微信公众号之分享接口服务器端

╰+攻爆jí腚メ 2022-03-31 07:26 167阅读 0赞

## 前言 ##

我们会发现一些微信公众号中的网站，他们有的分享出去标题以及摘要是自定义的，那么这就是用到了分享接口

### 1、h5需要的数据实体类 ###

import lombok.Data;
    import lombok.experimental.Accessors;
    
    import java.util.Date;
    
    /** * 作者 ：HealerJean * 日期 ：2018/12/17 下午7:11. * 类描述： */
    @Data
    @Accessors
    public class ResJsApiTickeData { 
    
        private String appId ; //微信公众号id
    
        private Long timestamp ;//时间戳
    
        private String  nonceStr; //随机字符串
    
        private String  signature ; //签名
    
    }

### 2、获取JSapi中的ticket ###

/** * @Desc: JsapiTicket * @Date: 2018/5/24 下午6:50 */
    
        public  static String getJsapiTicket( WeChatBusinessNo weChatBusinessNo){ 
    
            WeChatJsApiTicket weChatJsApiTicket =jsSdkUtils.getWechatJsapiTicket(weChatBusinessNo.getId());
    
            if(weChatJsApiTicket !=null){  //先判断数据库中有没有
                return weChatJsApiTicket.getJsTicke();
            }
    
            String accessToken =  AccessToakeUtil.getAccessToaken(weChatBusinessNo);
            String url = WechatApiUrlParams.JS_API_TICKET_URL.replace("ACCESS_TOKEN", accessToken) ;
            HttpBackBean httpBackBean = HttpHelper.handleGet(url,null,null, HttpHelper.OVERTIME);
    
            log.info("获取 accessToken 返回结果"+httpBackBean.getResult());
            String jsTicket = JSONObject.fromObject(httpBackBean.getResult()).getString("ticket");
            if(jsTicket!=null){ 
                jsSdkUtils.saveWechatJsapiTicket(jsTicket, weChatBusinessNo.getId()); //向数据库中保存accessToaken
                return  jsTicket;
            }else { 
                log.error("获取accessToken失败");
            }
    
            return null;
        }

### 3、根据前台传来的url制作签名 ###

public ResJsApiTickeData getSignature(String url, String key){ 
    
            ResJsApiTickeData data = new ResJsApiTickeData() ;
    
            WechatWebKey wechatWebKey = wechatWebKeyRepository.findByWeChatWebKey(key);
            WeChatBusinessNo fuweChatBusinessNo =  weChatBusinessNoRepository.findOne(wechatWebKey.getFuId());
            data.setAppId(fuweChatBusinessNo.getAppId());
    
            Long timestamp = System.currentTimeMillis() ;
            data.setTimestamp(timestamp);
    
            String noncestr = StringGeneratorUtil.generateString(5);
            data.setNonceStr(noncestr);
    
            String jsTicket= JsSdkUtils.getJsapiTicket(fuweChatBusinessNo);
            data.setSignature(JsSdkUtils.sign(jsTicket, url, noncestr, timestamp));
            
            return data ;
        }

### 4、签名制作 ###

/** * * 作者： HealerJean * 日期: 2018/12/11 下午5:14. * 方法描述: 开始JS——SDK签名 */
        public static String sign(String jsapi_ticket, String url,String noncestr ,Long timestamp) { 
            //注意这里参数名必须全部小写，且必须有序
            String str = "jsapi_ticket=" + jsapi_ticket +
                    "&noncestr=" + noncestr +
                    "&timestamp=" + timestamp +
                    "&url=" + url;
            String  signature =   AesUtils.SHA1(str);
            return signature;
        }
    
    
    
    
        /** * 微信 校验 SHA1 加密 * * @param decript * @return */
        public static String SHA1(String decript) { 
            try { 
                MessageDigest digest = 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 (int i = 0; i < messageDigest.length; i++) { 
                    String shaHex = Integer.toHexString(messageDigest[i] & 0xFF);
                    if (shaHex.length() < 2) { 
                        hexString.append(0);
                    }
                    hexString.append(shaHex);
                }
                return hexString.toString();
    
            } catch (NoSuchAlgorithmException e) { 
                e.printStackTrace();
            }
            return "";
        }

![ContactAuthor][]

[ContactAuthor]: /images/20220331/78c7391e2a6749c1899cdcd89011998f.png