调用简单地建立我所称的JNDI未绑定WebLogic通用连接池（UCP）数据源 jndiUnboundDataSource（） ，并且能够创建＆安培;返回一个可用的数据库连接。
jndiBindDataSource（） 方法引发以下异常：
意外异常：java.rmi.RemoteException：oracle.ucp.jdbc.PoolDataSourceImpl $ 23
jndiBindDataSource（） 方法正在尝试创建UCP数据源，然后将其绑定到JNDI上下文...意图是 < em> jndiBoundDataSource（） 方法将能够从JNDI上下文中检索绑定的UCP数据源。此时我还没有测试 jndiBoundDataSource（） ，因为 jndiBindDataSource（） 失败。
WebLogic 12.1.3 - 通用连接池ConnectionClassFactory：
com.mysql.jdbc.jdbc2.optional.MysqlDataSource
您应该可以从以下来源重新创建错误：
package com.corporate.experiments;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;
import oracle.ucp.jdbc.PoolDataSource;
import oracle.ucp.jdbc.PoolDataSourceFactory;
import oracle.ucp.jdbc.ValidConnection;
public class WebLogicUniversalConnectionPool extends HttpServlet
{
@SuppressWarnings("oracle.jdeveloper.java.serialversionuid-stale") private static final long serialVersionUID = 1L;
// http://docs.oracle.com/middleware/1213/wls/JDBCP/ds_annotation.htm#BABEDEJJ
// http://docs.oracle.com/middleware/1213/wls/JDBCP/ds_annotation.htm#BABDBHCD
/**
* The name element uniquely identifies a DataSource and is registered with JNDI.
* The value specified in the name element begins with a namespace scope.
*
* Java EE Data Source Naming Scopes:
*
* java:comp - Names in this namespace have component visibility.
* java:module - Names in this namespace are shared by all components in a module, for example, the EJB components defined in an a ejb-jar.xml file.
* java:app - Names in this namespace are shared by all components and modules in an application, for example, the application-client, web, and EJB components in an .ear file.
* java:global - Names in this namespace are shared by all the applications in the server.
*
* Java EE Data Source Naming Conventions:
*
* Component visibility:
* ---------------------
* appname @ modulename @ componentname @ dsname
*
* Module visibility:
* ------------------
* appname @ modulename @ dsname
*
* Application visibility:
* -----------------------
* appname @ dsname
*
* Global visibility:
* ------------------
* dsname
*/
private static final String DATA_SOURCE_NAME = "app/content";
private static final String DATA_SOURCE_NAMESPACE = "java:" + DATA_SOURCE_NAME;
/**
* @param request
* @param response
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response)
{
// http://docs.oracle.com/database/121/JJUCP/connect.htm#JJUCP8139
try
{
jndiUnboundDataSource();
}
catch (Exception exception)
{
return; // place break point here
}
// create a context bound connection pool data source
try
{
jndiBindDataSource(); // Java Naming and Directory Interface (JNDI)
}
catch (Exception exception)
{
return; // place break point here
}
// get a connection from the bound connection pool data source
try
{
jndiBoundDataSource(); // Java Naming and Directory Interface (JNDI)
}
catch (Exception exception)
{
return; // place break point here
}
return; // place break point here
}
// create a context unbound connection pool data source and get a connection
private DataSource jndiUnboundDataSource() throws SQLException
{
DataSource dataSource = createDataSource();
validateDataSource(dataSource);
return dataSource;
}
// create a context and bind a connection pool data source
private DataSource jndiBindDataSource() throws NamingException, SQLException
{
InitialContext context = createInitialContext();
DataSource dataSource = createDataSource();
validateDataSource(dataSource);
// Unexpected exception: java.rmi.RemoteException: oracle.ucp.jdbc.PoolDataSourceImpl$23;
context.bind(DATA_SOURCE_NAME, dataSource);
return dataSource;
}
// create a context and look up a connection pool data source
private DataSource jndiBoundDataSource() throws NamingException, SQLException
{
InitialContext context = initialContext();
PoolDataSource poolDataSource = (PoolDataSource) context.lookup(DATA_SOURCE_NAME);
validateDataSource(poolDataSource);
return poolDataSource;
}
private InitialContext initialContext() throws NamingException
{
Hashtable<String, String> environment = new Hashtable<String, String> ();
environment.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
environment.put(Context.PROVIDER_URL, "t3://localhost:7101");
environment.put(Context.SECURITY_AUTHENTICATION, "Container");
environment.put(Context.SECURITY_PRINCIPAL, "development");
environment.put(Context.SECURITY_CREDENTIALS, "development");
return new InitialContext(environment);
}
private InitialContext createInitialContext() throws NamingException
