`
hanyi366
  • 浏览: 290461 次
  • 性别: Icon_minigender_1
  • 来自: 上海
社区版块
存档分类
最新评论

XmlHttpProxy

    博客分类:
  • Java
 
阅读更多
XmlHttpProxy


/* Copyright 2007 You may not modify, use, reproduce, or distribute this software except in compliance with the terms of the License at:
 http://developer.sun.com/berkeley_license.html
 $Id: XmlHttpProxy.java 2660 2008-10-29 14:40:28Z heiko.braun@jboss.com $
*/
package jmaki.xhp;

/* Copyright 2007 You may not modify, use, reproduce, or distribute this software except in compliance with the terms of the License at:
 http://developer.sun.com/berkeley_license.html
 $Id: XmlHttpProxy.java 2660 2008-10-29 14:40:28Z heiko.braun@jboss.com $
*/

import java.io.*;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.*;
import java.util.logging.*;

import javax.xml.transform.*;
import javax.xml.transform.stream.*;

import org.json.*;

public class XmlHttpProxy {

   public static String GET = "GET";
   public static String POST = "POST";
   public static String DELETE = "DELETE";
   public static String PUT = "PUT";

   private String userName = null;
   private String password = null;
   private static Logger logger;
   private String proxyHost = "";
   int proxyPort = -1;
   private JSONObject config;
   private static String USAGE = "Usage:  -url service_URL  -id service_key [-url or -id required] -xslurl xsl_url [optional] -format json|xml [optional] -callback[optional] -config [optional] -resources base_directory_containing XSL stylesheets [optional]";

   public XmlHttpProxy() {}

   public XmlHttpProxy(String proxyHost, int proxyPort) {
      this.proxyHost = proxyHost;
      this.proxyPort = proxyPort;
   }

   public XmlHttpProxy(String proxyHost, int proxyPort,
                       String userName, String password) {
      this.proxyHost = proxyHost;
      this.proxyPort = proxyPort;
      this.userName = userName;
      this.password = password;
   }

   /**
    * This method will go out and make the call and it will apply an XSLT Transformation with the
    * set of parameters provided.
    *
    * @param urlString - The URL which you are looking up
    * @param out - The OutputStream to which the resulting document is written
    * @param xslInputStream - An input Stream to an XSL style sheet that is provided to the XSLT processor. If set to null there will be no transformation
    * @param  paramsMap - A Map of parameters that are feed to the XSLT Processor. These params may be used when generating content. This may be set to null if no parameters are necessary.
    * @param method - The HTTP method used.
    *
    */
   public void processRequest(String urlString,
                              OutputStream out,
                              InputStream xslInputStream,
                              Map paramsMap,
                              Map headers,
                              String method,
                              String userName,
                              String password) throws IOException, MalformedURLException {
      doProcess(urlString, out, xslInputStream, paramsMap, headers,method, null,null, userName,password);
   }
   /**
    * This method will go out and make the call and it will apply an XSLT Transformation with the
    * set of parameters provided.
    *
    * @param urlString - The URL which you are looking up
    * @param out - The OutputStream to which the resulting document is written
    *
    */
   public void doPost(String urlString,
                      OutputStream out,
                      InputStream xslInputStream,
                      Map paramsMap,
                      Map headers,
                      String postData,
                      String postContentType,
                      String userName,
                      String password) throws IOException, MalformedURLException {
      doProcess(urlString, out, xslInputStream, paramsMap, headers, XmlHttpProxy.POST, postData, postContentType, userName, password);
   }

   /**
    * This method will go out and make the call and it will apply an XSLT Transformation with the
    * set of parameters provided.
    *
    * @param urlString - The URL which you are looking up
    * @param out - The OutputStream to which the resulting document is written
    * @param xslInputStream - An input Stream to an XSL style sheet that is provided to the XSLT processor. If set to null there will be no transformation
    * @param paramsMap - A Map of parameters that are feed to the XSLT Processor. These params may be used when generating content. This may be set to null if no parameters are necessary.
    * @param method - the HTTP method used.
    * @param postData - A String of the bodyContent to be posted. A doPost will be used if this is parameter is not null.
    * @param postContentType - The request contentType used when posting data. Will not be set if this parameter is null.
    * @param userName - userName used for basic authorization
    * @param password - password used for basic authorization
    */
   public void doProcess(String urlString,
                         OutputStream out,
                         InputStream xslInputStream,
                         Map paramsMap,
                         Map headers,
                         String method,
                         String postData,
                         String postContentType,
                         String userName,
                         String password) throws IOException, MalformedURLException {
      
      if (paramsMap == null) {
         paramsMap = new HashMap();
      }

      String format = (String)paramsMap.get("format");
      if (format == null) {
         format = "xml";
      }

      InputStream in = null;
      BufferedOutputStream os = null;

      HttpClient httpclient = null;

      if (userName != null && password != null)
      {
         httpclient = new HttpClient(proxyHost, proxyPort, urlString, headers, method, userName, password);
      }
      else
      {
         httpclient = new HttpClient(proxyHost, proxyPort, urlString, headers, method);
      }

      // post data determines whether we are going to do a get or a post
      if (postData == null) {
         in = httpclient.getInputStream();
      } else {
         in = httpclient.doPost(postData, postContentType);
      }

      if(null==in)
      {
         throw new IOException("Failed to open input stream");   
      }

