httpclient https请求

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

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

import org.apache.commons.collections.MapUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
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.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.common.base.Joiner;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;

public class HttpUtil {
	private static final Logger LOG = LoggerFactory.getLogger(HttpUtil.class);

	public static DefaultHttpClient getHttpsClient() 
	{
	    try {
	        SSLContext ctx = SSLContext.getInstance("TLS");
	        X509TrustManager tm = new X509TrustManager() {

				@Override
				public void checkClientTrusted(
						java.security.cert.X509Certificate[] chain,
						String authType)
						throws java.security.cert.CertificateException {
				}

				@Override
				public void checkServerTrusted(
						java.security.cert.X509Certificate[] chain,
						String authType)
						throws java.security.cert.CertificateException {
				}

				@Override
				public java.security.cert.X509Certificate[] getAcceptedIssuers() {
					return null;
				}

	        };
	        DefaultHttpClient client = new DefaultHttpClient();
	        ctx.init(null, new TrustManager[] { tm }, null);
	        SSLSocketFactory ssf = new SSLSocketFactory(ctx);

	        ClientConnectionManager ccm = client.getConnectionManager();
	        SchemeRegistry sr = ccm.getSchemeRegistry();
	        //设置要使用的端口，默认是443
	        sr.register(new Scheme("https", 443, ssf));
	        return client;
	    } catch (Exception ex) {
	        LOG.error("", ex);
	        return null;
	    }
	}

	/**
	 * 
	 * @param url
	 * @param params
	 * @return
	 * @author asflex
	 * @date  2014-3-28下午7:24:02　
	 * @modify 2014-3-28下午7:24:02
	 */
	public static String post(String url, Map<String, String> params) {
		DefaultHttpClient httpClient = getHttpsClient();
		HttpPost post = new HttpPost(url);
		HttpEntity entity = map2UrlEncodedFormEntity(params);
		if(entity != null) {
			post.setEntity(entity);
		}
		LOG.info("http post---{}", getUrlRequestInfo(url, params));
		HttpResponse response;
		try {
			response = httpClient.execute(post);
			String result = EntityUtils.toString(response.getEntity());
			return result;
		} catch (ClientProtocolException e) {
			LOG.error("", e);
		} catch (IOException e) {
			LOG.error("", e);
		} finally {
			httpClient.getConnectionManager().shutdown();
		}
		return null;
	}

	/**
	 * 生成post请求时的记录
	 * @param url
	 * @param params
	 * @return
	 * @author asflex
	 * @date  2014-3-28下午7:23:33　
	 * @modify 2014-3-28下午7:23:33
	 */
	public static String getUrlRequestInfo(String url, Map<String, String> params) {

		StringBuilder paramStr = new StringBuilder();
		if(MapUtils.isNotEmpty(params)) {
			Iterator<Entry<String, String>> iterator = params.entrySet().iterator();
			Joiner.on("&").appendTo(paramStr, iterator);
		}
		return String.format("curl -d '%s' '%s'", StringUtils.trimToEmpty(paramStr.toString()), StringUtils.trimToEmpty(url));
	}
	/**
	 * 参数转换
	 * @param params
	 * @return
	 * @author asflex
	 * @date  2014-3-28下午7:23:05　
	 * @modify 2014-3-28下午7:23:05
	 */
	public static HttpEntity map2UrlEncodedFormEntity(Map<String, String> params) {
		if(MapUtils.isNotEmpty(params)) {
			Iterator<Entry<String, String>> iterator = params.entrySet().iterator();
			List<NameValuePair> nvps = Lists.newArrayList();
			while(iterator.hasNext()) {
				Entry<String, String> entry = iterator.next();
				nvps.add(new BasicNameValuePair(StringUtils.trimToEmpty(entry.getKey()), StringUtils.trimToEmpty(entry.getValue())));
			}
			try {
				return new UrlEncodedFormEntity(nvps);
			} catch (UnsupportedEncodingException e) {
				LOG.error("", e);
			}
		}
		return null;
	}

	public static void main(String[] args) {
		Map<String, String> params = Maps.newHashMapWithExpectedSize(8);
		params.put("username", "fred5");
		params.put("password", "1111");
		params.put("vcode", "");
		System.out.println(getUrlRequestInfo("", params));
		System.out.println(post("https://www.baidu.com/webApi/logins.jsp", params));
	}
}