vue-Resource（与后端数据交互）

单来说，vue-resource就像jQuery里的$.ajax，用来和后端交互数据的。可以放在created或者ready里面运行来获取或者更新数据...

vue-resource文档：https://github.com/vuejs/vue-resource/blob/master/docs/http.md

结合vue-router

data(){
        return{
            toplist:[],
            alllist:[]
        }
    },
    //vue-router
    route:{
        data({to}){
            //并发请求，利用 Promise 
            return Promise.all([
                //简写
                this.$http.get('http://192.168.30.235:9999/rest/knowledge/list',{'websiteId':2,'pageSize':5,'pageNo':1,'isTop':1}),
                //this.$http.get('http://192.168.30.235:9999/rest/knowledge/list',{'websiteId':2,'pageSize':20,'pageNo':1,'isTop':0})
                //不简写
                this.$http({
                    method:'GET',
                    url:'http://192.168.30.235:9999/rest/knowledge/list',
                    data:{'websiteId':2,'pageSize':20,'pageNo':1,'isTop':0},
                    headers: {"X-Requested-With": "XMLHttpRequest"},
                    emulateJSON: true
                    })
                ]).then(function(data){//es5写法
                     return{
                        toplist:data[0].data.knowledgeList,
                        alllist:data[1].data.knowledgeList
                    }
                //es6写法 .then()部分
                //.then(([toplist,alllist])=>({toplist,alllist})) 
            },function(error){
                //error
            })
        }
    }

在其他地方使用

ready(){
        var that=this;
        var websiteid = 2,
            pagesize = 20,
            pageno =1; 
        that.$http({
            method:'GET',
            url:'http://192.168.30.235:9999/rest/knowledge/list',
            data:{'websiteId':websiteid,'pageSize':pagesize,'pageNo':pageno,'isTop':0}
        }).then(function(data){
            //赋值给alllist数组,
            that.$set('alllist',data.data.knowledgeList)
        })
        //简写
        /*that.$http.get('http://192.168.30.235:9999/knowledge/list',{'websiteId':2,'pageSize':20,'pageNo':1,'isTop':0}).then(function(response){
            that.$set('alllist',response.data.knowledgeList)
        })*/
    }

若定义全部变量（在data（）中定义），使用$get()获取

data(){
        return{
            toplist:[],
            alllist:[],
            websiteid:2,
            pagesize:20,
            pageno:1
        }
    },
ready(){
        var that=this;
        that.$http({
            method:'GET',
            url:'http://192.168.30.235:9999/rest/knowledge/list',
            //使用定义的全局变量 用$get()获取
            data:{'websiteId':that.$get('websiteid'),'pageSize':that.$get('pagesize'),'pageNo':that.$get('pageno'),'isTop':0}
        }).then(function(data){
            //赋值给alllist数组,
            that.$set('alllist',data.data.knowledgeList)
        },function(error){
           //error
         })
    }

 post方式同理

将数据绑定到dom上

<ul>
    <li v-for="item in alllist" v-if="item.istop == false">
        <a v-link="{ name: 'getReceiptDetail',params:{knowledgeId: item.id }}">
            <div class='fl know-info'>
　　　　　　　　　　<!-- | limit 和 | timer是filter 在后续会说到-->
　　　　　　　　　　<!--字段含义: -->
                <p class='font-normal nomal-height'>{{item.title | limit 30 }}</p>                 
　　　　　　　　　 <p class='co9a9a9a' ><span style='margin-right: 1rem;'>{{item.viewTimes}}K</span><span>{{item.publishTime | timer }}</span></p> <!--viewTimes:有多少人查看 , publishTime:发布时间-->
            </div>
            <div class='fr know-img'>
                <img v-bind:src=item.coverImage />
            </div>
            <div class='clearfix'></div>
        </a>
   </li>
</ul>

在vue-validator中做post示例 , 将接口请求地址定义为全局详见VUEX