在这个例子中,我想测量我的上传进度,而不是图像,base64
而是一个简单的字符串。该字符串通常约为。500 KB 长度。
在示例中,我从 OkHttp3 扩展了 BodyRequestBody
并覆盖了:
@Override
public void writeTo(BufferedSink sink) throws IOException {
StringReader in = new StringReader(base64);
char[] buffer = new char[2048];
int uploaded = 0;
try {
int read;
while ((read = in.read(buffer, uploaded, buffer.length)) != -1) {
uploaded += read;
System.out.println("BUFFER " + buffer);
sink.write(new String(buffer).getBytes(), 0, read);
this.callback.onProgressUpdate(uploaded);
}
} catch(IndexOutOfBoundsException e) {
System.err.println("IndexOutOfBoundsException uploaded " + uploaded + " , buffer " + buffer.length + " from total " + base64.length());
} finally {
in.close();
this.callback.onFinish(uploaded);
}
}
我可以成功读取第一个 2048 个字符,但是对于 while-loop 的第二轮,我得到一个IndexOutOfBoundsException
?