Vue在MVC中的进行前后端的交互

Vue在MVC中的进行前后端的交互

 


 

 

Preface:

由于最近在研究前端相关的技术,作为前端非常优秀的框架Vue,个人在学习的过程中遇到一些问题,网上相关资料有限,所以在这这里总结一下个人使用Vue的一点经验,以便后来者借鉴!

官方文档:Vue.js

使用Vue在ASP.NET MVC中进行前后端交互
在阅读下面的文章之前你需要先了解一下Vue官方推荐的前后端交互的插件:

1.resource(官方在2.0版本之后取消了对此插件的维护)

2.axios

注:这里使用的都是异步的插件,因为这样才会在你的项目中具有使用意义,当然你也可以用其它的js库,如jQuery、Fetch等等...

Instance:

Controller

 1 using Demo.Models;
 2 using System;
 3 using System.Collections.Generic;
 4 using System.Linq;
 5 using System.Web;
 6 using System.Web.Mvc;
 7 
 8 namespace Demo.Controllers
 9 {
10     //[RoutePrefix("api/Goods")]
11     public class GoodsController : Controller
12     {
13         List<GoodsEntity> goosdList = new List<GoodsEntity>
14         {
15             new GoodsEntity(){ ID=001,Name="",Type=1,Price=3},
16             new GoodsEntity(){ ID=002,Name="牛奶",Type=1,Price=10},
17             new GoodsEntity(){ ID=003,Name="面包",Type=2,Price=15}
18         };
19 
20         // GET: Goods
21         public ActionResult Index()
22         {
23             return View();
24         }
25 
26         public ActionResult Check()
27         {
28             return View();
29         }
30 
31         [HttpGet]
32         public JsonResult GetGoodsType()
33         {
34             List<int> goodsType = new List<int>();
35             foreach (var item in goosdList)
36             {
37                 if (!goodsType.Contains(item.Type))
38                 {
39                     goodsType.Add(item.Type);
40                 }
41             }
42             return Json(goodsType, JsonRequestBehavior.AllowGet);
43         }
44 
45         [HttpGet]
46         public JsonResult GetAllGoods()
47         {
48             return Json(goosdList, JsonRequestBehavior.AllowGet);
49         }
50 
51         [HttpPost]
52         public JsonResult GetGoods(int id)
53         {
54             var entity = goosdList.Where(g => g.ID == id).FirstOrDefault();
55             if (entity != null)
56             {
57                 return Json(new ReturnJsonInfo(500, "success!", entity));
58             }
59             return Json(new ReturnJsonInfo(400, "error!", null));
60         }
61 
62         [HttpPost]
63         public JsonResult UpdateGoods(GoodsEntity entity)
64         {
65             if (entity!=null)
66             {
67                 var goodsEntiy = goosdList.FirstOrDefault(g => g.ID == entity.ID);
68                 if (goodsEntiy!=null)
69                 {
70                     goodsEntiy = entity;
71                     return Json(new ReturnJsonInfo(500, "success!", goosdList));
72                 }
73                 goosdList.Add(entity);
74                 return Json(new ReturnJsonInfo(500, "success!", goosdList));
75             }
76             return Json(new ReturnJsonInfo(400, "error!",null));
77         }
78 
79         [HttpPost]
80         public JsonResult DelectGoods(int id)
81         {
82             var entity = goosdList.Where(g => g.ID == id).FirstOrDefault();
83             if (entity != null)
84             {
85                 goosdList.Remove(entity);
86                 return Json(new ReturnJsonInfo(500, "success!", goosdList));
87             }
88             return Json(new ReturnJsonInfo(400, "error!",null));
89         }
90 
91     }
92 }
View Code

在上面的控制器中加载了一些示例数据,并且都是以json的格式返回前端,这样前端就可以直接使用这些数据。

注:控制器返回至前端的json中,上面使用 “ReturnJsonInfo” 对象序列化进行返回, “ReturnJsonInfo” 代码如下。

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 
 6 namespace Demo.Models
 7 {
 8     public class ReturnJsonInfo
 9     {
10         public int Code { get; set; }
11         public string Message { get; set; }
12         public object Entity { get; set; }
13         public ReturnJsonInfo(int code, string message,object obj)
14         {
15             this.Code = code;
16             this.Message = message;
17             this.Entity = obj;
18         }
19     }
20 }
View Code

 

View

1.前端采用resource插件

 

