问题描述

想做一个java b站的第三方登录，请问有什么比较方便的jar包可以引用？

如题，还是说只能用httpurlconnection？然后我用wireshark试图抓account.bilibili.com/login的数据包，结果死活抓不到post的包。。。感觉如果没有post包的话没办法进行数据分析。。。就没办法继续写下去了。。。由于是第一次设计，所以可能思路会有点问题，如果有做过类似程序的前辈感谢给出一点点建议。。。。谢谢！

import java.net.URL;
import java.net.HttpURLConnection;
import java.io.InputStream;
import java.io.BufferedInputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.BufferedReader;

public class Answer {

    private static final String FrontPageURL = "http://www.bilibili.com";
    private static final String LoginPageURL = "http://account.bilibili.com/login";
    private static final String AnswerPageURL = "http://www.bilibili.com/account/invite_quiz";

    public static void main(String argv[]) throws Exception {

        Login();

    }

    public static void Login() {
        URL url = null;
        HttpURLConnection httpurlconnection = null;

        // 就是这里，如果抓不到post数据包，就不知道b站的login格式是什么样的！！
        String strPost = "";

        try{
            url = new URL(LoginPageURL);
            httpurlconnection = (HttpURLConnection) url.openConnection();
            httpurlconnection.setRequestProperty("User-Agent", "Internet Explorer");
            httpurlconnection.setRequestProperty("Host", "account.bilibili.com");     

            httpurlconnection.setFollowRedirects(true);
            httpurlconnection.setInstanceFollowRedirects(true);
            httpurlconnection.setDoOutput(true);
            httpurlconnection.setDoInput(true);
            httpurlconnection.setUseCaches(false);
            httpurlconnection.setAllowUserInteraction(false);
            httpurlconnection.setRequestMethod("POST");
            httpurlconnection.addRequestProperty("Accept",
            "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/msword, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/x-silverlight, */*");
            httpurlconnection.setRequestProperty("Accept-Language", "zh-cn");
            httpurlconnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            httpurlconnection.setRequestProperty("Accept-Encoding", "gzip, deflate");
            httpurlconnection.setRequestProperty("Content-Length", strPost.length()+ "");
            httpurlconnection.setRequestProperty("Connection", "Keep-Alive");
            httpurlconnection.setRequestProperty("Cache-Control", "no-cache");
            httpurlconnection.getOutputStream().write(strPost.getBytes());
            httpurlconnection.getOutputStream().flush();
            httpurlconnection.getOutputStream().close();
            httpurlconnection.connect();

            httpurlconnection.disconnect();
            InputStream urlStream = httpurlconnection.getInputStream();
            BufferedInputStream buff = new BufferedInputStream(urlStream);
            Reader r = new InputStreamReader(buff, "utf8");
            BufferedReader br = new BufferedReader(r);
            StringBuffer strHtml = new StringBuffer("");
            String strLine = null;

            while ((strLine = br.readLine()) != null){
                strHtml.append(strLine + "rn");
            }
            System.out.print(strHtml.toString());

        }catch(Exception e){
            e.printStackTrace();
        }finally {
            if (httpurlconnection != null)
                httpurlconnection.disconnect();
        }
    }

}

解决方案

一般都是去官方照demo、sdk、和说明文档