Spring Boot 将 InputStream 输入流转换为 String
Spring Boot About 1,214 wordsStreamUtils
Spring
中提供了StreamUtils
工具类,将InputStream
转换为String
。
注意:不会关闭流。
使用
假设转换HttpServletRequest
的输入流为String
。
HttpServletRequest request = xxx;
String content = StreamUtils.copyToString(request.getInputStream(), StandardCharsets.UTF_8);
源码
// org.springframework.util.StreamUtils
public abstract class StreamUtils {
/**
* Copy the contents of the given InputStream into a String.
* <p>Leaves the stream open when done.
* @param in the InputStream to copy from (may be {@code null} or empty)
* @param charset the {@link Charset} to use to decode the bytes
* @return the String that has been copied to (possibly empty)
* @throws IOException in case of I/O errors
*/
public static String copyToString(@Nullable InputStream in, Charset charset) throws IOException {
if (in == null) {
return "";
}
StringBuilder out = new StringBuilder();
InputStreamReader reader = new InputStreamReader(in, charset);
char[] buffer = new char[BUFFER_SIZE];
int charsRead;
while ((charsRead = reader.read(buffer)) != -1) {
out.append(buffer, 0, charsRead);
}
return out.toString();
}
}
Views: 2,362 · Posted: 2023-01-23
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