首先是一个 servlet：
package com.baitw;
import java.io.BufferedReader;
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.baitw.dao.NodeDao;
import com.baitw.dao.impl.NodeDaoImpl;
import com.baitw.hibernate.entity.TChannelnode;
public class WeixinServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public static final String Token = "token";
/**
* 用来接收微信公众平台的验证
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String signature = request.getParameter("signature");
String timestamp = request.getParameter("timestamp");
String nonce = request.getParameter("nonce");
String[] ArrTmp = { Token, timestamp, nonce };
Arrays.sort(ArrTmp);
StringBuffer sb = new StringBuffer();
for (int i = 0; i < ArrTmp.length; i++) {
sb.append(ArrTmp[i]);
}
String pwd = Encrypt(sb.toString());
String echostr = request.getParameter("echostr");
System.out.println("pwd=="+pwd);
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