => {
     expect(buildTableSelectQuery('rabbitmq', 'orders.events.v1')).toBe('SELECT * FROM "orders.events.v1" LIMIT 100;');
   });

frontend/src/utils/objectQueryTemplates.ts

@@ -5,7 +5,7 @@ export const buildTableSelectQuery = (dbType: string, tableName: string): string
   if (!normalizedTableName) {
     return 'SELECT * FROM ';
   }
-  if (['kafka', 'rabbitmq'].includes(String(dbType || '').trim().toLowerCase())) {
+  if (['mqtt', 'kafka', 'rabbitmq'].includes(String(dbType || '').trim().toLowerCase())) {
     return `SELECT * FROM ${quoteQualifiedIdent(dbType, normalizedTableName)} LIMIT 100;`;
   }
   return `SELECT * FROM ${quoteQualifiedIdent(dbType, normalizedTableName)};`;

frontend/src/utils/sql.test.ts

@@ -59,6 +59,11 @@ describe('quoteQualifiedIdent', () => {
       .toBe('`root`.`sg`.`d1`');
   });
 
+  it('keeps MQTT topic filters as one quoted identifier', () => {
+    expect(quoteQualifiedIdent('mqtt', 'devices/+/telemetry.v1'))
+      .toBe('"devices/+/telemetry.v1"');
+  });
+
   it('keeps Kafka topic names as one quoted identifier', () => {
     expect(quoteQualifiedIdent('kafka', 'logs.app-1'))
       .toBe('"logs.app-1"');

frontend/src/utils/sql.ts

@@ -54,7 +54,7 @@ export const quoteIdentPart = (dbType: string, ident: string) => {
 export const quoteQualifiedIdent = (dbType: string, ident: string) => {
   const raw = (ident || '').trim();
   if (!raw) return raw;
-  if (['kafka', 'rabbitmq'].includes((dbType || '').trim().toLowerCase())) {
+  if (['mqtt', 'kafka', 'rabbitmq'].includes((dbType || '').trim().toLowerCase())) {
     return quoteIdentPart(dbType, raw);
   }
   const parts = splitQualifiedNameSegments(raw).filter(Boolean);

frontend/src/utils/sqlDialect.test.ts

@@ -38,6 +38,8 @@ describe('sqlDialect', () => {
     expect(resolveSqlDialect('custom', 'qdrant-db')).toBe('qdrant');
     expect(resolveSqlDialect('Apache-IoTDB')).toBe('iotdb');
     expect(resolveSqlDialect('custom', 'apache_iotdb')).toBe('iotdb');
+    expect(resolveSqlDialect('MQTTS')).toBe('mqtt');
+    expect(resolveSqlDialect('custom', 'mqtts')).toBe('mqtt');
     expect(resolveSqlDialect('Apache-Kafka')).toBe('kafka');
     expect(resolveSqlDialect('custom', 'apache_kafka')).toBe('kafka');
     expect(resolveSqlDialect('Rabbit-MQ')).toBe('rabbitmq');
@@ -75,6 +77,11 @@ describe('sqlDialect', () => {
     expect(resolveSqlKeywords('iotdb')).not.toEqual(expect.arrayContaining(['TAGS', 'USING']));
   });
 
+  it('resolves MQTT completion keywords for topic discovery and consume syntax', () => {
+    expect(resolveSqlKeywords('mqtt')).toEqual(expect.arrayContaining(['SHOW TOPICS', 'DESCRIBE TOPIC', 'CONSUME']));
+    expect(resolveSqlKeywords('mqtt')).not.toEqual(expect.arrayContaining(['ALIGN BY DEVICE', 'AUTO_INCREMENT']));
+  });
+
   it('resolves Kafka completion keywords for topic discovery and consume syntax', () => {
     expect(resolveSqlKeywords('kafka')).toEqual(expect.arrayContaining(['SHOW TOPICS', 'DESCRIBE TOPIC', 'CONSUME']));
     expect(resolveSqlKeywords('kafka')).not.toEqual(expect.arrayContaining(['ALIGN BY DEVICE', 'AUTO_INCREMENT']));