      // read the encoding from the incoming document and default to UTF-8
      // if an encoding is not provided
      String ce = httpclient.getContentEncoding();
      if (ce == null) {
         String ct = httpclient.getContentType();
         if (ct != null) {
            int idx = ct.lastIndexOf("charset=");
            if (idx >= 0) {
               ce = ct.substring(idx+8);
            } else {
               ce = "UTF-8";
            }
         } else {
            ce = "UTF-8";
         }
      }
      // get the content type
      String cType = null;
      // write out the content type
      //http://www.ietf.org/rfc/rfc4627.txt
      if (format.equals("json")) {
         cType = "application/json;charset="+ce;
      } else {
         cType = "text/xml;charset="+ce;
      }
      try {
         byte[] buffer = new byte[1024];
         int read = 0;
         if (xslInputStream == null) {
            while (true) {
               read = in.read(buffer);
               if (read <= 0) break;
               out.write(buffer, 0, read );
            }
         } else {
            transform(in, xslInputStream, paramsMap, out, ce);
         }
      } catch (Exception e) {
         getLogger().severe("XmlHttpProxy transformation error: " + e);
      } finally {
         try {
            if (in != null) {
               in.close();
            }
            if (out != null) {
               out.flush();
               out.close();
            }
         } catch (Exception e) {
            // do nothing
         }
      }
   }

   /**
    * Do the XSLT transformation
    */
   public void transform( InputStream xmlIS,
                          InputStream xslIS,
                          Map params,
                          OutputStream result,
                          String encoding) {
      try {
         TransformerFactory trFac = TransformerFactory.newInstance();
         Transformer transformer = trFac.newTransformer(new StreamSource(xslIS));
         Iterator it = params.keySet().iterator();
         while (it.hasNext()) {
            String key = (String)it.next();
            transformer.setParameter(key, (String)params.get(key));
         }
         transformer.setOutputProperty("encoding", encoding);
         transformer.transform(new StreamSource(xmlIS), new StreamResult(result));
      } catch (Exception e) {
         getLogger().severe("XmlHttpProxy: Exception with xslt " + e);
      }
   }

   /**
    *
    * CLI to the XmlHttpProxy
    */
   public static void main(String[] args)
     throws IOException, MalformedURLException {

      getLogger().info("XmlHttpProxy 1.8");
      XmlHttpProxy xhp = new XmlHttpProxy();

      if (args.length == 0) {
         System.out.println(USAGE);
      }

      String method = XmlHttpProxy.GET;
      InputStream xslInputStream = null;
      String serviceKey = null;
      String urlString = null;
      String xslURLString = null;
      String format = "xml";
      String callback = null;
      String urlParams = null;
      String configURLString = "xhp.json";
      String resourceBase = "file:src/conf/META-INF/resources/xsl/";
      String username = null;
      String password = null;

      // read in the arguments
      int index = 0;
      while (index < args.length) {
         if (args[index].toLowerCase().equals("-url") && index + 1 < args.length) {
            urlString = args[++index];
         } else if (args[index].toLowerCase().equals("-key") && index + 1 < args.length) {
            serviceKey = args[++index];
         } else if (args[index].toLowerCase().equals("-id") && index + 1 < args.length) {
            serviceKey = args[++index];
         } else if (args[index].toLowerCase().equals("-callback") && index + 1 < args.length) {
            callback = args[++index];
         }  else if (args[index].toLowerCase().equals("-xslurl") && index + 1 < args.length) {
            xslURLString = args[++index];
         } else if (args[index].toLowerCase().equals("-method") && index + 1 < args.length) {
            method = args[++index];
         } else if (args[index].toLowerCase().equals("-username") && index + 1 < args.length) {
            username = args[++index];
         } else if (args[index].toLowerCase().equals("-password") && index + 1 < args.length) {
            password = args[++index];
         } else if (args[index].toLowerCase().equals("-urlparams") && index + 1 < args.length) {
            urlParams = args[++index];
         } else if (args[index].toLowerCase().equals("-config") && index + 1 < args.length) {
            configURLString = args[++index];
         } else if (args[index].toLowerCase().equals("-resources") && index + 1 < args.length) {
            resourceBase = args[++index];
         }
         index++;
      }

      if (serviceKey != null) {
         try {
            InputStream is = (new URL(configURLString)).openStream();
            JSONObject services = loadServices(is);
            JSONObject service = services.getJSONObject(serviceKey);
            // default to the service default if no url parameters are specified
            if (urlParams == null && service.has("defaultURLParams")) {
               urlParams = service.getString("defaultURLParams");
            }
            String serviceURL = service.getString("url");
            // build the URL properly
            if (urlParams != null && serviceURL.indexOf("?") == -1){
               serviceURL += "?";
            } else if (urlParams != null){
               serviceURL += "&";
            }
            String apiKey = "";
            if (service.has("apikey")) apiKey = service.getString("apikey");
            urlString = serviceURL + apiKey +  "&" + urlParams;
            if (service.has("xslStyleSheet")) {
               xslURLString = service.getString("xslStyleSheet");
               // check if the url is correct of if to load from the classpath

