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在上一步准备工作完成以后,我们需要配置
import java.security.MessageDigest;
import java.util.Arrays;
public class CheckUtil {
private static final String token = "changeyourNick"; //改成唯一的字符串
public static boolean checkSignature(String signature,String timestamp,String nonce){
String[] arr = new String[]{token,timestamp,nonce};
//排序
Arrays.sort(arr);
//..生成字符串
StringBuffer content = new StringBuffer();
for (int i = 0; i < arr.length; i++) {
content.append(arr[i]);
}
String temp = getSha1(content.toString());
return temp.equals(signature);
}
public static String getSha1(String str){
if(str==null||str.length()==0){
return null;
}
char hexDigits[] = {'0','1','2','3','4','5','6','7','8','9',
'a','b','c','d','e','f'};
try {
MessageDigest mdTemp = MessageDigest.getInstance("SHA1");
mdTemp.update(str.getBytes("UTF-8"));
byte[] md = mdTemp.digest();
int j = md.length;
char buf[] = new char[j*2];
int k = 0;
for (int i = 0; i < j; i++) {
byte byte0 = md[i];
buf[k++] = hexDigits[byte0 >>> 4 & 0xf];
buf[k++] = hexDigits[byte0 & 0xf];
}
return new String(buf);
} catch (Exception e) {
// TODO: handle exception
return null;
}
}
}
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.dom4j.DocumentException;
import com.exp.library.util.CheckUtil;
/**
* Servlet implementation class WeiXinServlet
*/
public class WeiXinServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public WeiXinServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
//接入doGet
protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
// TODO Auto-generated method stub
String signature = req.getParameter("signature");
String timestamp = req.getParameter("timestamp");
String nonce = req.getParameter("nonce");
String echostr = req.getParameter("echostr");
PrintWriter out = res.getWriter();
//校验成功返回echostr
if(CheckUtil.checkSignature(signature, timestamp, nonce)){
out.print(echostr);
}
}
}
<servlet>
<servlet-name>weixinServlet</servlet-name>
<servlet-class>你的servlet位置</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>weixinServlet</servlet-name>
<url-pattern>/wx.do</url-pattern>
</servlet-mapping>
(地址改成你自己的)
如果出现上面的页面 说明你外网映射成功了 然后我们在配置公众号
这样配置工作基本完成(验证消息的确来自微信服务器)