[求助]JSP+TOMCAT+MYSQL弄的网站转到另一页时出现的异常

Error page error

An error occurred in the bean. Error Message is: null
Stack Trace is :

java.lang.NullPointerException
    at com.intacpurun.wsms.comm.Util.getCityList(Util.java:43)
    at org.apache.jsp.serviceintroduce_jsp._jspService(serviceintroduce_jsp.java:111)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
    at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:852)
    at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:584)
    at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1508)
    at java.lang.Thread.run(Thread.java:619)




我在学校弄是可以运行的,回家来就不行了呢?
帮忙看下什么意思?

搜索更多相关主题的帖子: TOMCAT JSP MYSQL java apache

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com.intacpurun.wsms.comm.Util.getCityList //报得很明显．．它为空..
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这里是得到数据库里的东西是数据库没连好?
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检查下相应的字段名称是否写错了
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好像不是字段的事啊？

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