            }
         } catch (Exception ex) {
            getLogger().severe("XmlHttpProxy Error loading service: " + ex);
            System.exit(1);
         }
      } else if (urlString == null) {
         System.out.println(USAGE);
         System.exit(1);
      }
      // The parameters are feed to the XSL Stylsheet during transformation.
      // These parameters can provided data or conditional information.
      Map paramsMap = new HashMap();
      if (format != null) {
         paramsMap.put("format", format);
      }
      if (callback != null) {
         paramsMap.put("callback", callback);
      }

      if (xslURLString != null) {
         URL xslURL = new URL(xslURLString);
         if (xslURL != null) {
            xslInputStream  = xslURL.openStream();
         } else {
            getLogger().severe("Error: Unable to locate XSL at URL " + xslURLString);
         }
      }
      xhp.processRequest(urlString, System.out, xslInputStream, paramsMap, null, method, username, password);
   }

   public static Logger getLogger() {
      if (logger == null) {
         logger = Logger.getLogger("jmaki.xhp.Log");
      }
      return logger;
   }

   public static JSONObject loadServices(InputStream is)
   {
      JSONObject config = null;
      JSONObject services = new JSONObject();
      try
      {
         config = loadJSONObject(is).getJSONObject("xhp");
         JSONArray sA = config.getJSONArray("services");
         for (int l=0; l < sA.length(); l++) {
            JSONObject value = sA.getJSONObject(l);
            String key = value.getString("id");
            services.put(key,value);
         }
      }
      catch (Exception ex)
      {
         getLogger().severe("XmlHttpProxy error loading services." + ex);
      }
      return services;
   }

   public static JSONObject loadJSONObject(InputStream in) {
      ByteArrayOutputStream out = null;
      try {
         byte[] buffer = new byte[1024];
         int read = 0;
         out = new ByteArrayOutputStream();
         while (true) {
            read = in.read(buffer);
            if (read <= 0) break;
            out.write(buffer, 0, read );
         }
         return new JSONObject(out.toString());
      } catch (Exception e) {
         getLogger().severe("XmlHttpProxy error reading in json "  + e);
      } finally {
         try {
            if (in != null) {
               in.close();
            }
            if (out != null) {
               out.flush();
               out.close();
            }
         } catch (Exception e) {
         }
      }
      return null;
   }
}





XmlHttpProxyServlet



/* Copyright 2007 You may not modify, use, reproduce, or distribute this software except in compliance with the terms of the License at:
 http://developer.sun.com/berkeley_license.html
 $Id: XmlHttpProxyServlet.java 2660 2008-10-29 14:40:28Z heiko.braun@jboss.com $
*/
package jmaki.xhp;

import java.io.*;
import java.util.*;
import java.net.URL;
import java.net.URLConnection;
import java.util.logging.*;

import javax.servlet.*;
import javax.servlet.http.*;

import org.json.*;

/**  XmlHttpProxyServlet
 *   @author Greg Murray
 */
public class XmlHttpProxyServlet extends HttpServlet
{

   public static String REMOTE_USER = "REMOTE_USER";

   private static String XHP_LAST_MODIFIED = "xhp_last_modified_key";
   private static String XHP_CONFIG = "xhp.json";

   private static boolean allowXDomain = false;
   private static boolean requireSession = false;
   private static boolean createSession = false;
   private static String responseContentType = "application/json;charset=UTF-8";
   private static boolean rDebug = false;
   private Logger logger = null;
   private XmlHttpProxy xhp = null;
   private ServletContext ctx;
   private JSONObject services = null;
   private String resourcesDir = "/resources/";
   private String classpathResourcesDir = "/META-INF/resources/";
   private String headerToken = "jmaki-";
   private String testToken = "xtest-";
   
   public XmlHttpProxyServlet() {
      if (rDebug) {
         logger = getLogger();
      }
   }

   public void init(ServletConfig config) throws ServletException {
      super.init(config);
      ctx = config.getServletContext();
      // set the response content type
      if (ctx.getInitParameter("responseContentType") != null) {
         responseContentType = ctx.getInitParameter("responseContentType");
      }
      // allow for resources dir over-ride at the xhp level otherwise allow
      // for the jmaki level resources
      if (ctx.getInitParameter("jmaki-xhp-resources") != null) {
         resourcesDir = ctx.getInitParameter("jmaki-xhp-resources");
      } else if (ctx.getInitParameter("jmaki-resources") != null) {
         resourcesDir = ctx.getInitParameter("jmaki-resources");
      }
      // allow for resources dir over-ride
      if (ctx.getInitParameter("jmaki-classpath-resources") != null) {
         classpathResourcesDir = ctx.getInitParameter("jmaki-classpath-resources");
      }
      String requireSessionString = ctx.getInitParameter("requireSession");
      if (requireSessionString == null) requireSessionString = ctx.getInitParameter("jmaki-requireSession");
      if (requireSessionString != null) {
         if ("false".equals(requireSessionString)) {
            requireSession = false;
            getLogger().severe("XmlHttpProxyServlet: intialization. Session requirement disabled.");
         } else if ("true".equals(requireSessionString)) {
            requireSession = true;
            getLogger().severe("XmlHttpProxyServlet: intialization. Session requirement enabled.");
         }
      }
      String xdomainString = ctx.getInitParameter("allowXDomain");
      if (xdomainString == null) xdomainString = ctx.getInitParameter("jmaki-allowXDomain");
      if (xdomainString != null) {
         if ("true".equals(xdomainString)) {
            allowXDomain = true;
            getLogger().severe("XmlHttpProxyServlet: intialization. xDomain access is enabled.");
         } else if ("false".equals(xdomainString)) {
            allowXDomain = false;
            getLogger().severe("XmlHttpProxyServlet: intialization. xDomain access is disabled.");
         }
      }
      String createSessionString = ctx.getInitParameter("jmaki-createSession");
      if (createSessionString != null) {
         if ("true".equals(createSessionString)) {
            createSession = true;
            getLogger().severe("XmlHttpProxyServlet: intialization. create session is enabled.");
         } else if ("false".equals(xdomainString)) {
            createSession = false;
            getLogger().severe("XmlHttpProxyServlet: intialization. create session is disabled.");
         }
      }
      // if there is a proxyHost and proxyPort specified create an HttpClient with the proxy
      String proxyHost = ctx.getInitParameter("proxyHost");
      String proxyPortString = ctx.getInitParameter("proxyPort");
      if (proxyHost != null && proxyPortString != null) {
         int proxyPort = 8080;
         try {
            proxyPort= new Integer(proxyPortString).intValue();
            xhp = new XmlHttpProxy(proxyHost, proxyPort);
         } catch (NumberFormatException nfe) {
            getLogger().severe("XmlHttpProxyServlet: intialization error. The proxyPort must be a number");
            throw new ServletException("XmlHttpProxyServlet: intialization error. The proxyPort must be a number");
         }
      } else {
         xhp = new XmlHttpProxy();
      }
   }

