How to call the api interface in uniapp

With the development of mobile Internet, more and more companies choose to develop cross-platform applications, and UniApp has become a very popular solution. Unlike other frameworks, UniApp only needs to write one code to generate iOS, Android and other applications for multiple platforms at the same time. At the same time, UniApp’s API is relatively simple and easy to use, making it convenient for developers to carry out development work. In this article, I will mainly introduce how to use UniApp to call the API interface.

1. API Introduction

API (Application Programming Interface) refers to the application program interface, which refers to a set of predefined functions, protocols and tools. In layman's terms, an API is a set of program interfaces through which developers can interact with other programs, obtain required data or perform specified operations. The application scenarios of API are very wide, such as: third-party login, SMS verification, payment, logistics, etc.

In UniApp, we can implement corresponding functions by calling the API interface. UniApp has some commonly used APIs built in, such as routing, network requests, page layout, Storage storage, etc. In addition to the built-in API, plug-ins can also be used to extend the API to meet our more needs.

2. Network request API

In developing applications, it is often necessary to call the background interface to obtain data. UniApp has a built-in network request API to facilitate us to make interface calls. There are two main interfaces: uni.request and uni.uploadFile.

1. uni.request

uni.request The interface is mainly used to implement network requests. The request methods supported by this interface are: GET, POST, PUT, DELETE, HEAD, OPTIONS, TRACE, and CONNECT. Among them, GET and POST are the two most commonly used request methods.

uni.request has the following parameter options:

uni.request({
  url: 'https://api.example.com/login',
  method: 'POST',
  header: {
    'content-type': 'application/json'
  },
  data: {
    username: 'example',
    password: 'example123'
  },
  success: res => {
    console.log(res.data)
  },
  fail: error => {
    console.log(error)
  }
})

2. uni.uploadFile

uni.uploadFile The interface is mainly used to upload files . This interface has the following parameter options:

uni.uploadFile({
  url: 'https://api.example.com/upload',
  filePath: '/path/to/file',
  name: 'file',
  header: {
    'content-type': 'multipart/form-data'
  },
  formData: {
    'name': 'example'
  },
  success: res => {
    console.log(res.data)
  },
  fail: error => {
    console.log(error)
  }
})

In applications, routing is a very important concept. UniApp provides routing-related API interfaces. Here we introduce two APIs:

and

. uni.navigateTo

1. uni.navigateTo
interface is a method used to jump to a new page. Through this interface, we can jump to a new page and pass parameters. This interface has the following parameter options:

uni.navigateTo({
  url: '/pages/detail/detail?id=1',
  success: res => {
    console.log(res)
  },
  fail: error => {
    console.log(error)
  }
})

uni.redirectTo({
  url: '/pages/index/index',
  success: res => {
    console.log(res)
  },
  fail: error => {
    console.log(error)
  }
})

// 存储数据
uni.setStorage({
  key: 'username',
  data: 'example',
  success: function () {
    console.log('数据存储成功')
  }
})
// 获取数据
uni.getStorage({
  key: 'username',
  success: function (res) {
    console.log(res.data)
  }
})
// 删除数据
uni.removeStorage({
  key: 'username',
  success: function () {
    console.log('数据删除成功')
  }
})

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