基於HttpUrlConnection登錄豆瓣網並發表說說

好吧，這是我出差回來沒任務的時候寫的，當時挺無聊的。個人又比較喜歡爬蟲這類腳本，寫出來純屬玩玩，大家可以參考參考

功能：登錄豆瓣，發表說說。

package douban;
import java.awt.FlowLayout;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.CookieHandler;
import java.net.CookieManager;
import java.net.CookieStore;
import java.net.HttpCookie;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import org.json.JSONObject;
/**
 * 上午無聊寫的豆瓣網登錄測試類
 * 使用方式：直接執行即可，或只修改static裏的參數，其它地方不需要修改
 * 參考範圍：爬蟲新手，大神莫噴
 * @author 默非默
 *
 */
public class DouBan {
    static String loginName = "[email protected]";  //登錄賬號

    static String password = "520xiao707789";   //登錄密碼

    static String username = "默非默"; // 用戶暱稱（非登錄名），根據用戶名稱來判斷是否登錄成功，可以是名稱中的一部分，如：默非默2016，可以寫默非默即可

    public static void main(String[] args) throws Exception {
        // 設置登錄頁面，用來獲取Cookie和得到驗證碼地址及token
        String index_1 = "https://www.douban.com/j/misc/captcha";
        // 設置Cookie管理器
        CookieManager manager = new CookieManager();
        CookieHandler.setDefault(manager);
        URL url = new URL(index_1);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        InputStream in = connection.getInputStream();

        byte[] data = new byte[in.available()];
        in.read(data);
        String html1 = new String(data);
        connection.disconnect();
        // 從上一地址返回內容中獲取驗證碼鏈接
        JSONObject json = new JSONObject(html1);
        String YZMurlstr = json.getString("url");
        // 連接驗證碼地址
        URL YZMurl = new URL("https:" + YZMurlstr);
        HttpURLConnection conn = (HttpURLConnection) YZMurl.openConnection();
        InputStream in2 = YZMurl.openConnection().getInputStream();
        // 控制檯輸入驗證碼，並返回。
        String inCode = outCode(in2);
        conn.disconnect();
        // 開始登錄
        URL logUrl = new URL("https://accounts.douban.com/login");
        conn = (HttpURLConnection) logUrl.openConnection();
        conn.setRequestMethod("POST");// 提交模式
        conn.setDoOutput(true);// 是否輸入參數
        Map<String, String> map = new HashMap<String, String>();
        map.put("source", "None");
        map.put("redir", "https://www.douban.com/");
        map.put("form_email", loginName);
        map.put("form_password", password);
        map.put("captcha-solution", inCode);
        map.put("captcha-id", json.getString("token"));
        map.put("login", "登錄");
        String parames = map.toString().replaceAll(", ", "&").replace("{", "").replace("}", "");
        conn.getOutputStream().write(parames.getBytes());   // 發送參數到服務器
        InputStream inStream = conn.getInputStream();       // 提交併返回輸出流
        System.out.println(conn.getResponseCode());
        if (conn.getResponseCode() == 302) {
            String indexUrl = conn.getHeaderField("Location");
            conn.disconnect();
            conn = (HttpURLConnection) new URL(indexUrl).openConnection();
            String body = OutHtml(conn.getInputStream());
            if (body.contains(username)) {
                System.out.println("恭喜" + username + "，登錄成功302");
            }
        }
        if (conn.getResponseCode() == 200) {
            String body = OutHtml(inStream);
            if (body.contains(username)) {
                System.out.println("恭喜" + username + "，登錄成功200");
            }
        }
        // 打印Cookie
        outCookie(manager);
        conn.disconnect();
        while (true){
            System.out.print("輸入你想發表的說說：");
            Scanner scr = new Scanner(System.in);
            String conment = scr.nextLine();

            // 登錄成功後，發表說說
            conn = (HttpURLConnection) new URL("https://www.douban.com/")
                    .openConnection();
            conn.setRequestMethod("POST");// 提交模式
            conn.setDoOutput(true);// 是否輸入參數
            String sayParames = "ck=fGh2&comment=" + conment; // 構建表單
            conn.getOutputStream().write(sayParames.getBytes()); // 輸入參數
            InputStream sayInput = conn.getInputStream(); // 提交
            System.out.println(conn.getResponseCode());
            if (conn.getResponseCode() == 302) {
                String sayUrl2 = conn.getHeaderField("Location");
                conn.disconnect();
                conn = (HttpURLConnection) new URL(sayUrl2).openConnection();
                String body2 = OutHtml(conn.getInputStream());
                if (body2.contains(conment)) {
                    System.out.println(conment + "  發表成功");
                } else {
                    System.out.println("發表失敗");
                }
            }
            if (conn.getResponseCode() == 200) {
                String body2 = OutHtml(sayInput);
                if (body2.contains(conment)) {
                    System.out.println(conment + "  發表成功");
                } else {
                    System.out.println("發表失敗");
                }
            }
        }
    }
    // 得到並彈窗顯示驗證碼，以及在控制檯輸入
    private static String outCode(InputStream in) {
        try {
            FileOutputStream baos = new FileOutputStream(new File("d:/YZM.jpg"));
            byte[] image = new byte[in.available()];
            in.read(image);
            baos.write(image);
            baos.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        JFrame frame = new JFrame();
        frame.setVisible(false);
        frame.setBounds(300, 100, 300, 100);
        frame.setLayout(new FlowLayout());
        ImageIcon icon = new ImageIcon("D:/YZM.jpg");
        frame.add(new JLabel(icon));
        frame.setVisible(true);
        System.out.print("輸入你看到的驗證碼:");
        Scanner scr = new Scanner(System.in);
        String incode = scr.nextLine();
        System.out.println("驗證碼 : " + incode);
        frame.dispose();
        return incode;
    }
    // 打印Cookie
    private static void outCookie(CookieManager manager) {
        // 得到返回的cookie內容
        CookieStore cookieJar = manager.getCookieStore();
        List<HttpCookie> cookies = cookieJar.getCookies();
        for (HttpCookie cookie : cookies) {
            System.out.println(cookie);
        }
    }
    // 打印網頁內容
    private static String OutHtml(InputStream in) {
        StringBuffer result = new StringBuffer();
        try {
            InputStreamReader inr = new InputStreamReader(in);
            BufferedReader br = new BufferedReader(inr);
            String line;
            while ((line = br.readLine()) != null) {
                result.append(line + "<br>");
            }
            br.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return result.toString();
    }
}

坑爹啊，csdn上傳的2個包暫時顯示不了，分別是json和jsoup包。
上傳百度網盤了：http://pan.baidu.com/s/1qYCfPKw