@RequestParam 设置参数别名

-----------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
4. value为接收前台参数的参数名

------------示例------------------------------------------------------------------

@RequestMapping(value = "/testRequestParam")
 public String testRequestParam(@RequestParam(value="username")String name,
 @RequestParam(value = "age",required = false,defaultValue = "0") int age){
      System.out.println("username:"+un+",age,"+age);
       return "success";
}1.2.3.4.5.6.

http://localhost:8080/sirdifoa/test/para?username=张三&age=301.

结果为：

username:张三，age=30