使用InputStream读入字符串最佳实践

byte[] buffer = new byte[1024];
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
int length;
while ((length = inputStream.read(buffer)) != -1) {
    byteArrayOutputStream.write(buffer, 0, length);
}
return byteArrayOutputStream.toString(StandardCharsets.UTF_8.name());

char[] buffer = new char[1024];
Reader reader = new InputStreamReader(inputStream, StandardCharsets.UTF_8.name());
StringBuilder stringBuilder = new StringBuilder();
int length;
while ((length = reader.read(buffer, 0, buffer.length)) != -1) {
    stringBuilder.append(buffer, 0, length);
}
return stringBuilder.toString();

String result = IOUtils.toString(inputStream, StandardCharsets.UTF_8.name());