frontend/src/utils/sqlDialect.ts

@@ -29,6 +29,7 @@ export type SqlDialect =
   | 'clickhouse'
   | 'tdengine'
   | 'iotdb'
+  | 'mqtt'
   | 'kafka'
   | 'rabbitmq'
   | 'mongodb'
@@ -137,6 +138,9 @@ export const resolveSqlDialect = (
     case 'apache-iotdb':
     case 'apache_iotdb':
       return 'iotdb';
+    case 'mqtt':
+    case 'mqtts':
+      return 'mqtt';
     case 'kafka':
     case 'apache-kafka':
     case 'apache_kafka':
@@ -169,6 +173,7 @@ export const resolveSqlDialect = (
   if (source.includes('clickhouse')) return 'clickhouse';
   if (source.includes('tdengine')) return 'tdengine';
   if (source.includes('iotdb')) return 'iotdb';
+  if (source.includes('mqtt')) return 'mqtt';
   if (source.includes('kafka')) return 'kafka';
   if (source.includes('rabbitmq') || source.includes('rabbit-mq') || source.includes('rabbit_mq')) return 'rabbitmq';
   if (source.includes('sqlserver') || source.includes('mssql')) return 'sqlserver';
@@ -623,6 +628,15 @@ const IOTDB_KEYWORDS = [
   'COMPRESSION',
 ];
 
+const MQTT_KEYWORDS = [
+  'SHOW TOPICS',
+  'DESCRIBE TOPIC',
+  'CONSUME',
+  'FROM',
+  'LIMIT',
+  'OFFSET',
+];
+
 const KAFKA_KEYWORDS = [
   'SHOW TOPICS',
   'SHOW TOPIC',
@@ -658,6 +672,7 @@ export const resolveSqlKeywords = (dbType: string): string[] => {
   if (dialect === 'clickhouse') return unique([...COMMON_KEYWORDS, ...CLICKHOUSE_KEYWORDS]);
   if (dialect === 'tdengine') return unique([...COMMON_KEYWORDS, ...TDENGINE_KEYWORDS]);
   if (dialect === 'iotdb') return unique([...COMMON_KEYWORDS, ...IOTDB_KEYWORDS]);
+  if (dialect === 'mqtt') return unique([...COMMON_KEYWORDS, ...MQTT_KEYWORDS]);
   if (dialect === 'kafka') return unique([...COMMON_KEYWORDS, ...KAFKA_KEYWORDS]);
   if (dialect === 'rabbitmq') return unique([...COMMON_KEYWORDS, ...RABBITMQ_KEYWORDS]);
   return COMMON_KEYWORDS;

go.mod

@@ -6,10 +6,12 @@ require (
 	gitea.com/kingbase/gokb v0.0.0-20201021123113-29bd62a876c3
 	gitee.com/chunanyong/dm v1.8.22
 	github.com/ClickHouse/clickhouse-go/v2 v2.43.0
+	github.com/HuaweiCloudDeveloper/gaussdb-go v1.0.0-rc1
 	github.com/apache/iotdb-client-go v1.3.7
 	github.com/caretdev/go-irisnative v0.2.1
 	github.com/duckdb/duckdb-go/v2 v2.5.5
 	github.com/elastic/go-elasticsearch/v8 v8.19.6
+	github.com/eclipse/paho.mqtt.golang v1.5.1
 	github.com/go-sql-driver/mysql v1.9.3
 	github.com/google/uuid v1.6.0
 	github.com/highgo/pq-sm3 v0.0.0
@@ -17,6 +19,7 @@ require (
 	github.com/microsoft/go-mssqldb v1.9.6
 	github.com/modelcontextprotocol/go-sdk v1.6.1
 	github.com/redis/go-redis/v9 v9.17.3
+	github.com/segmentio/kafka-go v0.4.51
 	github.com/sijms/go-ora/v2 v2.9.0
 	github.com/taosdata/driver-go/v3 v3.7.8
 	github.com/wailsapp/wails/v2 v2.11.0
@@ -32,7 +35,6 @@ require (
 )
 
