一个很好的方法是使用 Apache commons IOUtils 将 InputStream 复制到 StringWriter 中......类似

A nice way to do this is using Apache commons IOUtils to copy the InputStream into a StringWriter... something like

StringWriter writer = new StringWriter();
IOUtils.copy(inputStream, writer, encoding);
String theString = writer.toString();

甚至

// NB: does not close inputStream, you'll have to use try-with-resources for that
String theString = IOUtils.toString(inputStream, encoding); 

或者，如果您不想混合流和写入器，您可以使用 ByteArrayOutputStream

Alternatively, you could use ByteArrayOutputStream if you don't want to mix your Streams and Writers