Java 如何从容器外部访问 Websphere 7.0 中定义的 JNDI 命名空间？
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How to access the JNDI namespace defined in the Websphere 7.0 from outside of the container?
提问by
I am tring to lookup the resource defined on the Websphere aplication server 7.0 from the out side of the Container with using the iiop protocol as below:
我正在尝试使用 iiop 协议从容器的外部查找 Websphere 应用程序服务器 7.0 上定义的资源，如下所示：
Java code for (RMI client)Test.jar:
（RMI 客户端）Test.jar 的 Java 代码：
public static void main(String[] args){
Hashtable<Object, Object> properties = new Hashtable<Object, Object>();
properties.put(Context.INITIAL_CONTEXT_FACTORY,
"com.ibm.websphere.naming.WsnInitialContextFactory");
properties.put(Context.PROVIDER_URL, "iiop://localhost:2809");
InitialContext intCt;
try {
InitialContext initCtx = new InitialContext(properties);
Object obj = intCt.lookup(JNDI_NAME);
}catch (NamingException namingE) {
System.out.println("Naming Exception occurred :");
namingE.printStackTrace();
}
}
Cmmand file to call the Test.jar:
调用Test.jar的命令文件：
set appClassPath=C:\WebSphere\AppServer7.0\deploytool\itp\plugins\com.ibm.websphere.v7_7.0.1.v20090422_1423\wasJars\naming.jar;C:\WebSphere\AppServer7.0\deploytool\itp\plugins\com.ibm.websphere.v7_7.0.1.v20090422_1423\wasJars\namingclient.jar;C:\WebSphere\AppServer7.0\properties;C:\Batch\CommandFiles\JobServer\Test.jar C:\WebSphere\AppServer7.0\java\jre\bin\java -jar -cp "%appClassPath%" C:\Batch\CommandFiles\JobServer\Test.jar %Parameters%
NOTE : Please not that I am runnig the client on my local machin and bootstrap host is : localhost and the port is 2809.
注意：请注意，我在本地机器上运行客户端，引导主机是：localhost，端口是 2809。
At the time of running the Test.jar code form the command file I am getting the following error:
在从命令文件运行 Test.jar 代码时，我收到以下错误：
javax.naming.NoInitialContextException: Failed to create InitialContext using factory specified in hashtable {java.naming.provider.url=iiop://localhost:2809, java.naming.factory.initial=com.ibm.websphere.naming.WsnInitialContextFactory} [Root exception is java.lang.NullPointerException]
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:243)
at javax.naming.InitialContext.initializeDefaultInitCtx(InitialContext.java:327)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:357)
at javax.naming.InitialContext.internalInit(InitialContext.java:295)
at javax.naming.InitialContext.(InitialContext.java:212)
at com.uuic.ets.rmi.server.client.Client.main(Client.java:130)
Caused by: java.lang.NullPointerException
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:235)
... 5 more
I have no idea that why this code is not able to instantiat the InitialContext(Hashmap env). This same code is running in Websphere application server version 5.1 but having problem in Websphere application server version 7.0.
我不知道为什么这段代码不能实例化InitialContext(Hashmap env). 相同的代码在 Websphere 应用程序服务器 5.1 版中运行，但在 Websphere 应用程序服务器 7.0 版中出现问题。
回答by Brett Kail
Using JARs from WAS_HOME/deploytool for the classpath is not supported. Try using the documented EJB thinclientwith WAS_HOME/runtimes/com.ibm.ws.ejb.thinclient_7.0.0.jar.
不支持将来自 WAS_HOME/deploytool 的 JAR 用于类路径。尝试将文档化的EJB 瘦客户端与 WAS_HOME/runtimes/com.ibm.ws.ejb.thinclient_7.0.0.jar 一起使用。
