使用HttpClient向HTTPS地址发送POST请求
package com.jadyer.util;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.security.KeyManagementException;import java.security.NoSuchAlgorithmException;import java.security.cert.CertificateException;import java.security.cert.X509Certificate;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import javax.net.ssl.SSLContext;import javax.net.ssl.TrustManager;import javax.net.ssl.X509TrustManager;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.NameValuePair;import org.apache.http.ParseException;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.HttpPost;import org.apache.http.conn.scheme.Scheme;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;/** * @see ===================================================================================================== * @see 在开发HTTPS应用时，时常会遇到两种情况 * @see 1、要么测试服务器没有有效的SSL证书,客户端连接时就会抛异常 * @see javax.net.ssl.SSLPeerUnverifiedException: peer not authenticated * @see 2、要么测试服务器有SSL证书,但可能由于各种不知名的原因,它还是会抛一个堆烂码七糟的异常 * @see ===================================================================================================== * @see 由于我们这里使用的是HttpComponents-Client-4.1.2创建的连接，所以，我们就要告诉它使用一个不同的TrustManager * @see TrustManager是一个用于检查给定的证书是否有效的类 * @see SSL使用的模式是X.509....对于该模式,Java有一个特定的TrustManager,称为X509TrustManager * @see 所以我们自己创建一个X509TrustManager实例 * @see 而在X509TrustManager实例中，若证书无效，那么TrustManager在它的checkXXX()方法中将抛出CertificateException * @see 既然我们要接受所有的证书,那么X509TrustManager里面的方法体中不抛出异常就行了 * @see 然后创建一个SSLContext并使用X509TrustManager实例来初始化之 * @see 接着通过SSLContext创建SSLSocketFactory，最后将SSLSocketFactory注册给HttpClient就可以了 * @see ===================================================================================================== * @create Jul 30, 2012 1:11:52 PM * @author 玄玉(http://blog.csdn/net/jadyer) */public class HttpClientUtil {public static void main(String[] args)throws Exception{Map<String, String> params = new HashMap<String, String>();params.put("TransName", "IQSR");params.put("Plain", "transId=IQSR~|~originalorderId=2012~|~originalTransAmt= ~|~merURL= ");params.put("Signature", "9b759887e6ca9d4c24509d22ee4d22494d0dd2dfbdbeaab3545c1acee62eec7");sendSSLPostRequest("https://www.cebbank.com/per/QueryMerchantEpay.do", params);}/** * 向HTTPS地址发送POST请求 * @param reqURL 请求地址 * @param params 请求参数 * @return 响应内容 */@SuppressWarnings("finally")public static String sendSSLPostRequest(String reqURL, Map<String, String> params){long responseLength = 0; //响应长度String responseContent = null; //响应内容HttpClient httpClient = new DefaultHttpClient(); //创建默认的httpClient实例X509TrustManager xtm = new X509TrustManager(){ //创建TrustManagerpublic void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {}public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {}public X509Certificate[] getAcceptedIssuers() { return null; }};try {//TLS1.0与SSL3.0基本上没有太大的差别，可粗略理解为TLS是SSL的继承者，但它们使用的是相同的SSLContextSSLContext ctx = SSLContext.getInstance("TLS");//使用TrustManager来初始化该上下文，TrustManager只是被SSL的Socket所使用ctx.init(null, new TrustManager[]{xtm}, null);//创建SSLSocketFactorySSLSocketFactory socketFactory = new SSLSocketFactory(ctx);//通过SchemeRegistry将SSLSocketFactory注册到我们的HttpClient上httpClient.getConnectionManager().getSchemeRegistry().register(new Scheme("https", 443, socketFactory));HttpPost httpPost = new HttpPost(reqURL); //创建HttpPostList<NameValuePair> formParams = new ArrayList<NameValuePair>(); //构建POST请求的表单参数for(Map.Entry<String,String> entry : params.entrySet()){formParams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));}httpPost.setEntity(new UrlEncodedFormEntity(formParams, "UTF-8"));HttpResponse response = httpClient.execute(httpPost); //执行POST请求HttpEntity entity = response.getEntity(); //获取响应实体if (null != entity) {responseLength = entity.getContentLength();responseContent = EntityUtils.toString(entity, "UTF-8");EntityUtils.consume(entity); //Consume response content}System.out.println("请求地址: " + httpPost.getURI());System.out.println("响应状态: " + response.getStatusLine());System.out.println("响应长度: " + responseLength);System.out.println("响应内容: " + responseContent);} catch (KeyManagementException e) {e.printStackTrace();} catch (NoSuchAlgorithmException e) {e.printStackTrace();} catch (UnsupportedEncodingException e) {e.printStackTrace();} catch (ClientProtocolException e) {e.printStackTrace();} catch (ParseException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();} finally {httpClient.getConnectionManager().shutdown(); //关闭连接,释放资源return responseContent;}}}