【教程】模拟登陆百度之Java代码版

/**

 * [File]

 * EmulateLoginBaidu.java

 *

 * [Function]

 * Use Java code to emulate login baidu

 *

 * 【教程】模拟登陆百度之Java代码版

 * http://www.crifan.com/emulate_login_baidu_use_java_code

 *

 * [Version]

 * v1.0, 2013-09-17

 *

 * [Note]

 * 1. need add apache http lib:

 * 【已解决】Eclipse的java代码出错：The import org.apache cannot be resolved

 * http://www.crifan.com/java_eclipse_the_import_org_apache_cannot_be_resolved/

 * 2.need crifanLib.java

 * http://code.google.com/p/crifanlib/source/browse/trunk/java/crifanLib.java

 *

 * [History]

 * [v1.0]

 * 1. initial version, finally successfully emulate login baidu using java code.

 */

package com.login4baidu;

//import java.io.IOException;

import java.util.ArrayList;

//import java.util.Calendar;

//import java.util.Date;

//import java.util.GregorianCalendar;

import java.util.HashMap;

//import java.util.Hashtable;

import java.util.List;

//import java.util.Map;

import java.util.Scanner;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import org.apache.http.HttpResponse;

import org.apache.http.NameValuePair;

import org.apache.http.cookie.Cookie;

//import org.apache.http.impl.cookie.BasicClientCookie;

//import org.apache.http.impl.cookie.BasicClientCookie2;

import org.apache.http.message.BasicNameValuePair;

//import crifanLib;

/**

 * @author CLi

 *

 */

public class EmulateLoginBaidu {

    static crifanLib crl;

    /**

     * @param args

     */

    public static void main(String[] args) {

        crl = new crifanLib();

        // TODO Auto-generated method stub

        EmulateLoginBaiduUsingJava();

    }

    // emulate login baidu using java code

    public static void EmulateLoginBaiduUsingJava()

    {

        System.out.println("============ 程序说明 ============");

        System.out.println("功能：本程序是用来演示使用Java代码去实现模拟登陆百度");

        System.out.println("注意事项：部分百度账户，在登陆时会出现：");

        System.out.println("1.部分百度账户，在登陆时会出现：");

        System.out.println("系统检测到您的帐号疑似被盗，存在安全风险。请尽快修改密码。");

        System.out.println("此时，本程序，无法成功模拟登陆，请自行按照提示去修改密码后，就可以了。");

        boolean bLoginBaiduOk = false;

        List<Cookie> curCookieList;

        //step1: login baidu, got cookie BAIDUID

        System.out.println("====== 步骤1：获得BAIDUID的Cookie ======");

        String strTokenValue = "";

        boolean bGotCookieBaiduid = false;

        String strBaiduUrl = "http://www.baidu.com/";

        HttpResponse baiduResp = crl.getUrlResponse(strBaiduUrl);

        curCookieList =crl.getCurCookieStore().getCookies();

        crl.dbgPrintCookies(curCookieList, strBaiduUrl);

        for(Cookie ck : curCookieList)

        {

            String cookieName = ck.getName();

            if(cookieName.equals("BAIDUID"))

            {

                bGotCookieBaiduid = true;

            }

        }

        if (bGotCookieBaiduid)

        {

            System.out.println("正确：已找到cookie BAIDUID");

        }

        else

        {

            System.out.println("错误：没有找到cookie BAIDUID ！");

        }

        //step2: login, pass paras, extract resp cookie

        System.out.println("====== 步骤2：提取login_token ======");

        boolean bExtractTokenValueOK = false;

        if(bGotCookieBaiduid)

        {

            //https://passport.baidu.com/v2/api/?getapi&class=login&tpl=mn&tangram=true

            String getapiUrl = "https://passport.baidu.com/v2/api/?getapi&class=login&tpl=mn&tangram=true";

            String getApiRespHtml = crl.getUrlRespHtml(getapiUrl);

            curCookieList =crl.getCurCookieStore().getCookies();

            crl.dbgPrintCookies(curCookieList, getapiUrl);

            //bdPass.api.params.login_token='3cf421493884e0fe9080593d05f4744f';

            Pattern tokenValP = Pattern.compile("bdPass\\.api\\.params\\.login_token='(?<tokenVal>\\w+)';");

            Matcher tokenValMatcher = tokenValP.matcher(getApiRespHtml);

            //boolean foundTokenValue = tokenValMatcher.matches(); // will not match, but can search to find it

            boolean foundTokenValue = tokenValMatcher.find();

            if(foundTokenValue)

