微信票据接入

2019-10-18

请记住，你是否拥有完整的微信公众号权限！
请记住，你是否拥有完整的微信公众号权限！
请记住，你是否拥有完整的微信公众号权限！

这是一个血淋淋的教训，自己开发完了。然后数据不及预期。从周五周六晚上排查一共 10 个小时。

票据接入方案 JAVA 版本

package com.murphyyi.wechat.manger;

import cn.hutool.http.HttpUtil;
import com.alibaba.fastjson.JSON;
import com.murphyyi.wechat.bean.vo.WechatTicketVO;
import com.murphyyi.wechat.bean.vo.WechatTokenVO;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import static com.murphyyi.wechat.utils.RandomString.SHA1;
import static com.murphyyi.wechat.utils.RandomString.getRandomStringByLength;

@Service
public class WechatConfig {
    @Resource
    RedisTemplate<Object, Object> redisTemplate;

    public Map<String, Object> jsAPI(String appId,String appSecret,String url){
        String noncestr = getRandomStringByLength(32);
        String jsapiTicket = null;
        try {
            jsapiTicket = getJsapiTicket(appId,appSecret);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        String timestamp = String.valueOf(System.currentTimeMillis()).substring(0,10);
        String str = "jsapi_ticket="+jsapiTicket+"&noncestr="+noncestr+"&timestamp="+timestamp+"&url="+url;
        Map<String, Object> map = new HashMap<>();
        map.put("appId",appId);
        map.put("timestamp",timestamp);
        map.put("nonceStr",noncestr);
        map.put("signature",SHA1(str));
        map.put("jsticket",jsapiTicket);
        map.put("url",url);
        return map;
    }

    private String getJsapiTicket(String appId,String appSecret) throws InterruptedException {
        Object obj =redisTemplate.opsForValue().get(appId+appSecret+"TICKET");
        String ticket = null;
        if(obj!=null){
            ticket = obj.toString();
        }

        while (null == ticket){
            Map<String, Object> data = new HashMap<>();
            data.put("access_token",getAccessToken(appId,appSecret));
            data.put("type","jsapi");
            String result = HttpUtil.get("https://api.weixin.qq.com/cgi-bin/ticket/getticket",data);
            WechatTicketVO wechatTicketVO = JSON.parseObject(result, WechatTicketVO.class);
            if(wechatTicketVO.getTicket()!=null){
                redisTemplate.opsForValue().set(appId+appSecret+"TICKET", wechatTicketVO.getTicket(), 7200, TimeUnit.SECONDS);
                break;
            }
            Thread.sleep(3000);
        }
        return ticket;
    }

    private String getAccessToken(String appId,String appSecret) throws InterruptedException {
        Object obj =redisTemplate.opsForValue().get(appId+appSecret+"TOKEN");
        String token  = null;
        if(obj!=null){
            token = obj.toString();
        }
        while (token==null){
            Map<String, Object> data = new HashMap<>();
            data.put("grant_type","client_credential");
            data.put("appid",appId);
            data.put("secret",appSecret);
            String result = HttpUtil.get("https://api.weixin.qq.com/cgi-bin/token", data);
            WechatTokenVO wechatTokenVO = JSON.parseObject(result, WechatTokenVO.class);
            if(wechatTokenVO.getAccess_token()!=null) {
                token = wechatTokenVO.getAccess_token();
                redisTemplate.opsForValue().set(appId + appSecret + "TOKEN", wechatTokenVO.getAccess_token(), 7200, TimeUnit.SECONDS);
                break;
            }
            Thread.sleep(3000);
        }
        return token;
    }
}

SHA1 加密

package com.murphyyi.wechat.utils;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Random;

public class RandomString {
    //可以指定字符串的某个位置是什么范围的值
    public static String getRandomStringByLength(int length){
        Random random=new Random();
        StringBuffer sb=new StringBuffer();
        for(int i=0;i<length;i++){
            int number=random.nextInt(3);
            long result=0;
            switch(number){
                case 0:
                    result=Math.round(Math.random()*25+65);
                    sb.append(String.valueOf((char)result));
                    break;
                case 1:
                    result=Math.round(Math.random()*25+97);
                    sb.append(String.valueOf((char)result));
                    break;
                case 2:
                    sb.append(String.valueOf(new Random().nextInt(10)));
                    break;
            }
        }
        return sb.toString();
    }
    public static String SHA1(String decript) {
        try {
            MessageDigest digest = java.security.MessageDigest.getInstance("SHA-1");
            digest.update(decript.getBytes());
            byte messageDigest[] = digest.digest();
            // Create Hex String
            StringBuffer hexString = new StringBuffer();
            // 字节数组转换为 十六进制 数
            for (byte b : messageDigest) {
                String shaHex = Integer.toHexString(b & 0xFF);
                if (shaHex.length() < 2) {
                    hexString.append(0);
                }
                hexString.append(shaHex);
            }
            return hexString.toString();

        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        return "";
    }
}

package com.murphyyi.wechat.bean.vo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class WechatTicketVO {
    Integer errcode;
    String errmsg;
    String ticket;
    Integer expirs_in;
}

package com.murphyyi.wechat.bean.vo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class WechatTokenVO {
    Integer errcode;
    String errmsg;
    String access_token;
    Integer expirs_in;
}

Golang 方案待完成