{
InitialContext initialContext = initialContext();
initialContext.createSubcontext("corporate");
return initialContext;
}
private DataSource createDataSource() throws SQLException
{
PoolDataSource poolDataSource = PoolDataSourceFactory.getPoolDataSource();
poolDataSource.setConnectionFactoryClassName("com.mysql.jdbc.jdbc2.optional.MysqlDataSource");
poolDataSource.setURL("jdbc:mysql://localhost:3306/metadata");
poolDataSource.setUser("root");
poolDataSource.setPassword("root");
return poolDataSource;
}
private void validateDataSource(DataSource dataSource) throws SQLException
{
Connection connection = dataSource.getConnection();
validateConnection(connection);
connection.close();
}
private void validateConnection(Connection connection) throws SQLException
{
if (null == connection)
{
throw new SQLException("Null connection: servlet data source namespace \"" + DATA_SOURCE_NAMESPACE + "\"");
}
if (!((ValidConnection) connection).isValid())
{
throw new SQLException("Invalid connection: servlet data source namespace \"" + DATA_SOURCE_NAMESPACE + "\"");
}
}
}
以下是例外：
Unexpected exception: java.rmi.RemoteException: oracle.ucp.jdbc.PoolDataSourceImpl$23; nested exception is:
java.io.NotSerializableException: oracle.ucp.jdbc.PoolDataSourceImpl$23
at weblogic.jndi.internal.WLEventContextImpl.copyObject(WLEventContextImpl.java:400)
at weblogic.jndi.internal.WLEventContextImpl.bind(WLEventContextImpl.java:279)
at javax.naming.InitialContext.bind(InitialContext.java:419)
at com.corporate.experiments.WebLogicUniversalConnectionPool.jndiBindDataSource(WebLogicUniversalConnectionPool.java:123)
at com.corporate.experiments.WebLogicUniversalConnectionPool.doGet(WebLogicUniversalConnectionPool.java:81)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:844)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:280)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:254)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:136)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:346)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:25)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79)
at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:137)
at java.security.AccessController.doPrivileged(Native Method)
at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315)
at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:460)
at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:120)
at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:217)
at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:81)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79)
at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:220)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3436)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3402)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:57)
at weblogic.servlet.internal.WebAppServletContext.doSecuredExecute(WebAppServletContext.java:2285)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2201)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2179)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1572)
at weblogic.servlet.provider.ContainerSupportProviderImpl$WlsRequestExecutor.run(ContainerSupportProviderImpl.java:255)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:311)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:263)
Caused by: java.io.NotSerializableException: oracle.ucp.jdbc.PoolDataSourceImpl$23
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1183)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547)
at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:440)
at oracle.ucp.jdbc.PoolDataSourceImpl.writeObject(PoolDataSourceImpl.java:3015)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:988)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1495)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:347)
at weblogic.rmi.extensions.server.CBVOutputStream.writeObject(CBVOutputStream.java:80)
at weblogic.jndi.internal.JNDIHelper.copyObject(JNDIHelper.java:39)
at weblogic.jndi.WLSJNDIEnvironmentImpl.copyObject(WLSJNDIEnvironmentImpl.java:78)
at weblogic.jndi.internal.WLEventContextImpl.copyObject(WLEventContextImpl.java:395)
... 34 more
答案 0 :(得分：0)
这看起来像是在尝试定义远程数据源。
出于多种原因，你不能这样做，其中最重要的原因是javax.sql.DataSource没有扩展java.io.Serializable。
您无需创建自己的数据源并将其绑定。您可以使用WebLogic控制台对其进行定义，并在此时为其指定JNDI名称。然后WLS负责创建数据源并为您绑定它。所有完整堆栈的Java EE服务器（以及Tomcat）都是这样做的。