微信分享，终结版，及报错config:fail,Error: invalid signature"错误解决

/**
 * 获取access_token
 */
public static final String WX_SHARE_TOKEN = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET";
/**
 * TICKET
 */
public static final String WX_SHARE_TICKET = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=ACCESS_TOKEN&type=jsapi";

public void getWxShareParameter(String url) {
    try {
        url = URLDecoder.decode(url, "UTF-8");
    } catch (UnsupportedEncodingException e) {
        log.error("微信分享获取url错误", e);
    }
    log.info("微信分享信息，url = " + url);
//从缓存中取
    RedisUtils redisUtils = SpringContextHolder.getBean("redisUtils");
    String accessTokenString;
    //获取AccessToken
    String returnCode = redisUtils.getString("ACCESS_TOKEN");

    if (StringUtils.isBlank(returnCode)) {
        String accessTokenUrl = WX_SHARE_TOKEN
                .replace("APPID", 公众号id)
                .replace("APPSECRET", 公众号secret);
        JSONObject accessToken = restTemplate.getForObject(accessTokenUrl, JSONObject.class);
        log.info("微信分享信息，accessToken = " + JSON.toJSONString(accessToken));
        accessTokenString = accessToken.getString("access_token");
// 放入缓存，有效期两小时
        redisUtils.set("ACCESS_TOKEN", accessTokenString, 7200);
    } else {
        accessTokenString = returnCode;
    }
    log.info("微信分享信息" + accessTokenString);
    if (StringUtils.isNotBlank(accessTokenString)) {
        String jsapiTicket;
//从缓存中取
        String ticket = redisUtils.getString("JSAPI_TICKET");
        if (StringUtils.isBlank(ticket)) {
            String ticketUrl = WX_SHARE_TICKET
                    .replace("ACCESS_TOKEN", accessTokenString);
            JSONObject ticketObject = restTemplate.getForObject(ticketUrl, JSONObject.class);
            log.info("微信分享信息" + JSON.toJSONString(ticketObject));
            jsapiTicket = ticketObject.getString("ticket");
            log.info("微信分享信息" + jsapiTicket);
// 放入缓存，有效期两小时
            redisUtils.set("JSAPI_TICKET", jsapiTicket, 7200);
        } else {
            jsapiTicket = ticket;
        }
        if (StringUtils.isNotBlank(jsapiTicket)) {
            Map<String, String> data = new HashMap<>();
            String noncestr = getRandomString(16);
            String timestamp = Long.toString(System.currentTimeMillis() / 1000);
            //注意这里参数名必须全部小写，且必须有序
            data.put("jsapi_ticket", jsapiTicket);
            data.put("noncestr", noncestr);
            data.put("timestamp", timestamp);
            data.put("url", url);
            String dataString = createLinkString(data);
            String resSign = DigestUtils.sha1Hex(dataString);
            data.put("paySign", resSign);
            data.put("appId", payProperties.getWeixinAppId());
            return ResultBody.ok().data(data);
        }
    }
}

 

//随机字符串生成
private String getRandomString(int length) { //length表示生成字符串的长度
    String base = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < length; i++) {
        int number = RandomUtils.nextInt(0, base.length());
        sb.append(base.charAt(number));
    }
    return sb.toString();
}

 

private String createLinkString(Map<String, String> params) {
    List<String> keys = new ArrayList<>(params.keySet());
    Collections.sort(keys);
    String prestr = "";
    for (int i = 0; i < keys.size(); i++) {
        String key = keys.get(i);
        String value = params.get(key);
        if (i == keys.size() - 1) {// 拼接时，不包括最后一个&字符
            prestr = prestr + key + "=" + value;
        } else {
            prestr = prestr + key + "=" + value + "&";
        }
    }
    return prestr;
}

前端代码

 

前提首先要有一个公众号和已经备案好的域名，再公众号里面设置