import了sun开头的类，虽然它在代码里压根就没派上用处！但是必须得引用！

 package action;

 import java.io.BufferedReader;
 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.OutputStream;
 import java.io.PrintWriter;
 import java.net.URL;
 import java.net.URLConnection;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.List;
 import java.security.KeyStore;
 import java.security.KeyStoreException;
 import java.security.NoSuchAlgorithmException;
 import java.security.UnrecoverableKeyException;
 import java.security.cert.CertificateException;

 import javax.net.ssl.HttpsURLConnection;
 import javax.net.ssl.KeyManagerFactory;
 import javax.net.ssl.SSLContext;
 import javax.net.ssl.SSLSocketFactory;
 import javax.net.ssl.TrustManager;

 import com.bill99.mgw.entity.*;
 import com.bill99.mgw.util.*;

 public class Post
 {
     /**
     * 向指定URL发送POST方法的请求
     * @param url 发送请求的URL
     * @param param 请求参数，请求参数应该是name1=value1&name2=value2的形式。
     * @return URL所代表远程资源的响应
      * @throws Exception
     */
     public static HashMap sendPost(String url,String tr1XML) throws Exception
     {
         OutputStream out = null;
         HashMap respXml = null;

         //获取证书路径
         File certFile = new File("C://TS/10411004511201290.jks");
         //File certFile = new File("D://hui.ding/workspace/DH_QuickPay/src/10411004511201290.jks");
         //访问Java密钥库，JKS是keytool创建的Java密钥库，保存密钥。
         KeyStore ks = KeyStore.getInstance("JKS");
         ks.load(new FileInputStream(certFile), "vpos123".toCharArray());
         //创建用于管理JKS密钥库的密钥管理器
         KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
         //初始化证书
         kmf.init(ks, "vpos123".toCharArray());

         //同位体验证信任决策源//同位体验证可信任的证书来源
         TrustManager[] tm = { new MyX509TrustManager() }; 

         //初始化安全套接字
         SSLContext sslContext = SSLContext.getInstance("SSL");
         //初始化SSL环境。第二个参数是告诉JSSE使用的可信任证书的来源，设置为null是从javax.net.ssl.trustStore中获得证书。
         //第三个参数是JSSE生成的随机数，这个参数将影响系统的安全性，设置为null是个好选择，可以保证JSSE的安全性。
         sslContext.init(kmf.getKeyManagers(),tm, null);

         //根据上面配置的SSL上下文来产生SSLSocketFactory,与通常的产生方法不同
         SSLSocketFactory factory = sslContext.getSocketFactory();

         try
         {
             URL realUrl = new URL(url);
             //打开和URL之间的连接
             HttpsURLConnection conn = (HttpsURLConnection)realUrl.openConnection();
             //创建安全的连接套接字
             conn.setSSLSocketFactory(factory);
             //发送POST请求必须设置如下两行,使用 URL 连接进行输出、入
             conn.setDoOutput(true);
             conn.setDoInput(true);
             //设置URL连接的超时时限
             conn.setReadTimeout(100000);

             //设置通用的请求属性
             String authString = "104110045112012" + ":" + "vpos123";
             String auth = "Basic " + Base64Binrary.encodeBase64Binrary(authString.getBytes());
             conn.setRequestProperty("Authorization", auth);

             // 获取URLConnection对象对应的输出流
             out = conn.getOutputStream();
             //发送请求参数
             out.write(tr1XML.getBytes("utf-8"));
             //flush 输出流的缓冲
             out.flush();

             //得到服务端返回
             InputStream is = conn.getInputStream();
             String reqData = "";
             if(is!=null && !"".equals(is))
             {
                 ByteArrayOutputStream bos = new ByteArrayOutputStream();
                 byte[] receiveBuffer = new byte[2048];//缓冲区长度
                 int readBytesSize = is.read(receiveBuffer);//读取数据长度，InputStream要读取的数据长度一定要小于等于缓冲区中的字节数
                 System.out.println("#######readBytesSize："+readBytesSize);

                 while(readBytesSize != -1){//判断流是否位于文件末尾而没有可用的字节
                     bos.write(receiveBuffer, 0, readBytesSize);//从receiveBuffer内存处的0偏移开始写，写与readBytesSize长度相等的字节
                     readBytesSize = is.read(receiveBuffer);
                     System.out.println("#######bos："+bos);
                 }
                 reqData = new String(bos.toByteArray(), "UTF-8");//编码后的tr2报文
             }
             System.out.println("tr2报文："+reqData);
             respXml= ParseUtil.parseXML(reqData);//给解析XML的函数传递快钱返回的TR2的XML数据流

         }
         catch(Exception e)
         {
             System.out.println("发送POST请求出现异常！" + e);
             e.printStackTrace();
         }
         //使用finally块来关闭输出流、输入流
         finally
         {
             if (out != null){out.close();}
             //if (in != null){in.close();}
         }
         return respXml;
     }

 }