实在是没有碰到过

[waiaou]

用tomcat和apache作服务器，但是过不了几天系统就会出错,重起服务之后又好了，
网页上显示的是java.lang.NullPointException.
我查看了tomcat的日志文件，是如下错误：
java.io.IOException: Connection reset by peer
at java.net.SocketOutputStream.socketWrite(Native Method)
at java.net.SocketOutputStream.write(SocketOutputStream.java:96)
at org.apache.catalina.connector.ResponseBase.flushBuffer(ResponseBase.java:679)
at org.apache.catalina.connector.HttpResponseBase.flushBuffer(HttpResponseBase.java:757)
at org.apache.catalina.connector.ResponseBase.write(ResponseBase.java:652)
at org.apache.catalina.connector.ResponseStream.write(ResponseStream.java:312)
at org.apache.catalina.connector.http.HttpResponseStream.write(HttpResponseStream.java:189)
at org.apache.catalina.servlets.DefaultServlet.copyRange(DefaultServlet.java:1903)
at org.apache.catalina.servlets.DefaultServlet.copy(DefaultServlet.java:1652)
at org.apache.catalina.servlets.DefaultServlet.serveResource(DefaultServlet.java:1197)
at org.apache.catalina.servlets.DefaultServlet.doGet(DefaultServlet.java:519)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:475)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2343)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1012)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1107)
at java.lang.Thread.run(Thread.java:484)
请指教!谢谢！

[waiaou]

顶

[changbird]

晕 好大一片代码！ 学习in 关注中...........

是不是连接池有问题？ 好像是什么内存溢出之类的错误。

[takecare]

在什么样的情景下出错的？报错也需要专业精神的。

[凋零的老树]

是你JSP代码的问题,空指针错误

[blueicefire]

有可能是因为你没有用new初始化你的对象的原因，也就是在使用你所要使用的对象之前没有初始化。。。呵呵~~~~`不对不要撇砖呀~~~~~~~~~~

[waiaou]

jsp代码有问题吗？我每次重起服务之后就好了，我现在也搞不清楚到底是什么原因导致了错误，出现问题之后所有网页都报空指针错误，我贴的是tomcat的log，不好意思，有点多，主要是太着急了，就全贴上来了