业务是:根据扫描不同门店的二维码(上偏博文已经介绍),统计来自各个门店的关注人数。
每个二维码扫描进去都是光大银行的公众号,但是每个门店的二维码中的场景值不一样,要统计通过扫描各个门店进行关注的个数,好判断各个门店的引流情况。
参考博文:https://blog.csdn.net/LiuAustin/article/details/104507369
代码实现:
1.下面WxPublicController代码中,有个get(),post()方法,这两个方法是微信后台自动调用的接口,这个controller的url需要和公众号中配置的url保持一致;
2.由于之前是由(别的公司)PHP写的关于公众号的代码,这次是新增统计各个商户引流情况(我们公司完成java写),所以公众号那边的url不能再进行修改,这下怎么办?
我的思路是:用户关注/取消关注公众号的时候,微信后台会给之前配置好的url中返回一个xml文件,php那边接收到该xml后调用我java这边的接口,进行逻辑处理,由于php那边把xml封装成json了,所以我这边就用@RequestBody JSONObject jsonObject
来接收,然后再进行逻辑处理,其中EventKey就是之前生成的带场景值二维码的场景值,我这边是商户id.
注意:用户扫描二维码,进行关注(Event是subscribe),微信公众号后台才返回EventKey有值,如果是取消关注(Event是unsubscribe),微信公众号后台返回来的EventKey没有值,是空。
/**
* Copyright (C), 2018-2020, XXX有限公司
* FileName: WxPublicController
* Author: zhanglei
* Date: 2020/8/11 13:28
* Description:
* History:
* <author> <time> <version> <desc>
* 作者姓名 修改时间 版本号 描述
*/
package com.asyware.game.controller;
/**
* 〈一句话功能简述〉<br>
* 〈〉
*
* @author zhanglei
* @create 2020/8/11
* @since 1.0.0
*/
import com.asyware.game.entity.Attention;
import com.asyware.game.mapper.AttentionMapper;
import com.asyware.game.service.AttentionService;
import com.asyware.game.utils.SignUtil;
import com.asyware.game.utils.wx.MsgUtil;
import com.asyware.game.utils.wx.TextMsg;
import com.asyware.game.utils.wx.XmlUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import net.sf.json.JSONObject;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* @author liuqh
* @date 2019-08-13 16:26
* @description
*/
@RestController
@RequestMapping(value = "/wx")
@Api(tags = "微信")
public class WxPublicController {
protected static Logger logger = LoggerFactory.getLogger(WxPublicController.class);
//填写和公众号后台配置的一样的token
private static final String TOKENN = "自己公众号的token";
@Autowired
private AttentionService attentionService;
@Autowired
private AttentionMapper attentionMapper;
/**
* 微信公众号appId
*/
@Value("${APPID}")
private String publicAppId;
/**
* 微信公众号appSecret
*/
@Value("${APPSECRET}")
private String publicAppSecret;
@RequestMapping(method = RequestMethod.GET)
public void get(HttpServletRequest request, HttpServletResponse response) {
// 微信加密签名,signature结合了开发者填写的token参数和请求中的timestamp参数、nonce参数。
String signature = request.getParameter("signature");
// 时间戳
String timestamp = request.getParameter("timestamp");
// 随机数
String nonce = request.getParameter("nonce");
// 随机字符串
String echostr = request.getParameter("echostr");
PrintWriter out = null;
try {
out = response.getWriter();
// 通过检验signature对请求进行校验,若校验成功则原样返回echostr,否则接入失败
if (SignUtil.checkSignature(TOKENN, signature, timestamp, nonce)) {
out.print(echostr);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (out != null ) {
out.close();
}
}
}
// @RequestMapping(method = RequestMethod.POST)
@ApiOperation(value = "PHP那边传入json,进行商户关注人数加减一",notes = "")
@PostMapping("/parseXml")
public void post(HttpServletRequest request, HttpServletResponse response,
@RequestBody JSONObject jsonObject) throws Exception{
// 响应消息
PrintWriter out = null;
String resMessage = "success";
try {
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
//把微信返回的xml信息转义成map
// Map<String, String> map = XmlUtil.parseXml(request);
//消息来源用户标识
String fromUserName = (String)jsonObject.get("FromUserName");
//消息目的用户标识
String toUserName = (String)jsonObject.get("ToUserName");
//消息创建时间(整型)
String createTime = (String)jsonObject.get("CreateTime");
//消息类型
String msgType =(String)jsonObject.get("MsgType");
//事件类型:subscribe/unsubscribe
String eventType = (String)jsonObject.get("Event");
//如果为事件类型
if(MsgUtil.MSGTYPE_EVENT.equals(msgType)){
//处理订阅事件
if(MsgUtil.MESSAGE_SUBSCIBE.equals(eventType)){
resMessage = MsgUtil.subscribeForText(toUserName, fromUserName,"欢迎关注,精彩内容不容错过!!!");
//TODO 关注的业务逻辑
//场景值
String eventKey = (String)jsonObject.get("EventKey");
List<Attention> list = attentionService.lambdaQuery().eq(Attention::getOpenId, fromUserName).list();
if(CollectionUtils.isEmpty(list) && !StringUtils.isEmpty(eventKey)){//没有关注过
String[] s = eventKey.split("_");
if("1".equals(s[2])){//关注二维码
Attention a=new Attention(fromUserName,Integer.valueOf(s[1]));
attentionMapper.insert(a);
}else{//核销二维码
}
}
} else if(MsgUtil.MESSAGE_UNSUBSCIBE.equals(eventType)) { //处理取消订阅消息
