l1024-jav/src/main/java/top/lvzhiqiang/service/impl/Crawler4JavbusServiceImpl.java

package top.lvzhiqiang.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import lombok.extern.slf4j.Slf4j;
import org.jsoup.Connection;
import org.jsoup.HttpStatusException;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
import org.springframework.util.StopWatch;
import top.lvzhiqiang.entity.CrawlerJavbusLog;
import top.lvzhiqiang.entity.CrawlerJavbusProfile;
import top.lvzhiqiang.entity.DicCode;
import top.lvzhiqiang.mapper.CrawlerJavbusProfileMapper;
import top.lvzhiqiang.mapper.DicCodeMapper;
import top.lvzhiqiang.service.Crawler4JavbusService;
import top.lvzhiqiang.util.DateUtils;
import top.lvzhiqiang.util.JsoupUtil;
import top.lvzhiqiang.util.StringUtils;

import javax.annotation.Resource;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.URL;
import java.time.LocalDateTime;
import java.util.*;
import java.util.stream.Collectors;

/**
 * Crawler Javbus ServiceImpl
 *
 * @author lvzhiqiang
 * 2022/10/17 14:47
 */
@Service
@Slf4j
public class Crawler4JavbusServiceImpl implements Crawler4JavbusService {

    @Resource
    private DicCodeMapper dicCodeMapper;
    @Resource
    private CrawlerJavbusProfileMapper crawlerJavbusProfileMapper;
    @Value("${spring.profiles.active}")
    private String env;

    Map<String, String> javbusConstantMap = null;
    Map<String, String> javbusCookiesMap = null;
    String bdAccessToken = "";
    Proxy proxy = null;

    public void beforeJavbus() throws Exception {
        if (null == proxy) {
            if ("dev".equals(env)) {
                proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("127.0.0.1", 1080));
            } else {
                proxy = Proxy.NO_PROXY;
            }
        }
        if (StringUtils.isEmpty(bdAccessToken)) {
            bdAccessToken = getAuth(javbusConstantMap.get("bd_ak"), javbusConstantMap.get("bd_sk"));
        }
        if (null == javbusCookiesMap) {
            for (int i = 0; i < 3; i++) {
                if (generateJavbusCookies(proxy)) {
                    break;
                } else {
                    javbusCookiesMap = null;
                }
            }
            if (javbusCookiesMap == null) {
                throw new Exception("获取javbusCookies失败！");
            }
        }
    }

    @Async
    @Override
    public void jsoupJavbusProfile(Long start, Integer limit) throws Exception {
        log.warn("jsoupJavbusProfile 开始：start={}，limit={}", start, limit);
        StopWatch stopWatch = new StopWatch();
        stopWatch.start();

        // 获取javbus常量MAP
        javbusConstantMap = dicCodeMapper.findAll().stream()
                .filter(x -> "javbus".equals(x.getCodeDesc()) && x.getEnv().contains(env))
                .collect(Collectors.toMap(DicCode::getCodeKey, DicCode::getCodeValue, (key1, key2) -> key1));
        // 代理及TOKEN设置
        beforeJavbus();
        // 获取个人资料
        jsoupJavbusProfileSub(start, limit);
        log.warn("jsoupJavbusProfile 结束：time={}", stopWatch.getTotalTimeSeconds());
    }

    @Async
    @Override
    public void handleJavbusLog(Integer status) throws Exception {
        log.warn("handleJavbusLog 开始：status={}", status);
        StopWatch stopWatch = new StopWatch();
        stopWatch.start();

        // 获取javbus常量MAP
        javbusConstantMap = dicCodeMapper.findAll().stream()
                .filter(x -> "javbus".equals(x.getCodeDesc()) && x.getEnv().contains(env))
                .collect(Collectors.toMap(DicCode::getCodeKey, DicCode::getCodeValue, (key1, key2) -> key1));
        // 代理及TOKEN设置
        beforeJavbus();
        // 获取个人资料
        handleJavbusLogSub(status);
        log.warn("handleJavbusLog 结束：time={}", stopWatch.getTotalTimeSeconds());
    }

