[Angularjs]asp.net mvc+angularjs+web api單頁應用之CRUD操作

寫在前面

前篇文章整理了angularjs學習目錄，有園子里的朋友問我要這方面的demo，周末也沒什么事，就在之前的單頁應用的demo上面添加了增刪改查的操作。代碼比較簡單，這里只列舉比較重要的代碼片段。完整的代碼將在文章下面提供鏈接。

demo

數據來源通過webapi的方式提供。獲取對產品的查詢，分頁，增加商品，刪除，修改等操作。

webapi

    public class ProductController : ApiController
    {
        private List<Product> lstOrders = null;
        HttpResponseMessage response = null;
        public ProductController()
        {
            response = new HttpResponseMessage(HttpStatusCode.ResetContent);
            response.Headers.Add("Access-Control-Allow-Origin", "*"); //允許哪些url可以跨域請求到本域
            response.Headers.Add("Access-Control-Allow-Methods", "POST"); //允許的請求方法，一般是GET,POST,PUT,DELETE,OPTIONS
            response.Headers.Add("Access-Control-Allow-Headers", "x-requested-with,content-type"); //允許哪些請求頭可以跨域
            lstOrders = new List<Product>();
            //分頁用
            for (int i = 0; i < 100; i++)
            {
                lstOrders.Add(new Product { Dt = DateTime.Now, Id = i + 1, Name = "商品" + i.ToString(), Price = i + 20 });
            }

        }
        // GET: api/Order
        [HttpGet]
        [Route("api/product/lists")]
        public async Task<HttpResponseMessage> Get(string key, int page)
        {
            return await Task.Factory.StartNew(() =>
            {
                int pageSize = 10;

                var results = string.IsNullOrEmpty(key) ? lstOrders : lstOrders.Where(x => x.Name.Contains(key));
                //分頁
                var pagedResults = results.Skip((page - 1) * pageSize).Take(pageSize);
                response.StatusCode = HttpStatusCode.OK;
                response.Content = new StringContent(JsonConvert.SerializeObject(new { _code = 200, _data = pagedResults }));
                return response;
            });
        }
        [HttpPost]
        [Route("api/product/lists")]
        public async Task<HttpResponseMessage> Post([FromBody] Product order)
        {
            return await Task.Factory.StartNew(() =>
            {
                //模擬id
                order.Id = new Random().Next(101, 5000);
                lstOrders.Add(order);
                response.StatusCode = HttpStatusCode.OK;
                response.Content = new StringContent(JsonConvert.SerializeObject(new { _code = 200, _data = order }));
                return response;
            });
        }
        [HttpPut]
        [Route("api/product/lists")]
        // POST: api/Order
        public async Task<HttpResponseMessage> Put([FromBody] Product order)
        {
            return await Task.Factory.StartNew(() =>
            {
                var find = lstOrders.Find(o => o.Id == order.Id);
                if (find != null)
                {
                    find.Name = order.Name;
                    find.Price = order.Price;
                    find.Dt = order.Dt;
                    response.StatusCode = HttpStatusCode.OK;
                    response.Content = new StringContent(JsonConvert.SerializeObject(new { _code = 200, _data = find }));
                }


                return response;
            });
        }

        [HttpDelete]
        [Route("api/product/lists")]
        // DELETE: api/Order/5
        public async Task<HttpResponseMessage> Delete(int id)
        {
            return await Task.Factory.StartNew(() =>
            {
                Product findOder = lstOrders.Find(o => o.Id == id);
                lstOrders.Remove(findOder);
                response.StatusCode = HttpStatusCode.OK;
                response.Content = new StringContent(JsonConvert.SerializeObject(new { _code = 200, _data = lstOrders }));
                return response;
            });


        }
    }

angularjs app.js文件，注冊module，服務的注冊。

var app = angular.module('app_store', ['ngRoute', 'StoreService', ]);
//服務
var StoreService = angular.module('StoreService', []);
//請求服務
StoreService.factory('requestService', function ($http, $q) {
    var request = {
        method: 'POST',
        url: '',
        headers: { 'Content-Type': 'application/json' },
        data: {}
    };
    var postData = {
        lists: function (type, page) {
            request.method = "get";
            request.url = "../api/product/lists?key=" + type + "&page=" + page;
            return requestService($http, $q, request);
        },
        product_add: function (data) {
            request.method = "post";
            request.url = "../api/product/lists";
            request.data = data;
            return requestService($http, $q, request);
        },
        product_delete: function (id) {
            request.method = "DELETE";
            request.url = "../api/product/lists?id=" + id;
            return requestService($http, $q, request);
        },
        product_put: function (data) {
            request.method = "put";
            request.url = "../api/product/lists";
            request.data = data;
            return requestService($http, $q, request);
        }
    };
    return postData;
});
function requestService($http, $q, request) {
    var deferred = $q.defer(); // 聲明延后執行，表示要去監控后面的執行  
    $http(request).
    success(function (data, status, headers, config) {
        deferred.resolve(data);  // 聲明執行成功，即http請求數據成功，可以返回數據了  
    }).
    error(function (data, status, headers, config) {

        deferred.reject(data);   // 聲明執行失敗，即服務器返回錯誤  
    });
    return deferred.promise;   // 返回承諾，這里並不是最終數據，而是訪問最終數據的API  
};

app-route.js angularjs路由配置。

app.config(['$routeProvider', function ($routeProvider) {
    $routeProvider
    .when('/', { templateUrl: '../Scripts/Views/orders.html', controller: 'StoreController' })
    .when('/home', { templateUrl: '../Scripts/Views/orders.html' })
    .when('/add', { templateUrl: '../Scripts/Views/add-order.html', controller: 'OrderController' })
    .when('/edit/:id', { templateUrl: '../Scripts/Views/add-order.html', controller: 'OrderController' })
    .when('/error', { templateUrl: '../Scripts/Views/Error.html', controller: 'ErrorController' })
    .otherwise({ redirectTo: '/error' });
}]);

