如何读取本地JSON文件

{ 
  "region": "CN", 
  "configuration_version": "3.0" 
}
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import resourceManager from '@ohos.resourceManager'; 
resourceManager.getRawFileContent("province.json", (error, data) => { 
  if (error != null) { 
    console.log("error is " + error); 
    return 
  } 
  //do something 
}
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this.json = String.fromCharCode.apply(null,data)
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@Entry 
@Component 
struct JsonPage { 
  @State message: string = '读取文件' 
  @State json: string = '' 
  
  build() { 
    Row() { 
      Column() { 
        Button(this.message) 
          .fontSize(30) 
          .fontWeight(FontWeight.Bold) 
          .onClick(()=>{ 
            getContext(this).resourceManager.getRawFileContent("province.json",(err,data)=>{ 
              try { 
                this.json = String.fromCharCode.apply(null,data) 
  
              }catch (e){ 
                console.info('Cktest ' + JSON.stringify(e)) 
              } 
            }) 
          }) 
        TextArea({ text: this.json }) 
          .fontSize(10) 
          .height("90%") 
      } 
      .width('100%') 
    } 
    .height('100%') 
  } 
}
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