需要引入库:vue-resource

 <script src="https://cdn.jsdelivr.net/vue.resource/1.0.3/vue-resource.min.js"></script>

1.获取普通文本数据 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>测试 vue-resource</title>
    <script src="http://unpkg.com/vue/dist/vue.js"></script>
    <script src="https://cdn.jsdelivr.net/vue.resource/1.0.3/vue-resource.min.js"></script>
    <script type="text/javascript">
        window.onload = function(){
            var vm = new Vue({
                el:'#box',
                data:{
                    msg:'Hello World!',
                },
                methods:{
                    get:function(){
                        //发送get请求
                        this.$http.get('test.txt').then(function(res){
                            alert(res.body);
                        },function(){
                            console.log('请求失败处理');
                        });
                       
                    }
                }
            });
        }
    </script>
</head>
<body>
<div id="box">
    <input type="button" @click="get()" value="按钮">
</div>

</body>
</html>

2.get发送数据给后端 

this.$http.get('http://127.0.0.1:8080/VueStudy/test/getTest.action',{a:1,b:2}).then(function(res){
                            alert(res.body);
                        },function(res){
                            console.log(res.status);
                        });

3.post发送数据到后台

 //post方法
                       /* 如果Web服务器无法处理编码为application/json的请求,你可以启用emulateJSON选项。
                          启用该选项后,请求会以application/x-www-form-urlencoded作为MIME type,就像普通的HTML表单一样。*/
this.$http.post('http://127.0.0.1:8080/VueStudy/test/getTest.action',{a:1,b:2},{emulateJSON:true}).then(function(res){
                            alert(res.body);
                        },function(res){
                            console.log(res.status);
                        });

4.jsonp跨域

this.$http.jsonp('https://sug.so.360.cn/suggest',{word:'a'},{jsonp:'callback'}).then(function(res){
                            console.log(res.data);
                        },function(res){
                            console.log(res.status);
                        });

5.非简写

this.$http({
                            url:'http://127.0.0.1:8080/VueStudy/test/getTest.action',
                            method:'GET',
                           /!* emulateJSON:true,*!/
                            data:{'a':'gaoguo','b':'ceshiceshi','c':'123456','isTop':0},
                            /!*headers: {"X-Requested-With": "XMLHttpRequest"},*!/
                            emulateJSON: true
                        }).then(function(data){
                            //赋值给alllist数组,
                            //this.$set('alllist',data.data.knowledgeList)
                        })

 

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