 require (
-	github.com/HuaweiCloudDeveloper/gaussdb-go v1.0.0-rc1 // indirect
 	github.com/apache/thrift v0.22.0 // indirect
 	github.com/elastic/elastic-transport-go/v8 v8.9.0 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
@@ -42,7 +44,6 @@ require (
 	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
 	github.com/jackc/puddle/v2 v2.2.2 // indirect
 	github.com/segmentio/encoding v0.5.4 // indirect
-	github.com/segmentio/kafka-go v0.4.51 // indirect
 	github.com/tjfoc/gmsm v1.4.1 // indirect
 	github.com/yosida95/uritemplate/v3 v3.0.2 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect

go.sum

@@ -74,6 +74,8 @@ github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkp
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
 github.com/dvsekhvalnov/jose2go v1.5.0 h1:3j8ya4Z4kMCwT5nXIKFSV84YS+HdqSSO0VsTQxaLAeM=
 github.com/dvsekhvalnov/jose2go v1.5.0/go.mod h1:QsHjhyTlD/lAVqn/NSbVZmSCGeDehTB/mPZadG+mhXU=
+github.com/eclipse/paho.mqtt.golang v1.5.1 h1:/VSOv3oDLlpqR2Epjn1Q7b2bSTplJIeV2ISgCl2W7nE=
+github.com/eclipse/paho.mqtt.golang v1.5.1/go.mod h1:1/yJCneuyOoCOzKSsOTUc0AJfpsItBGWvYpBLimhArU=
 github.com/elastic/elastic-transport-go/v8 v8.9.0 h1:KeT/2P54F0xS0S8Y3Pf+tFDg4HmBgReQMB+BMz8dDAs=
 github.com/elastic/elastic-transport-go/v8 v8.9.0/go.mod h1:ssMTvNS2hwf7CaiGsRRsx4gQHFZ/jS/DkLcISxekWzc=
 github.com/elastic/go-elasticsearch/v8 v8.19.6 h1:4qa7ecJkr5rLsoHKIVGbaqcFt2o57CnOHQJi9Pts/rk=

internal/app/db_context.go

@@ -16,6 +16,8 @@ func normalizeRunConfig(config connection.ConnectionConfig, dbName string) conne
 	}
 
 	switch strings.ToLower(strings.TrimSpace(config.Type)) {
+	case "mqtt", "mqtts":
+		// MQTT 的 Database 字段表示默认 Topic，不能被树上的 synthetic database(topics) 覆盖。
 	case "kafka", "apache-kafka", "apache_kafka":
 		// Kafka 的 Database 字段表示默认 Topic，不能被树上的 synthetic database(topics) 覆盖。
 	case "oceanbase":
@@ -53,7 +55,7 @@ func normalizeSchemaAndTable(config connection.ConnectionConfig, dbName string,
 
 	// Elasticsearch：索引名可能含多个点（如 iot_pro_biz_operate_log.index.20240626），
 	// 不能按点分割，直接返回原始数据库名和完整表名。
-	if dbType == "elasticsearch" || dbType == "iotdb" || dbType == "kafka" || dbType == "rabbitmq" {
+	if dbType == "elasticsearch" || dbType == "iotdb" || dbType == "mqtt" || dbType == "kafka" || dbType == "rabbitmq" {
 		return rawDB, rawTable
 	}
 
@@ -112,7 +114,7 @@ func normalizeSchemaAndTable(config connection.ConnectionConfig, dbName string,
 func normalizeMetadataSchemaAndTable(config connection.ConnectionConfig, dbName string, tableName string) (string, string) {
 	schema, table := normalizeSchemaAndTable(config, dbName, tableName)
 	switch resolveDDLDBType(config) {
-	case "kafka", "rabbitmq":
+	case "mqtt", "kafka", "rabbitmq":
 		return schema, table
 	case "postgres", "kingbase", "highgo", "vastbase", "opengauss", "gaussdb":
 		rawTable := strings.TrimSpace(tableName)

internal/app/db_context_test.go

@@ -332,6 +332,18 @@ func TestNormalizeSchemaAndTable_KafkaPreservesDottedTopicName(t *testing.T) {
 	}
 }
 