    @Override
    public String findJavbusProfile(String keyword, Integer timeDay, Integer pic, String orderField, String order, Integer pageNo, Integer pageSize) {
        Map<String, Object> params = new HashMap<>();
        params.put("keyword", keyword);
        params.put("timeDay", timeDay);
        params.put("orderField", orderField);
        params.put("order", order);

        PageHelper.startPage(pageNo, pageSize);
        List<CrawlerJavbusProfile> crawlerJavbusProfileList = crawlerJavbusProfileMapper.findJavbusProfile4MultipleParams(params);
        PageInfo<CrawlerJavbusProfile> javbusProfilePageInfo = new PageInfo<>(crawlerJavbusProfileList);

        StringBuffer sb = new StringBuffer("total:".concat(String.valueOf(javbusProfilePageInfo.getTotal())).concat("<br/>"));
        sb.append("<table border=\"1\" cellspacing=\"0\"><tr><th>UID</th><th>昵称</th><th>邮箱状态</th><th>好友数</th><th>回帖数</th><th>主题数</th><th>用户组</th><th>在线时间</th><th>注册时间</th><th>上次活动时间</th><th>上次发表时间</th><th>所在时区</th><th>头像</th><th>个人签名文字</th><th>个人签名图片</th></tr>");
        for (CrawlerJavbusProfile crawlerJavbusProfile : crawlerJavbusProfileList) {
            sb.append("<tr>");

            sb.append("<td>").append(crawlerJavbusProfile.getUid()).append("</td>");
            sb.append("<td>").append(crawlerJavbusProfile.getEmailStatus()).append("</td>");
            sb.append("<td>").append(crawlerJavbusProfile.getFriendNum()).append("</td>");
            sb.append("<td>").append(crawlerJavbusProfile.getReplyNum()).append("</td>");
            sb.append("<td>").append(crawlerJavbusProfile.getThreadNum()).append("</td>");
            sb.append("<td>").append(crawlerJavbusProfile.getUserGroup()).append("</td>");
            sb.append("<td>").append(crawlerJavbusProfile.getOnlineTime()).append("</td>");
            sb.append("<td>").append(crawlerJavbusProfile.getRegistrationTime()).append("</td>");
            sb.append("<td>").append(crawlerJavbusProfile.getLastActivityTime()).append("</td>");
            sb.append("<td>").append(crawlerJavbusProfile.getLastPublishedTime()).append("</td>");
            sb.append("<td>").append(crawlerJavbusProfile.getTimeZone()).append("</td>");

            if (pic == 2) {
                sb.append("<td>").append("<img src=\"" + crawlerJavbusProfile.getAvatarUrl() + "\" alt=\"封面\" width=\"147\" height=\"auto\">").append("</td>");
            } else {
                sb.append("<td>").append(crawlerJavbusProfile.getAvatarUrl()).append("</td>");
            }
            sb.append("<td>").append(crawlerJavbusProfile.getSignStr()).append("</td>");

            if (pic == 2) {
                sb.append("<td>");
                String signImg = crawlerJavbusProfile.getSignImg();
                if (StringUtils.isNotEmpty(signImg)) {
                    for (String s : signImg.split(",")) {
                        sb.append("<img src=\"" + s + "\" alt=\"sign\" width=\"147\" height=\"auto\">");
                    }
                } else {
                    sb.append("--");
                }
                sb.append("</td>");
            } else {
                if (StringUtils.isNotEmpty(crawlerJavbusProfile.getSignImg())) {
                    sb.append("<td>").append(crawlerJavbusProfile.getSignImg()).append("</td>");
                } else {
                    sb.append("<td>--</td>");
                }
            }

            sb.append("</tr>");
        }
        sb.append("</table>");

        return sb.toString();
    }

    private void handleJavbusLogSub(Integer status) {
        List<CrawlerJavbusLog> javbusLogByStatus = crawlerJavbusProfileMapper.findJavbusLogByStatus(status);

        String profileUrl = "https://www.javbus.com/forum/?";
        Document profileDocument;
        for (CrawlerJavbusLog javbusLog : javbusLogByStatus) {
            try {
                profileDocument = JsoupUtil.requestDocument(profileUrl.concat(javbusLog.getBusinessKey()), JsoupUtil.HTTP_GET, proxy, javbusCookiesMap, null, null);
                if (profileDocument.html().contains("您指定的用戶空間不存在")) {
                    log.warn("jsoupJavbusProfileSub您指定的用戶空間不存在，start={}", javbusLog.getBusinessKey());
                    continue;
                }

