使用HTTP Components - Client 模拟浏览器发送请求

。。。
。。。
。。。

import java.io.InputStream;
import java.net.URI;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import org.apache.commons.io.IOUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
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.HttpPost;
import org.apache.http.client.protocol.ClientContext;
import org.apache.http.client.utils.URIUtils;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.impl.client.BasicCookieStore;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.SingleClientConnManager;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.CoreConnectionPNames;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.HttpContext;

public class Main {

    public static void main(String[] args) throws Exception {
        TrustManager easyTrustManager = new X509TrustManager() {

            public void checkClientTrusted(X509Certificate[] chain,
                    String authType) throws CertificateException {
                System.out.println("checkClientTrusted()...");
            }

            public void checkServerTrusted(X509Certificate[] chain,
                    String authType) throws CertificateException {
                System.out.println("checkServerTrusted()...");
            }

            public X509Certificate[] getAcceptedIssuers() {
                return null;
            }
        };

        // ================================================================
        // 配置连接上下文
        CookieStore cookieStore = new BasicCookieStore();
        HttpContext localContext = new BasicHttpContext();
        localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore);

        SSLContext sslcontext = SSLContext.getInstance("TLS");
        sslcontext.init(null, new TrustManager[] { easyTrustManager }, null);

        SSLSocketFactory sf = new SSLSocketFactory(sslcontext,
                SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);

        Scheme https = new Scheme("htt  ps", 443, sf);
        SchemeRegistry sr = new SchemeRegistry();
        sr.register(https);
        localContext.setAttribute(ClientContext.SCHEME_REGISTRY, sr);

        // ================================================================
        // 配置 HttpClient
        ClientConnectionManager cm = new SingleClientConnManager();
        HttpClient httpclient = new DefaultHttpClient(cm);

        // 配置超时
        httpclient.getParams().setIntParameter(CoreConnectionPNames.SO_TIMEOUT,
                60 * 1000);
        httpclient.getParams().setIntParameter(
                CoreConnectionPNames.CONNECTION_TIMEOUT, 60 * 1000);

        // ================================================================
        // 准备POST请求。
        // URL上的参数
        List<NameValuePair> getParams = new ArrayList<NameValuePair>();
        getParams.add(new BasicNameValuePair("r", Long.toString(System
                .currentTimeMillis())));

        URI uri = URIUtils.createURI("https", "auth.alipay.com", -1,
                "/login/index.htm", URLEncodedUtils.format(getParams, "GBK"),
                null);

        HttpPost httpPost = new HttpPost(uri);

        // POST提交的参数
        List<NameValuePair> postParams = new ArrayList<NameValuePair>();
        postParams.add(new BasicNameValuePair("logonId", "[e-mail]"));
        postParams.add(new BasicNameValuePair("password", "91741"));
        httpPost.setEntity(new UrlEncodedFormEntity(postParams, "GBK"));

        // ================================================================
        // 结合以上三者，执行请求并获取结果
        HttpResponse response = httpclient.execute(httpPost, localContext);

        // ================================================================
        // 解析结果
        HttpEntity entity = response.getEntity();
        InputStream instream = entity.getContent();
        String html = IOUtils.toString(instream);

        // PS: 大家可以使用 JSoup 来解析网页饿，Very easy~
        System.out.println(response);
        System.out.println("---------------------------------");
        System.out.println(html);
    }
}