问一下各位大佬，这个86行的空指针异常是怎么出现的？这个页面跳转语句怎么
String phonename = request.getParameter("phonename"); String version = request.getParameter("version"); String price = request.getParameter("price"); String begin ; String end ; //第一次传值时为空串 if(phonename==null){ phonename = ""; } if(version==null){ version = ""; } /*if(price==null){ price = "全部时间"; } if("全部时间".equals(price)){ begin = "0"; end = "0"; }else{ begin = request.getParameter("begin"); end = request.getParameter("end"); }*/ /*int begin2 = Integer.parseInt(begin); int end2 = Integer.parseInt(end);*/ PhoneService phoneService = new PhoneServiceImpl(); //List list = phoneService.getPhoneList(phonename,version,begin2,end2); List phonelist = phoneService.getPhoneList(phonename,version); // String begin3 = begin2+"";// String end3 = end2+""; request.setAttribute("phoneList", phonelist); request.setAttribute("phoneName", phonename); request.setAttribute("version", version); //request.setAttribute("begin", begin3); //request.setAttribute("end", end3); //request.setAttribute("price", price); 此行为86行 request.getRequestDispatcher("phoneinfo_query.jsp").forward(request, response); |
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代码不完整，没法准确定位问题。
按你所说的问题，86行出现空指针。可能是request.getRequestDispatcher("phoneinfo_query.jsp").forward(request,response);
"phoneinfo_query.jsp" 这个参数路径写错导致的。
重点是根据底下的root cause 报错显示，你这空指针也可能是
web容器内此phoneinfo_query.jsp 页面上224行上出现了空指针，建议你可以去编译路径下的classpath下查看phoneinfo_query.jsp 224行代码 |
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