所以我有一个MySQL数据库,我在WebLogic的本地实例上有一个连接到该数据库的数据源.我正在尝试编写一些只需连接和查询的客户端代码.我在从数据源获取连接时遇到问题.到目前为止,这是我的代码.我正在运行WebLogic 12c.

    import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.sqlException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;
public class ConnectionTest {
    public static void main(String... args) {
        ConnectionTest tCon = new ConnectionTest();
        tCon.TestConnection();
    }
    public void TestConnection() {
        Context ctx = null;
        Connection conn = null;
        Statement stmt = null;
        ResultSet rs = null;
        try {
            HashtablesqlException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (stmt != null)
                    stmt.close();
                if (conn != null)
                    conn.close();
            } catch (sqlException e) {
                e.printStackTrace();
            }
        }
    }
}

这在ds.getConnection()失败,但有以下异常：

java.lang.ClassCastException: weblogic.jdbc.common.internal.ConnectionEnv cannot be cast to java.io.Serializable
    at weblogic.iiop.IIOPOutputStream.writeObject(IIOPOutputStream.java:2285)
    at weblogic.utils.io.ObjectStreamClass.writeFields(ObjectStreamClass.java:414)
    at weblogic.corba.utils.ValueHandlerImpl.writeValueData(ValueHandlerImpl.java:235)
    at weblogic.corba.utils.ValueHandlerImpl.writeValueData(ValueHandlerImpl.java:225)
    at weblogic.corba.utils.ValueHandlerImpl.writeValue(ValueHandlerImpl.java:182)
    at weblogic.iiop.IIOPOutputStream.write_value(IIOPOutputStream.java:1983)
    at weblogic.iiop.IIOPOutputStream.write_value(IIOPOutputStream.java:2021)
    at weblogic.iiop.IIOPOutputStream.writeObject(IIOPOutputStream.java:2285)
    at weblogic.jdbc.common.internal.RmiDataSource_WLSkel.invoke(Unknown Source)
    at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:695)
    at weblogic.rmi.cluster.ClusterableServerRef.invoke(ClusterableServerRef.java:230)
    at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:520)
    at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
    at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:146)
    at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:516)
    at weblogic.rmi.internal.wls.WLSExecuteRequest.run(WLSExecuteRequest.java:118)
    at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)
    at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)

我的buildpath中有wlclient.jar,wlsafclient.jar和weblogic.jar.我已经尝试了添加/删除这些罐子的各种组合,但无论我做什么,我仍然会得到相同的错误.任何帮助将不胜感激.