【木棉花】：基于OpenHarmony的AI图像识别应用开发（ETS） 原创 精华

  "reqPermissions": [
      {
        "name": "ohos.permission.INTERNET"
      }
    ]
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import resourceManager from '@ohos.resourceManager';
import http from '@ohos.net.http';
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  @State access_token: string = 'Hello World'
  @State Base64Str: string = 'Hello World'
  @State result_description: string = 'description'
  @State result_keyword: string = 'keyword'
  @State result_root: string = 'root'
  @State result_image: string = 'image'
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GetAccessToken() {
    let httpRequest = http.createHttp();
    httpRequest.request(
//自行替换AK和SK
      "https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id=【百度云应用的AK】&client_secret=【百度云应用的SK】",
      {
        method: http.RequestMethod.POST,
        connectTimeout: 60000,
        readTimeout: 60000,
      }, (err, data) => {
      if (!err) {
        let obj = JSON.parse(data.result.toString());
        this.access_token=obj.access_token
        console.info('Result1:' + data.result);
        console.info('Result1_token:' + this.access_token);
      } else {
        console.info('Result1_error:' + JSON.stringify(err));
        httpRequest.destroy();
      }
    })
  }
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//base64编码
GetBase64(){
    let that = this
    resourceManager.getResourceManager((error, mgr) => {
      if (error != null) {
        console.log("ResourceManager error is " + error)
      } else {
        mgr.getMediaBase64($r('app.media.lianou').id, (error, value) => {
          if (error != null) {
            console.log("base64_error is " + error)
          } else {
            console.info('base64_result:' + value)
            that.Base64Str = that.getCaption(value)
            console.info('base64Str:' + this.Base64Str)
          }
        });
      }
    });
  }
//去掉编码头
  getCaption(obj) {
    var index = obj.lastIndexOf("\,");
    obj = obj.substring(index + 1, obj.length);
    return obj;
  }
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  AI_request() {
    let httpRequest = http.createHttp();
    httpRequest.request(
      "https://aip.baidubce.com/rest/2.0/image-classify/v2/advanced_general?access_token="+ this.access_token,
      {
        method: http.RequestMethod.POST,
        header: {
          'Content-Type': 'application/x-www-form-urlencoded'
        },
        extraData: {
          'image': this.Base64Str,
          'baike_num': 1
        },
        connectTimeout: 60000,
        readTimeout: 60000,
      }, (err, data) => {
      if (!err) {
        let obj = JSON.parse(data.result.toString());
        this.result_description = obj.result[0].baike_info.description;
        this.result_keyword = obj.result[0].keyword;
        this.result_image = obj.result[0].baike_info.image_url;
        this.result_root = obj.result[0].root;
   
        console.info('Result_description:' + this.result_description)
        console.info('Result_keyword:' + this.result_keyword)
        console.info('Result_root:' + this.result_root)
        console.info('Result_image:' + this.result_image)
      } else {
        console.info('Result2_error:' + JSON.stringify(err));
        httpRequest.destroy();
      }
    })
  }
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 build() {
    Column({ space: 10 }) {
      Button('AI识别')
        .onClick(() => {
          this.GetBase64()
          this.GetAccessToken()
          setTimeout(()=>{
            this.AI_request()
          },1400)
        })
      Image(this.result_image)
        .width(150)
        .height(150)

      Row({ space: 20 }) {
        Text(this.result_keyword)
          .fontSize(20)
          .width(150)
          .height(35)
          .textAlign(TextAlign.Start)
        .margin(15)
        Text(this.result_root)
          .fontSize(20)
          .textAlign(TextAlign.Start)
          .width(150)
          .height(35)
          .margin(15)
      }.width('100%')
      .height(35)

      Text(this.result_description)
        .fontSize(20)
        .textAlign(TextAlign.Start)
        .width('90%')
        .height(250)
    }
    .width('100%')
    .height('100%')

  }
}
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