在vue中获取token,并将token写进header的方法

 //根据api接口获取token var url = this.HOST + "/session"; this.$axios.post(url, { username: this.loginForm.username, password: this.loginForm.pass }).then(res => { // console.log(res.data); this.$message.success('登录成功'); let data = res.data; //根据store中set_token方法将token保存至localStorage/sessionStorage中，data["Authentication-Token"]，获取token的value值 this.$store.commit('set_token', data["Authentication-Token"]); if (store.state.token) { this.$router.push('/') console.log(store.state.token) } else { this.$router.replace('/login'); } }).catch(error => { // this.$message.error(error.status) this.loading = false this.loginBtn = "登录" this.$message.error('账号或密码错误'); // console.log(error) }) 

 import Vue from 'vue' import Vuex from 'vuex' Vue.use(Vuex) export default new Vuex.Store({ state:{ token:'' }, mutations:{ set_token(state, token) { state.token = token sessionStorage.token = token }, del_token(state) { state.token = '' sessionStorage.removeItem('token') } } }) 

 // 页面刷新时，重新赋值token if (sessionStorage.getItem('token')) { store.commit('set_token', sessionStorage.getItem('token')) } const router = new Router({ mode: "history", routes }); router.beforeEach((to, from, next) => { if (to.matched.some(r => r.meta.requireAuth)) {   //这里的requireAuth为路由中定义的 meta:{requireAuth:true}，意思为：该路由添加该字段，表示进入该路由需要登陆的 if (store.state.token) { next(); } else { next({ path: '/login', query: {redirect: to.fullPath} }) } } else { next(); } }) 

 Axios.defaults.headers.common['Authentication-Token'] = store.state.token;

 // 添加请求拦截器 Axios.interceptors.request.use(config => { // 在发送请求之前做些什么 //判断是否存在token，如果存在将每个页面header都添加token if(store.state.token){ config.headers.common['Authentication-Token']=store.state.token } return config; }, error => { // 对请求错误做些什么 return Promise.reject(error); }); // http response 拦截器 Axios.interceptors.response.use( response => { return response; }, error => { if (error.response) { switch (error.response.status) { case 401: this.$store.commit('del_token'); router.replace({ path: '/login', query: {redirect: router.currentRoute.fullPath}//登录成功后跳入浏览的当前页面 }) } } return Promise.reject(error.response.data) });