按照一个视频课程敲的代码,但是执行完这块代码后,list.jsp始终跳转不过去,刚开始一直显示空白页,但是找不到报错的地方,后来调出一个报错提示:
Cannot forward after response has been committed
request.setCharacterEncoding("UTF-8");
try {
//1.取到了要查询的关键数据:姓名,性别
String sname = request.getParameter("sname");
String sgender = request.getParameter("sgender");
//2.找service去查询
StudentService service = new StudentServiceImpl();
List<Student> list = service.searchStudent(sname, sgender);
System.out.println("list的大小是:"+list.size());
for(Student student : list){
System.out.println(student);
//3.存数据
request.setAttribute("list", list);
//4.跳转
request.getRequestDispatcher("list.jsp").forward(request, response);
解决办法是:
在***.forward(request, response);***的第二行什么代码都不要写,并且加一个return:
request.getRequestDispatcher(“list.jsp”).forward(request, response);
return;