微信版本号：8.0.50

wx.chooseMedia({

count: 1,

mediaType: ['image'],

sourceType: ['album', 'camera'],

sizeType: ['compressed'],

camera: 'back',

success: async function(res) {

console.log(res.tempFiles[0].tempFilePath)

const tempFilePath = res.tempFiles[0].tempFilePath;

let image = await getImgInfo(tempFilePath)

let compressPic= await contractionImage(image,'imgCanvas')

console.log(compressPic,'compressPic');

const fs = wx.getFileSystemManager();

const fileContent = fs.readFileSync(compressPic.tempFilePath, 'base64');

console.log(fileContent,'fileContent');

const base64 = fileContent; // 注意：这里假设图片是png格式，根据实际情况可能需要修改

await that.parseBase64(base64)

},

fail(err) {

// 接口调用失败的回调函数

console.error(err, '报错');

}

})