需要准備的東西：Vue+axios+Vuex+Vue-router
1.在login.vue中通過發送http請求獲取token
前端精品教程：百度網盤下載
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//根據api接口獲取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(
'登錄成功'
);
let data = res.data;
//根據store中set_token方法將token保存至localStorage/sessionStorage中，data["Authentication-Token"]，獲取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 =
"登錄"
this
.$message.error(
'賬號或密碼錯誤'
);
// console.log(error)
})
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2.在store.js中對token狀態進行監管
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import Vue from
'vue'
import Vuex from
'vuex'
Vue.use(Vuex)
export
default
new
Vuex.Store({
state:{
token:
''
},
mutations:{
set_token(state, token) {
state.token = token
sessionStorage.token = token
},
del_token(state) {
state.token =
''
sessionStorage.removeItem(
'token'
)
}
}
})
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3.在router/index.js中
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// 頁面刷新時，重新賦值token
if
(sessionStorage.getItem(
'token'
)) {
store.commit(
'set_token'
, sessionStorage.getItem(
'token'
))
}
const router =
new
Router({
mode:
"history"
,
routes
});
router.beforeEach((to, from, next) => {
if
(to.matched.some(r => r.meta.requireAuth)) {
//這里的requireAuth為路由中定義的 meta:{requireAuth:true}，意思為：該路由添加該字段，表示進入該路由需要登陸的
if
(store.state.token) {
next();
}
else
{
next({
path:
'/login'
,
query: {redirect: to.fullPath}
})
}
}
else
{
next();
}
})
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4.在main.js中定義全局默認配置：
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Axios.defaults.headers.common[
'Authentication-Token'
] = store.state.token;
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5.在src/main.js添加攔截器
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// 添加請求攔截器
Axios.interceptors.request.use(config => {
// 在發送請求之前做些什么
//判斷是否存在token，如果存在將每個頁面header都添加token
if
(store.state.token){
config.headers.common[
'Authentication-Token'
]=store.state.token
}
return
config;
}, error => {
// 對請求錯誤做些什么
return
Promise.reject(error);
});
// http response 攔截器
Axios.interceptors.response.use(
response => {
return
response;
},
error => {
if
(error.response) {
switch
(error.response.status) {
case
401:
this
.$store.commit(
'del_token'
);
router.replace({
path:
'/login'
,
query: {redirect: router.currentRoute.fullPath}
//登錄成功后跳入瀏覽的當前頁面
})
}
}
return
Promise.reject(error.response.data)
});
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