            {

                strTokenValue = tokenValMatcher.group("tokenVal"); //3cf421493884e0fe9080593d05f4744f

                System.out.println("正确：找到 bdPass.api.params.login_token=" + strTokenValue);

                bExtractTokenValueOK = true;

            }

            else

            {

                System.out.println("错误：没找到bdPass.api.params.login_token !");

            }

        }

        //step3: verify returned cookies

        if (bGotCookieBaiduid && bExtractTokenValueOK)

        {

            System.out.println("======步骤3：登陆百度并检验返回的Cookie ======");

            /*

            //Note:

            //here, has verify, not manually update some cookie's domain and expiry

            //also can emulate baidu successfully

            //do some workaround to makesure here cookie H_PS_PSSID not expire

            //[version: 0][name: H_PS_PSSID][value: 3359_3341_2776_1424_2981][domain: .baidu.com][path: /][expiry: null]

            //Thu Sep 17 14:22:08 CST 2043

            //Date newExpiryDate = new Date(2043, 9, 17);

            Date newExpiryDate = new Date(143, 9, 17);

            //Calendar newExpiryCalendar = new GregorianCalendar(2043, 9, 17, 14, 22, 8);

            BasicClientCookie hPsPssidCookie = null;

            BasicClientCookie dbsvrtmCookie = null;

            //int hPsPssidCookieIdx = 0;

            curCookieList = crl.getCurCookieList();

            for(Cookie ck : curCookieList)

            {

                if(ck.getName().equalsIgnoreCase("H_PS_PSSID"))

                {

                    //hPsPssidCookieIdx = curCookieList.indexOf(ck);

                    hPsPssidCookie = (BasicClientCookie) ck;

                    hPsPssidCookie.setExpiryDate(newExpiryDate);

                    ck = hPsPssidCookie;

                    //break;

                }

                if(ck.getName().equalsIgnoreCase("BDSVRTM"))

                {

                    dbsvrtmCookie = (BasicClientCookie) ck;

                    dbsvrtmCookie.setDomain(".baidu.com");

                    dbsvrtmCookie.setExpiryDate(newExpiryDate);

                    ck = dbsvrtmCookie;

                    //break;

                }

            }

            crl.setCurCookieList(curCookieList);

            */

            String staticPageUrl = "http://www.baidu.com/cache/user/html/jump.html";

            List<NameValuePair> postDict = new ArrayList<NameValuePair>();

            //ArrayList<NameValuePair> headerDict = new ArrayList<NameValuePair>();

            //postDict.add(new BasicNameValuePair("ppui_logintime", ""));

            postDict.add(new BasicNameValuePair("charset", "utf-8"));

            //postDict.add(new BasicNameValuePair("codestring", ""));

            postDict.add(new BasicNameValuePair("token", strTokenValue));

            postDict.add(new BasicNameValuePair("isPhone", "false"));

            postDict.add(new BasicNameValuePair("index", "0"));

            //postDict.add(new BasicNameValuePair("u", ""));

            //postDict.add(new BasicNameValuePair("safeflg", "0"));

            postDict.add(new BasicNameValuePair("staticpage", staticPageUrl));

            postDict.add(new BasicNameValuePair("loginType", "1"));

            postDict.add(new BasicNameValuePair("tpl", "mn"));

            postDict.add(new BasicNameValuePair("callback", "parent.bdPass.api.login._postCallback"));

            //get input baidu username and password

            String strBaiduUsername = "";

            String strBaiduPassword = "";

            Scanner inputReader = new Scanner(System.in);

            System.out.println("Please Enter Your:" );

            System.out.println("Baidu Username:" );

            strBaiduUsername = inputReader.nextLine();

            //System.out.println("You Entered Username=" + strBaiduUsername);

            System.out.println("Baidu Password:" );

            strBaiduPassword = inputReader.nextLine();

            //System.out.println("You Entered Password=" + strBaiduPassword);

            inputReader.close();

            postDict.add(new BasicNameValuePair("username", strBaiduUsername));

            postDict.add(new BasicNameValuePair("password", strBaiduPassword));

            postDict.add(new BasicNameValuePair("verifycode", ""));

            postDict.add(new BasicNameValuePair("mem_pass", "on"));

            String baiduMainLoginUrl = "https://passport.baidu.com/v2/api/?login";

            String loginBaiduRespHtml = crl.getUrlRespHtml(baiduMainLoginUrl, null, postDict);

            //Map cookieNameDict = new Map();

