测试环境：
JDK 1.4_2 操作系统：win2000 应用服务器：WebSphere 5.1.0
生产环境
JKD 1.6_0_14 操作系统:linux 应用服务器：Jboss
发送https代码如下：
- Java code
public String postHttps(String urlString, String data, Logger logger) throws Exception { SSLContext sc = null; TrustManager[] trustAllCerts = new TrustManager[] { new javax.net.ssl.X509TrustManager() { public java.security.cert.X509Certificate[] getAcceptedIssuers() { return null; } public void checkClientTrusted( java.security.cert.X509Certificate[] certs, String authType) { } public void checkServerTrusted( java.security.cert.X509Certificate[] certs, String authType) { } } }; try { sc = SSLContext.getInstance("SSL"); sc.init(null, trustAllCerts, new java.security.SecureRandom()); HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory()); } catch (Exception e) { } HostnameVerifier hv = new HostnameVerifier() { public boolean verify(String urlHostName, SSLSession session) { return urlHostName.equals(session.getPeerHost()); } }; HttpsURLConnection.setDefaultHostnameVerifier(hv); OutputStreamWriter os = null; BufferedReader reader = null; StringBuffer sb = new StringBuffer(); URL u = new URL(urlString); HttpsURLConnection conn = (HttpsURLConnection) u.openConnection(); // conn.setRequestProperty("Content-Type", "text/xml"); conn.setDoOutput(true); conn.setFollowRedirects(true); // conn.setReadTimeout(30000); os = new OutputStreamWriter(conn.getOutputStream()); os.write(data); os.flush(); os.close(); return null; }在测试环境是可以正常的发送到指定的https地址上，而在生产环境上访问时会抛出以下错误：
java.lang.ClassCastException:com.sun.net.ssl.internal.www.protocol.https.HttpsURLConnectionOLDImpl cannot be case to javax.net.ssl.HttpsURLConnection.
是在 HttpsURLConnection conn = (HttpsURLConnection) u.openConnection(); 处抛出。
之后用一下页面测试了下：
- Java code
<%@ page language="java" contentType="text/html; charset=GBK" pageEncoding="GBK"%><%@ page import="java.net.*" %><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=GBK"><title>测试Https</title></head><body><% out.print("默认：<br/>"); URL aURL = new URL("https://www.verisign.com"); URLConnection urlConn = aURL.openConnection(); if (urlConn instanceof com.sun.net.ssl.HttpsURLConnection) { out.print("*** openConnection returns an instanceof com.sun.net.ssl.HttpsURLConnection<br/>"); } if (urlConn instanceof javax.net.ssl.HttpsURLConnection) { out.print("*** openConnection returns an instanceof javax.net.ssl.HttpsURLConnection<br/>"); } if (urlConn instanceof HttpURLConnection) { out.print("*** openConnection returns an instnace of HttpURLConnection<br/>"); }%></body></html>测试环境输出：
*** openConnection returns an instanceof javax.net.ssl.HttpsURLConnection
*** openConnection returns an instnace of HttpURLConnection
生产环境输出：
*** openConnection returns an instanceof com.sun.net.ssl.HttpsURLConnection