不考慮再添加一個封裝類，
后臺代碼就只能這樣，唯一的改變可以更改入?yún)⒌奈恢茫€有入?yún)⑸系淖⒔?，和方法上的注解，前臺應該怎么寫？

@ResponseBody

@RequestMapping(value = "add", consumes = "application/json; charset=utf-8")
public String add(@RequestBody String content, @RequestBody List<Tag> param) {

前臺：
$.ajax({

    type:"post",
    url: 'add',
    contentType:"application/json; charset=utf-8",
    dataType:"json",
    data:JSON.stringify({
            content:"nihaoahaha",
            param:[{id:1,name:"hello"},{id:2,name:"hello"}]
    }),
    success:function(data){
        console.log(data);
    }
})

如果我只接收一個list是正常的：
后臺代碼：
@ResponseBody

@RequestMapping(value = "add", consumes = "application/json; charset=utf-8")
public String add(@RequestBody List<Tag> param) {
    System.out.println("param:" + param);
    return "成功";
}

前臺代碼：
$.ajax({

    type:"post",
    url: 'add',
    contentType:"application/json; charset=utf-8",
    dataType:"json",
    data:JSON.stringify([{id:1,name:"hello"},{id:2,name:"hello"}]),
    success:function(data){
        console.log(data);
    }
})

正常