   private void getServices(HttpServletResponse res)
   {
      InputStream is = null;
      try
      {
         URL url = ctx.getResource(resourcesDir + XHP_CONFIG);
         // use classpath if not found locally.
         //if (url == null) url = XmlHttpProxyServlet.class.getResource(classpathResourcesDir + XHP_CONFIG);
         if (url == null) url = XmlHttpProxyServlet.class.getResource(XHP_CONFIG);  // same package
         is = url.openStream();
      }
      catch (Exception ex)
      {
         try
         {
            getLogger().severe("XmlHttpProxyServlet error loading xhp.json : " + ex);
            PrintWriter writer = res.getWriter();
            writer.write("XmlHttpProxyServlet Error: Error loading xhp.json. Make sure it is available in the /resources directory of your applicaton.");
            writer.flush();
         }
         catch (Exception iox) {}
      }
      services = xhp.loadServices(is);
   }

   public void doDelete(HttpServletRequest req, HttpServletResponse res) {
      doProcess(req,res, XmlHttpProxy.DELETE);
   }

   public void doGet(HttpServletRequest req, HttpServletResponse res) {
      doProcess(req,res, XmlHttpProxy.GET);
   }

   public void doPost(HttpServletRequest req, HttpServletResponse res) {
      doProcess(req,res, XmlHttpProxy.POST);
   }

   public void doPut(HttpServletRequest req, HttpServletResponse res) {
      doProcess(req,res, XmlHttpProxy.PUT);
   }

   public void doProcess(HttpServletRequest req, HttpServletResponse res, String method)
   {

      boolean isPost = XmlHttpProxy.POST.equals(method);
      StringBuffer bodyContent = null;
      OutputStream out = null;
      PrintWriter writer = null;
      String serviceKey = null;
      try {
        BufferedReader in = req.getReader();
        String line = null;
        while ((line = in.readLine()) != null) {
           if (bodyContent == null) bodyContent = new StringBuffer();
           bodyContent.append(line);
        }
     } catch (Exception e) {
     } 

      try
      {
         HttpSession session = null;
         // it really does not make sense to use create session with require session as
         // the create session will always result in a session created and the requireSession
         // will always succeed. Leaving the logic for now.
         if (createSession) {
            session = req.getSession(true);
         }
         if (requireSession) {
            // check to see if there was a session created for this request
            // if not assume it was from another domain and blow up
            // Wrap this to prevent Portlet exeptions
            session = req.getSession(false);
            if (session == null) {
               res.setStatus(HttpServletResponse.SC_FORBIDDEN);
               return;
            }
         }
         serviceKey = req.getParameter("id");
         // only to preven regressions - Remove before 1.0
         if (serviceKey == null) serviceKey = req.getParameter("key");
         // check if the services have been loaded or if they need to be reloaded
         if (services == null || configUpdated()) {
            getServices(res);
         }
         String urlString = null;
         String xslURLString = null;
         String userName = null;
         String password = null;
         String format = "json";
         String callback = req.getParameter("callback");
         String urlParams = req.getParameter("urlparams");
         String countString = req.getParameter("count");
         boolean passthrough = false;
         // encode the url to prevent spaces from being passed along
         if (urlParams != null) {
            urlParams = urlParams.replace(' ', '+');
         }
         // get the headers to pass through
         Map headers = null;
         // Forward all request headers starting with the header token jmaki-
         // and chop off the jmaki-
         Enumeration hnum = req.getHeaderNames();

         // test hack

         while (hnum.hasMoreElements()) {
            String name = (String)hnum.nextElement();
            if (name.startsWith(headerToken))
            {
               if (headers == null) headers = new HashMap();

