How to implement permission management and user identity authentication in uniapp

How to implement permission management and user identity authentication in uniapp

With the rapid development of the mobile Internet, more and more applications require user identity authentication and authority management. Implementing these functions in uniapp is not complicated. This article will introduce the specific implementation methods and provide code examples.

1. User identity authentication

User identity authentication means that the application verifies the legitimacy of the user's identity when the user logs in to ensure that the user can use the application safely and normally.

1. Create authentication page

First, we need to create a login page for users to enter their username and password. Jumping between pages can be achieved through the page jump function of uniapp.

2. Verify user identity

On the login page, after the user enters the username and password, the username and password can be sent to the backend server for verification through the network request function of uniapp . The backend server can use various authentication methods, such as token-based authentication, cookie-based authentication, etc. In this example, we use token-based authentication method to illustrate.

After verifying that the user's username and password are correct, the backend server will generate a token and return the token to the client. After receiving the token, the client can save the token locally for subsequent permission verification.

3. Use token for permission verification

When the user performs other operations, such as accessing a restricted page or performing a restricted operation, uniapp can be used The interceptor mechanism checks whether the token exists locally. If a token exists, the token can be sent to the backend server through the request header for permission verification. The backend server will determine whether the user has the authority to perform the operation based on the validity of the token.

2. Permission management

Permission management refers to restricting users’ access to and operations on certain functions and resources based on the user’s identity and role. For example, administrators can manage users, edit articles and other functions, while ordinary users can only browse articles, etc.

1. Define roles and permissions

First, we need to define the relationship between roles and permissions. You can use a database or configuration file to store the correspondence between roles and permissions. In uniapp, we can use the front-end framework vuex to store and manage user role and permission information.

2. Set routing guards

In uniapp, permission management can be achieved through routing guards. The route guard will verify before the user's route jumps to determine whether the user has permission to access the page.

In routing configuration, you can set the meta field of the route to store the permission information required by the route. Before the route jumps, you can obtain the user's permission information through vuex, and then determine whether the user has permission to access the page based on the meta field of the route. If you don't have permission, you can jump to other pages or give prompts.

Code sample:

1. Code sample to implement user authentication:

// Login page

<input type="text" v-model="username" placeholder="请输入用户名" />
<input type="password" v-model="password" placeholder="请输入密码" />
<button @click="login">登录</button>

<script><br>export default {<br> data() {</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>return { username: '', password: '' }</pre><div class="contentsignin">Copy after login</div></div> <p>},<br> methods: {</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>login() { uni.request({ url: 'http://example.com/login', method: 'POST', data: { username: this.username, password: this.password }, success(res) { // 登录成功，保存token uni.setStorageSync('token', res.data.token) } }) }</pre><div class="contentsignin">Copy after login</div></div><p>}<br>}<br></script>

2. Code example to implement permission management:

// Route configuration
const routes = [{

path: '/admin',
component: Admin,
meta: {
  requireAuth: true, // 需要登录才能访问
  roles: ['admin'] // 需要admin角色才能访问
}

},
{

path: '/user',
component: User,
meta: {
  requireAuth: true // 需要登录才能访问
}

}
]

/ / Route guard
router.beforeEach((to, from, next) => {
if (to.meta.requireAuth) {

// 需要登录才能访问
const token = uni.getStorageSync('token')
if (token) {
  // 有token，继续跳转
  const roles = store.state.roles
  if (to.meta.roles && to.meta.roles.length > 0 && roles.length > 0) {
    // 需要权限验证
    if (roles.some(role => to.meta.roles.includes(role))) {
      // 有权限，继续跳转
      next()
    } else {
      // 没有权限，跳转到其他页面
      next('/403')
    }
  } else {
    // 不需要权限验证
    next()
  }
} else {
  // 没有token，跳转到登录页面
  next('/login')
}

} else {

// 不需要登录，继续跳转
next()

}
})

Through the above code examples, we can realize the functions of permission management and user identity authentication in uniapp. Developers can make appropriate modifications and extensions according to their actual needs.

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