网易邮件采集器（3）

采集邮件

（一）创建Constants类 ，存储文件路径，文件名，休眠时间以及收件箱，邮件的URL

（二）登录

public void login(String userName, String password) {
        Map<String, String> params = new HashMap<String, String>();
        params.put("ds", "mail163_letter");
        params.put("from", "web");
        params.put("funcid", "loginone");
        params.put("iframe", "1");
        params.put("language", "-1");
        params.put("passtype", "1");
        params.put("product", "mail163");
        params.put("net", "c");
        params.put("stype", "-1");
        params.put("race", "167_158_146_gz");
        params.put("uid", userName + "@163.com");
        params.put("savelogin", "0");
        params.put("url2", "http://mail.163.com/errorpage/error163.htm");
        params.put("username", userName);
        params.put("password", password);

        String s = httpUtil.post(Constants.loginURL, params).trim();
        // System.out.println(s);
        int i = s.indexOf("http://mail.163.com/");
        String mainUrl = s.substring(i, s.indexOf("\";</script>"));
        httpUtil.get(mainUrl);
        sid = httpUtil.getCookie("Coremail.sid");
        // System.out.println("==============sid:" + sid);
        httpUtil.printCookies();

    }

（三）抓取邮件

 （1）读取收件箱信息

Map<String, String> params = new HashMap<String, String>();
        params.put("var", "<?xml version=\"1.0\"?>" + "<object>" + "<int name=\"fid\">1</int>"
                + "<string name=\"order\">date</string>" + "<boolean name=\"desc\">true</boolean>"
                + "<int name=\"limit\">20</int>" + "<int name=\"start\">0</int>"
                + "<boolean name=\"skipLockedFolders\">false</boolean>" + "<boolean name=\"returnTag\">true</boolean>"
                + "<boolean name=\"returnTotal\">true</boolean>" + "</object>");
        result1 = httpUtil.post(Constants.mailBox + sid, params);

        // System.out.println(result1);

（2）读取邮件信息

Map<String, String> params2 = new HashMap<String, String>();
            result2 = httpUtil.post(Constants.mail + mg.getId(), params2);
            // System.out.println(result2);

（3）用jsoup解析信息，并存入list集合中

        Document d = Jsoup.parseBodyFragment(result1);
        List<MailGet> ls = new ArrayList<MailGet>();
        // MailGrab m = new MailGrab();
        int i = 0;

        Elements links = d.select("[name=\"id\"]");

        for (Element link : links) {
            MailGet mg = new MailGet(link.text());

            ls.add(mg);
            if (i == 0) {
                mid = mg.getId();
            }

            Document cm = Jsoup.parseBodyFragment(result2);
            String str = cm.body().text();
            mg = ls.get(i);
            mg.setNeirong(str);

            i++;
        }

links = d.select("[name=\"from\"]");
        i = 0;
        for (Element link : links) {

            MailGet mg = ls.get(i);

            mg.setFrom(link.text());

            i++;

        }
        links = d.select("[name=\"to\"]");
        i = 0;
        for (Element link : links) {
            MailGet mg = ls.get(i);

            mg.setTo(link.text());

            i++;

        }
        links = d.select("[name=\"sentDate\"]");
        i = 0;
        for (Element link : links) {
            MailGet mg = ls.get(i);

            mg.setSentDate(link.text());

            i++;

        }
        links = d.select("[name=\"receivedDate\"]");
        i = 0;
        for (Element link : links) {
            MailGet mg = ls.get(i);

            mg.setReceivedDate(link.text());

            i++;
        }
        links = d.select("[name=\"subject\"]");
        i = 0;
        for (Element link : links) {

            MailGet mg = ls.get(i);
            mg.setSubject(link.text());

            i++;

        }

（4）遍历集合，得到邮件的发件人，收件人，发送时间，接收时间，内容等信息，并存储邮件

for (MailGet mg : ls) {
            // 存
            try {
                File fa = new File(Constants.midPath, Constants.midFileName);
                if (!fa.exists()) {
                    fa.createNewFile();
                }
                FileReader fr = new FileReader(fa);
                char[] a = new char[1024];
                String str = "";
                int j = 0;
                while ((j = fr.read(a)) > 0) {
                    str += new String(a, 0, j);
                }
                // System.out.println(str + mg.getId());

                fr.close();
                if (str.equals(mg.getId())) {
                    break;
                } else {

                    System.out.println(mg);
                    
                    File fi = new File(Constants.youjianPath,
                            mg.getReceivedDate().replace(":", "").replace("-", "") + ".json");

                    if (!fi.exists()) {
                        fi.createNewFile();
                    }

                    FileWriter fw = new FileWriter(fi);
                    fw.write(JSON.toJSONString(mg));

                    fw.close();
                    i++;

                }
            } catch (Exception e) {
                e.printStackTrace();
            }