uniapp如何获取图片的方向

<template><div class="container">    <div class="preview" :class="{ 'landscape': landscape }">      <img  :src="imageSrc" :  style="max-width:90%"transform': 'rotate(' + rotationAngle + 'deg)' }" alt="uniapp如何获取图片的方向" ></div>  </div></template><script>import ExifParser from 'exif-js';export default {  data() {    return {      imageSrc: '',      landscape: false,      rotationAngle: 0,    };  },  methods: {    // 选择图像    chooseImage() {      uni.chooseImage({        success: (res) => {          this.imageSrc = res.tempFilePaths[0];          this.getImageOrientation(); // 获取图像方向        },      });    },    // 获取图像方向    getImageOrientation() {      uni.getImageInfo({        src: this.imageSrc,        success: (res) => {          const imageWidth = res.width;          const imageHeight = res.height;          const orientation = this.getOrientationFromExif(res);          // 调整图像          switch (orientation) {            case 1:              // 正常方向，无需调整              break;            case 2:              // 水平翻转              break;            case 3:              // 顺时针180度              this.rotationAngle = 180;              break;            case 4:              // 垂直翻转              break;            case 5:              // 顺时针旋转90度，然后水平翻转              this.rotationAngle = -90;              this.landscape = true;              break;            case 6:              // 顺时针旋转90度              this.rotationAngle = 90;              break;            case 7:              // 逆时针旋转90度，然后水平翻转              this.rotationAngle = 90;              this.landscape = true;              break;            case 8:              // 逆时针旋转90度              this.rotationAngle = -90;              break;            default:              break;          }        },      });    },    // 从Exif获取图像方向    getOrientationFromExif(imageInfo) {      const exifData = ExifParser.readFromBinaryFile(imageInfo.path);      return exifData.Orientation || 1;    },  },};</script>