Java Web中如何获取请求体内容呢？
我们知道请求方式分为两种：Get，Post。
/***
* 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);
}
说明：当请求方式为“Get”时，直接使用request.getQueryString()获取String
当请求方式为“Post”时，读取InputStream（request.getInputStream()）