@RequestParam注解的使用

自SpringMVC4.2之后,RequestParam内部有4个参数:
1、String name;
2、String value;
3、boolean required;
4、String defaultValue;


源码中name的别名是value,value的别名是name,

所以说name和value两个属性基本是等价的,都是获取从前台传入的参数


  1. RequestParam来映射请求参数
  2. required表示是否必须,默认为true
  3. defaultValue请求参数的默认值

  1. @RequestMapping(value = "/testRequestParam")
  2. public String testRequestParam(@RequestParam(value="username")String un,@RequestParam(value = "age",required = false,defaultValue = "0") int age){
  3. System.out.println("testRequestParam,username:"+un+",age,"+age);
  4. return "success";
  5. }




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posted @ 2018-12-08 17:12  学不死的程序员  阅读(7983)  评论(0编辑  收藏  举报