Java微信公众号安全模式消息解密

public static string streamtostring(httpservletrequest request) throws ioexception {

   bufferedreader reader = new bufferedreader( new inputstreamreader(request.getinputstream()));

   stringbuilder sb = new stringbuilder();

   string line;

   try {

    while ((line = reader.readline()) != null ) {

     sb.append(line);

    }

   } catch (ioexception e) {

    e.printstacktrace();

   }

   return sb.tostring();

  }

  /**

   * xml转为map集合

   *

   * @param request

   * @param msg

   * @return

   * @throws ioexception

   * @throws documentexception

   */

  public static map<string, string> xmltomap(httpservletrequest request, message msg) throws exception {

   saxreader reader = new saxreader();

   string token = "" ;

   string encodingaeskey = "" ;

   string appid = "" ;

   //获取加密消息xml字符串

   /* string format = "<xml><tousername><![cdata[touser]]></tousername><encrypt><![cdata[%1$s]]></encrypt></xml>";

   document document = reader.read(request.getinputstream());

   element rootelement = document.getrootelement();

   element encrypt = rootelement.element("encrypt");*/

//  string fromxml = string.format(format, encrypt.gettext());

   string fromxml = streamtostring(request);

   //解密消息

   wxbizmsgcrypt pc = new wxbizmsgcrypt(token, encodingaeskey, appid);

   //获得解密消息

   string result = pc.decryptmsg(msg.getmsg_signature(), msg.gettimestamp(), msg.getnonce(), fromxml);

   map<string, string> map = new hashmap<>( 6 );

   //将解密后的消息转为xml

   document doc = documenthelper.parsetext(result);

   element root = doc.getrootelement();

   list<element> list = root.elements();

   for (element e : list) {

    map.put(e.getname(), e.gettext());

   }

   return map;

  }

package com.caisin.weixin.domain;

import lombok.data;

@data

public class message {

  private string signature;

  private string timestamp;

  private string nonce;

  private string openid;

  private string msg_signature;

  private string encrypt_type;

}