               String value = "";
               // handle multi-value headers
               Enumeration vnum = req.getHeaders(name);
               while (vnum.hasMoreElements()) {
                  value += (String)vnum.nextElement();
                  if (vnum.hasMoreElements()) value += ";";
               }
               String sname = name.substring(headerToken.length(), name.length());
               headers.put(sname,value);
            }
            else if(name.startsWith(testToken))
            {
               // hack test capabilities for authentication
               if("xtest-user".equals(name)) userName = req.getHeader("xtest-user");
               if("xtest-pass".equals(name)) password = req.getHeader("xtest-pass");
            }
         }
         try
         {
            String actualServiceKey = serviceKey != null ? serviceKey : "default";
            if (services.has(actualServiceKey))
            {
               JSONObject service = services.getJSONObject(actualServiceKey);
               String serviceURL = service.getString("url");
               if(null==serviceURL)
                  throw new IllegalArgumentException("xhp.json: service url is mising");

               if (service.has("passthrough")) passthrough =
                     Boolean.valueOf(service.getString("passthrough"));

               if (service.has("username")) userName = service.getString("username");
               if (service.has("password")) password = service.getString("password");

               String apikey = "";
               if (service.has("apikey")) apikey = service.getString("apikey");
               if (service.has("xslStyleSheet")) xslURLString = service.getString("xslStyleSheet");

               // default to the service default if no url parameters are specified
               if(!passthrough)
               {
                  if (urlParams == null && service.has("defaultURLParams")) {
                     urlParams = service.getString("defaultURLParams");
                  }

                  // build the URL
                  if (urlParams != null && serviceURL.indexOf("?") == -1){
                     serviceURL += "?";
                  } else  if (urlParams != null) {
                     serviceURL += "&";
                  }

                  urlString = serviceURL + apikey;
                  if (urlParams != null) urlString += "&" + urlParams;
               }

               if(passthrough)
               {
                  // override service url and url params
                  String path = req.getPathInfo();
                  path = path.substring(path.indexOf("xhp/")+3, path.length());

                  urlString = serviceURL + path + "?" + req.getQueryString();
               }
            }
            else
            {
               writer = res.getWriter();
               if (serviceKey == null) writer.write("XmlHttpProxyServlet Error: id parameter specifying serivce required.");
               else writer.write("XmlHttpProxyServlet Error : service for id '" + serviceKey + "' not  found.");
               writer.flush();
               return;
            }
         }
         catch (Exception ex)
         {
            getLogger().severe("XmlHttpProxyServlet Error loading service: " + ex);
            res.setStatus(500);
         }

         Map paramsMap = new HashMap();
         paramsMap.put("format", format);
         // do not allow for xdomain unless the context level setting is enabled.
         if (callback != null && allowXDomain) {
            paramsMap.put("callback", callback);
         }
         if (countString != null) {
            paramsMap.put("count", countString);
         }

         InputStream xslInputStream = null;

         if (urlString == null) {
            writer = res.getWriter();
            writer.write("XmlHttpProxyServlet parameters:  id[Required] urlparams[Optional] format[Optional] callback[Optional]");
            writer.flush();
            return;
         }
         // support for session properties and also authentication name
         if (urlString.indexOf("${") != -1) {
            urlString = processURL(urlString, req, res);
         }
         // default to JSON
         res.setContentType(responseContentType);
         out = res.getOutputStream();
         // get the stream for the xsl stylesheet
         if (xslURLString != null) {
            // check the web root for the resource
            URL xslURL = null;
            xslURL = ctx.getResource(resourcesDir + "xsl/"+ xslURLString);
            // if not in the web root check the classpath
            if (xslURL == null) {
               xslURL = XmlHttpProxyServlet.class.getResource(classpathResourcesDir + "xsl/" + xslURLString);
            }
            if (xslURL != null) {
               xslInputStream  = xslURL.openStream();
            } else {
               String message = "Could not locate the XSL stylesheet provided for service id " +  serviceKey + ". Please check the XMLHttpProxy configuration.";
               getLogger().severe(message);
               res.setStatus(500);
               try {
                  out.write(message.getBytes());
                  out.flush();
                  return;
               } catch (java.io.IOException iox){
               }
            }
         }

         if (!isPost)
         {
            xhp.processRequest(urlString, out, xslInputStream, paramsMap, headers, method, userName, password);
         }
         else
         {
            final String content = bodyContent != null ? bodyContent.toString() : "";
            if (bodyContent == null)
               getLogger().info("XmlHttpProxyServlet attempting to post to url " + urlString + " with no body content");
            xhp.doPost(urlString, out, xslInputStream, paramsMap, headers, content, req.getContentType(), userName, password);
         }
      }
      catch (Exception iox)
      {
         iox.printStackTrace();
         getLogger().severe("XmlHttpProxyServlet: caught " + iox);
         res.setStatus(500);
         /*try {
            writer = res.getWriter();
            writer.write("XmlHttpProxyServlet error loading service for " + serviceKey + " . Please notify the administrator.");
            writer.flush();
         } catch (java.io.IOException ix) {
            ix.printStackTrace();
         }*/
         return;
      }
      finally
      {
         try
         {
            if (out != null) out.close();
            if (writer != null) writer.close();
         } catch (java.io.IOException iox){}
      }
   }

