开启回调模式报错

[fujilin]

[img=https://img-bbs.csdn.net/upload/201611/08/1478597346_552782.jpg][/img


String sReqMsgSig = getMsg_signature();
String sReqTimeStamp = getTimestamp();
String sReqNonce = getNonce();
//ServletInputStream re = request.getInputStream();
//使用输入流获得正文
ServletInputStream in = request.getInputStream();
BufferedReader reader =new BufferedReader(new InputStreamReader(in));
//BufferedReader br = new BufferedReader(new InputStreamReader((ServletInputStream)request.getInputStream()));
String line = null;
StringBuilder sb = new StringBuilder();
while((line = reader.readLine())!=null){
sb.append(line);
}
System.out.println(sb.toString());
String sReqData = sb.toString();
try {
String sMsg = wxcpt.DecryptMsg(sReqMsgSig, sReqTimeStamp, sReqNonce, sReqData);

sReqMsgSig、sReqTimeStamp 、sReqNonce 都有值不知为什么sReqData取不到值，一直为空，导致XML解释出错，不知何故？请大侠指教!!

[fujilin]

好了，是微信验证出了问题