  1 @{
  2     ViewBag.Title = "Goods IndexPage";
  3 }
  4                  <script type="text/javascript" src="~/Resources/Scripts/vue.js"></script>
  5                  <script type="text/javascript" src="~/Resources/Scripts/vue-resource.js"></script>
  6 <h2>Index</h2>
  7                <div id="demo">
  8                       <table>
  9                           <tr>
 10                               <td><label>编号:</label></td>
 11                               <td><input type="text" v-model="newGoods.id" /></td>
 12 
 13                               <td><label>名称:</label></td>
 14                               <td><input type="text" v-model="newGoods.name" /></td>
 15 
 16                               <td><label>类型:</label></td>
 17                               <td><input type="text" v-model="newGoods.type" /></td>
 18 
 19                               <td><label>售价:</label></td>
 20                               <td><input type="text" v-model="newGoods.price" /></td>
 21 
 22                               <td><input type="submit" value="查询" v-on:click="GetGoods(newGoods.id)" /></td>
 23                           </tr>
 24                       </table>
 25                               <table v-show="goodsList.length">
 26                                   <tr>
 27                                       <td>编号</td>
 28                                       <td>名称</td>
 29                                       <td>类型</td>
 30                                       <td>售价</td>
 31                                   </tr>
 32                                   <tr v-for="item in goodsList">
 33                                       <td>{{item.ID}}</td>
 34                                       <td>{{item.Name}}</td>
 35                                       <td>{{item.Type}}</td>
 36                                       <td>{{item.Price}}</td>
 37                                   </tr>
 38                               </table>
 39                </div> 
 40 <script type="text/javascript">
 41     var view = new Vue(
 42         {
 43             el: "#demo",
 44             data: {
 45                 goodsList: [],
 46                 newGoods: {id:'',name:'',type:'',price:''}
 47             },              
 48             created: function () {
 49                 this.InIt();
 50             },
 51             methods: {
 52                 InIt: function () {
 53                     //初始化
 54                     this.GetAllGoods();
 55                 },
 56                 GetAllGoods: function () {
 57                     var _self = this;               
 58                     _self.$http.get("../Goods/GetAllGoods").then(
 59                         // Lambda写法
 60                         (response) => {
 61                             //successCallback
 62                             for (var i = 0; i < response.data.length; i++) {
 63                                 _self.goodsList.push(response.data[i]);                                   
 64                             }                                     
 65                         } ,
 66                         (response) => {
 67                                    //errorCallback   
 68                         }
 69                     );
 70                 },
 71                 GetGoods: function (_id) {
 72                     var _self = this;
 73                     _self.goodsList = [];
 74                     if (_id.length > 0) {
 75                         _self.$http.post("../Goods/GetGoods", { id: _id }).then(
 76                             // 传统写法
 77                             function (response) {
 78                                 //successCallback                                    
 79                                 if (response.data.Code == 500) {
 80                                     _self.goodsList.push(response.data.Entity);
 81                                 }
 82                                 else {
 83                                     alert(response.data.Message);
 84                                 }
 85                             },
 86                             function (response) {
 87                                 //errorCallback
 88                             }
 89                         )
 90                             .catch(function (response) {
 91                                 console.log(response);
 92                             });
 93                     }
 94                     else {
 95                         _self.GetAllGoods();
 96                     }
 97             }
 98             }
 99         }
100     );              
101 </script>
View Code

 

