java 使用httpclient模拟登录

httpclient4.2.1
httpmime4.4





importjava.io.BufferedReader;

importjava.io.File;

importjava.io.FileOutputStream;

importjava.io.IOException;

importjava.io.InputStream;

importjava.io.InputStreamReader;

importjava.util.ArrayList;

importjava.util.List;

importorg.apache.http.HttpEntity;

importorg.apache.http.HttpResponse;

importorg.apache.http.NameValuePair;

importorg.apache.http.client.CookieStore;

importorg.apache.http.client.HttpClient;

importorg.apache.http.client.entity.UrlEncodedFormEntity;

importorg.apache.http.client.methods.HttpGet;

importorg.apache.http.client.methods.HttpPost;

importorg.apache.http.cookie.Cookie;

importorg.apache.http.impl.client.AbstractHttpClient;

importorg.apache.http.impl.client.BasicCookieStore;

importorg.apache.http.impl.client.DefaultHttpClient;

importorg.apache.http.impl.cookie.BasicClientCookie;

importorg.apache.http.message.BasicNameValuePair;

importorg.apache.http.util.EntityUtils;

importorg.junit.Test;

 

publicclass HttpClientLoginTest {

    @Test

    // 获取一个HTML页面的内容，一个简单的get应用

    publicvoid grabPageHTML() throwsException {

        HttpClient httpclient = newDefaultHttpClient();

        HttpGet httpget = newHttpGet("http://www.baidu.com/");

        HttpResponse response = httpclient.execute(httpget);

        HttpEntity entity = response.getEntity();

        String html = EntityUtils.toString(entity, "GBK");

 

        // releaseConnection等同于reset，作用是重置request状态位，为下次使用做好准备。

        // 其实就是用一个HttpGet获取多个页面的情况下有效果；否则可以忽略此方法。

        httpget.releaseConnection();

 

        System.out.println(html);

    }

 

    // 下载一个文件到本地（本示范中为一个验证码图片）

    @Test

    publicvoid downloadFile() throwsException {

        String url = "http://www.lashou.com/account/captcha";

        File dir = newFile("D:\\TDDOWNLOAD");

        if(!dir.exists()) {

            dir.mkdirs();

        }

        String destfilename = "D:\\TDDOWNLOAD\\yz.png";

        HttpClient httpclient = newDefaultHttpClient();

        HttpGet httpget = newHttpGet(url);

        File file = newFile(destfilename);

        if(file.exists()) {

            file.delete();

        }

 

        HttpResponse response = httpclient.execute(httpget);

        HttpEntity entity = response.getEntity();

        InputStream in = entity.getContent();

        try{

            FileOutputStream fout = newFileOutputStream(file);

            intl = -1;

            byte[] tmp = newbyte[2048];

            while((l = in.read(tmp)) != -1) {

                fout.write(tmp);

            }

            fout.close();

        }finally{

            // 在用InputStream处理HttpEntity时，切记要关闭低层流。

            in.close();

        }

 

        httpget.releaseConnection();

    }

 

    @Test

    // Post方法，模拟表单提交参数登录到网站。

    // 结合了上面两个方法：grabPageHTML/downloadFile，同时增加了Post的代码。

    publicvoid login2Lashou() throwsException {

        // 第一步：先下载验证码到本地

        String url = "http://www.lashou.com/account/captcha";

        String destfilename = "D:\\TDDOWNLOAD\\yz.png";

        HttpClient httpclient = newDefaultHttpClient();

        HttpGet httpget = newHttpGet(url);

        File file = newFile(destfilename);

        if(file.exists()) {

            file.delete();

        }

 

        HttpResponse response = httpclient.execute(httpget);

        HttpEntity entity = response.getEntity();

        InputStream in = entity.getContent();

        try{

            FileOutputStream fout = newFileOutputStream(file);

            intl = -1;

            byte[] tmp = newbyte[2048];

            while((l = in.read(tmp)) != -1) {

                fout.write(tmp);

            }

            fout.close();

        }finally{

            in.close();

        }

        httpget.releaseConnection();

 

        // 第二步：用Post方法带若干参数尝试登录，需要手工输入下载验证码中显示的字母、数字

        BufferedReader br = newBufferedReader(newInputStreamReader(System.in));

