http 通讯时 ssl协议版本不对问题

X509TrustManager sunX509TrustManager;        public MyX509TrustManager() {
            try {
                TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509", "SunJSSE");                sunX509TrustManager = (X509TrustManager)tmf.getTrustManagers()[0];
            }            catch (Exception exception) {
            }
        }        public X509Certificate [] getAcceptedIssuers() {
            try {
                if (sunX509TrustManager != null)
                    return sunX509TrustManager.getAcceptedIssuers();                else
                    return null;
            }            catch (Exception exception) {
                return null;
            }
        }
 public B2CConnection(boolean useSSL) {
        bufLen = 4 * 1024 * 1024;        buffer = new byte[bufLen];        try {
            if (useSSL) {
                TrustManager myTM [] = { new MyX509TrustManager() };
                System.setProperty("java.protocol.handler.pkgs", "com.sun.net.ssl.internal.www.protocol");
                Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
SSLContext context = SSLContext.getInstance("SSLv3");
context.init(null, myTM, null);
        }
        }
        catch (Exception e) {
            e.printStackTrace();
        }
    }
    public String sendAndReceive(String srcUrl,String srcContent) {
HttpURLConnection connection = null;        InputStream       in = null;
        DataOutputStream out = null;        try {
            URL url = new URL(srcUrl); connection = (HttpURLConnection) url.openConnection();
            
            connection.setDoOutput(true);
            connection.setUseCaches(false);
            connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
            connection.setRequestMethod("POST");
            out = new DataOutputStream(connection.getOutputStream());
            out.writeBytes(srcContent);  
            out.flush();
            out.close(); 
            
            int contentLen = connection.getContentLength();
            in = connection.getInputStream();
            
            if (contentLen <= 0) {
                contentLen = bufLen;                int offset = 0;                do {
                    int len = in.read(buffer, offset, contentLen - offset);                    if (len <= 0)
                        break;                    offset += len;
                }while (true);                contentLen = offset;
            }            else {
                if (contentLen > bufLen) {
                    buffer = new byte[contentLen];                    bufLen = contentLen;
                }                int offset = 0;                do {
                    int len = in.read(buffer, offset, contentLen - offset);                    if (len <= 0)
                        break;                    offset += len;
                }while (true);                contentLen = offset;
            }            String resMsg = connection.getHeaderField(0);            if (resMsg.toLowerCase().indexOf("ok") < 0) {
                return null;
            }            connection.disconnect();
            in.close();
            String content = new String(buffer, 0, contentLen,"GBK");
            return content;
        }        catch (Exception e) {
            if (connection != null) {
                connection.disconnect();
            }            if (in != null) {
                try {
                    in.close();
                }                catch (IOException e1) {
                }
            }            e.printStackTrace();
            lastErr = e.getMessage();
        }        return null;
    }
如上部分代码！  为什么我客户端ssl请求过去，在服务端防火墙上发现是SSLv2呢！ 我服务端ssl是3.0版本的！所以导致
通讯协议版本不对，被拒绝了！ 大家帮我分下下！怎么回事！ 该怎么检查？ windows2003系统  项目在j2sdk1.4 下运行！