java完整网页分享后端代码，功能已全部实现，直接放进去就可以使用

package com.fslk.modules.infoshare.rest.service.impl; import com.alibaba.fastjson.JSONObject; import com.fslk.modules.infoshare.rest.UrlParam; import com.fslk.modules.infoshare.rest.service.HttpUtil; import com.fslk.modules.infoshare.rest.service.WxSignService; import com.fslk.utils.RedisUtils; import jodd.net.URLDecoder; import lombok.AllArgsConstructor; import org.apache.commons.lang3.StringUtils; import org.springframework.stereotype.Service; import java.io.UnsupportedEncodingException; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.util.Formatter; import java.util.HashMap; import java.util.Map; import java.util.UUID; /** * @Author: pll * @Description: 无 */ @Service @AllArgsConstructor /** * <p>微信相关</p> * @date : 2021-10-08 15:26 **/ public class WxSignServiceImpl implements WxSignService { private static final String app_id = "XXXXX"; private static final String app_secret = "XXXX"; private final RedisUtils redisUtil; /** * 获取signature(微信分享) */ @Override public Map<String, Object> getSignature(UrlParam param) { if(param == null || StringUtils.isBlank(param.getUrl())){ return null; } //获取jsapi_ticket String jsapi_ticket = getJsapiTicket(); if(StringUtils.isBlank(jsapi_ticket)) { return null; } return sign(jsapi_ticket, URLDecoder.decode(param.getUrl(), "UTF-8")); } //获取jsapi_ticket private String getJsapiTicket(){ //redis中是否存在 Object wx_access_token = redisUtil.get("wx_jsapi_ticket"); if(wx_access_token != null) { return String.valueOf(wx_access_token); } String jsapi_ticket = ""; String accessToken = getAccessToken(); if(StringUtils.isBlank(accessToken)){ return jsapi_ticket; } //定义请求信息 StringBuilder url = new StringBuilder("https://api.weixin.qq.com/cgi-bin/ticket/getticket"); url.append("?"); url.append("type=jsapi"); url.append("&"); url.append("access_token=" + accessToken); //请求微信获取jsapi_ticket String sentGet = HttpUtil.sentGet(String.valueOf(url)); if(StringUtils.isBlank(sentGet)){ return jsapi_ticket; } JSONObject jsonObject = JSONObject.parseObject(sentGet); if(jsonObject.containsKey("ticket")){ jsapi_ticket = jsonObject.getString("ticket"); //存入redis 1.5小时(微信过期机制为2小时) redisUtil.set("wx_jsapi_ticket", jsapi_ticket, 60 * 90); } return jsapi_ticket; } //获取access_token private String getAccessToken(){ //redis中是否存在 Object wx_access_token = redisUtil.get("wx_access_token"); if(wx_access_token != null) { return String.valueOf(wx_access_token); } //定义请求信息 StringBuilder url = new StringBuilder("https://api.weixin.qq.com/cgi-bin/token"); url.append("?"); url.append("grant_type=client_credential"); url.append("&"); url.append("appid=" + app_id); url.append("&"); url.append("secret=" + app_secret); String access_token = ""; //请求微信获取access_token String sentGet = HttpUtil.sentGet(String.valueOf(url)); if(StringUtils.isBlank(sentGet)){ return access_token; } JSONObject jsonObject = JSONObject.parseObject(sentGet); if(jsonObject.containsKey("access_token")){ access_token = jsonObject.getString("access_token"); //存入redis 1.5小时(微信过期机制为2小时) redisUtil.set("wx_access_token", access_token, 60 * 90); } return access_token; } //获取签名signature public static Map<String, Object> sign(String jsapi_ticket, String url) { Map<String, Object> ret = new HashMap<>(); String nonce_str = create_nonce_str(); String timestamp = create_timestamp(); String string1; String signature = ""; //注意这里参数名必须全部小写，且必须有序 string1 = "jsapi_ticket=" + jsapi_ticket + "&noncestr=" + nonce_str + "&timestamp=" + timestamp + "&url=" + url; try{ MessageDigest crypt = MessageDigest.getInstance("SHA-1"); crypt.reset(); crypt.update(string1.getBytes("UTF-8")); signature = byteToHex(crypt.digest()); }catch (NoSuchAlgorithmException e){ e.printStackTrace(); }catch (UnsupportedEncodingException e){ e.printStackTrace(); } ret.put("url", url); ret.put("jsapi_ticket", jsapi_ticket); ret.put("nonceStr", nonce_str); ret.put("timestamp", timestamp); ret.put("signature", signature); ret.put("appid", app_id); return ret; } private static String byteToHex(final byte[] hash) { Formatter formatter = new Formatter(); for (byte b : hash) { formatter.format("%02x", b); } String result = formatter.toString(); formatter.close(); return result; } //生成签名的随机串 private static String create_nonce_str() { return UUID.randomUUID().toString(); } //生成签名的时间戳 private static String create_timestamp() { return Long.toString(System.currentTimeMillis() / 1000); } }