+func TestNormalizeSchemaAndTable_MQTTPreservesTopicFilter(t *testing.T) {
+	t.Parallel()
+
+	schemaOrDb, table := normalizeSchemaAndTable(connection.ConnectionConfig{
+		Type: "mqtt",
+	}, "topics", "devices/floor1.sensor.v1")
+
+	if schemaOrDb != "topics" || table != "devices/floor1.sensor.v1" {
+		t.Fatalf("expected mqtt topic filter to stay intact, got %q.%q", schemaOrDb, table)
+	}
+}
+
 func TestNormalizeSchemaAndTable_RabbitMQPreservesDottedQueueName(t *testing.T) {
 	t.Parallel()
 
@@ -356,6 +368,18 @@ func TestNormalizeMetadataSchemaAndTable_KafkaPreservesDottedTopicName(t *testin
 	}
 }
 
+func TestNormalizeMetadataSchemaAndTable_MQTTPreservesTopicFilter(t *testing.T) {
+	t.Parallel()
+
+	schemaOrDb, table := normalizeMetadataSchemaAndTable(connection.ConnectionConfig{
+		Type: "mqtt",
+	}, "topics", "devices/floor1.sensor.v1")
+
+	if schemaOrDb != "topics" || table != "devices/floor1.sensor.v1" {
+		t.Fatalf("expected mqtt metadata topic filter to stay intact, got %q.%q", schemaOrDb, table)
+	}
+}
+
 func TestNormalizeMetadataSchemaAndTable_RabbitMQPreservesDottedQueueName(t *testing.T) {
 	t.Parallel()
 

internal/app/methods_db.go

@@ -315,8 +315,8 @@ func normalizeSchemaAndTableByType(dbType string, dbName string, tableName strin
 		return rawDB, rawTable
 	}
 
-	// Elasticsearch / RabbitMQ / Kafka：对象名可能含多个点，不能按点分割
+	// Elasticsearch / MQTT / RabbitMQ / Kafka：对象名可能含多个点或路径，不能按点分割
-	if dbType == "elasticsearch" || dbType == "kafka" || dbType == "rabbitmq" {
+	if dbType == "elasticsearch" || dbType == "mqtt" || dbType == "kafka" || dbType == "rabbitmq" {
 		return rawDB, rawTable
 	}
 

internal/app/methods_db_create_statement_test.go

@@ -166,6 +166,15 @@ func TestNormalizeSchemaAndTableByType_KafkaPreservesDottedTopicName(t *testing.
 	}
 }
 
+func TestNormalizeSchemaAndTableByType_MQTTPreservesTopicFilter(t *testing.T) {
+	t.Parallel()
+
+	schema, table := normalizeSchemaAndTableByType("mqtt", "topics", "devices/floor1.sensor.v1")
+	if schema != "topics" || table != "devices/floor1.sensor.v1" {
+		t.Fatalf("expected mqtt topic filter to stay intact, got %q.%q", schema, table)
+	}
+}
+
 func TestNormalizeSchemaAndTableByType_RabbitMQPreservesDottedQueueName(t *testing.T) {
 	t.Parallel()
 

internal/app/methods_driver.go

@@ -1432,6 +1432,8 @@ func normalizeDriverType(driverType string) string {
 		return "gaussdb"
 	case "goldendb", "greatdb", "gdb":
 		return "goldendb"
+	case "mqtt", "mqtts":
+		return "mqtt"
 	case "kafka", "apache-kafka", "apache_kafka":
 		return "kafka"
 	case "rabbitmq", "rabbit-mq", "rabbit_mq":
@@ -1505,6 +1507,7 @@ func allDriverDefinitionsWithPackages(packages map[string]pinnedDriverPackage) [
 		{Type: "oracle", Name: "Oracle", Engine: driverEngineGo, BuiltIn: true},
 		{Type: "redis", Name: "Redis", Engine: driverEngineGo, BuiltIn: true},
 		{Type: "postgres", Name: "PostgreSQL", Engine: driverEngineGo, BuiltIn: true},
+		{Type: "mqtt", Name: "MQTT", Engine: driverEngineGo, BuiltIn: true},
 		{Type: "kafka", Name: "Kafka", Engine: driverEngineGo, BuiltIn: true},
 		{Type: "rabbitmq", Name: "RabbitMQ", Engine: driverEngineGo, BuiltIn: true},
 

internal/app/methods_driver_version_test.go

@@ -518,6 +518,22 @@ func TestKafkaDriverDefinitionIsBuiltIn(t *testing.T) {
 	}
 }
 
