在tomcat下进行程序时报错及解决方法
1.启动tomcat时报如下错误:[*]java.io.FileNotFoundException: e:\edu\source\bcedu_back\WebRoot\WEB-INF\classes\BackEduport.properties (系统找不到指定的文件。)
[*] at java.io.FileInputStream.open(Native Method)
[*] at java.io.FileInputStream.<init>(FileInputStream.java:106)
[*] at java.io.FileInputStream.<init>(FileInputStream.java:66)
[*] at tools.DBTool.QueryHandler.<clinit>(QueryHandler.java:995)
[*] at auth.AuthPersonalmenuMgr.Search_Personalpermenu(AuthPersonalmenuMgr.java:31)
[*] at org.apache.jsp.left_005fmenu_jsp._jspService(left_005fmenu_jsp.java:78)
[*] at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
[*] at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
[*] at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
[*] at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
[*] at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
[*] at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
[*] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
[*] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
[*] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
[*] at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
[*] at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
[*] at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
[*] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
[*] at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
[*] at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
[*] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
[*] at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
[*] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
[*] at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
[*] at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
[*] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
[*] at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
[*] at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
[*] at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
[*] at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
[*] at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
[*] at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
[*] at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
[*] at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
[*] at java.lang.Thread.run(Thread.java:595)
[*]java.lang.NullPointerException
[*] at java.io.FileOutputStream.<init>(FileOutputStream.java:172)
[*] at java.io.FileOutputStream.<init>(FileOutputStream.java:70)
[*] at tools.DBTool.DbConnectionBroker.<init>(DbConnectionBroker.java:51)
[*] at tools.DBTool.QueryHandler.<clinit>(QueryHandler.java:1013)
[*] at auth.AuthPersonalmenuMgr.Search_Personalpermenu(AuthPersonalmenuMgr.java:31)
[*] at org.apache.jsp.left_005fmenu_jsp._jspService(left_005fmenu_jsp.java:78)
[*] at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
[*] at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
[*] at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
[*] at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
[*] at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
[*] at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
[*] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
[*] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
[*] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
[*] at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
[*] at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
[*] at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
[*] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
[*] at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
[*] at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
[*] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
[*] at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
[*] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
[*] at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
[*] at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
[*] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
[*] at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
[*] at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
[*] at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
[*] at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
[*] at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
[*] at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
[*] at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
[*] at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
[*] at java.lang.Thread.run(Thread.java:595)
解决方法:由于tomcat启动时占用了该文件,只要将任意一个文件进行修改后保存就可以了.
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