string转化为stream（使用InputStream）
public static InputStream strToStream(String str) {
if (StringUtils.isNotBlank(str)) {
return new ByteArrayInputStream(str.getBytes(StandardCharsets.UTF_8));
}
return null;
}
string转化为stream（使用InputStreamReader）
public static InputStreamReader strToStreamReader(String str) {
if (StringUtils.isNotBlank(str)) {
return new InputStreamReader(new ByteArrayInputStream(str.getBytes(StandardCharsets.UTF_8)));
}
return null;
}
stream转化为string（使用InputStream）
public static String streamToStr(InputStream inputStream) {
if (inputStream != null) {
try (BufferedInputStream reader = new BufferedInputStream(inputStream)) {
return IOUtils.toString(reader, StandardCharsets.UTF_8);
} catch (IOException e) {
log.error("Failed to change stream to string", e);
}
}
return null;
}
stream转化为string（使用InputStreamReader）
public static String streamReaderToStr(InputStreamReader inputStreamReader) {
if (inputStreamReader != null) {
try {
return IOUtils.toString(inputStreamReader);
} catch (IOException e) {
log.error("Failed to change streamReader to string", e);
}
}
return null;
}
测试
@Test
public void test_change_str_and_stream() {
InputStream inputStream = StreamUtil.strToStream("你好");
System.out.println("inputStream is "+inputStream);
String str = StreamUtil.streamToStr(inputStream);
System.out.println(str);
InputStreamReader inputStreamReader = StreamUtil.strToStreamReader("你好");
System.out.println("inputStreamReader is "+inputStreamReader);
String strReader = StreamUtil.streamReaderToStr(inputStreamReader);
System.out.println(strReader);
}
//inputStream is java.io.ByteArrayInputStream@6c629d6e
//你好
//inputStreamReader is java.io.InputStreamReader@5a42bbf4
//你好