            //Map cookieNameDict = new Hashtable();

            HashMap<Object, Boolean> cookieNameDict = new HashMap<Object, Boolean>();

            cookieNameDict.put("BDUSS", false);

            cookieNameDict.put("PTOKEN", false);

            cookieNameDict.put("STOKEN", false);

            //Set-Cookie: SAVEUSERID=deleted; expires=Mon, 17-Sep-2012 09:45:03 GMT; path=/; domain=passport.baidu.com; httponly,

            //cookieNameDict.put("SAVEUSERID", false);

            curCookieList = crl.getCurCookieList();

            for(Object objCookieName : cookieNameDict.keySet().toArray())

            {

                String strCookieName = objCookieName.toString();

                for(Cookie ck: curCookieList)

                {

                    if(strCookieName.equalsIgnoreCase(ck.getName()))

                    {

                        cookieNameDict.put(strCookieName, true);

                    }

                }

            }

            boolean bAllCookiesFound = true;

            for (Object  objFoundCurCookie : cookieNameDict.values())

            {

                bAllCookiesFound = bAllCookiesFound && Boolean.parseBoolean(objFoundCurCookie.toString());

            }

            bLoginBaiduOk = bAllCookiesFound;

            if (bLoginBaiduOk)

            {

                System.out.println("成功模拟登陆百度首页！" );

            }

            else

            {

                System.out.println("模拟登陆百度首页 失败！");

                System.out.println("所返回的HTML源码为：" + loginBaiduRespHtml);

            }

        }

        return;

    }

}

/**

 * [File]

 * crifanLib.java

 *

 * [Function]

 * 1. implement crifan's common functions

 * https://code.google.com/p/crifanlib/source/browse/trunk/java/crifanLib.java

 *

 * [Version]

 * v2.0

 *

 * [Contact]

 * http://www.crifan.com/about/me/

 *

 * [Note]

 * 1. need add apache http lib:

 * 【已解决】Eclipse的java代码出错：The import org.apache cannot be resolved

 * http://www.crifan.com/java_eclipse_the_import_org_apache_cannot_be_resolved/

 *

 * [History]

 * [v2.0, 2013-09-17]

 * 1. update getUrlResponse and getUrlRespHtml

 * 2. add getCurCookieList, getCurCookieStore, setCurCookieStore, setCurCookieList

 *

 * [v1.4,  2013-07-17]

 * 1. add calcTimeStart, calcTimeEnd

 * 2. add dateToString, outputStringToFile

 *

 * [v1.0]

 * 1. add http related func and regex related func

 */

package com.login4baidu;

import java.io.File;

//import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStream;

//import java.net.CookieManager;

//import java.net.CookiePolicy;

//import java.net.HttpCookie;

import java.text.SimpleDateFormat;

//import java.util.Calendar;

import java.util.Date;

//import java.util.GregorianCalendar;

import java.util.HashMap;

import java.util.List;

//import java.util.Map;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import org.apache.http.HttpEntity;

import org.apache.http.HttpResponse;

import org.apache.http.HttpStatus;

import org.apache.http.NameValuePair;

import org.apache.http.client.ClientProtocolException;

import org.apache.http.client.CookieStore;

//import org.apache.http.client.HttpClient;

import org.apache.http.client.entity.UrlEncodedFormEntity;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.client.methods.HttpUriRequest;

import org.apache.http.client.params.ClientPNames;

import org.apache.http.client.protocol.ClientContext;

import org.apache.http.cookie.Cookie;

import org.apache.http.impl.client.BasicCookieStore;

import org.apache.http.impl.client.DefaultHttpClient;

//import org.apache.http.impl.cookie.BasicClientCookie;

import org.apache.http.params.BasicHttpParams;

import org.apache.http.params.CoreConnectionPNames;

//import org.apache.http.params.HttpConnectionParams;

//import org.apache.http.params.HttpProtocolParams;

//import org.apache.http.params.HttpParams;

//import org.apache.http.params.DefaultedHttpParams;

import org.apache.http.params.CoreProtocolPNames;

import org.apache.http.protocol.BasicHttpContext;

import org.apache.http.protocol.HttpContext;

import org.apache.http.util.EntityUtils;

//for android:

//import crifan.com.downloadsongtastemusic.R;

//import android.os.Environment;

//import android.widget.EditText;

//import android.app.Activity;

public class crifanLib {

    private CookieStore gCurCookieStore = null;

    //private HashMap<Object, Object> calcTimeKeyDict;

    private HashMap<String, Long> calcTimeKeyDict;

