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vue axios实现登录源码

2026-01-21 12:23:28VUE

以下是一个基于Vue.js和Axios实现登录功能的完整示例代码，包含前端和后端交互逻辑：

前端部分（Vue组件）

安装Axios依赖：

npm install axios

登录组件（Login.vue）：

<template>
  <div class="login-container">
    <form @submit.prevent="handleSubmit">
      <input v-model="form.username" type="text" placeholder="用户名">
      <input v-model="form.password" type="password" placeholder="密码">
      <button type="submit">登录</button>
    </form>
    <p v-if="error" class="error">{{ error }}</p>
  </div>
</template>

<script>
import axios from 'axios';

export default {
  data() {
    return {
      form: {
        username: '',
        password: ''
      },
      error: ''
    }
  },
  methods: {
    async handleSubmit() {
      try {
        const response = await axios.post('/api/login', this.form);
        localStorage.setItem('token', response.data.token);
        this.$router.push('/dashboard');
      } catch (err) {
        this.error = err.response?.data?.message || '登录失败';
      }
    }
  }
}
</script>

<style scoped>
.login-container {
  max-width: 300px;
  margin: 0 auto;
}
.error {
  color: red;
}
</style>

后端API示例（Node.js Express）

const express = require('express');
const bodyParser = require('body-parser');
const jwt = require('jsonwebtoken');

const app = express();
app.use(bodyParser.json());

const users = [
  { id: 1, username: 'admin', password: 'admin123' }
];

app.post('/api/login', (req, res) => {
  const { username, password } = req.body;
  const user = users.find(u => u.username === username && u.password === password);

  if (user) {
    const token = jwt.sign({ userId: user.id }, 'your-secret-key', { expiresIn: '1h' });
    return res.json({ token });
  }

  res.status(401).json({ message: '无效的用户名或密码' });
});

app.listen(3000, () => {
  console.log('服务器运行在 http://localhost:3000');
});

Axios全局配置

在main.js中添加：

import axios from 'axios';

axios.defaults.baseURL = 'http://localhost:3000';
axios.interceptors.request.use(config => {
  const token = localStorage.getItem('token');
  if (token) {
    config.headers.Authorization = `Bearer ${token}`;
  }
  return config;
});

Vue.prototype.$http = axios;

路由守卫

在router/index.js中添加：

router.beforeEach((to, from, next) => {
  if (to.matched.some(record => record.meta.requiresAuth)) {
    const token = localStorage.getItem('token');
    if (!token) {
      next({ path: '/login' });
    } else {
      next();
    }
  } else {
    next();
  }
});

这个实现包含以下关键点：