java 连接 websphere_本地java类访问websphere的JNDI

# 问题1、获取数据源时报错

# javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet

# 代码：dataSource=(DataSource)envCtx.lookup("jdbc/admin");

# 原因：本地测试如果要访问远程的JNDI资源，就必须用饱含JNDI环境参数Hashtable初始化InitialContext。

# 必要的环境参数如：

# Context.INITIAL_CONTEXT_FACTORY//连接工厂

# Context.PROVIDER_URL//访问连接

# Context.SECURITY_PRINCIPAL//安全用户

# Context.SECURITY_CREDENTIALS//用户密码

问题2、配置InitialContext

# websphere 7

Hashtable env= new Hashtable();

env.put(Context.INITIAL_CONTEXT_FACTORY,"com.ibm.websphere.naming.WsnInitialContextFactory");

env.put(Context.PROVIDER_URL, "iiop://localhost:2809");

ctx = new InitialContext(env);

dataSource=(DataSource)context.lookup("jdbc/admin");

# websphere 5

Hashtable parms = new Hashtable();

parms.put(Context.INITIAL_CONTEXT_FACTORY,

com.ibm.websphere.naming.WsnInitialContextFactory.class.getName());

parms.put(Context.PROVIDER_URL, "iiop://localhost:900/");

Context ic = new InitialContext();

DataSource ds = (DataSource) ic.lookup("userdb");

//jboss:

Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory"

Context.URL_PKG_PREFIXES, "org.jboss.naming"

Context.PROVIDER_URL, "localhost:1099"

//weblogic:

Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory"

Context.PROVIDER_URL, "t3://localhost:7001"

//apusic(金蝶):

Context.INITIAL_CONTEXT_FACTORY, "com.apusic.jndi.InitialContextFactory"

Context.PROVIDER_URL, "rmi://localhost:6888"

//WebSphere 5:

Context.INITIAL_CONTEXT_FACTORY, "com.ibm.websphere.naming.WsnInitialContextFactory"

Context.PROVIDER_URL, "iiop://localhost:900"

//J2EE SDK(J2EE RI):

Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.cosnaming.CNCtxFactory"

Context.PROVIDER_URL, "iiop://127.0.0.1:1050"

//SilverStream:

Context.INITIAL_CONTEXT_FACTORY, "com.sssw.rt.jndi.AgInitCtxFactory"

Context.PROVIDER_URL, "sssw://localhost:80"

//OC4J:

Context.INITIAL_CONTEXT_FACTORY, "com.evermind.server.rmi.RMIInitialContextFactory"

Context.PROVIDER_URL, "ormi://127.0.0.1/"

//WAS5:

Context.INITIAL_CONTEXT_FACTORY, "com.ibm.websphere.naming.WsnInitialContextFactory"

Context.PROVIDER_URL, "iiop://localhost:2809"

常用JNDI服务提供者连接工厂:

Filesystem: Com.sun.jndi.fscontext.FSContextFactory或者com.sun.jndi.fscontext.RefFSContextFactory

LDAPv3: Com.sun.jndi.ldap.LdapCtxFactory

NDS: com.novell.naming.service.nds.NdsInitialContextFactory

NIS: com.sun.jndi.nis.NISCtxFactory

RMI registry: com.sun.jndi.rmi.registry.RegistryContextFactory

IBM LDAP服务提供者: com.ibm.jndi.LDAPCtxFactory

BEA 名字服务提供者: weblogic.jndi.WLInitialContextFactory

JBOSS名字服务提供者: org.jnp.interfaces.NamingContextFactory

# 问题3、数据源配置成功后，Junit调试报错

# java.lang.NoClassDefFoundError:com/ibm/ws/bootstrp/raswsloggerFactory

# 原因：com.ibm.websphere.naming.WsnInitialContextFactory这个类找不到，需要把websphere的客户端使用的.jar包含在classpath中。

com.ibm.ws.ejb.thinclient_7.0.0.jar

# javax.naming.NamingException: Failed to initialize the ORB [Root exception is org.omg.CORBA.INITIALIZE: can't instantiate default ORB implementation com.ibm.CORBA.iiop.ORB vmcid: 0x0 minor code: 0 completed: No]

