前端页面传来数组,后台用对象集合list接收数据的写法

//保存页面显示应用
$("#save").click(function(){
 var data = [{"applicationtypeid":"65","applicationsystemid":"30"},{"applicationtypeid":"65","applicationsystemid":"31"}];
    $.ajax({
        url: "${ctx}/applicationuser/save",
        type: "POST",
        contentType : 'application/json;charset=utf-8', //设置请求头信息
        dataType:"json",
        data: JSON.stringify(data),    //将Json对象序列化成Json字符串，JSON.stringify()原生态方法
        success: function(result){
            console.log("保存页面显示应用",result);
        },
        error: function(res){
            layer.msg("操作失败!",{icon: 5,time:2000});
        }
    });
});

/**
 * 保存页面显示应用
 */
@RequestMapping("/save")
@ResponseBody
//@RequiresPermissions("applicationuser:save")
public JSONObject saveApplicationUser(@RequestBody List<ApplicationUserEntity> applicationUserList){
   return applicationUserService.saveApplicationUser(applicationUserList);
}

第二种写法

/**
 * 保存页面显示应用
 */
@RequestMapping("/save")
@ResponseBody
public JSONObject saveApplicationUser(@RequestBody String str ,HttpServletRequest request){
   List<ApplicationUserEntity> applicationUserList = JSONArray.parseArray(str, ApplicationUserEntity.class);
   return applicationUserService.saveApplicationUser(applicationUserList,request);
}