   /* Allow for a EL style replacements in the serviceURL
    *
    * The constant REMOTE_USER will replace the contents of ${REMOTE_USER}
    * with the return value of request.getRemoteUserver() if it is not null
    * otherwise the ${REMOTE_USER} is replaced with a blank.
    *
    * If you use ${session.somekey} the ${session.somekey} will be replaced with
    * the String value of the session varialble somekey or blank if the session key
    * does not exist.
    *
   */
   private String processURL(String url, HttpServletRequest req, HttpServletResponse res) {
      String serviceURL = url;
      int start = url.indexOf("${");
      int end = url.indexOf("}", start);
      if (end != -1) {
         String prop = url.substring(start + 2, end).trim();
         // no matter what we will remove the ${}
         // default to blank like the JSP EL
         String replace = "";
         if (REMOTE_USER.equals(prop)) {
            if (req.getRemoteUser() != null) replace = req.getRemoteUser();
         }
         if (prop.toLowerCase().startsWith("session.")) {
            String sessionKey = prop.substring("session.".length(), prop.length());
            if (req.getSession().getAttribute(sessionKey) != null) {
               // force to a string
               replace = req.getSession().getAttribute(sessionKey).toString();
            }
         }
         serviceURL = serviceURL.substring(0, start) +
               replace +
               serviceURL.substring(end + 1, serviceURL.length());
      }
      // call recursively to process more than one instance of a ${ in the serviceURL
      if (serviceURL.indexOf("${") != -1) serviceURL = processURL(serviceURL, req, res);
      return serviceURL;
   }

   /**
    * Check to see if the configuration file has been updated so that it may be reloaded.
    */
   private boolean configUpdated() {
      try {
         URL url = ctx.getResource(resourcesDir + XHP_CONFIG);
         URLConnection con;
         if (url == null) return false ;
         con = url.openConnection();
         long lastModified = con.getLastModified();
         long XHP_LAST_MODIFIEDModified = 0;
         if (ctx.getAttribute(XHP_LAST_MODIFIED) != null) {
            XHP_LAST_MODIFIEDModified = ((Long)ctx.getAttribute(XHP_LAST_MODIFIED)).longValue();
         } else {
            ctx.setAttribute(XHP_LAST_MODIFIED, new Long(lastModified));
            return false;
         }
         if (XHP_LAST_MODIFIEDModified < lastModified) {
            ctx.setAttribute(XHP_LAST_MODIFIED, new Long(lastModified));
            return true;
         }
      } catch (Exception ex) {
         getLogger().severe("XmlHttpProxyServlet error checking configuration: " + ex);
      }
      return false;
   }

   public Logger getLogger() {
      if (logger == null) {
         logger = Logger.getLogger("jmaki.services.xhp.Log");
      }
      return logger;
   }

   private void logMessage(String message) {
      if (rDebug) {
         getLogger().info(message);
      }
   }
}




HttpClient


/* Copyright 2006-2008 Sun Microsystems, Inc.  All rights reserved.  You may not modify, use, reproduce, or distribute this software except in compliance with the terms of the License at:
 http://developer.sun.com/berkeley_license.html
 $Id: HttpClient.java 2631 2008-10-27 17:25:05Z heiko.braun@jboss.com $
*/package jmaki.xhp;

import java.io.*;
import java.util.Map;
import java.util.Iterator;
import java.net.*;
import java.util.logging.*;
import java.security.Security;

/**
 * @author Yutaka Yoshida, Greg Murray
 *
 * Minimum set of HTTPclient supporting both http and https.
 * It's aslo capable of POST, but it doesn't provide doGet because
 * the caller can just read the inputstream.
 */
public class HttpClient {

   private static Logger logger;
   private String proxyHost = null;
   private int proxyPort = -1;
   private boolean isHttps = false;
   private boolean isProxy = false;
   private HttpURLConnection urlConnection = null;
   private Map headers;

   /**
    * @param phost PROXY host name
    * @param pport PROXY port string
    * @param url URL string
    * @param headers Map
    */
   public HttpClient(
         String phost,
         int pport,
         String url,
         Map headers,
         String method)
         throws MalformedURLException
   {
      if (phost != null && pport != -1)
      {
         this.isProxy = true;
      }

      this.proxyHost = phost;
      this.proxyPort = pport;

      if (url.trim().startsWith("https:")) {
         isHttps = true;
      }

      this.urlConnection = getURLConnection(url);
      try {
         this.urlConnection.setRequestMethod(method);
      } catch (java.net.ProtocolException pe) {
         HttpClient.getLogger().severe("Unable protocol method to " + method + " : " + pe);
      }
      this.headers = headers;
      // seat headers
      if (headers != null) {
         Iterator it = headers.keySet().iterator();
         if (it != null) {
            while (it.hasNext()) {
               String key = (String)it.next();
               String value = (String)headers.get(key);
               this.urlConnection.setRequestProperty (key, value);
            }
         }
      }
   }

