UniApp realizes the development and online process analysis of Alipay applet

UniApp is a cross-platform development tool based on the Vue.js framework, which can quickly achieve the effect of coding once and publishing on multiple terminals. As developers, we can use UniApp to develop Alipay mini programs. At the same time, this article will provide a detailed analysis of the development and launch process of Alipay mini programs and provide corresponding code examples for reference.

1. Construction of UniApp and Alipay mini program development environment

1. Make sure the Node.js environment is installed. If not, you can go to the Node.js official website to download and install the latest version.

2. Execute the following command in the command line to install the global Vue-cli scaffolding tool:

npm install -g @vue/cli

3. Create the UniApp project, open the command line window, enter the project directory, and execute the following command:

vue create -p dcloudio/uni-preset-vue my-project

4. Follow the prompts and select the default configuration when creating the project. After the project is created, execute the following command to enter the project directory:

cd my-project

5. Execute the following command to install the UniApp plug-in dependencies :

npm install

6. Execute the following command to run the UniApp development environment:

npm run dev:mp-alipay

7. In the Alipay Mini Program Developer Tool, select "Add Mini Program", find and select the project directory dist/dev/mp-alipay folder, the project was successfully imported.

2. Analysis of UniApp Alipay applet development process

1. Directory structure
The directory structure of UniApp is similar to the Vue.js project. Under the src directory, there is a pages folder for Store mini program pages, the components folder is used to store components, and the utils folder is used to store tool classes.

2. Write pages
Create Alipay applet pages in the pages folder, such as home.vue, detail.vue, etc., and write corresponding HTML, CSS, and JavaScript codes in the pages to implement page layout. and logic.

3. Write components
Create small program components in the components folder, such as header.vue, footer.vue, etc. You can improve the maintainability and reusability of the code by reusing components.

4. Interface request
UniApp can encapsulate the interface request in the api.js file under the utils folder, obtain data by initiating network requests, and perform corresponding data processing.

5. Alipay Mini Program API
UniApp supports the use of the Alipay Mini Program native API. You can use the uni.getProvider() method to determine whether the current environment is an Alipay Mini Program and call the corresponding Alipay Mini Program API to complete. Operations such as payment and obtaining user information.

Sample code:

// 判断当前环境是否为支付宝小程序
if (uni.getProvider().name === 'alipay') {
  uni.showToast({
    title: '当前环境为支付宝小程序',
    icon: 'none'
  })
}

6. Alipay applet payment
The implementation of UniApp Alipay applet payment is consistent with the development of Alipay applet, and the Alipay applet API can be called to complete the payment operation.

Sample code:

my.tradePay({
  tradeNO: '20190522102743000000000xxx', // 支付宝交易号
  success: (res) => {
    uni.showToast({
      title: '支付成功'
    })
  },
  fail: (res) => {
    uni.showToast({
      title: '支付失败',
      icon: 'none'
    })
  }
})

3. Analysis of the Alipay Mini Program online process

1. Log in to the Alipay Mini Program Developer Tool, select the Mini Program project to be launched, and click " Upload code" button.

2. Fill in the version number, function description and other relevant information, and then click the "Upload" button.

3. After the upload is successful, enter the mini program management background, select "Application Management", find the mini program version you just uploaded, and click the "Submit for Review" button.

4. On the review page, follow the prompts to fill in the relevant information, such as option configuration, page jump, etc., and then click "Submit".

5. Wait for the Alipay mini program to be reviewed and approved. After passing the review, the mini program will be officially launched.

Summary:

This article introduces in detail the development and launch process of Alipay applet implemented by UniApp, and provides corresponding code examples. With the cross-platform features of UniApp, developers can easily and quickly achieve once-coding and multi-end publishing effects, greatly improving development efficiency. I hope this article can be helpful to developers who need to develop Alipay applets.

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