        System.out.println("请输入下载下来的验证码中显示的数字...");

        String yan = br.readLine();

 

        HttpPost httppost = newHttpPost("http://www.lashou.com/account/login/");

        List<NameValuePair> params = newArrayList<NameValuePair>();

        params.add(newBasicNameValuePair("user_id","testuser007"));

        params.add(newBasicNameValuePair("pwd","asdfg123"));

        params.add(newBasicNameValuePair("yan", yan));

        params.add(newBasicNameValuePair("save_user","on"));

        params.add(newBasicNameValuePair("save_pwd","on"));

        params.add(newBasicNameValuePair("sub","登录"));

        httppost.setEntity(newUrlEncodedFormEntity(params));

 

        response = httpclient.execute(httppost);

        entity = response.getEntity();

        // 在这里可以用Jsoup之类的工具对返回结果进行分析，以判断登录是否成功

        String postResult = EntityUtils.toString(entity, "GBK");

        // 我们这里只是简单的打印出当前Cookie值以判断登录是否成功。

        CookieStore cookieStore = ((AbstractHttpClient) httpclient).getCookieStore();

        List<Cookie> cookies = ((AbstractHttpClient) httpclient)

                .getCookieStore().getCookies();

        for(Cookie cookie : cookies)

            System.out.println("cookie begin***\n" + cookie + "\n cookie end");

        httppost.releaseConnection();

 

        // 第三步：打开会员页面以判断登录成功（未登录用户是打不开会员页面的）

        String memberpage = "http://www.lashou.com/account/orders/";

        httpget = newHttpGet(memberpage);

        response = httpclient.execute(httpget); // 必须是同一个HttpClient！

        entity = response.getEntity();

        String html = EntityUtils.toString(entity, "GBK");

        httpget.releaseConnection();

 

        System.out.println(html);

    }

 

    @Test

    publicvoid testSystemIn() throwsIOException {

        BufferedReader reader = newBufferedReader(newInputStreamReader(

                System.in));

        String hello = reader.readLine();

        System.out.println(hello);

    }

 

    @Test

    // 设置已获取的cookie，查看需要登录后才能查看的页面

    publicvoid testGetinfoByLoginCookie() throwsException, IOException {

        DefaultHttpClient httpclient = newDefaultHttpClient();

        CookieStore cookieStore = newBasicCookieStore();

        BasicClientCookie cookie1 = newBasicClientCookie("ThinkID","5s4tmqem08gh091v3egoa7sqf7");

        cookie1.setDomain(".lashou.com");

        BasicClientCookie cookie2 = newBasicClientCookie("city_b","2419");

        cookie2.setDomain("lashou.com");

        BasicClientCookie cookie3 = newBasicClientCookie("client_key","1425104707wd157b4b24ff70adcb875a");

        cookie3.setDomain("lashou.com");

        BasicClientCookie cookie4 = newBasicClientCookie("login_name2","testuser007");

        cookie4.setDomain("lashou.com");

        BasicClientCookie cookie5 = newBasicClientCookie("pwd2","4c88a4062736c26572d3ec382868fa2b");

        cookie5.setDomain("lashou.com");

        cookieStore.addCookie(cookie1);

        cookieStore.addCookie(cookie2);

        cookieStore.addCookie(cookie3);

        cookieStore.addCookie(cookie4);

        cookieStore.addCookie(cookie5);

        List<Cookie> cookies = newArrayList<Cookie>();

        httpclient.setCookieStore(cookieStore);

         

        List<Cookie> cookieList = httpclient.getCookieStore().getCookies();

        for(inti=0;i<cookieList.size();i++){

            System.out.println("cookie"+i+":"+cookieList.get(i));

        }

         

        // 设置已登录的cookie

        String memberpage = "http://www.lashou.com/account/orders/";

        HttpGet httpget = newHttpGet(memberpage);

        HttpResponse response = httpclient.execute(httpget); // 必须是同一个HttpClient！

        HttpEntity entity = response.getEntity();

        entity = response.getEntity();

        String html = EntityUtils.toString(entity, "GBK");

        httpget.releaseConnection();

 

        System.out.println(html);

    }

}