+func TestMQTTDriverDefinitionIsBuiltIn(t *testing.T) {
+	definition, ok := resolveDriverDefinition("mqtts")
+	if !ok {
+		t.Fatal("expected mqtt driver definition")
+	}
+	if definition.Name != "MQTT" {
+		t.Fatalf("unexpected mqtt driver name: %q", definition.Name)
+	}
+	if !definition.BuiltIn {
+		t.Fatal("expected mqtt to be a built-in driver")
+	}
+	if definition.PinnedVersion != "" || definition.DefaultDownloadURL != "" {
+		t.Fatalf("expected mqtt builtin definition to omit optional-agent metadata: %#v", definition)
+	}
+}
+
 func TestRabbitMQDriverDefinitionIsBuiltIn(t *testing.T) {
 	definition, ok := resolveDriverDefinition("rabbit-mq")
 	if !ok {

internal/db/database.go

@@ -489,6 +489,9 @@ var databaseFactories = map[string]databaseFactory{
 	"qdrant": func() Database {
 		return &QdrantDB{}
 	},
+	"mqtt": func() Database {
+		return &MQTTDB{}
+	},
 	"kafka": func() Database {
 		return &KafkaDB{}
 	},
@@ -535,6 +538,8 @@ func normalizeDatabaseType(dbType string) string {
 		return "chroma"
 	case "qdrantdb", "qdrant-db":
 		return "qdrant"
+	case "mqtt", "mqtts":
+		return "mqtt"
 	case "kafka", "apache-kafka", "apache_kafka":
 		return "kafka"
 	case "rabbitmq", "rabbit-mq", "rabbit_mq":

internal/db/driver_support.go

@@ -19,6 +19,7 @@ var coreBuiltinDrivers = map[string]struct{}{
 	"postgres": {},
 	"chroma":   {},
 	"qdrant":   {},
+	"mqtt":     {},
 	"kafka":    {},
 	"rabbitmq": {},
 }
@@ -81,6 +82,8 @@ func normalizeRuntimeDriverType(driverType string) string {
 		return "chroma"
 	case "qdrantdb", "qdrant-db":
 		return "qdrant"
+	case "mqtt", "mqtts":
+		return "mqtt"
 	case "apache-iotdb", "apache_iotdb", "iotdb":
 		return "iotdb"
 	case "kafka", "apache-kafka", "apache_kafka":
@@ -148,6 +151,8 @@ func driverDisplayName(driverType string) string {
 		return "Chroma"
 	case "qdrant":
 		return "Qdrant"
+	case "mqtt":
+		return "MQTT"
 	case "kafka":
 		return "Kafka"
 	case "rabbitmq":

