uni-app集成微信小程序OCR扫描

"plugins": {
    "ocr-plugin": {
        "version": "3.1.2",
        "provider": "wx4418e3e031e551be"
    }
}

<template>
  <view class="uni-container">
    <uni-nav-bar :fixed="true" color="#ffffff"
                 background-color="#04a0eb"
                 :status-bar="true"
                 title="OCR识别"
                  />
    <button class="button" @click="clickCertificate">扫描合格证</button>
    <view>扫描结果：{{certificate}}</view>
    <button class="button" @click="clickVin">扫描车辆</button>
    <view>扫描结果：{{vin}}</view>
  </view>

</template>
<script>


export default {
  components: {
  },
  data() {
    return {
      certificate: '',
      vin: ''
    }
  },
  created() {
  },
  //每次进页面都会执行的方法
  onShow(){
    //工作状态，运维人员才显示
  },
  methods: {
    clickCertificate() {
      let that = this
      // 选择图片
      wx.chooseImage({
        count: 1,
        success: async function(res) {
          try {
            let invokeRes = await wx.serviceMarket.invokeService({
              service: 'wx79ac3de8be320b71',
              api: 'OcrAllInOne',
              data: {
                // 用 CDN 方法标记要上传并转换成 HTTP URL 的文件
                img_url: new wx.serviceMarket.CDN({
                  type: 'filePath',
                  filePath: res.tempFilePaths[0],
                }),
                data_type: 3,
                ocr_type: 8
              },
            })
            console.log('invokeService success', invokeRes)
            let tmp = invokeRes.data.ocr_comm_res.items
            for (let i = 0; i < tmp.length;i++) {
              let no = tmp[i].text
              if (no.substring(0,3) === 'LSG') {
                that.certificate = no
              }
            }
          } catch (err) {
            console.error('invokeService fail', err)
            wx.showModal({
              title: 'fail',
              content: err,
            })
          }
        },
        fail: function(res) {},
        complete: function(res) {},
      })
    },
    clickVin() {
      let that = this
      // 选择图片
      wx.chooseImage({
        count: 1,
        success: async function(res) {
          try {
            let invokeRes = await wx.serviceMarket.invokeService({
              service: 'wx79ac3de8be320b71',
              api: 'OcrAllInOne',
              data: {
                // 用 CDN 方法标记要上传并转换成 HTTP URL 的文件
                img_url: new wx.serviceMarket.CDN({
                  type: 'filePath',
                  filePath: res.tempFilePaths[0],
                }),
                data_type: 3,
                ocr_type: 8
              },
            })
            console.log('invokeService success', invokeRes)
            for (let i = 0; i < invokeRes.data.ocr_comm_res.items.length;i++) {
              let no = invokeRes.data.ocr_comm_res.items[i].text
              if (no.substring(0,3) == 'LSG') {
                that.vin = no
              }
            }
          } catch (err) {
            console.error('invokeService fail', err)
            wx.showModal({
              title: 'fail',
              content: err,
            })
          }
        },
        fail: function(res) {},
        complete: function(res) {},
      })
    },
  }
}
</script>

<style>
button {
  background-color: #007aff;
  color: #ffffff;
}
</style>