   /**
    * @param phost PROXY host name
    * @param pport PROXY port string
    * @param url URL string
    * @param headers Map
    * @param userName string
    * @param password string
    */
   public HttpClient(String phost,
                     int pport,
                     String url,
                     Map headers,
                     String method,
                     String userName,
                     String password)
         throws MalformedURLException {
      try
      {
         if (phost != null && pport != -1) {
            this.isProxy = true;
         }

         this.proxyHost = phost;
         this.proxyPort = pport;
         if (url.trim().startsWith("https:")) {
            isHttps = true;
         }
         this.urlConnection = getURLConnection(url);
         try {
            this.urlConnection.setRequestMethod(method);
         } catch (java.net.ProtocolException pe) {
            HttpClient.getLogger().severe("Unable protocol method to " + method + " : " + pe);
         }
         // set basic authentication information
         String auth = userName + ":" +  password;
         String encoded = new sun.misc.BASE64Encoder().encode (auth.getBytes());
         // set basic authorization
         this.urlConnection.setRequestProperty ("Authorization", "Basic " + encoded);
         this.headers = headers;
         // seat headers
         if (headers != null) {
            Iterator it = headers.entrySet().iterator();
            if (it != null) {
               while (it.hasNext()) {
                  String key = (String)it.next();
                  String value = (String)headers.get(key);
                  this.urlConnection.setRequestProperty (key, value);
               }
            }
         }
      } catch (Exception ex) {
         HttpClient.getLogger().severe("Unable to set basic authorization for " + userName  + " : " +ex);
      }
   }

   /**
    * private method to get the URLConnection
    * @param str URL string
    */
   private HttpURLConnection getURLConnection(String str)
         throws MalformedURLException {
      try {

         if (isHttps) {
            /* when communicating with the server which has unsigned or invalid
            * certificate (https), SSLException or IOException is thrown.
            * the following line is a hack to avoid that
            */
            Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
            System.setProperty("java.protocol.handler.pkgs", "com.sun.net.ssl.internal.www.protocol");
            if (isProxy) {
               System.setProperty("https.proxyHost", proxyHost);
               System.setProperty("https.proxyPort", proxyPort + "");
            }
         }
         else
         {
            if (isProxy)
            {
               System.setProperty("http.proxyHost", proxyHost);
               System.setProperty("http.proxyPort", proxyPort  + "");
            }
         }

         URL url = new URL(str);
         HttpURLConnection uc = (HttpURLConnection)url.openConnection();
         // if this header has not been set by a request set the user agent.
         if (headers == null ||
               (headers != null &&  headers.get("user-agent") == null)) {
            // set user agent to mimic a common browser
            String ua="Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322)";
            uc.setRequestProperty("user-agent", ua);
         }
         return uc;
      }
      catch (MalformedURLException me)
      {
         throw new MalformedURLException(str + " is not a valid URL");
      }
      catch (Exception e)
      {
         throw new RuntimeException("Unknown error creating UrlConnection: " + e);
      }
   }

   /**
    * returns the inputstream from URLConnection
    * @return InputStream
    */
   public InputStream getInputStream() {
      try
      {
         // logger doesnt work, because it writes to stderr,
         // which causes GwtTest to interpret it as failure
         System.out.println(
               this.urlConnection.getRequestMethod()+ " " +
                     this.urlConnection.getURL() +": "+
                     this.urlConnection.getResponseCode()
         );
         return (this.urlConnection.getInputStream());
      } catch (Exception e) {
         e.printStackTrace();
         return null;
      }
   }

   /**
    * return the OutputStream from URLConnection
    * @return OutputStream
    */
   public OutputStream getOutputStream() {

      try {
         return (this.urlConnection.getOutputStream());
      } catch (Exception e) {
         e.printStackTrace();
         return null;
      }
   }

   /**
    * posts data to the inputstream and returns the InputStream.
    * @param postData data to be posted. must be url-encoded already.
    * @param contentType allows you to set the contentType of the request.
    * @return InputStream input stream from URLConnection
    */
   public InputStream doPost(String postData, String contentType) {
      this.urlConnection.setDoOutput(true);
      if (contentType != null) this.urlConnection.setRequestProperty( "Content-type", contentType );

      OutputStream os = this.getOutputStream();
      PrintStream ps = new PrintStream(os);
      ps.print(postData);
      ps.close();
      return (this.getInputStream());
   }

   public String getContentEncoding() {
      if (this.urlConnection == null) return null;
      return (this.urlConnection.getContentEncoding());
   }
   public int getContentLength() {
      if (this.urlConnection == null) return -1;
      return (this.urlConnection.getContentLength());
   }
   public String getContentType() {
      if (this.urlConnection == null) return null;
      return (this.urlConnection.getContentType());
   }
   public long getDate() {
      if (this.urlConnection == null) return -1;
      return (this.urlConnection.getDate());
   }
   public String getHeader(String name) {
      if (this.urlConnection == null) return null;
      return (this.urlConnection.getHeaderField(name));
   }
   public long getIfModifiedSince() {
      if (this.urlConnection == null) return -1;
      return (this.urlConnection.getIfModifiedSince());
   }

   public static Logger getLogger() {
      if (logger == null) {
         logger = Logger.getLogger("jmaki.xhp.Log");
      }
      return logger;
   }
}



分享到:
评论

相关推荐

    计算机视觉开发:OpenCV入门教程及应用

    内容概要:本文档详细介绍了OpenCV的基本概念及其在计算机视觉领域的应用,重点讲解了OpenCV在C++和Python环境下的安装方法,并提供了图像读取、显示、基本操作、视频处理以及面部检测的具体代码示例。此外,还涉及了一些图像处理技术的快速演示和进一步学习的路径建议。 适合人群:对计算机视觉感兴趣的新手开发者和技术爱好者。 使用场景及目标:本教程适用于希望入门计算机视觉和图像处理的新手,通过实际操作练习提升技术水平,掌握OpenCV的基本用法,并能够应用于实际项目,如OCR应用、图像分割与目标检测等。 阅读建议:建议读者按照文档提供的步骤进行实践,逐步完成每个代码示例,结合官方文档和其他资源深入理解各个函数的作用。对于初学者来说,可以通过多动手尝试,加深对OpenCV的理解。

