HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.servlet.ServletException
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:535)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:433)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
root cause java.lang.NullPointerException
com.neusoft.struts.MyLoginAction.execute(MyLoginAction.java:45)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.27 logs.

解决方案 »

  1.   

    com.neusoft.struts.MyLoginAction.execute(MyLoginAction.java:45)学会看抛出的异常咯,
      

  2.   

    对不起,其实我知道大概是这里出了问题,但是不知道具体在哪里,因为在debug时,需要的两个变量都得到了参数,所以才到这寻求一些帮助。后来我知道了问题所在,然后我提出的这个问题太不具体了,单凭我上面的问题,是很难找到相对具体一点的解决方法,所非常抱歉,同时也非常感谢您的指教!