                CrawlerJavbusProfile crawlerJavbusProfile = new CrawlerJavbusProfile();
                parseJavbusProfile(profileDocument, crawlerJavbusProfile);
                crawlerJavbusProfileMapper.insertOrUpdate(crawlerJavbusProfile);
                log.warn("jsoupJavbusProfileSub成功插入，businessKey={}", javbusLog.getBusinessKey());

                javbusLog.setStatus(2);
                javbusLog.setErrorMsg("");
            } catch (Exception e) {
                log.error("jsoupJavbusProfileSub插入异常，businessKey={}", javbusLog.getBusinessKey(), e);
                javbusLog.setStatus(3);
                javbusLog.setErrorMsg(e.getMessage());
            }

            crawlerJavbusProfileMapper.insertOrUpdateLog(javbusLog);
        }
    }

    private void jsoupJavbusProfileSub(Long start, Integer limit) {
        CrawlerJavbusProfile latestJavbusProfile = crawlerJavbusProfileMapper.findLatestInfo();
        if (start == null && latestJavbusProfile == null) {
            start = 1L;
        } else if (start == null && latestJavbusProfile != null) {
            start = latestJavbusProfile.getUid() + 1;
        }

        long startFinal = 0;
        if (limit != null) {
            startFinal = start + limit;
        }

        String profileUrl = "https://www.javbus.com/forum/?";
        Document profileDocument;
        int continueCount = 0;
        while (true) {
            if (startFinal != 0 && start > startFinal) {
                log.warn("jsoupJavbusProfileSub结束，start={}，startFinal={}", start, startFinal);
                return;
            }
            if (start > 500000 && continueCount > 10) {
                log.warn("jsoupJavbusProfileSub结束，start={}，continueCount={}", start, continueCount);
                return;
            }

            try {
                profileDocument = JsoupUtil.requestDocument(profileUrl.concat(String.valueOf(start)), JsoupUtil.HTTP_GET, proxy, javbusCookiesMap, null, null);

                if (profileDocument.html().contains("您指定的用戶空間不存在")) {
                    log.warn("jsoupJavbusProfileSub您指定的用戶空間不存在，start={}", start);
                    start++;
                    continueCount++;
                    continue;
                }

                CrawlerJavbusProfile crawlerJavbusProfile = new CrawlerJavbusProfile();
                parseJavbusProfile(profileDocument, crawlerJavbusProfile);
                crawlerJavbusProfileMapper.insertOrUpdate(crawlerJavbusProfile);
                log.warn("jsoupJavbusProfileSub成功插入，start={}", start);
            } catch (Exception e) {
                log.error("jsoupJavbusProfileSub插入异常，start={}", start, e);
                CrawlerJavbusLog crawlerJavbusLog = new CrawlerJavbusLog();
                crawlerJavbusLog.setType(1);
                crawlerJavbusLog.setStatus(1);
                crawlerJavbusLog.setBusinessKey(String.valueOf(start));
                crawlerJavbusLog.setErrorMsg(e.getMessage());
                crawlerJavbusProfileMapper.insertOrUpdateLog(crawlerJavbusLog);
            }
            start++;
        }
    }

    public void parseJavbusProfile(Document profileDocument, CrawlerJavbusProfile crawlerJavbusProfile) {
        String avatarUrl = profileDocument.select("div.avt").select("img").attr("src");

        String[] mbn0Arr = profileDocument.select("div.u_profile").select("div.cl").get(0).select("h2.mbn").get(0).text().replace("(", "").replace(")", "").split("UID:");
        String nickName = mbn0Arr[0].trim();
        String uid = mbn0Arr[1].trim();

        String emailStatus = profileDocument.select("div.u_profile").select("div.cl").get(0).select("ul").first().text().replace("郵箱狀態", "").trim();

        Elements signEles = profileDocument.select("div.u_profile").select("div.cl").get(0).select("ul").get(1).select("li:contains(個人簽名)");
        String signStr = "";
        ArrayList<String> signImgList = new ArrayList<>();
        if (signEles.size() > 0) {
            signStr = signEles.first().select("table").text();
            Elements signImgEles = signEles.first().select("table").select("img");
            for (Element signImgEle : signImgEles) {
                signImgList.add(signImgEle.attr("src"));
            }
        }