internal/db/mqtt_impl_test.go

@@ -0,0 +1,211 @@
+package db
+
+import (
+	"context"
+	"reflect"
+	"strings"
+	"testing"
+	"time"
+
+	"GoNavi-Wails/internal/connection"
+)
+
+func TestNormalizeMQTTConfigParsesURIAndParams(t *testing.T) {
+	config := normalizeMQTTConfig(connection.ConnectionConfig{
+		URI:              "mqtt://user:secret@127.0.0.1:1883/devices%2F%2B%2Ftelemetry?topology=cluster&tls=true&skip_verify=true",
+		ConnectionParams: "topics=devices%2F%2B%2Ftelemetry,%24SYS%2F%23&qos=1&retain=false&cleanSession=false&fetchWaitMs=3500",
+	})
+
+	if config.Host != "127.0.0.1" || config.Port != 1883 {
+		t.Fatalf("unexpected mqtt host/port: %#v", config)
+	}
+	if config.User != "user" || config.Password != "secret" {
+		t.Fatalf("unexpected mqtt credentials: %#v", config)
+	}
+	if config.Database != "devices/+/telemetry" {
+		t.Fatalf("unexpected mqtt default topic: %q", config.Database)
+	}
+	if !config.UseSSL || config.SSLMode != "skip-verify" {
+		t.Fatalf("unexpected mqtt tls settings: %#v", config)
+	}
+	if config.Topology != "cluster" {
+		t.Fatalf("unexpected mqtt topology: %q", config.Topology)
+	}
+
+	params := mqttConnectionParams(config)
+	if params.Get("topics") != "devices/+/telemetry,$SYS/#" {
+		t.Fatalf("unexpected mqtt topics param: %#v", params)
+	}
+	if params.Get("qos") != "1" || params.Get("fetchWaitMs") != "3500" {
+		t.Fatalf("unexpected mqtt params: %#v", params)
+	}
+}
+
+func TestMQTTQueryExecAndColumns(t *testing.T) {
+	fakeRuntime := &fakeMQTTRuntime{
+		fetchResponses: map[string][]mqttMessageRecord{
+			"devices/+/telemetry": {
+				{
+					Topic:      "devices/device-001/telemetry",
+					QoS:        1,
+					Retained:   false,
+					Duplicate:  false,
+					MessageID:  12,
+					Payload:    []byte(`{"event":"created","meta":{"source":"sensor"}}`),
+					Decoded:    map[string]interface{}{"event": "created", "meta": map[string]interface{}{"source": "sensor"}},
+					Encoding:   "json",
+					ReceivedAt: time.Date(2026, 6, 14, 11, 0, 0, 0, time.UTC),
+				},
+				{
+					Topic:      "devices/device-002/telemetry",
+					QoS:        1,
+					Retained:   true,
+					Duplicate:  false,
+					MessageID:  13,
+					Payload:    []byte("plain-text"),
+					Decoded:    "plain-text",
+					Encoding:   "text",
+					ReceivedAt: time.Date(2026, 6, 14, 11, 0, 1, 0, time.UTC),
+				},
+			},
+		},
+	}
+
+	originalFactory := newMQTTRuntime
+	newMQTTRuntime = func(config connection.ConnectionConfig) (mqttRuntime, error) {
+		return fakeRuntime, nil
+	}
+	defer func() {
+		newMQTTRuntime = originalFactory
+	}()
+
+	client := &MQTTDB{}
+	if err := client.Connect(connection.ConnectionConfig{
+		Type:             "mqtt",
+		Host:             "127.0.0.1",
+		Port:             1883,
+		Database:         "devices/+/telemetry",
+		ConnectionParams: "topics=devices%2F%2B%2Ftelemetry,%24SYS%2F%23&qos=1&fetchWaitMs=2500",
+	}); err != nil {
+		t.Fatalf("Connect failed: %v", err)
+	}
+	defer client.Close()
+
+	rows, columns, err := client.Query(`SHOW TOPICS LIMIT 2`)
+	if err != nil {
+		t.Fatalf("SHOW TOPICS failed: %v", err)
+	}
+	if len(rows) != 2 || rows[0]["topic"] != "devices/+/telemetry" {
+		t.Fatalf("unexpected mqtt topic rows: %#v", rows)
+	}
+	if !containsString(columns, "wildcard") {
+		t.Fatalf("expected wildcard column, got %v", columns)
+	}
+
+	rows, _, err = client.Query(`DESCRIBE TOPIC "devices/+/telemetry"`)
+	if err != nil {
+		t.Fatalf("DESCRIBE TOPIC failed: %v", err)
+	}
+	if len(rows) != 1 || rows[0]["configured"] != true || rows[0]["default_qos"] != 1 {
