整合两个工程遇到的小问题~记录一下

记录一下这个新的内容：整合两个项目过程中需要注意的问题（仅仅限于我这些小内容啦~）

有两个工程，一个是对外发布webservice的名为userservice的工程，另一个是以前做过的一个普通工程，名为userope。

要求将userope工程的功能整合到userservice工程中，其中，两个工程用的数据库一样，而且都用了hibernate；userope用了dwr、struts2、fitter。

两个整到一起，肯定有些重复的，有些冲突的，比如说jar包。在整合过程中，遇到两个比较典型的问题，两个问题都导致服务器没有办法启动，记录下来：

一、struts2：严重: Exception starting filter struts2

具体错误是：

Code:

严重: Exception starting filter struts2

Unable to load bean: type: class:com.opensymphony.xwork2.ObjectFactory - bean - jar:file:/C:/Tomcat%206.0/webapps/userservice/WEB-INF/lib/struts2-core-2.1.8.1.jar!/struts-default.xml:29:72

at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:208)

at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:101)

at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reload(DefaultConfiguration.java:131)

at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:52)

at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:395)

at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:452)

at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:205)

at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)

at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)

at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)

at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)

at org.apache.catalina.core.StandardContext.start(StandardContext.java:4488)

at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)

at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)

at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526)

at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1041)

at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:964)

at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)

at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)

at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)

at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)

at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)

at org.apache.catalina.core.StandardHost.start(StandardHost.java:722)

at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)

at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)

at org.apache.catalina.core.StandardService.start(StandardService.java:516)

at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)

at org.apache.catalina.startup.Catalina.start(Catalina.java:593)

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 org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)

at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)

Caused by: Bean type class com.opensymphony.xwork2.ObjectFactory with the name xwork has already been loaded by bean - jar:file:/C:/Tomcat%206.0/webapps/userservice/WEB-INF/lib/struts2-core-2.0.14.jar!/struts-default.xml:30:72 - bean - jar:file:/C:/Tomcat%206.0/webapps/userservice/WEB-INF/lib/struts2-core-2.1.8.1.jar!/struts-default.xml:29:72

at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:193)

... 33 more

2011-2-23 16:58:10 org.apache.catalina.core.StandardContext start

严重: Error filterStart

2011-2-23 16:58:10 org.apache.catalina.core.StandardContext start

严重: Context [/userservice] startup failed due to previous errors

2011-2-23 16:58:10 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc

严重: A web application registered the JBDC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.

2011-2-23 16:58:10 org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap

严重: A web application created a ThreadLocal with key of type [null] (value [com.sun.faces.config.ConfigureListener$1@33aa44]) and a value of type [null] (value [null]) but failed to remove it when the web application was stopped. To prevent a memory leak, the ThreadLocal has been forcibly removed.



仔细一检查，jar有冲突，lib里面有两个，一个是struts2-core-2.1.8.1.jar，一个是struts2-core-2.0.14.jar。

解决办法肯定是将其中一个删除，但是，删除哪个取决于jar包都是哪些。我的工程是要删除struts2-core-2.1.8.1.jar。

二、The package location package is already been used by another package at location package

这个错误的原因是，一个jar包用了两次，我的工程整合的时候错误在于：一次将struts2 jar包复制到了lib下，又一次在myeclipse里面又一次导入了struts2 jar包，同样，删除其中一个就行了。

最后，想提醒一下的是：整合后注意链接是否改好了。