resMessage = MsgUtil.unsubscribeForText(toUserName, fromUserName);
//TODO 取消关注的业务逻辑
List<Attention> list = attentionService.lambdaQuery().eq(Attention::getOpenId, fromUserName).list();
if(!CollectionUtils.isEmpty(list)){
attentionMapper.deleteById(list.get(0).getId());
}
}else if(MsgUtil.MSGTYPE_EVENT.equals(eventType)){//关注之后的扫码消息
//场景值
String eventKey = (String)jsonObject.get("EventKey");
if(!StringUtils.isEmpty(eventKey)){
String[] s = eventKey.split("_");
if("2".equals(s[2])){//核销二维码
}
}
//todo
}
logger.info("eventType:"+eventType+",fromUserName:"+fromUserName+",toUserName:"+toUserName+",msgType:"+msgType+",createTime:"+createTime);
}
out = response.getWriter();
out.println(resMessage);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {
if (out != null ) {
out.close();
}
}
}
}
2.SignUtil类:
/**
* Copyright (C), 2018-2020, XXX有限公司
* FileName: SignUtil
* Author: zhanglei
* Date: 2020/8/11 12:01
* Description:
* History:
* <author> <time> <version> <desc>
* 作者姓名 修改时间 版本号 描述
*/
package com.asyware.game.utils;
/**
* 〈一句话功能简述〉<br>
* 〈〉
*
* @author zhanglei
* @create 2020/8/11
* @since 1.0.0
*/
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
/**
* @author liuqh
* @date 2019-08-13 16:20
* @description
*/
public class SignUtil {
/**
* 验证签名
* @param token
* @param signature 签名用来核实最后的结果是否一致
* @param timestamp 时间标记
* @param nonce 随机数字标记
* @return 一个布尔值确定最后加密得到的是否与signature一致
*/
public static boolean checkSignature(String token, String signature, String timestamp, String nonce) {
//将传入参数变成一个String数组然后进行字典排序
String[] arr = new String[] { token, timestamp, nonce };
// 将token、timestamp、nonce三个参数进行字典排序
Arrays.sort(arr);
//创建一个对象储存排序后三个String的结合体
StringBuilder content = new StringBuilder();
for (int i = 0; i < arr.length; i++) {
content.append(arr[i]);
}
MessageDigest md = null;
String tmpStr = null;
try {
md = MessageDigest.getInstance("SHA-1");
byte[] digest = md.digest(content.toString().getBytes());
tmpStr = byteToStr(digest);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
content = null;
// 将sha1加密后的字符串可与signature对比
return tmpStr != null ? tmpStr.equals(signature.toUpperCase()) : false;
}
/**
* 将字节数组转换为十六进制字符串
* @param byteArray
* @return
*/
private static String byteToStr(byte[] byteArray) {
String strDigest = "";
for (int i = 0; i < byteArray.length; i++) {
strDigest += byteToHexStr(byteArray[i]);
}
return strDigest;
}
/**
* 将每一个字节转换为十六进制字符串
* @param mByte
* @return
*/
private static String byteToHexStr(byte mByte) {
//转位数参照表
char[] Digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
char[] tempArr = new char[2];
tempArr[0] = Digit[(mByte >>> 4) & 0X0F];
tempArr[1] = Digit[mByte & 0X0F];
//得到进制码的字符串
String s = new String(tempArr);
return s;
}
}
3.MsgUtil类:
/**
* Copyright (C), 2018-2020, XXX有限公司
* FileName: MsgUtil
* Author: zhanglei
* Date: 2020/8/11 13:25
* Description:
* History:
* <author> <time> <version> <desc>
* 作者姓名 修改时间 版本号 描述
*/
package com.asyware.game.utils.wx;
/**
* 〈一句话功能简述〉<br>
* 〈〉
*
* @author zhanglei
* @create 2020/8/11
* @since 1.0.0
*/
import java.util.Date;
/**
* @author liuqh
* @date 2020-02-20 10:10
* @description
*/
public class MsgUtil {
public static final String MSGTYPE_EVENT = "event";//消息类型--事件
public static final String MESSAGE_SUBSCIBE = "subscribe";//消息事件类型--订阅事件
public static final String MESSAGE_UNSUBSCIBE = "unsubscribe";//消息事件类型--取消订阅事件
public static final String MESSAGE_SCAN = "scan";//消息事件类型--已关注时的扫码事件
public static final String MESSAGE_TEXT = "text";//消息类型--文本消息
/**
* 组装文本消息
*/
public static String textMsg(String toUserName,String fromUserName,String content){
TextMsg text = new TextMsg();
text.setFromUserName(toUserName);
text.setToUserName(fromUserName);
text.setMsgType(MESSAGE_TEXT);
text.setCreateTime(new Date().getTime());
text.setContent(content);
return XmlUtil.textMsgToxml(text);
}
/**
* 响应订阅事件--回复文本消息
*/
public static String subscribeForText(String toUserName,String fromUserName,String content){
return textMsg(toUserName, fromUserName, content);
}
/**
* 响应取消订阅事件
*/
public static String unsubscribeForText(String toUserName,String fromUserName){
System.out.println("用户:"+ fromUserName +"取消关注~");
return "";
}
}