请求的数据放在数组里面，在外面打印不到

Question

 try {
  let DirBuckets=[]
  taskPhotoJsonPath.forEach((item: any) => {
    axios
      .get(`file://${item}`)
      .then((res: any) => {
        console.log(res);
        try {
          const { point, defect, packet } = res;
          if (packet) {
         //   resolve(packet[0])
            DirBuckets.push(packet[0])
          }
        } catch (e) {
          console.error(e);
          Modal.error({ content: "本地文件损坏,请重新同步服务器数据" });
        }
      })
      .catch(() => {
      });
  });
  console.log(DirBuckets, '当前读取的数据')
  setCurrentTask(currentTask);
}
 catch (error) {
  console.log(error);
}

Answer 1

请求时异步的，你同步打印的时候当然是个空数组。改成这样试试：

 try {
  let DirBuckets=[]
  Promise.all(taskPhotoJsonPath.map((item: any) => {
    return axios
      .get(`file://${item}`)
      .then((res: any) => {
        console.log(res);
        try {
          const { point, defect, packet } = res;
          if (packet) {
         //   resolve(packet[0])
            DirBuckets.push(packet[0])
          }
        } catch (e) {
          console.error(e);
          Modal.error({ content: "本地文件损坏,请重新同步服务器数据" });
        }
      })
      .catch(() => {
      });      
  })).then(() => {
    console.log(DirBuckets, '当前读取的数据')
  })
}
 catch (error) {
  console.log(error);
}