@RequestParam注解的使用

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

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