java.lang.NullPointerException
at java.net.URLDecoder.decode(URLDecoder.java:119)
at java.net.URLDecoder.decode(URLDecoder.java:83)
at org.apache.jsp.login_jsp._jspService(login_jsp.java:676)
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:374)
at org.apache.jasper.servlet.JspServlet.serviceJspFile
(JspServlet.java:337)
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:286)
at org.apache.coyote.http11.Http11Processor.process
(Http11Processor.java:844)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process
(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run
(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
请问这是个什么错误 怎么解决呢
解决问题了 可以加分
login.jsp 有这个页面吗？可能是这个里面提交到action的时候有null值存在
空指针世丛异常，应该是URLDecoder.decode(a, "utf-8"中侍);
语句搜培樱中的a是null
正确的话加我为满意答案吧