        String friendNum = profileDocument.select("div.u_profile").select("div.cl").get(0).select("ul").get(2)
                .select("a").get(0).text().replace("好友數", "").trim();
        String replyNum = profileDocument.select("div.u_profile").select("div.cl").get(0).select("ul").get(2)
                .select("a").get(1).text().replace("回帖數", "").trim();
        String threadNum = profileDocument.select("div.u_profile").select("div.cl").get(0).select("ul").get(2)
                .select("a").get(2).text().replace("主題數", "").trim();
        String userGroup = profileDocument.select("div.u_profile").select("div.cl").get(1).select("ul").get(0)
                .select("a").text();
        String onlineTime = profileDocument.select("div.u_profile").select("div.cl").get(1).select("ul").get(1)
                .select("li:contains(在線時間)").text().replace("在線時間", "").replace("小時", "").trim();
        String registrationTime = profileDocument.select("div.u_profile").select("div.cl").get(1).select("ul").get(1)
                .select("li:contains(註冊時間)").text().replace("註冊時間", "").trim();
        String lastVisit = profileDocument.select("div.u_profile").select("div.cl").get(1).select("ul").get(1)
                .select("li:contains(最後訪問)").text().replace("最後訪問", "").trim();
        String lastActivityTime = profileDocument.select("div.u_profile").select("div.cl").get(1).select("ul").get(1)
                .select("li:contains(上次活動時間)").text().replace("上次活動時間", "").trim();
        String lastPublishedTime = profileDocument.select("div.u_profile").select("div.cl").get(1).select("ul").get(1)
                .select("li:contains(上次發表時間)").text().replace("上次發表時間", "").trim();
        String timeZone = profileDocument.select("div.u_profile").select("div.cl").get(1).select("ul").get(1)
                .select("li:contains(所在時區)").text().replace("所在時區", "").trim();
        String usedSpace = profileDocument.select("div.u_profile").select("div.cl").get(2).select("ul").get(0)
                .select("li").get(0).text().replace("已用空間", "").replace("B", "").trim();
        String mileage = profileDocument.select("div.u_profile").select("div.cl").get(2).select("ul").get(0)
                .select("li").get(1).text().replace("里程", "").trim();
        String money = profileDocument.select("div.u_profile").select("div.cl").get(2).select("ul").get(0)
                .select("li").last().text().replace("金錢", "").trim();

        crawlerJavbusProfile.setUid(Long.valueOf(uid));
        crawlerJavbusProfile.setNickName(nickName);
        crawlerJavbusProfile.setEmailStatus(emailStatus);
        crawlerJavbusProfile.setFriendNum(Integer.valueOf(friendNum));
        crawlerJavbusProfile.setReplyNum(Integer.valueOf(replyNum));
        crawlerJavbusProfile.setThreadNum(Integer.valueOf(threadNum));
        crawlerJavbusProfile.setUserGroup(userGroup);
        crawlerJavbusProfile.setOnlineTime(StringUtils.isNotEmpty(onlineTime) ? Integer.valueOf(onlineTime) : null);
        crawlerJavbusProfile.setRegistrationTime(StringUtils.isNotEmpty(registrationTime) && registrationTime.length() >= 10 ? LocalDateTime.parse(registrationTime, DateUtils.dateTimeFormatter3) : null);
        crawlerJavbusProfile.setLastVisit(StringUtils.isNotEmpty(lastVisit) && lastVisit.length() >= 10 ? LocalDateTime.parse(lastVisit, DateUtils.dateTimeFormatter3) : null);
        crawlerJavbusProfile.setLastActivityTime(StringUtils.isNotEmpty(lastActivityTime) && lastActivityTime.length() >= 10 ? LocalDateTime.parse(lastActivityTime, DateUtils.dateTimeFormatter3) : null);
        crawlerJavbusProfile.setLastPublishedTime(StringUtils.isNotEmpty(lastPublishedTime) && lastPublishedTime.length() >= 10 ? LocalDateTime.parse(lastPublishedTime, DateUtils.dateTimeFormatter3) : null);
        crawlerJavbusProfile.setTimeZone(StringUtils.isNotEmpty(timeZone) ? timeZone : null);
        crawlerJavbusProfile.setUsedSpace(Integer.valueOf(usedSpace));
        crawlerJavbusProfile.setMileage(Integer.valueOf(mileage));
        crawlerJavbusProfile.setMoney(Integer.valueOf(money));
        crawlerJavbusProfile.setAvatarUrl(avatarUrl);
        crawlerJavbusProfile.setSignStr(signStr);
        crawlerJavbusProfile.setSignImg(org.apache.commons.lang3.StringUtils.join(signImgList, ","));
    }

