How uniapp encapsulates the request path

With the popularity of mobile Internet, the development of mobile applications has become increasingly popular. By encapsulating the request path, some operations that interact with server data can be more conveniently performed. This article will introduce how to encapsulate the request path in uniapp.

1. Understand the request path

In mobile application development, we usually need to interact with the server for data and obtain some dynamic data, and the acquisition of these data requires communication using the HTTP protocol. An HTTP request consists of a URL address and request parameters. URL addresses can be accessed through GET, POST, etc., and request parameters are usually passed in the form of key-value pairs.

When we develop mobile applications, we usually set the server address to a constant to facilitate unified management and maintenance:

const baseUrl = 'http://www.example.com/api';

Then, every time we send a request, we need Manually combine the request address and request parameters into a complete URL:

const url = baseUrl + '/user/login?username=' + username + '&password=' + password;
uni.request({
  url: url,
  success: (res) => {
    console.log(res.data);
  }
})

Although this way of writing can implement the request, when the server address changes, we need to manually find the request address in all codes and modify it, which is very trouble.

2. Encapsulating the request path

Therefore, we can process the server address and request parameters separately by encapsulating the request path, which facilitates our unified management and maintenance.

In uniapp, we can perform state management through vuex and encapsulate the request path in vuex for global access:

// store/index.js
const state = {
  baseUrl: 'http://www.example.com/api'
}

const getters = {
  baseUrl: state => state.baseUrl
}

export default new Vuex.Store({
  state,
  getters
})

Then, we can obtain it through vuex in the code Request path:

const url = store.getters.baseUrl + '/user/login';
uni.request({
  url: url,
  data: {
    username: username,
    password: password
  },
  success: (res) => {
    console.log(res.data);
  }
})

When the server address changes, we only need to modify the baseUrl attribute in vuex.

3. Conclusion

By encapsulating the request path, we can perform request operations more conveniently, and when the server address changes, it can be modified more easily. At the same time, we can also use vuex to uniformly manage request paths to facilitate code maintenance.

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