jsp 中的500空指针异常怎么改？
typeExceptionreportmessagedescriptionTheserverencounteredaninternalerror()thatprevent...
type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception java.lang.NullPointerException
com.soft.admin.adminDAO.findAdministrator(adminDAO.java:151)
com.soft.admin.AdminAction.doPost(AdminAction.java:95)
com.soft.admin.AdminAction.doGet(AdminAction.java:40)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.12 logs. 展开
com.soft.admin.adminDAO.findAdministrator(adminDAO.java:151)
com.soft.admin.AdminAction.doPost(AdminAction.java:95)
com.soft.admin.AdminAction.doGet(AdminAction.java:40)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.12 logs. 展开
1个回答
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com.soft.admin.adminDAO.findAdministrator(adminDAO.java:151)在这个adminDAO类中的findAdministrator方法中没有取到值，好好看看是什么原因导致的！
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