负载均衡踩坑记

<%@ page="" contenttype="text/html;charset=UTF-8" language="java"><%@ page="" import="javax.net.ssl.*"><%@ page="" import="java.io.ByteArrayOutputStream"><%@ page="" import="java.io.DataInputStream"><%@ page="" import="java.io.InputStream"><%@ page="" import="java.io.OutputStream"><%@ page="" import="java.net.HttpURLConnection"><%@ page="" import="java.net.URL"><%@ page="" import="java.security.KeyManagementException"><%@ page="" import="java.security.NoSuchAlgorithmException"><%@ page="" import="java.security.cert.CertificateException"><%@ page="" import="java.security.cert.X509Certificate"><%!< code="">  public static void ignoreSsl() throws Exception {        HostnameVerifier hv = new HostnameVerifier() {            public boolean verify(String urlHostName, SSLSession session) {                return true;            }        };        trustAllHttpsCertificates();        HttpsURLConnection.setDefaultHostnameVerifier(hv);    }    private static void trustAllHttpsCertificates() throws Exception {        TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {            public X509Certificate[] getAcceptedIssuers() {                return null;            }            @Override            public void checkClientTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {                // Not implemented            }            @Override            public void checkServerTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {                // Not implemented            }        } };        try {            SSLContext sc = SSLContext.getInstance("TLS");            sc.init(null, trustAllCerts, new java.security.SecureRandom());            HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());        } catch (KeyManagementException e) {            e.printStackTrace();        } catch (NoSuchAlgorithmException e) {            e.printStackTrace();        }    }%><%< code="">        String target = "https://127.0.0.1:8443/test666.jsp";        URL url = new URL(target);        if ("https".equalsIgnoreCase(url.getProtocol())) {            ignoreSsl();        }        HttpURLConnection conn = (HttpURLConnection)url.openConnection();        StringBuilder sb = new StringBuilder();        conn.setRequestMethod(request.getMethod());        conn.setConnectTimeout(30000);        conn.setDoOutput(true);        conn.setDoInput(true);        conn.setInstanceFollowRedirects(false);        conn.connect();        ByteArrayOutputStream baos=new ByteArrayOutputStream();        OutputStream out2 = conn.getOutputStream();        DataInputStream in=new DataInputStream(request.getInputStream());        byte[] buf = new byte[1024];        int len = 0;        while ((len = in.read(buf)) != -1) {            baos.write(buf, 0, len);        }        baos.flush();        baos.writeTo(out2);        baos.close();        InputStream inputStream = conn.getInputStream();        OutputStream out3=response.getOutputStream();        int len2 = 0;        while ((len2 = inputStream.read(buf)) != -1) {            out3.write(buf, 0, len2);        }        out3.flush();        out3.close();%>