非WEB应用程序访问WebLogic获得数据库连接时遇到的问题及解决方法

xywuyiba8

近日得到一项任务，因连接数据库的用户密码是明文放在配置文件中的，领导要求改安全一点。这个项目不是WEB项目，是直接从main函数里启动的。
初步分析后，领导建议了2种解决方案：
1，将密码加密。每次使用密码时，先判断有没有加密，如果没有加密，则加密，然后将加密后的密码保存到配置文件中。否则直接使用。
2，能不能将非WEB程序部署到WebLogic（领导觉得这个方法最方便）

第1方案随便试了下，感觉稍显麻烦。因为不想往项目里加jar包。不加的话，则需要生成一个密钥。反正感觉不爽。所以，开始研究第2方案。
第2方案经研究得出结论，非WEB应用程序无法直接部署到WebLogic中去。
在郁闷的搜索了一会以后，偶然在网上发现有这样一种写法：

Hashtable ht = new Hashtable();
ht.put(Context.INITIAL_CONTEXT_FACTORY,”weblogic.jndi.WLInitialContextFactory”);
ht.put(Context.PROVIDER_URL, “t3://localhost:7007″);
Context initial = new InitialContext(ht);
DataSource ds = (DataSource) initial.lookup(“JNDI”);

拿去一试，果然DataSource不为空，仿佛看到了希望。但是-------
调用：ds.getConnection();时，报了错，如下：

java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at weblogic.rmi.internal.StubGenerator.generateStub(StubGenerator.java:805)
at weblogic.rmi.internal.StubGenerator.generateStub(StubGenerator.java:790)
at weblogic.rmi.extensions.StubFactory.getStub(StubFactory.java:79)
at weblogic.rmi.utils.io.RemoteObjectReplacer.resolveObject(RemoteObjectReplacer.java:222)
at weblogic.rmi.internal.StubInfo.readResolve(StubInfo.java:142)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeReadResolve(ObjectStreamClass.java:1061)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1762)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:114)
at weblogic.rjvm.MsgAbbrevInputStream.readObject(MsgAbbrevInputStream.java:111)
at weblogic.rmi.internal.ObjectIO.readObject(ObjectIO.java:56)
at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:159)
at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:285)
at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:244)
at weblogic.jdbc.common.internal.RmiDataSource_814_WLStub.getConnection(Unknown Source)
at com.xjf.test.TestMain.main(TestMain.java:82)
Caused by: java.lang.IllegalAccessError: tried to access method weblogic.rmi.internal.StubInfo.getInterfaces(Ljava/lang/ClassLoader;)[Ljava/lang/Class; from class weblogic.jdbc.rmi.internal.ConnectionImpl_weblogic_jdbc_wrapper_PoolConnection_com_informix_jdbc_IfxSqliConnect_814_WLStub
at weblogic.jdbc.rmi.internal.ConnectionImpl_weblogic_jdbc_wrapper_PoolConnection_com_informix_jdbc_IfxSqliConnect_814_WLStub.ensureInitialized(Unknown Source)
at weblogic.jdbc.rmi.internal.ConnectionImpl_weblogic_jdbc_wrapper_PoolConnection_com_informix_jdbc_IfxSqliConnect_814_WLStub.<init>(Unknown Source)
... 29 more
--------------- nested within: ------------------
weblogic.utils.AssertionError: ***** ASSERTION FAILED *****[ Failed to generate class for weblogic.jdbc.rmi.internal.ConnectionImpl_weblogic_jdbc_wrapper_PoolConnection_com_informix_jdbc_IfxSqliConnect_814_WLStub ] - with nested exception:
[java.lang.reflect.InvocationTargetException - with target exception:
[java.lang.IllegalAccessError: tried to access method weblogic.rmi.internal.StubInfo.getInterfaces(Ljava/lang/ClassLoader;)[Ljava/lang/Class; from class weblogic.jdbc.rmi.internal.ConnectionImpl_weblogic_jdbc_wrapper_PoolConnection_com_informix_jdbc_IfxSqliConnect_814_WLStub]]
at weblogic.rmi.internal.StubGenerator.generateStub(StubGenerator.java:807)
at weblogic.rmi.internal.StubGenerator.generateStub(StubGenerator.java:790)
at weblogic.rmi.extensions.StubFactory.getStub(StubFactory.java:79)
at weblogic.rmi.utils.io.RemoteObjectReplacer.resolveObject(RemoteObjectReplacer.java:222)
at weblogic.rmi.internal.StubInfo.readResolve(StubInfo.java:142)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeReadResolve(ObjectStreamClass.java:1061)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1762)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:114)
at weblogic.rjvm.MsgAbbrevInputStream.readObject(MsgAbbrevInputStream.java:111)
at weblogic.rmi.internal.ObjectIO.readObject(ObjectIO.java:56)
at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:159)
