我试图找出我的应用程序的一部分突然停止工作的原因。我正在使用 Weblogic 8.1.4.0 和 Hibernate 运行 Spring 1。报告生成器是失败的部分，首先在我们的生产服务器上，然后在周五我进行试验时在开发和质量检查服务器上。我没有对代码进行任何更改，但我现在在映射查询的编译语句中遇到了 Missing Data Source 异常。唯一改变的是数据库中的几条记录，但它们是相当简单的更改，我怀疑它们会产生影响。在这两个开发应用程序可能失败的时候，我还从星期五收到了以下错误：
这是来自开发服务器的日志中的错误：
04-06 14:31:34 ERROR [main] org.springframework.web.context.ContextLoader: Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'myDataSource' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Initialization of bean failed; nested exception is javax.naming.LinkException:
大约 10 分钟后，当我部署到 QA 服务器时，也出现了类似的情况。
它指的是在 WebLogic 中定义的数据源和连接池。我已经检查并测试了连接，似乎没有任何问题。
什么可能会导致这种情况？我什至恢复到上周的构建以确保它不是代码更改，但发生了相同的数据源所需的异常：
04-07 16:15:04 DEBUG [ExecuteThread: '14' for queue: 'default'] org.eei.survey.data.RegionDataDAO$NERCRegionMappingQuery: RdbmsOperation with SQL [{call prc_NERCRegions_get}] compiled
04-07 16:15:04 ERROR [ExecuteThread: '14' for queue: 'default'] error.jsp: Error page displayed to user due to unhandled exception
org.springframework.dao.InvalidDataAccessApiUsageException: dataSource is required
at org.springframework.jdbc.object.RdbmsOperation.compile(RdbmsOperation.java:300)
at org.eei.survey.data.ReportDAO$NCRMappingQuery.<init>(ReportDAO.java:535)
at org.eei.survey.data.ReportDAO.executePrcNCR(ReportDAO.java:548)
at org.eei.survey.data.ReportDAO.getNCR(ReportDAO.java:59)
at jsp_servlet._reliability._charts.__barncr._jspService(__barncr.java:235)
任何帮助，将不胜感激。
更新：这是错误的完整堆栈跟踪：
04-08 14:56:19 WARN [ExecuteThread: '14' for queue: 'default'] org.apache.shale.faces.ShaleViewHandler: No ViewController for viewId /reliability/support/reportgen.faces found under name reliability$support$reportgen
04-08 14:56:19 DEBUG [ExecuteThread: '14' for queue: 'default'] org.eei.survey.data.ReportDAO: java.lang.IllegalArgumentException: No DataSource specified
04-08 14:56:19 ERROR [ExecuteThread: '14' for queue: 'default'] error.jsp: Error page displayed to user due to unhandled exception
java.lang.NullPointerException
at jsp_servlet._reliability._support.__reportgen._jspService(__reportgen.java:156)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1006)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:315)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:322)
at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:130)
at org.apache.shale.faces.ShaleViewHandler.renderView(ShaleViewHandler.java:142)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1006)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:28)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at org.apache.shale.faces.InvokeCommand.execute(InvokeCommand.java:40)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:166)
at org.apache.shale.faces.ShaleApplicationFilter.doFilter(ShaleApplicationFilter.java:218)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at org.eei.survey.web.UserFilter.doFilterInternal(UserFilter.java:30)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6724)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3764)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2644)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)