    //private Map<String, Long> calcTimeKeyDict;

    //IE7

    private static final String constUserAgent_IE7_x64 = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.3; .NET4.0C; .NET4.0E)";

    //IE8

    private static final String constUserAgent_IE8_x64 = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.3; .NET4.0C; .NET4.0E";

    //IE9

    private static final String constUserAgent_IE9_x64 = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)"; // x64

    private static final String constUserAgent_IE9_x86 = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"; // x86

    //Chrome

    private static final String constUserAgent_Chrome = "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.99 Safari/533.4";

    //Mozilla Firefox

    private static final String constUserAgent_Firefox = "Mozilla/5.0 (Windows; U; Windows NT 6.1; rv:1.9.2.6) Gecko/20100625 Firefox/3.6.6";

    private static String gUserAgent = "";

    public crifanLib()

    {

        gUserAgent = constUserAgent_IE8_x64;

        gCurCookieStore = new BasicCookieStore();

        calcTimeKeyDict = new HashMap<String, Long>();

    }

    /** start calculate time */

    public long calcTimeStart(String uniqueKey)

    {

        long startMilliSec = 0;

        startMilliSec = System.currentTimeMillis(); //

        calcTimeKeyDict.put(uniqueKey, startMilliSec); //{load_dd_file=1373525642597}

        return startMilliSec;

    }

    /** end calculate time */

    public long calcTimeEnd(String uniqueKey)

    {

        long endMilliSec = System.currentTimeMillis(); //

        long elapsedMilliSec = 0;

        if(calcTimeKeyDict.containsKey(uniqueKey))

        {

            long startMilliSec = calcTimeKeyDict.get(uniqueKey); //

            elapsedMilliSec = endMilliSec - startMilliSec; //

        }

        return elapsedMilliSec;

    }

    /* format date value into string */

    public String dateToString(Date date, String format)

    {

        SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format);

        String datetimeStr =simpleDateFormat.format(date);  //2013-07-08_033034

        return datetimeStr;

    }

    /* output string into file */

    public boolean outputStringToFile(String strToOutput, String fullFilename)

    {

        boolean ouputOk = true;

        File newTextFile = new File(fullFilename);

        FileWriter fw;

        try {

            fw = new FileWriter(newTextFile);

            fw.write(strToOutput);

            fw.close();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            //e.printStackTrace();

            ouputOk = false;

        }

        return ouputOk;

    }

    public void dbgPrintCookies(List<Cookie> cookieList, String url)

    {

        if((null != url) && (!url.isEmpty()))

        {

            System.out.println("Cookies for " + url);

        }

        for(Cookie ck : cookieList)

        {

            System.out.println(ck);

        }

    }

    public void dbgPrintCookies(CookieStore cookieStore)

    {

        dbgPrintCookies(cookieStore, null);

    }

    public void dbgPrintCookies(CookieStore cookieStore, String url)

    {

        List<Cookie> cookieList = cookieStore.getCookies();

        dbgPrintCookies(cookieList, url);

    }

    public void dbgPrintCookies(List<Cookie> cookieList)

    {

        dbgPrintCookies(cookieList, null);

    }

    public CookieStore getCurCookieStore()

    {

        return gCurCookieStore;

    }

    public List<Cookie> getCurCookieList()

    {

        if(null != gCurCookieStore)

        {

            return gCurCookieStore.getCookies();

        }

        else

        {

            return null;

        }

    }

    public void setCurCookieStore(CookieStore newCookieStore)

    {

        gCurCookieStore = newCookieStore;

    }

    public void setCurCookieList(List<Cookie> newCookieList)

    {

        gCurCookieStore.clear();

        for(Cookie eachNewCk : newCookieList)

        {

            gCurCookieStore.addCookie(eachNewCk);

        }

    }

    /** Get response from url  */

    public HttpResponse getUrlResponse(

            String url,

            List<NameValuePair> headerDict,

            List<NameValuePair> postDict,

            int timeout

            )

    {

        // init

        HttpResponse response = null;

        HttpUriRequest request = null;

        DefaultHttpClient httpClient = new DefaultHttpClient();

        //HttpParams headerParams = new HttpParams();

        //HttpParams headerParams = new DefaultedHttpParams(headerParams, headerParams);

        //HttpParams headerParams = new BasicHttpParams();

        BasicHttpParams headerParams = new BasicHttpParams();

        //HttpConnectionParams.

