博客前端项目搭建(2) 页面路由编写+登录页面编写

编写页面以及路由

我们在views文件夹下定义几个页面：

BlogDetail.vue（博客详情页）
BlogEdit.vue（编辑博客）
Blogs.vue（博客列表）
Login.vue（登录页面）
配置路由:

import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../views/Login.vue'
import Blogs from '../views/Blogs.vue'
import BlogEdit from '../views/BlogEdit.vue'
import BlogDetail from '../views/BlogDetail.vue'
Vue.use(VueRouter)

const routes = [
  {
    path: '/',
    name: 'Index',
    redirect: {name: "Blogs"}
  },
  {
    path: '/blogs',
    name: 'Blogs',
    component: Blogs
  },
  {
    path: '/login',
    name: 'Login',
    component: Login
  },
  {
    path: '/blog/add',
    name: 'BlogAdd',
    component: BlogEdit,
    meta: {
      requireAuth: true
    }
  },
  {
    path: '/blog/:blogId',
    name: 'BlogDetail',
    component: BlogDetail
  },
  {
    path: '/blog/:blogId/edit',
    name: 'BlogEdit',
    component: BlogEdit,
    meta: {
      requireAuth: true
    }
  }
]

const router = new VueRouter({
  routes
})

export default router

登录页面编写

Login.vue

<template>
  <div>

    <el-container>
      <el-header>
        <img class="mlogo" src="https://www.markerhub.com/dist/images/logo/markerhub-logo.png" alt="">
      </el-header>
      <el-main>
        <el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="100px" class="demo-ruleForm">
          <el-form-item label="用户名" prop="username">
            <el-input v-model="ruleForm.username"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input type="password" v-model="ruleForm.password"></el-input>
          </el-form-item>

          <el-form-item>
            <el-button type="primary" @click="submitForm('ruleForm')">立即创建</el-button>
            <el-button @click="resetForm('ruleForm')">重置</el-button>
          </el-form-item>
        </el-form>

      </el-main>
    </el-container>

  </div>
</template>

<script>
export default {
  name: "Login",
  data() {
    return {
      ruleForm: {
        username: 'markerhub',
        password: '111111'
      },
      rules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 15, message: '长度在 3 到 15 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请选择密码', trigger: 'change' }
        ]
      }
    };
  },
  methods: {
    submitForm(formName) {
      this.$refs[formName].validate((valid) => {
        if (valid) {
          const _this = this
          this.$axios.post('/login', this.ruleForm).then(res => {

            console.log(res.data)
            const jwt = res.headers['authorization']
            const userInfo = res.data.data

            // 把数据共享出去
            _this.$store.commit("SET_TOKEN", jwt)
            _this.$store.commit("SET_USERINFO", userInfo)

            // 获取
            console.log(_this.$store.getters.getUser)

            _this.$router.push("/blogs")
          })

        } else {
          console.log('error submit!!');
          return false;
        }
      });
    },
    resetForm(formName) {
      this.$refs[formName].resetFields();
    }
  }
}
</script>

<style scoped>
.el-header, .el-footer {
  background-color: #B3C0D1;
  color: #333;
  text-align: center;
  line-height: 60px;
}

.el-aside {
  background-color: #D3DCE6;
  color: #333;
  text-align: center;
  line-height: 200px;
}

.el-main {
  /*background-color: #E9EEF3;*/
  color: #333;
  text-align: center;
  line-height: 160px;
}

body > .el-container {
  margin-bottom: 40px;
}

.el-container:nth-child(5) .el-aside,
.el-container:nth-child(6) .el-aside {
  line-height: 260px;
}

.el-container:nth-child(7) .el-aside {
  line-height: 320px;
}

.mlogo {
  height: 60%;
  margin-top: 10px;
}

.demo-ruleForm {
  max-width: 500px;
  margin: 0 auto;
}

</style>

验证什么的就用ele给的 重点在于登录后我们做的事情

this.$axios.post('/login', this.ruleForm).then(res => {

            console.log(res.data)
            const jwt = res.headers['authorization']
            const userInfo = res.data.data

            // 把数据共享出去
            _this.$store.commit("SET_TOKEN", jwt)
            _this.$store.commit("SET_USERINFO", userInfo)

            // 获取
            console.log(_this.$store.getters.getUser)

            _this.$router.push("/blogs")
          })

从返回的结果请求头中获取到token的信息，然后使用store提交token和用户信息的状态。完成操作之后，我们调整到了/blogs路由，即博客列表页面。

token的状态同步

所以在store/index.js中，代码是这样的：

import Vue from 'vue'
import Vuex from 'vuex'
Vue.use(Vuex)
export default new Vuex.Store({
  state: {
    token: '',
    userInfo: JSON.parse(sessionStorage.getItem("userInfo"))
  },
  mutations: {
    SET_TOKEN: (state, token) => {
      state.token = token
      localStorage.setItem("token", token)
    },
    SET_USERINFO: (state, userInfo) => {
      state.userInfo = userInfo
      sessionStorage.setItem("userInfo", JSON.stringify(userInfo))
    },
    REMOVE_INFO: (state) => {
      localStorage.setItem("token", '')
      sessionStorage.setItem("userInfo", JSON.stringify(''))
      state.userInfo = {}
    }
  },
  getters: {
    getUser: state => {
      return state.userInfo
    }
  },
  actions: {},
  modules: {}
})

存储token，我们用的是localStorage，存储用户信息，我们用的是sessionStorage。毕竟用户信息我们不需要长久保存，保存了token信息，我们随时都可以初始化用户信息。

axios拦截器

编写一个axios.js

import axios from 'axios'
import Element from 'element-ui'
import router from './router'
import store from './store'


axios.defaults.baseURL = "http://localhost:8081"

// 前置拦截
axios.interceptors.request.use(config => {
  return config
})

axios.interceptors.response.use(response => {
    let res = response.data;

    console.log("=================")
    console.log(res)
    console.log("=================")

    if (res.code === 200) {
      return response
    } else {

      Element.Message.error('错了哦，这是一条错误消息', {duration: 3 * 1000})

      return Promise.reject(response.data.msg)
    }
  },
  error => {
    console.log(error)
    if(error.response.data) {
      error.message = error.response.data.msg
    }

    if(error.response.status === 401) {
      store.commit("REMOVE_INFO")
      router.push("/login")
    }

    Element.Message.error(error.message, {duration: 3 * 1000})
    return Promise.reject(error)
  }
)

然后再main.js中导入axios.js

import './axios.js' // 请求拦截