1.InputStream ---> String
InputStream is = getMethod.getResponseBodyAsStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is, "UTF-8"));
StringBuffer buffer = new StringBuffer();
String str = "", response = "";
while((str = br.readLine())!=null){
response =buffer.append(str).toString();
}
2.String --->InputStream
InputStream stream = new ByteArrayInputStream("".getBytes());
ByteArrayInputStream 是InputStream 的子類








2.String --->InputStream
