[英]Cannot send image in base64 format with XHR to aws S3 in android(react-native)
I got very strange issue: we have scan functionality for documents in our app and as the result scan give's me encoded base64 image with photo.我遇到了一个非常奇怪的问题:我们的应用程序中有文档扫描功能,结果扫描给了我编码的 base64 图像和照片。 Everything is good on ios platform but when I trying to send my picture on android, I get xhr.status 0 and error.
ios 平台上的一切都很好,但是当我尝试在 android 上发送我的图片时,我得到 xhr.status 0 和错误。 Also, next strange thing is that when I starting debug mode and enable network inspection in react-native-debugger, picture is sending without errors.
另外,下一个奇怪的事情是,当我启动调试模式并在 react-native-debugger 中启用网络检查时,图片发送时没有错误。 I was trying it on release app version, installed on my device, but still got an error with status 0
我在发布应用程序版本上尝试它,安装在我的设备上,但仍然出现状态 0 的错误
XHR request XHR 请求
export const uploadXHRImage = (url: string, data: IDataUploadImage) => {
return new Promise((resolve, reject) => {
const xhr = new XMLHttpRequest();
xhr.onreadystatechange = () => {
if (xhr.readyState === 4) {
if (xhr.status === 200) {
resolve('Image successfully uploaded to S3');
} else {
reject(localize('failedUploadImage'));
}
}
};
xhr.ontimeout = () => reject(localize('timeoutUploadImage'));
xhr.timeout = UPLOAD_IMAGE_TIMEOUT;
xhr.open('PUT', url);
xhr.setRequestHeader('Content-Type', data.type);
xhr.send(data);
});
};
Add to header:添加到 header:
"Content-Type": 'application/json',
"Connection": "close",
I found the answer: Android can not process xhr send image, while image isn't saved as file in cache or other directory.我找到了答案:Android 无法处理 xhr 发送图像,而图像未保存为缓存或其他目录中的文件。 Also, android needs
file://
before data.此外,android 在数据之前需要
file://
。 Example is here:示例在这里:
saveImage = (image: string) => {
if (IS_IOS) {
return `data:image/jpg;base64,${image}`;
}
const tempFileDirectory = `${fs.CachesDirectoryPath}`;
const tempFilePath = `${tempFileDirectory}/${uuidv4()}.jpg`;
fs.writeFile(tempFilePath, image, 'base64');
return `file://${tempFilePath}`;
};
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