angularjs - POST请求有效(状态200)，但满足失败条件

Question

这是我的AngularJS代码发出的请求:

$scope.add = function(){    // Function used to add a value to list. Value has name, type, and priority.
    if($scope.thing){
        $scope.items.push(
            {name: $scope.thing,
             type: $scope.worktypeSelection,
             priority: $scope.prioritySelection,
             completed: false,
             comments: '',
             creator: $scope.username,
             assignedTo: $scope.assign
        });

        var itemToJson = $scope.items[$scope.items.length - 1];

        $http.post('http://localhost:8080/server/todoList/addItem', {itemToJson})
        .success(function(response) {alert("success");})
        .error(function(response) {alert("fail");});

        $scope.thing = '';
    }
    else{
        alert("Empty task is not allowed!");
    }
};

还有我的Grails Controller :

package server

import grails.converters.JSON

class TodoListController {

    def addItem() {
        def newItem = new Item(request.JSON)
        newItem.save(flush: true)
        render newItem as JSON
    }

    def index(){
        render Item.list() as JSON
    }
}

及其域类:

package server

class Item {

    String name
    String type
    String priority
    boolean completed = false
    String comments
    String creator
    String assignedTo

    static constraints = {
        name nullable: false
        priority nullable: true
        type nullable: true
        comments nullable: true
        creator nullable: false
        assignedTo nullable: false
    }
}

当我启动该帖子时，我从网络上收到200(据说这意味着该帖子还可以)，但是随后我得到了失败结果(警告弹出并显示“失败”)。如果请求实际上到达了服务器，我不明白问题是什么

Answer 1

项目ToJson已经是json对象，
不要放在“{}”之间
像这样:

$http.post('http://localhost:8080/server/todoList/addItem', itemToJson)