How to use uniapp to develop ID card recognition function

How to use uniapp to develop ID card recognition function

Introduction:
ID card recognition is a very important function in the field of mobile applications. It can automatically parse the ID card photo after the user takes it. information on the ID card. This article will introduce how to use uniapp to develop ID card recognition function, and attach code examples to help developers quickly implement this function.

1. Preparation:
Before using uniapp to develop the ID card recognition function, we need to complete the following preparations:

1. ID card recognition API: We can choose some ID card recognition APIs from third parties, such as Baidu AI, Tencent AI, etc., these APIs provide functional interfaces for ID card recognition.
2. uniapp development environment: We need to install the uniapp development environment and ensure that the uniapp project has been created.

2. Create the uniapp project:
After the preparation work is completed, we can start to create the uniapp project. Open the uniapp development environment, choose to create a new project, fill in the relevant information as prompted, and finally complete the project creation.

3. Import the ID card recognition plug-in:

1. In the uniapp project, we can implement the ID card recognition function through the plug-in. First, we need to install the plugin. In the project directory, find the plug-in folder and copy the ID card recognition plug-in into it.
2. After the installation is complete, find the manifest.json file in the plug-in directory, open and add the following configuration:

"plugins": {
  "idcard-recognition": {
    "version": "*",
    "provider": "thirdparty"
  }
}

3. If you need to use an ID card In the recognition function page, introduce the plug-in:

import idcardRecognition from '@/js_sdk/idcard-recognition'

4. Take ID card photos:
Create a button on the page. When the button is clicked, the camera will be opened and the user can take ID card photos. . The code is as follows:

<template>
  <view>
    <button @click="takePhoto">拍摄照片</button>
  </view>
</template>

<script>
  export default {
    methods: {
      takePhoto() {
        uni.chooseImage({
          count: 1,
          sizeType: ['compressed'],
          sourceType: ['camera'],
          success: (res) => {
            const path = res.tempFilePaths[0]
            this.recognitionIdCard(path)
          }
        })
      },

      recognitionIdCard(path) {
        // 调用插件进行身份证识别
        idcardRecognition.recognition({
          path: path,
          success: (res) => {
            console.log(res)
          },
          fail: (err) => {
            console.error(err)
          }
        })
      }
    }
  }
</script>

In the above code, the takePhoto method is used to handle the event of taking a photo. Open the camera through the uni.chooseImage method. After the user takes a photo, the temporary file path of the photo will be returned, and then the recognitionIdCard method is called for ID card recognition.

5. Analyze ID card information:
After the ID card is successfully recognized, we can get the information on the ID card. Usually, the ID card information is parsed into a JSON object, and we can perform corresponding operations. The code is as follows:

idcardRecognition.recognition({
  ...
  success: (res) => {
    const idcardInfo = JSON.parse(res.result)
    console.log('姓名：' + idcardInfo.name)
    console.log('性别：' + idcardInfo.gender)
    console.log('民族：' + idcardInfo.nationality)
    console.log('出生日期：' + idcardInfo.birth)
    console.log('地址：' + idcardInfo.address)
    console.log('身份证号码：' + idcardInfo.id)
  },
  ...
})

In the above code, we convert the recognition result into a JSON object through the JSON.parse method, and then we can perform the corresponding operations as needed.

6. Summary:
Through the introduction of this article, we have learned how to use uniapp to develop the ID card recognition function. First, the preparation work was completed, then the uniapp project was created and the ID card recognition plug-in was imported. Next, we wrote the function of taking ID card photos and the code to parse the ID card information. I hope the above content will be helpful to everyone in using uniapp to develop ID card recognition functions.

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