context.lookup（数据源）返回org.jboss.jca.adapters.jdbc.WrapperDataSource

Question

我正在做一个需要在weblogic和jboss上都可以部署的项目。我从资料来源汇编了wildfly。现在，我正在尝试使用命名来获取数据源。应用程序在JBOSS EAP 6.1上运行良好，我能够以javax的形式获得数据源参考。sql。数据源但现在在widlfly中，使用以下代码

dataSource = (javax.sql.DataSource) context.lookup("datasource");

它抛出异常

java.lang.ClassCastException: org.jboss.jca.adapters.jdbc.WrapperDataSource cannot be cast to javax.sql.DataSource

如果我尝试使用以下代码，

Object obj = context.lookup("datasource");
dataSource = (javax.sql.DataSource) obj;

它不抛出上述异常，而是使用数据源，它抛出异常

Caused by: java.lang.IncompatibleClassChangeError: Class org.jboss.jca.adapters.jdbc.WrapperDataSource does not implement the requested interface javax.sql.DataSource

然而，看看类的代码，我们可以看到它实现了javax。sql。数据源

有谁能告诉我如何使用castedWrapperDataSource或将数据源作为javax返回。sql。数据源。

服务器信息：

Calling "C:\wildfly-8.0.0.Beta2-SNAPSHOT\bin\standalone.conf.bat"
Setting JAVA property to "C:\Progra~2\Java\jdk1.7.0_40\bin\java"
===============================================================================

  JBoss Bootstrap Environment

  JBOSS_HOME: "C:\wildfly-8.0.0.Beta2-SNAPSHOT"

  JAVA: "C:\Progra~2\Java\jdk1.7.0_40\bin\java"

===============================================================================

Listening for transport dt_socket at address: 8787
16:04:19,731 INFO  [org.jboss.modules] (main) JBoss Modules version 1.3.0.Final
16:04:19,903 INFO  [org.jboss.msc] (main) JBoss MSC version 1.2.0.Beta2
16:04:19,997 INFO  [org.jboss.as] (MSC service thread 1-6) JBAS015899: WildFly 8.0.0.Beta2-SNAPSHOT "WildFly" starting
16:04:21,138 INFO  [org.jboss.as.server] (Controller Boot Thread) JBAS015888: Creating http management service using socket-binding (management-http)
16:04:21,138 INFO  [org.xnio] (MSC service thread 1-1) XNIO version 3.1.0.CR7
16:04:21,153 INFO  [org.xnio.nio] (MSC service thread 1-1) XNIO NIO Implementation Version 3.1.0.CR7
16:04:21,309 INFO  [org.jboss.remoting] (MSC service thread 1-1) JBoss Remoting version 4.0.0.Beta1
16:04:21,341 INFO  [org.jboss.as.webservices] (ServerService Thread Pool -- 50) JBAS015537: Activating WebServices Extension
16:04:21,356 INFO  [org.jboss.as.security] (ServerService Thread Pool -- 46) JBAS013171: Activating Security Subsystem
16:04:21,372 INFO  [org.jboss.as.security] (MSC service thread 1-8) JBAS013170: Current PicketBox version=4.0.19.Final
16:04:21,388 INFO  [org.jboss.as.naming] (ServerService Thread Pool -- 41) JBAS011800: Activating Naming Subsystem
16:04:21,388 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 33) JBAS010280: Activating Infinispan subsystem.
16:04:21,388 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-3) JBAS017502: Undertow 1.0.0.Beta18 starting
16:04:21,403 INFO  [org.wildfly.extension.undertow] (ServerService Thread Pool -- 49) JBAS017502: Undertow 1.0.0.Beta18 starting
16:04:21,403 INFO  [org.jboss.as.jsf] (ServerService Thread Pool -- 39) JBAS012605: Activated the following JSF Implementations: [main]
16:04:21,419 INFO  [org.jboss.as.connector.logging] (MSC service thread 1-7) JBAS010408: Starting JCA Subsystem (IronJacamar 1.1.0.Final)
16:04:21,450 INFO  [org.jboss.as.naming] (MSC service thread 1-3) JBAS011802: Starting Naming Service
16:04:21,466 INFO  [org.jboss.as.mail.extension] (MSC service thread 1-7) JBAS015400: Bound mail session [java:jboss/mail/Default]
16:04:21,466 INFO  [org.jboss.as.connector.subsystems.datasources] (ServerService Thread Pool -- 28) JBAS010403: Deploying JDBC-compliant driver class org.h2.Driver (version 1.3)
16:04:21,481 INFO  [org.jboss.as.connector.deployers.jdbc] (MSC service thread 1-3) JBAS010417: Started Driver service with driver-name = h2
16:04:21,559 INFO  [org.wildfly.extension.undertow] (ServerService Thread Pool -- 49) JBAS017527: Creating file handler for path C:\wildfly-8.0.0.Beta2-SNAPSHOT/welcome-content
16:04:21,700 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-6) JBAS017525: Started server default-server.
16:04:21,700 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-4) JBAS017531: Host default-host starting
16:04:21,763 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-6) JBAS017519: Undertow HTTP listener default listening on localhost/127.0.0.1:8080
16:04:21,841 INFO  [org.jboss.as.connector.subsystems.datasources] (ServerService Thread Pool -- 28) JBAS010403: Deploying JDBC-compliant driver class com.ibm.db2.jcc.DB2Driver (version 3.57)
16:04:21,841 INFO  [org.jboss.as.connector.deployers.jdbc] (MSC service thread 1-1) JBAS010417: Started Driver service with driver-name = DB2Driver
16:04:22,091 INFO  [org.jboss.as.server.deployment.scanner] (MSC service thread 1-5) JBAS015012: Started FileSystemDeploymentService for directory C:\wildfly-8.0.0.Beta2-SNAPSHOT\standalone\deployments
16:04:22,091 INFO  [org.jboss.as.remoting] (MSC service thread 1-1) JBAS017100: Listening on 127.0.0.1:9999
16:04:22,122 INFO  [org.jboss.ws.common.management] (MSC service thread 1-6) JBWS022052: Starting JBoss Web Services - Stack CXF Server 4.2.1.Final
16:04:22,122 INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-8) JBAS010400: Bound data source [java:jboss/datasources/ExampleDS]
16:04:22,122 INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-4) JBAS010400: Bound data source [java:/rapiddb]
16:04:22,247 INFO  [org.jboss.as] (Controller Boot Thread) JBAS015961: Http management interface listening on http://127.0.0.1:9990/management
16:04:22,247 INFO  [org.jboss.as] (Controller Boot Thread) JBAS015951: Admin console listening on http://127.0.0.1:9990
16:04:22,247 INFO  [org.jboss.as] (Controller Boot Thread) JBAS015874: WildFly 8.0.0.Beta2-SNAPSHOT "WildFly" started in 2828ms - Started 186 of 223 services (62 services are lazy, passive or on-demand)

Answer 1

我把这个问题发布在WildFly论坛（WildFly Thread）上，发现还有另一个罐子包含javax.sql.DataSource接口。

我使用了一个名为jarscan的实用程序。jar在我的模块中搜索接口，发现一个jar包含另一个javax。sql。数据源类。删除jar表单模块解决了这个问题。

Answer 2

我假设这与您在服务器上的数据源中配置JDBC驱动程序的方式有关，或者您在包中提供的另一个驱动程序与您使用的实际驱动程序发生冲突。

类似的错误可在以下位置找到：https://community.jboss.org/message/250795

如果这不起作用，还可以发布遇到问题的服务器的版本。只是为了确保您不会受到服务器上固定数据源补丁的影响。