从 master-datasources.xml 访问 Carbon 数据源

Question

我想在 java 应用程序中使用 Carbon 数据源创建数据库连接。我收到以下异常

javax.naming.NameNotFoundException: jdbc at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:116) at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:124) at javax.naming.InitialContext.lookup(InitialContext.java:411) at org.wso2.ApiInvocationHnadler.DBConnection.testJndiDataSource(DBConnection.java:77) at org.wso2.ApiInvocationHnadler.ApiInvocationHandler.handleRequest(ApiInvocationHandler.java:35) at org.apache.synapse.rest.API.process(API.java:284) at org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:83) at org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:64) at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:220) at org.apache.synapse.core.axis2.SynapseMessageReceiver.receive(SynapseMessageReceiver.java:83) at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180) at org.wso2.carbon.core.multitenancy.MultitenantMessageReceiver.processRESTRequest(MultitenantMessageReceiver.java:558) at org.wso2.carbon.core.multitenancy.MultitenantMessageReceiver.doNhttpREST(MultitenantMessageReceiver.java:498) at org.wso2.carbon.core.multitenancy.MultitenantMessageReceiver.doREST(MultitenantMessageReceiver.java:317) at org.wso2.carbon.core.multitenancy.MultitenantMessageReceiver.processRequest(MultitenantMessageReceiver.java:210) at org.wso2.carbon.core.multitenancy.MultitenantMessageReceiver.receive(MultitenantMessageReceiver.java:77) at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180) at org.apache.synapse.transport.passthru.ServerWorker.processNonEntityEnclosingRESTHandler(ServerWorker.java:344) at org.apache.synapse.transport.passthru.ServerWorker.run(ServerWorker.java:168) at org.apache.axis2.transport.base.threads.NativeWorkerPool.run(NativeWorkerPool.java:172) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722)

这里是高手-datasources.xml

<datasource>
            <name>test_db</name>
            <description>The datasource used for </description>
            <jndiConfig>
                    <name>jdbc/test_db</name>
            </jndiConfig>
            <definition type="RDBMS">
                    <configuration>
                            <url>jdbc:mysql://localhost:3306/test_db?autoReconnect=true</url>
                            <username>root</username>
                            <password>root</password>
                            <driverClassName>com.mysql.jdbc.Driver</driverClassName>
                            <maxActive>50</maxActive>
                            <maxWait>60000</maxWait>
                            <testOnBorrow>true</testOnBorrow>
                            <validationQuery>SELECT 1</validationQuery>
                            <validationInterval>30000</validationInterval>
                    </configuration>
            </definition>
    </datasource>

Java代码

      Hashtable env = new Hashtable();
      env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.rmi.registry.RegistryContextFactory");
      env.put(Context.PROVIDER_URL, "rmi://localhost:2199");
      InitialContext ctx = new InitialContext(env);
      DataSource ds = (DataSource) ctx.lookup("jdbc/test_db");

我该如何解决这个问题？

Answer 1

我想指出我用来创建该数据源的代码。您可以从 here 中找到它。只需使用默认构造函数创建 InitialContext，我就可以从 master-datasources.xml 文件加载数据源。

dataSource = (DataSource) InitialContext.doLookup(dataSourceName);`

Answer 2

问题是由于租户流引起的，必须获取超级租户流并查找数据源

从 master-datasources.xml 访问 Carbon 数据源

Access Carbon datasource from master-datasources.xml

java

jndi

datasource

wso2

wso2carbon