springmvc与ajax

1.前端

<button id="btn" onclick="jsonFuc()">json测试</button>
function jsonFuc(){     
      $.ajax({
        url: 'springmvc/testJsonList',
        type: 'POST',
            dataType:'json',
            async:true,
            data:{username:'123',age:'12'},
            success:function(data) {
                console.log(data)                
              }
    });
}

后台

@ResponseBody
    @RequestMapping("/testJsonList")
    public List<User> testJsonList(@RequestParam String username,@RequestParam Integer age){
        System.out.println(username+"   "+age);
        List<User> userlist = new ArrayList<User>();
        User user =new User();
        user.setId(1);
        user.setAge(12);
        user.setEmail("[email protected]");
        user.setUsername("张扬");
        user.setPassword("123456");
        user.setSex("男");
        
        User user1 =new User();
        user1.setId(2);
        user1.setAge(12);
        user1.setEmail("[email protected]");
        user1.setUsername("张扬");
        user1.setPassword("123456");
        user1.setSex("男");
        
        userlist.add(user);
        userlist.add(user1);
        return userlist;        
    }

 结果显示

页面页面

控制台打印123  12