vue http请求 vue-resource使用方法

1、安装vue-resource扩展： npm install vue-resource

2、在main.js中引入

import http from ‘vue-resource‘

3、使用方法

// 基于全局Vue对象使用http
Vue.http.get(‘/someUrl‘, [options]).then(successCallback, errorCallback);
Vue.http.post(‘/someUrl‘, [body], [options]).then(successCallback, errorCallback);

// 在一个Vue实例内使用$http
this.$http.get(‘/someUrl‘, [options]).then(successCallback, errorCallback);
this.$http.post(‘/someUrl‘, [body], [options]).then(successCallback, errorCallback);

4、使用拦截器显示和隐藏loading效果 （需要用到vuex扩展，vuex使用方法戳这里）

store.js 代码

import Vue from ‘vue‘
import Vuex from ‘vuex‘

Vue.use(Vuex)

// 定义初始值
const state = {
    isShowLoading: false
}

// 获取变量值
const getters = {
    isShowLoading: state => state.isShowLoading
}

//定义触发状态对象方法,传入state整个对象
//在页面中触发时使用this.$store.commit(‘mutationName‘) 触发Mutations方法改变state的值
const mutations = {
    setLoadingType(state, type) {
      state.isShowLoading = type;
    }
}

//异步执行方法，传入参数context，等同于整个store
//处理Mutations中已经写好的方法 其直接触发方式是 this.$store.dispatch(actionName)
const actions = {
    setLoadingType({commit}, type) {
        // 调用mutations 方法
        commit(‘setLoadingType‘, type)
    }
}

export default new Vuex.Store({
    state,
    mutations,
    actions,
    getters
})

main.js 代码

// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from ‘vue‘
import App from ‘./App‘
import router from ‘./router‘
import http from ‘vue-resource‘
import $ from ‘jquery‘
// 引入sotre.js
import store from ‘./components/common/store.js‘

Vue.config.productionTip = false

Vue.use(http)

Vue.http.interceptors.push((request, next) => {
	// 也可以再这里验证是否登录等操作
	// 显示loading
    store.dispatch(‘setLoadingType‘, true);
    next((response) => {
        // 隐藏loading
  	    store.dispatch(‘setLoadingType‘, false);
        return response
    });
});

/* eslint-disable no-new */
new Vue({
    store,
    el: ‘#app‘,
    router,
    render: h => h(App)
});

新建Loading.vue

<template id="loading-template" class="loading">
  <div class="loading-overlay">
    <div class="sk-three-bounce">
      <div class="sk-child sk-bounce1"></div>
      <div class="sk-child sk-bounce2"></div>
      <div class="sk-child sk-bounce3"></div>
    </div>
  </div>
</template>

<script>
export default {
  name: ‘loading‘,
  data () {
    return {
      msg: ‘this.test uve‘
    }
  }
}
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
h1, h2 {
  font-weight: normal;
}

ul {
  list-style-type: none;
  padding: 0;
}

li {
  display: inline-block;
  margin: 0 10px;
}

a {
  color: #42b983;
}
.loading-overlay {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  opacity: 1;
  background: rgba(0, 0, 0, 0.5);
  transition: all .6s;
}
</style>

App.vue 添加代码

<template>
    <div id="app">
        <div id="help">
            <loading v-show="isShowLoading"></loading>
        </div>
        <router-link to="/Login">跳转到详情页</router-link>
        <img src="./assets/logo.png">
        <router-view></router-view>
  </div>

</template>
<script>

import loading from ‘./components/Loading‘
import {mapGetters} from ‘vuex‘
export default {
    name: ‘app‘,
    components:{
        loading
    },
    data () {
        return {
        }
    },
    //computed 实时计算 Vue检测到数据发生变动时就会执行对相应数据有引用的函数。
    computed: {
        ...mapGetters([
            ‘isShowLoading‘
        ])
    }
}
</script>

<style>
#app {
  font-family: ‘Avenir‘, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>