StoreController.js angularjs控制器

app.controller('StoreController', function ($scope, $http, $location, $routeParams, requestService) {
    console.log('StoreController');
    var page = 1;

    $scope.productKey = $scope.productKey ? $scope.productKey : '';
    $scope.products = [];
    $scope.query = function (key, page) {
        requestService.lists(key, page).then(function (data) {
            if (data._code === 200) {
                for (var i = 0; i < data._data.length; i++) {
                    $scope.products.push(data._data[i]);
                };
            };
        });
        console.log($scope.products);
    };
    $scope.query('', page)
    //查詢
    $scope.search = function () {
        $scope.products = [];
        $scope.query($scope.productKey, page)
    };
    $scope.add = function () {
        $location.url('/add');
    };
    $scope.loadMore = function () {
        page++;
        $scope.query($scope.productKey, page)
    };
    $scope.delte = function (id) {
        requestService.product_delete(id).then(function (data) {
            console.log(data);
            if (data._code == 200) {
                console.log('刪除成功');
                console.log(data._data);
            }
        });
    };
    $scope.edit = function (id) {
        $location.url('/edit/' + id);
    };
});

app.controller('OrderController', function ($scope, $http, $location, $routeParams, requestService) {
    console.log('OrderController');
    $scope.product = {
        Id: '',
        Name: '',
        Price: 0
    };
    var id = $routeParams.id;
    $scope.btn = id ? '確定' : '添加';

    $scope.add = function () {
        if (id) {
            $scope.product.Id = id;
            requestService.product_put($scope.product).then(function (data) {
                console.log(data);
                if (data._code == 200) {
                    console.log('修改成功');
                    console.log(data._data);
                }
            });
        } else {
            requestService.product_add($scope.product).then(function (data) {
                console.log(data);
                if (data._code == 200) {
                    console.log('添加成功');
                    console.log(data._data);
                }
            });
        };

    };
});

angularjs 視圖

<input type="text"
       name="name" class="form-control" placeholder="訂單名" ng-model="product.Name" required />

<input type="text"
       name="name" class="form-control" placeholder="單價" ng-model="product.Price" required />
<button class="btn btn-primary btn-block" ng-click="add()">{{btn}}</button>

<div class="address_serace">
    <input class="form-control" ng-change="search()" ng-model="productKey" placeholder="搜索商品">
</div>
<div class="address_div">
    <dl class="address_dl" ng-repeat="item in products">

        <dt class="address_user"><img class="address_user" src="/Content/Images/main.png" /></dt>
        <dd class="address_font">
            <p class="address_font_t">{{item.Name}}</p>
            <p>單價：￥{{item.Price}}</p>
            <a ng-click="delte(item.Id)">刪除</a>
            <a ng-click="edit(item.Id)">編輯</a>
        </dd>
    </dl>
   
</div>

    <button class="btn btn-primary btn-block " ng-click="loadMore()">加載更多...</button>
    <button class="btn btn-primary btn-block " ng-click="add()" >添加</button>

靜態資源引入存放在_Layout.cshtml文件中

<!DOCTYPE html>
<html ng-app="app_store">
<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>@ViewBag.Title - My ASP.NET Single Page Application</title>
    @* bootstrap *@
    <link href=@Url.Content("~/Content/bootstrap.min.css") rel="stylesheet" />
    @* 站點樣式 *@
    <link href=@Url.Content("~/Content/Site.css") rel="stylesheet" />
    @* angularjs *@
    <script src=@Url.Content("~/Scripts/App/angular.min.js")></script>
    <script src=@Url.Content("~/Scripts/App/angular-route.min.js")></script>
    @* app *@
    <script src=@Url.Content("~/Scripts/App/Apps.js")></script>
    @* 路由 *@
    <script src=@Url.Content("~/Scripts/Route/app-route.js")></script>
    @* 控制器 *@
    <script src=@Url.Content("~/Scripts/Controllers/StoreController.js")></script>
</head>
<body>
    @RenderBody()
</body>
</html>

列表頁面

做的比較簡單，能用就行。

添加商品和編輯商品使用同一個視圖文件和controller，通過參數id來區別是編輯還是添加商品

測試

刪除商品，根據id刪除商品，前端根據_code判斷是否刪除成功，刪除商品0，結果如下所示

加載更過，默認pageSize=10，加載第二頁，如下圖所示：

修改

總結

這里沒有采用數據庫，數據通過list模擬的，操作數據庫的那部分，有興趣的添加。

 demo源碼