request.getInputStream() 的两种解析方式

byte[] bytes = new byte[1024 * 1024];
InputStream is;
try {
is = request.getInputStream();
int nRead = 1;
int nTotalRead = 0;
while (nRead > 0) {
nRead = is.read(bytes, nTotalRead, bytes.length - nTotalRead);
if (nRead > 0)
nTotalRead = nTotalRead + nRead;
}
String str = new String(bytes, 0, nTotalRead, "utf-8");
System.out.println("Str:" + str);
res = str;
is.close();
is = null;
} catch (IOException e) {
e.printStackTrace();
}