com.ibm.ws.orb_7.0.0.jar

#所需websphere环境中的jar包

com.ibm.ws.ejb.thinclient_7.0.0.jar

com.ibm.ws.orb_7.0.0.jar

(下面测试中未使用)

com.ibm.ws.runtime.jar

ibmorb.jar

总结：

我开始测试时只是在本地建了一个JAVA类并没有部署一个应用程序到websphere中。在websphere中部署一个应该程序后已经可以获得连接了。

不在websphere中部署应用程序而想测试连接是否成功，则需要在getConnection()方法中传入数据库用户名与密码。

如：

Hashtable parms = new Hashtable();

parms.put(Context.INITIAL_CONTEXT_FACTORY,

com.ibm.websphere.naming.WsnInitialContextFactory.class.getName());

parms.put(Context.PROVIDER_URL, "iiop://localhost:900/");

Context ic = new InitialContext();

ds = (DataSource) ic.lookup("jndi/dsc");

Connection conn = ds.getConnection("userdb","userdb");

com.ibm.ws.admin.client_7.0.0.jar

java.lang.NoClassDefFoundError: org/eclipse/wst/common/internal/emf/utilities/EncoderDecoder

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClass(ClassLoader.java:800)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)

at java.net.URLClassLoader.access$100(URLClassLoader.java:71)

at java.net.URLClassLoader$1.run(URLClassLoader.java:361)

at java.net.URLClassLoader$1.run(URLClassLoader.java:355)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:354)

at java.lang.ClassLoader.loadClass(ClassLoader.java:425)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)

at java.lang.ClassLoader.loadClass(ClassLoader.java:358)

at com.ibm.ws.naming.util.WsnInitCtxFactory.decodeCredentials(WsnInitCtxFactory.java:778)

at com.ibm.ws.naming.util.WsnInitCtxFactory.getInitialContextInternal(WsnInitCtxFactory.java:428)

at com.ibm.ws.naming.util.WsnInitCtx.getContext(WsnInitCtx.java:123)

at com.ibm.ws.naming.util.WsnInitCtx.getContextIfNull(WsnInitCtx.java:798)

at com.ibm.ws.naming.util.WsnInitCtx.lookup(WsnInitCtx.java:164)

at com.ibm.ws.naming.util.WsnInitCtx.lookup(WsnInitCtx.java:179)

at javax.naming.InitialContext.lookup(InitialContext.java:411)

at cn.com.icbc.netm.utils.DataSourceUtils.getDataSource(DataSourceUtils.java:52)

at cn.com.icbc.netm.utils.DataSourceUtils.getConnection(DataSourceUtils.java:69)

at cn.com.icbc.netm.demo.junitDemo.show(junitDemo.java:31)

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 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)

at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)

at org.junit.runners.BlockJUnit4Cla***unner.runNotIgnored(BlockJUnit4Cla***unner.java:79)

at org.junit.runners.BlockJUnit4Cla***unner.runChild(BlockJUnit4Cla***unner.java:71)

at org.junit.runners.BlockJUnit4Cla***unner.runChild(BlockJUnit4Cla***unner.java:49)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)

at org.junit.runners.ParentRunner.run(ParentRunner.java:236)

at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)

at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

Caused by: java.lang.ClassNotFoundException: org.eclipse.wst.common.internal.emf.utilities.EncoderDecoder

at java.net.URLClassLoader$1.run(URLClassLoader.java:366)

at java.net.URLClassLoader$1.run(URLClassLoader.java:355)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:354)

at java.lang.ClassLoader.loadClass(ClassLoader.java:425)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)

at java.lang.ClassLoader.loadClass(ClassLoader.java:358)

... 45 more

com.ibm.ws.ejb.thinclient_7.0.0.jar

获取datasource失败

javax.naming.NamingException: Failed to initialize the ORB [Root exception is java.lang.ClassCastException: com.sun.corba.se.impl.orb.ORBImpl cannot be cast to com.ibm.CORBA.iiop.ORB]

at com.ibm.ws.naming.util.Helpers.getOrb(Helpers.java:364)

at com.ibm.ws.naming.util.WsnInitCtxFactory.getInitialContextInternal(WsnInitCtxFactory.java:421)