    private boolean generateJavbusCookies(Proxy proxy) throws Exception {
        // 1 登陆获取cookies
        // 1.0 https://www.javbus.com/forum/forum.php
        Connection.Response forumResponse = JsoupUtil.requestBody(javbusConstantMap.get("forum_url"), JsoupUtil.HTTP_GET, proxy, null);
        Map<String, String> forumCookies = forumResponse.cookies();
        log.warn("generateJavbusCookies=>，forum_url={}，forumCookies={}", javbusConstantMap.get("forum_url"), forumCookies);
        // 1.1 https://www.javbus.com/forum/member.php
        Map<String, String> params = new HashMap<>(8);
        params.put("mod", "logging");
        params.put("action", "login");
        params.put("referer", "");
        params.put("infloat", "yes");
        params.put("handlekey", "login");
        params.put("inajax", "1");
        params.put("ajaxtarget", "fwin_content_login");
        String memberHtmlStr = JsoupUtil.requestDocument(javbusConstantMap.get("member_url"), JsoupUtil.HTTP_GET, proxy, forumCookies, null, params).html().replace("<![CDATA[", "").replace("]]>", "");
        Document memberDocument = Jsoup.parse(memberHtmlStr);
        String key1 = memberDocument.select("input[type='password']").first().attr("id").split("_")[1];
        String key2 = memberDocument.select("span[id^='seccode']").first().attr("id").split("_")[1];
        String key3 = memberDocument.select("input[name='formhash']").first().val();
        // 1.2 https://www.javbus.com/forum/misc.php
        params.clear();
        params.put("mod", "seccode");
        params.put("action", "update");
        params.put("idhash", key2);
        params.put("modid", "member::logging");
        Document miscDocument = JsoupUtil.requestDocument(javbusConstantMap.get("misc_url"), JsoupUtil.HTTP_GET, proxy, forumCookies, null, params);
        String imgVerifyUrl = "https://www.javbus.com/forum/" + miscDocument.select("img[onclick]").first().attr("src");
        // 1.3 get verifyImg
        Map<String, String> headerParams = new HashMap<>(8);
        headerParams.put("referer", javbusConstantMap.get("forum_url"));
        Connection.Response imgResponse = JsoupUtil.requestBody(imgVerifyUrl, JsoupUtil.HTTP_GET, proxy, forumCookies, headerParams, null);
        byte[] imgBytes = imgResponse.bodyAsBytes();
        Map<String, String> imgCookies = imgResponse.cookies();
        log.warn("generateJavbusCookies=>，imgVerifyUrl={}，imgCookies={}", imgVerifyUrl, imgCookies);
        String cookieKey4Seccode = "";
        for (Map.Entry<String, String> imgCookie : imgCookies.entrySet()) {
            if (imgCookie.getKey().contains("seccode")) {
                cookieKey4Seccode = imgCookie.getKey();
                break;
            }
        }
        // 1.4 get imgVerifyNumber by BaiduOCR
        headerParams.clear();
        headerParams.put("Content-Type", "application/x-www-form-urlencoded");
        params.clear();
        params.put("image", Base64.getEncoder().encodeToString(imgBytes));
        JSONObject crAccurateBasicResult = null;
        String seccodeverify = "";
        for (int i = 0; i < 3; i++) {
            try {
                Connection.Response ocrResponse = JsoupUtil.requestBody(javbusConstantMap.get("bd_ocr_url").concat("?access_token=").concat(bdAccessToken),
                        JsoupUtil.HTTP_POST, Proxy.NO_PROXY, headerParams, params);
                crAccurateBasicResult = JSONObject.parseObject(ocrResponse.body());
                seccodeverify = crAccurateBasicResult.getJSONArray("words_result").getJSONObject(0).getString("words");
                break;
            } catch (HttpStatusException hse) {
                bdAccessToken = getAuth(javbusConstantMap.get("bd_ak"), javbusConstantMap.get("bd_sk"));
            } catch (Exception e) {
                log.error("BaiduOCR异常，bdOcrUrl={},bdAccessToken={},crAccurateBasicResult={}", javbusConstantMap.get("bd_ocr_url"), bdAccessToken, crAccurateBasicResult, e);
