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'); } })