        //default enable auto redirect

        headerParams.setParameter(CoreProtocolPNames.USER_AGENT, gUserAgent);

        headerParams.setParameter(ClientPNames.HANDLE_REDIRECTS, Boolean.TRUE);

        headerParams.setParameter(CoreConnectionPNames.SO_KEEPALIVE, Boolean.TRUE);

        if(postDict != null)

        {

            HttpPost postReq = new HttpPost(url);

            try{

                HttpEntity postBodyEnt = new UrlEncodedFormEntity(postDict);

                postReq.setEntity(postBodyEnt);

            }

            catch(Exception e){

                e.printStackTrace();

            }

            request = postReq;

        }

        else

        {

            HttpGet getReq = new HttpGet(url);

            request = getReq;

        }

        if(headerParams != null)

        {

            //HttpProtocolParams.setUserAgent(headerParams, gUserAgent);

            //headerParams.setHeader(HttpMethodParams.USER_AGENT, gUserAgent);

            request.setParams(headerParams);

        }

        //request.setHeader("User-Agent", gUserAgent);

        try{

            HttpContext localContext = new BasicHttpContext();

            localContext.setAttribute(ClientContext.COOKIE_STORE, gCurCookieStore);

            response = httpClient.execute(request, localContext);

            //response HeaderGroup value:

            //[Via: 1.1 SC-SZ-06, Connection: Keep-Alive, Proxy-Connection: Keep-Alive, Content-Length: 11006, Expires: Tue, 17 Sep 2013 01:43:44 GMT, Date: Tue, 17 Sep 2013 01:43:44 GMT, Content-Type: text/html;charset=utf-8, Server: BWS/1.0, Cache-Control: private, BDPAGETYPE: 1, BDUSERID: 0, BDQID: 0xaaa869770d8d5dcd, Set-Cookie: BDSVRTM=2; path=/, Set-Cookie: H_PS_PSSID=3361_2777_1465_2975_3109; path=/; domain=.baidu.com, Set-Cookie: BAIDUID=C0C2EAA4B1805EF21EE097E2C6A3D448:FG=1; expires=Tue, 17-Sep-43 01:43:44 GMT; path=/; domain=.baidu.com, P3P: CP=" OTI DSP COR IVA OUR IND COM "]

            //gCurCookieStore (formatted ouput) value:

            /*{

                [version: 0][name: BAIDUID][value: C0C2EAA4B1805EF21EE097E2C6A3D448:FG=1][domain: .baidu.com][path: /][expiry: Thu Sep 17 09:43:44 CST 2043]=java.lang.Object@55ba1c2b,

                [version: 0][name: BDSVRTM][value: 2][domain: www.baidu.com][path: /][expiry: null]=java.lang.Object@55ba1c2b,

                [version: 0][name: H_PS_PSSID][value: 3361_2777_1465_2975_3109][domain: .baidu.com][path: /][expiry: null]=java.lang.Object@55ba1c2b

            }*/

        } catch (ClientProtocolException cpe) {

            // TODO Auto-generated catch block

            cpe.printStackTrace();

        } catch (IOException ioe) {

            // TODO Auto-generated catch block

            ioe.printStackTrace();

        }

        return response;

    }

    /** Get response from url  */

    public HttpResponse getUrlResponse(String url)

    {

        return getUrlResponse(url, null, null, 0);

    }

    /** Get response html from url, headerDict, html charset, postDict */

    public String getUrlRespHtml(

                                String url,

                                List<NameValuePair> headerDict,

                                List<NameValuePair> postDict,

                                int timeout,

                                String htmlCharset

                                )

    {

        // init

        String respHtml = "";

        String defaultCharset = "UTF-8";

        if((null == htmlCharset) || htmlCharset.isEmpty())

        {

            htmlCharset = defaultCharset;

        }

        //init

        //HttpClient httpClient = new DefaultHttpClient();

        //DefaultHttpClient httpClient = new DefaultHttpClient();

        //HttpUriRequest request;

        //headerParams.setParameter(CoreProtocolPNames.HTTP_CONTENT_CHARSET, htmlCharset);

        try{

            HttpResponse response = getUrlResponse(url, headerDict, postDict, timeout);

            if(response.getStatusLine().getStatusCode()==HttpStatus.SC_OK){

                HttpEntity respEnt = response.getEntity();

                respHtml = EntityUtils.toString(respEnt, htmlCharset);

            }

        } catch (ClientProtocolException cpe) {

            // TODO Auto-generated catch block

            cpe.printStackTrace();

        } catch (IOException ioe) {

            // TODO Auto-generated catch block

            ioe.printStackTrace();