+		t.Fatalf("unexpected mqtt describe rows: %#v", rows)
+	}
+
+	rows, columns, err = client.Query(`SELECT * FROM "devices/+/telemetry" LIMIT 1 OFFSET 1`)
+	if err != nil {
+		t.Fatalf("SELECT topic failed: %v", err)
+	}
+	if len(fakeRuntime.fetchRequests) == 0 || fakeRuntime.fetchRequests[len(fakeRuntime.fetchRequests)-1].Offset != 1 {
+		t.Fatalf("expected mqtt fetch offset 1, got %#v", fakeRuntime.fetchRequests)
+	}
+	if len(rows) != 1 || rows[0]["payload"] != "plain-text" || rows[0]["payload_encoding"] != "text" {
+		t.Fatalf("unexpected mqtt message rows: %#v", rows)
+	}
+	if !containsString(columns, "payload_encoding") {
+		t.Fatalf("expected payload_encoding column, got %v", columns)
+	}
+
+	affected, err := client.Exec(`{"publish":"devices/device-001/telemetry","payload":{"id":1},"qos":2,"retain":true}`)
+	if err != nil {
+		t.Fatalf("mqtt publish failed: %v", err)
+	}
+	if affected != 1 {
+		t.Fatalf("unexpected affected rows: %d", affected)
+	}
+	if len(fakeRuntime.published) != 1 {
+		t.Fatalf("expected one mqtt publish call, got %#v", fakeRuntime.published)
+	}
+	if fakeRuntime.published[0].Topic != "devices/device-001/telemetry" || fakeRuntime.published[0].QoS != 2 || !fakeRuntime.published[0].Retain {
+		t.Fatalf("unexpected mqtt publish command: %#v", fakeRuntime.published[0])
+	}
+
+	columnDefs, err := client.GetColumns(mqttSyntheticDatabase, "devices/+/telemetry")
+	if err != nil {
+		t.Fatalf("GetColumns failed: %v", err)
+	}
+	names := make([]string, 0, len(columnDefs))
+	for _, col := range columnDefs {
+		names = append(names, col.Name)
+	}
+	joined := strings.Join(names, ",")
+	for _, want := range []string{"topic", "payload.meta.source", "payload_encoding"} {
+		if !strings.Contains(joined, want) {
+			t.Fatalf("expected mqtt column %q in %s", want, joined)
+		}
+	}
+
+	databases, err := client.GetDatabases()
+	if err != nil {
+		t.Fatalf("GetDatabases failed: %v", err)
+	}
+	if !reflect.DeepEqual(databases, []string{mqttSyntheticDatabase}) {
+		t.Fatalf("unexpected mqtt database list: %#v", databases)
+	}
+
+	tables, err := client.GetTables(mqttSyntheticDatabase)
+	if err != nil {
+		t.Fatalf("GetTables failed: %v", err)
+	}
+	if !reflect.DeepEqual(tables, []string{"$SYS/#", "devices/+/telemetry"}) {
+		t.Fatalf("unexpected mqtt topic list: %#v", tables)
+	}
+
+	if _, _, err := client.Query(`SELECT COUNT(*) FROM "devices/+/telemetry"`); err == nil || !strings.Contains(err.Error(), "COUNT(*)") {
+		t.Fatalf("expected COUNT(*) to be rejected, got %v", err)
+	}
+}
+
+type fakeMQTTRuntime struct {
+	fetchResponses map[string][]mqttMessageRecord
+	fetchRequests  []mqttFetchRequest
+	published      []mqttPublishCommand
+	closed         bool
+}
+
+func (f *fakeMQTTRuntime) Close() error {
+	f.closed = true
+	return nil
+}
+
+func (f *fakeMQTTRuntime) Ping(ctx context.Context) error {
+	return nil
+}
+
+func (f *fakeMQTTRuntime) FetchMessages(ctx context.Context, request mqttFetchRequest) ([]mqttMessageRecord, error) {
+	f.fetchRequests = append(f.fetchRequests, request)
+	items := append([]mqttMessageRecord(nil), f.fetchResponses[request.Topic]...)
+	if request.Offset > 0 {
+		if request.Offset >= len(items) {
+			return []mqttMessageRecord{}, nil
+		}
+		items = items[request.Offset:]
+	}
+	if request.Limit > 0 && len(items) > request.Limit {
+		items = items[:request.Limit]
+	}
+	return items, nil
+}
+
+func (f *fakeMQTTRuntime) Publish(ctx context.Context, command mqttPublishCommand) (int64, error) {
+	f.published = append(f.published, command)
+	return 1, nil
+}