                if (i == 2) {
                    throw new Exception("BaiduOCR异常！");
                }
            }
        }
        // 1.5 https://www.javbus.com/forum/member.php
        String sbParams = "?mod=logging&action=login&loginsubmit=yes&handlekey=login&loginhash=" + key1 + "&inajax=1";
        headerParams.clear();
        headerParams.put("Content-Type", "application/x-www-form-urlencoded");
        params.clear();
        params.put("formhash", key3);
        params.put("referer", javbusConstantMap.get("forum_url"));
        params.put("loginfield", "username");
        params.put("username", javbusConstantMap.get("username"));
        params.put("password", javbusConstantMap.get("password"));
        params.put("questionid", "0");
        params.put("answer", "");
        params.put("seccodehash", key2);
        params.put("seccodemodid", "member::logging");
        params.put("seccodeverify", seccodeverify);
        if (cookieKey4Seccode != "") {
            forumCookies.put("existmag", "mag");
            forumCookies.put(cookieKey4Seccode, imgCookies.get(cookieKey4Seccode));
        }
        String loginUrl = javbusConstantMap.get("member_url").concat(sbParams);
        Connection.Response loginResponse = JsoupUtil.requestBody(loginUrl, JsoupUtil.HTTP_POST, proxy, forumCookies, headerParams, params);
        String loginBody = loginResponse.body();
        Map<String, String> loginCookies = loginResponse.cookies();
        log.warn("generateJavbusCookies=>，loginUrl={}，params={}，forumCookies={}，loginCookies={}，loginResponseBody={}", loginUrl, params, forumCookies, loginCookies, loginResponse.body());
        for (Map.Entry<String, String> loginCookie : loginCookies.entrySet()) {
            if (loginCookie.getKey().contains("ulastactivity")) {
                forumCookies.put(loginCookie.getKey(), loginCookie.getValue());
            } else if (loginCookie.getKey().contains("auth")) {
                forumCookies.put(loginCookie.getKey(), loginCookie.getValue());
            } else if (loginCookie.getKey().contains("lastcheckfeed")) {
                forumCookies.put(loginCookie.getKey(), loginCookie.getValue());
            } else if (loginCookie.getKey().contains("lip")) {
                forumCookies.put(loginCookie.getKey(), loginCookie.getValue());
            }
        }
        log.warn("generateJavbusCookies=>，forumFinalCookies={}", forumCookies);
        javbusCookiesMap = forumCookies;

        return loginBody.contains("歡迎您回來");
    }

    public String getAuth(String ak, String sk) {
        // 获取token地址
        String authHost = javbusConstantMap.get("bd_authhost_url");
        String getAccessTokenUrl = authHost
                // 1. grant_type为固定参数
                + "grant_type=client_credentials"
                // 2. 官网获取的 API Key
                + "&client_id=" + ak
                // 3. 官网获取的 Secret Key
                + "&client_secret=" + sk;
        try {
            URL realUrl = new URL(getAccessTokenUrl);
            // 打开和URL之间的连接
            HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection();
            connection.setRequestMethod("GET");
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            /*for (String key : map.keySet()) {
                System.err.println(key + "--->" + map.get(key));
            }*/
            // 定义 BufferedReader输入流来读取URL的响应
            BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String result = "";
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
            /**
             * 返回结果示例
             */
            System.err.println("result:" + result);
            JSONObject jsonObject = JSONObject.parseObject(result);
            String access_token = jsonObject.getString("access_token");
            return access_token;
        } catch (Exception e) {
            System.err.print("获取token失败！");
            e.printStackTrace(System.err);
        }
        return null;
    }
}