2.前端采用axios插件

  1 @{
  2     Layout = null;
  3 }
  4 
  5 <!DOCTYPE html>
  6 
  7 <html>
  8 <head>
  9     <meta name="viewport" content="width=device-width" />
 10     <title>Check</title>
 11     <script type="text/javascript" src="~/Resources/Scripts/vue.js"></script>
 12     <script type="text/javascript" src="~/Resources/Scripts/axios.min.js"></script>
 13 </head>
 14 <body>
 15     <div id="demo">
 16         <div>
 17             <table>
 18                 <tr>
 19                     <td><label>编号:</label></td>
 20                     <td><input type="text" v-model="newGoods.id" /></td>
 21 
 22                     <td><label>名称:</label></td>
 23                     <td><input type="text" v-model="newGoods.name" /></td>
 24 
 25                     <td><label>类型:</label></td>
 26                     <td>
 27                         <select v-model="newGoods.type">
 28                             <option value="">---ALL---</option>
 29                             <option v-for="type in goodsType" v-bind:value="type">{{type}}</option>
 30                         </select>
 31                     </td>
 32 
 33                     <td><label>售价:</label></td>
 34                     <td><input type="text" v-model="newGoods.price" /></td>
 35 
 36                     <td>
 37                         <input type="submit" value="查询" v-on:click="GetGoods(newGoods.id)" />
 38                         <input type="submit" value="更新" v-on:click="UpdateGoods(newGoods.id,newGoods.name,newGoods.type,newGoods.price)" />
 39                         <input type="submit" value="删除" v-on:click="DelectGoods(newGoods.id)" />
 40                     </td>
 41                 </tr>
 42             </table>
 43         </div>
 44         <div>
 45             <table v-show="goodsList.length">
 46                 <tr>
 47                     <td>行号</td>
 48                     <td>编号</td>
 49                     <td>名称</td>
 50                     <td>类型</td>
 51                     <td>售价</td>
 52                 </tr>
 53                 <tr v-for="(item,index) in goodsList">
 54                     <td>{{index+1}}</td>
 55                     <td>{{item.ID}}</td>
 56                     <td>{{item.Name}}</td>
 57                     <td>{{item.Type}}</td>
 58                     <td>{{item.Price}}</td>
 59                 </tr>
 60             </table>
 61         </div>
 62     </div>
 63 
 64     
 65     <script type="text/javascript">
 66         var vm = new Vue({
 67             el: "#demo",
 68             data: {
 69                 goodsType:[],
 70                 goodsList: [],
 71                 newGoods: { id: '', name: '', type: '', price: '' }
 72             },
 73             mounted() {
 74                 this.GetGoodsType();
 75                 this.GetAllGoods();
 76             },
 77             methods:
 78             {
 79                 GetGoodsType: function () {
 80                     axios.get("../Goods/GetGoodsType").then(
 81                         (response) => {
 82                             this.goodsType = [];
 83                             for (var i = 0; i < response.data.length; i++) {
 84                                 this.goodsType.push(response.data[i]);
 85                             }
 86                         },
 87                         (response) => {
 88                             alert(response.status);
 89                         }
 90                     )
 91                         .catch(function (response) {
 92                             console.log(response);
 93                         });
 94                 } ,
 95                 GetAllGoods: function () {
 96                     axios.get('../Goods/GetAllGoods').then(
 97                         function (response) {                               
 98                             vm.goodsList = [];  
 99                             for (var i = 0; i < response.data.length; i++) {      
100                                 vm.goodsList.push(response.data[i]);
101                             }
102                             //vm.goodsList.splice(response.data.length);
103                         },
104                         function (response) {
105                             alert(response.status);
106                         }
107                     )
108                         .catch(
109                         function (error) {
110                             alert(error);
111                         }
112                         )
113                 },
114                 GetGoods: function (_id) {
115                     if (_id.length > 0) {
116                         axios.post("../Goods/GetGoods", { id: _id }).then(                                   
117                             (response) => {        
118                                 this.goodsList = [];
119                                 if (response.data.Code == 500) {
120                                     this.goodsList.push(response.data.Entity);   
121                                 }
122                                 else {
123                                     alert(response.data.Message);
124                                 }
125                                  
126                             },
127                             (response) => {       
128                                 alert(response.status);
129                             }
130                         )
131                             .catch(function (response) {
132                                 console.log(response);
133                             });
134                     }
135                     else {
136                         this.GetAllGoods();
137                     }
138                 },
139                 UpdateGoods: function (_id,_name,_type,_price) {
140                     axios.post("../Goods/UpdateGoods", { entity: { ID: _id, Name: _name, Type: _type, Price: _price } }).then(                              
141                         (response) => {
142                             this.goodsList = [];
143                             if (response.data.Code == 500) { 
144                                 for (var i = 0; i < response.data.Entity.length; i++) {
145                                     this.goodsList.push(response.data.Entity[i]);
146                                 }
147                             }
148                             else {
149                                 alert(response.data.Message);
150                             }
151                         },
152                         (response) => {
153                             alert(response.status);
154                         }
155                     )
156                         .catch(function (response) {
157                             console.log(response);
158                         });
159                 },
160                 DelectGoods: function (_id) {
161                     axios.post("../Goods/DelectGoods", { id: _id }).then(
162                         (response) => {
163                             this.goodsList = [];
164                             if (response.data.Code == 500) {
165                                 for (var i = 0; i < response.data.Entity.length; i++) {
166                                     this.goodsList.push(response.data.Entity[i]);
167                                 }
168                             }
169                             else {
170                                 alert(response.data.Message);
171                             }
172 
173                         },
174                         (response) => {
175                             alert(response.status);
176                         }
177                     )
178                         .catch(function (response) {
179                             console.log(response);
180                         });
181                 } 
182             },
183 
184         });
185     </script>
186 </body>
187 </html>
View Code

在上面的视图中,前端都是用数组进行填充的,值得注意的是vue在数组监听这一块做得并不是特别友好。但也提供了一些非常友好的api。

如果你也采用上述方式更新view,请参阅vue官方提供的关于操作数组方法

 

Perorations:

在上面的Demo中,采用的是ASP.NET MVC模板,写完这个Demo之后,感觉如果采用ASP.NET API模板的话就更加具有参考意义,因为如果在项目中使用Vue基本上就可以使前端和后端分离。

 

以上是个人在写这个Demo之后的一些总结,当然后续也会不定期进行更新。如有描述不当,请@作者修改,谢谢!

 

posted @ 2018-05-21 16:40 走样 阅读(...) 评论(...) 编辑 收藏