java web中获取请求体中的内容

原文地址http://hw1287789687.iteye.com/blog/1988694

/***

* Compatible with GET and POST
* 
* @param request
* @return : <code>byte[]</code>
* @throws IOException
*/
public static byte[] getRequestQuery(HttpServletRequest request)
throws IOException {
String submitMehtod = request.getMethod();
String queryString = null;


if (submitMehtod.equals("GET")) {// GET
queryString = request.getQueryString();
String charEncoding = request.getCharacterEncoding();// charset
if (charEncoding == null) {
charEncoding = "UTF-8";
}
return queryString.getBytes(charEncoding);
} else {// POST
return getRequestPostBytes(request);
}
}


/***
* Get request query string, form method : post
* 
* @param request
* @return byte[]
* @throws IOException
*/
public static byte[] getRequestPostBytes(HttpServletRequest request)
throws IOException {
int contentLength = request.getContentLength();
if(contentLength<0){
return null;
}
byte buffer[] = new byte[contentLength];
for (int i = 0; i < contentLength;) {


int readlen = request.getInputStream().read(buffer, i,
contentLength - i);
if (readlen == -1) {
break;
}
i += readlen;
}
return buffer;
}
/***
* Get request query string, form method : post
* 
* @param request
* @return
* @throws IOException
*/
public static String getRequestPostStr(HttpServletRequest request)
throws IOException {
byte buffer[] = getRequestPostBytes(request);
String charEncoding = request.getCharacterEncoding();
if (charEncoding == null) {
charEncoding = "UTF-8";
}
return new String(buffer, charEncoding);
}