输入流 输出流 字符串 相互转换

public ByteArrayOutputStream parse(InputStream in) throws Exception {
ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
int ch;
while ((ch = in.read()) != -1) {
swapStream.write(ch);
}
return swapStream;
}


public ByteArrayInputStream parse(OutputStream out) throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
baos = (ByteArrayOutputStream) out;
ByteArrayInputStream swapStream = new ByteArrayInputStream(
baos.toByteArray());
return swapStream;
}


public String parse_String(InputStream in) throws Exception {
ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
int ch;
while ((ch = in.read()) != -1) {
swapStream.write(ch);
}
return swapStream.toString();
}


public String parse_String(OutputStream out) throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
baos = (ByteArrayOutputStream) out;
ByteArrayInputStream swapStream = new ByteArrayInputStream(
baos.toByteArray());
return swapStream.toString();
}


public ByteArrayInputStream parse_inputStream(String in) throws Exception {
ByteArrayInputStream input = new ByteArrayInputStream(in.getBytes());
return input;
}


public ByteArrayOutputStream parse_outputStream(String in) throws Exception {
return parse(parse_inputStream(in));
}