at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:285)
at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:244)
at weblogic.jdbc.common.internal.RmiDataSource_814_WLStub.getConnection(Unknown Source)
at com.xjf.test.TestMain.main(TestMain.java:82)
Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at weblogic.rmi.internal.StubGenerator.generateStub(StubGenerator.java:805)
at weblogic.rmi.internal.StubGenerator.generateStub(StubGenerator.java:790)
at weblogic.rmi.extensions.StubFactory.getStub(StubFactory.java:79)
at weblogic.rmi.utils.io.RemoteObjectReplacer.resolveObject(RemoteObjectReplacer.java:222)
at weblogic.rmi.internal.StubInfo.readResolve(StubInfo.java:142)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeReadResolve(ObjectStreamClass.java:1061)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1762)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:114)
at weblogic.rjvm.MsgAbbrevInputStream.readObject(MsgAbbrevInputStream.java:111)
at weblogic.rmi.internal.ObjectIO.readObject(ObjectIO.java:56)
at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:159)
at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:285)
at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:244)
at weblogic.jdbc.common.internal.RmiDataSource_814_WLStub.getConnection(Unknown Source)
at com.xjf.test.TestMain.main(TestMain.java:82)
Caused by: java.lang.IllegalAccessError: tried to access method weblogic.rmi.internal.StubInfo.getInterfaces(Ljava/lang/ClassLoader;)[Ljava/lang/Class; from class weblogic.jdbc.rmi.internal.ConnectionImpl_weblogic_jdbc_wrapper_PoolConnection_com_informix_jdbc_IfxSqliConnect_814_WLStub
at weblogic.jdbc.rmi.internal.ConnectionImpl_weblogic_jdbc_wrapper_PoolConnection_com_informix_jdbc_IfxSqliConnect_814_WLStub.ensureInitialized(Unknown Source)
at weblogic.jdbc.rmi.internal.ConnectionImpl_weblogic_jdbc_wrapper_PoolConnection_com_informix_jdbc_IfxSqliConnect_814_WLStub.<init>(Unknown Source)
... 29 more
--------------- nested within: ------------------
weblogic.utils.AssertionError: ***** ASSERTION FAILED *****[ Failed to generate class for weblogic.jdbc.rmi.internal.ConnectionImpl_weblogic_jdbc_wrapper_PoolConnection_com_informix_jdbc_IfxSqliConnect_814_WLStub ] - with nested exception:
[java.lang.reflect.InvocationTargetException - with target exception:
[java.lang.IllegalAccessError: tried to access method weblogic.rmi.internal.StubInfo.getInterfaces(Ljava/lang/ClassLoader;)[Ljava/lang/Class; from class weblogic.jdbc.rmi.internal.ConnectionImpl_weblogic_jdbc_wrapper_PoolConnection_com_informix_jdbc_IfxSqliConnect_814_WLStub]]
at weblogic.rmi.internal.StubGenerator.generateStub(StubGenerator.java:807)
at weblogic.rmi.internal.StubGenerator.generateStub(StubGenerator.java:790)
at weblogic.rmi.extensions.StubFactory.getStub(StubFactory.java:79)
at weblogic.rmi.utils.io.RemoteObjectReplacer.resolveObject(RemoteObjectReplacer.java:222)
at weblogic.rmi.internal.StubInfo.readResolve(StubInfo.java:142)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeReadResolve(ObjectStreamClass.java:1061)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1762)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:114)
at weblogic.rjvm.MsgAbbrevInputStream.readObject(MsgAbbrevInputStream.java:111)
at weblogic.rmi.internal.ObjectIO.readObject(ObjectIO.java:56)
at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:159)
at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:285)
at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:244)
at weblogic.jdbc.common.internal.RmiDataSource_814_WLStub.getConnection(Unknown Source)
at com.xjf.test.TestMain.main(TestMain.java:82)


傻眼了，从来没见过这种错误。网上搜这个错误都是得到跟这不沾什么边的结果。
结果在试了N个关键字后，搜到一个跟：java.lang.IllegalAccessError有关的页面，但不是我这种错误。说是在使用ant时遇到这个问题，是由于jar包的版本不对，更换了版本后就正常了。
抱着试一试的心态，我从本机WebLogic中把weblogic.jar复制出来，加入到工程中，结果果然就是这个包的问题。换个包就没事了。这个问题浪费了我不少时间，所以在这里把解决方法记录在此，希望可以帮到后面遇到这个问题的人。