        }

        return respHtml;

    }

    public String getUrlRespHtml(String url, List<NameValuePair> headerDict, List<NameValuePair> postDict)

    {

        return getUrlRespHtml(url, headerDict, postDict, 0, "");

    }

    public String getUrlRespHtml(String url, String htmlCharset)

    {

        return getUrlRespHtml(url, null, null, 0, htmlCharset);

    }

    public String getUrlRespHtml(String url)

    {

        String defaulCharset = "UTF-8";

        return getUrlRespHtml(url, defaulCharset);

    }

    public interface UpdateProgressCallback

    {

        // This is just a regular method so it can return something or

        // take arguments if you like.

        public void updateProgress(long currentSize, long totalSize);

    }

    /**

     *  download file from file url

     * eg:

     * http://m5.songtaste.com/201212211424/2e8a8a85d93f56370d7fd96b5dc6ff23/5/5c/5cf23a97cef6fad6a464eb506c409dbd.mp3

     * with header: Referer=http://songtaste.com/

     *  */

    public Boolean downlodFile(String url, File fullFilename, List<NameValuePair> headerDict, UpdateProgressCallback updateProgressCallbak)

    {

        Boolean downloadOk = Boolean.FALSE;

        HttpResponse response = getUrlResponse(url, headerDict, null, 0);

        if(response.getStatusLine().getStatusCode()==HttpStatus.SC_OK){

            HttpEntity respEnt = response.getEntity();

            System.out.println("isChunked" + respEnt.isChunked());

            System.out.println("Streaming" + respEnt.isStreaming());

            Boolean isStream = respEnt.isStreaming();

            if(isStream){

                try {

                    InputStream fileInStream = respEnt.getContent();

                    FileOutputStream fileOutStream = new FileOutputStream(fullFilename);

                    long totalSize = respEnt.getContentLength();

                    byte[] tmpBuf = new byte[8192];

                    int bufLen = 0;

                    long downloadedSize = 0;

                    while( (bufLen = fileInStream.read(tmpBuf)) > 0 ) {

                        fileOutStream.write(tmpBuf,0, bufLen);

                        downloadedSize += bufLen;

                        //System.out.println(Long.toString((downloadedSize/totalSize)*100)+"%");

                        //System.out.println(Long.toString((downloadedSize*100)/totalSize)+"%");

                        updateProgressCallbak.updateProgress(downloadedSize, totalSize);

                    }

                    fileOutStream.close();

                    downloadOk = Boolean.TRUE;

                } catch (IllegalStateException e) {

                    // TODO Auto-generated catch block

                    e.printStackTrace();

                } catch (IOException e) {

                    // TODO Auto-generated catch block

                    e.printStackTrace();

                }

            }

        }

        return downloadOk;

    }

    /**

     *  none header version of downlodFile

     *  */

    public String downlodFile(String url, String fullFilename)

    {

        return downlodFile(url, fullFilename);

    }

    /** Extract single string from input whole string

     *    Note:

     * 1. input pattern should include one group, like 'xxx(xxx)xxx'

     * 2. output is in extractedStr

     *  */

    public Boolean extractSingleStr(String pattern, String extractFrom, int flags, StringBuilder extractedStr)

    {

        Pattern strP = Pattern.compile(pattern, flags);

        Matcher foundStr = strP.matcher(extractFrom);

        Boolean found = foundStr.find();

        if(found)

        {

            extractedStr.append(foundStr.group(1));

        }

        return found;

    }

    /**

     * None pattern version of  extractSingleStr

     * */

    public Boolean extractSingleStr(String pattern, String extractFrom, StringBuilder extractedStr)

    {

        return extractSingleStr(pattern, extractFrom, 0, extractedStr);

    }

}

正常，成功模拟登陆百度的输出为：

8.完整的Eclipse下面的代码下载：

EmulateLoginBaidu_java_2013-09-17_crifanLibVersion.7z

注意：

1.使用此项目，需要导入org.apache.http的库。

详见：

【已解决】Eclipse的java代码出错：The import org.apache cannot be resolved

2.部分百度账户，在登陆时会出现：

系统检测到您的帐号疑似被盗，存在安全风险。请尽快修改密码。

此时，本程序，无法成功模拟登陆，请自行按照提示去修改密码后，就可以了。

【总结】

java在处理http方面的库，相对来说，还是很不方便使用。

只能算是基本够用吧。

（转自：http://www.crifan.com/emulate_login_baidu_use_java_code/）

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