java

 

String param="id=88&name=洪兴";

//把字符串转换成字节数组

byte[] data=param.getBytes();

//把字节数组转换成字符串

String s =new String(data);

 

//把字符串转换成流

InputStream inputStream=new ByteArrayInputStream(param.getBytes());

//把流转换成字符串