SpringMVC的参数获取方式

1.通过request.getParmater();

String id = request.getParamter("id");

String username = request.getParamter("username");

2.@RequestMapping("/hanlder/{id}") // http://localhost:8080/upload/hanlder/2.action 会把2注入给id

public String hander(@PathVariable("id") Integer id) {

system.out.println(id);

}

3.@RequestMapping("/handler") // http://localhost:8080/upload/handler.action?id=3 会把3注入给id

public String handler2(Integer id){

}

4. @RequerstMapping("/handler3")

public String handler3(User user){

}