    围绕着一系列的经典Python练习题 .zip

    围绕着一系列的经典Python练习题。Python练习一些按照回顾排列的Python练习题。欢迎提交你的答案或添加更多有趣的题目!从开始学Python以来,接触了精彩的练习题。下面十个练习题,是我做的和练习出来的题里比较有趣的,现在按照难度由低到高排列。欢迎到GitHub上提交你的答案。猜测数字经典的猜数字游戏,几乎是学编程时都会做的。功能描述随机选择三个以内的数字作为答案。用户输入一个数字,程序会提示大了或者小了,直到用户猜中。2.FizzBu​​zz另一道经典编程题。功能描述遍历并打印0到100,如果数字能被3整除,显示Fizz如果数字能被5整除,显示Buzz如果能同时被3和5整除,就显示FizzBu​​zz。结果应该类似0,1 ,2,嘶嘶声,4,嗡嗡声,6……14,嘶嘶声,16……3. 猜测数字的AI和猜数字一样,不过这次是设计一个能猜数字的人工智能功能描述用户输入一个单位以内的数字,AI需要最少的猜测次数,并显示出猜测的次数和数字。4.整点报时老式的挂钟会在整点报时,响铃的次数和时间是一致的。我们设计了一个在电脑上运行的报时

    毕设源码-python-django基于python技术的学生管理系统的设计与开发-期末大作业+说明文档.rar

    本项目是一个基于Python技术的学生管理系统,采用Django框架进行开发,旨在为计算机相关专业的学生提供一个实践性强、功能全面的管理系统,以帮助他们完成毕业设计或进行项目实战练习。 系统实现了对学生信息、课程信息、成绩、考勤等多方面的管理功能。学生信息管理包括学生基本信息的增删改查;课程信息管理允许管理员设置课程信息,包括课程名称、授课老师、学分等;成绩管理功能使学生和教师能够录入、查看和修改成绩;考勤管理则方便教师记录学生的出勤情况。 该项目采用B/S架构,前端使用HTML、CSS、JavaScript等技术,后端使用Python语言和Django框架,数据库采用MySQL。Django框架提供了强大的后台管理功能,使得系统管理更加便捷。 通过开发这个项目,学生不仅能提升自己的编程能力,还能学习到如何构建一个实际应用的系统,对于即将步入职场的学生来说,具有很高的实用价值。

    python入门-安装Python软件包.pdf

    python入门——安装Python软件包

    消息中间件源码学习(打注释学习).zip

    消息中间件源码学习(打注释学习)

    阿里消息中间件MetaQ学习Demo.zip

    阿里消息中间件MetaQ学习Demo

    数学建模培训资料 数学建模实战题目真题答案解析解题过程&论文报告 抑制房地产泡沫问题研究 共69页.pdf

    数学建模培训资料 数学建模实战题目真题答案解析解题过程&论文报告 抑制房地产泡沫问题研究 共69页.pdf

    rbac组件(基于角色的权限控制).zip

    rbac组件(基于角色的权限控制)

    Discuz! X3.5 R20240520 增量补丁包下载 X3.5 2023-12-21 升级到 X3.5 2024-05-20 补丁包

    压缩包内,SC是简体补丁包,TC是繁体补丁包

    ssm框架Java项目源码-基于Java的在线日语培训平台的设计与实现+jsp毕设-大作业.zip

    本项目是一个基于Java的在线日语培训平台的设计与实现,采用SSM框架(Spring+SpringMVC+MyBatis)进行开发,旨在为计算机相关专业的学生提供一个实践和学习的平台,同时也为日语学习者提供一个在线学习的空间。项目中主要功能涵盖了用户管理、课程管理、学习资源上传下载、在线测试与反馈等多个方面。通过该平台,教师能够轻松管理课程内容和学生信息,学生则可以随时随地访问学习资源,参与在线课程和测试,从而提高学习效率和兴趣。 在开发此项目的过程中,我们重点关注了系统的可维护性和可扩展性,确保代码结构清晰,便于后续的功能迭代和优化。此外,通过使用SSM框架,实现了前后端的分离,提高了开发效率和系统的响应速度。该项目不仅能够满足毕设的需求,还能作为Java学习者提升编程能力和实践经验的实用工具。

    机器xuex(大模型):语言模型在生成问题答案时的真实性数据集

    TruthfulQA是一个专门设计的基准测试数据集,用于衡量。这个数据集包含了817个问题,覆盖了38个不同的类别,如健康、法律、金融和政治等。这些问题被精心设计,以至于某些人可能会因为错误的信念或误解而给出错误的答案。因此,要在这个数据集上表现良好,语言模型必须避免生成从模仿人类文本中学到的错误答案。 TruthfulQA的数据集结构包括两种配置:generation和multiple_choice。在generation配置中,每个问题都包含了类型、类别、问题、最佳答案、正确答案列表、错误答案列表和来源。而在multiple_choice配置中,每个问题都提供了四个选项,模型需要从中选择正确的答案。 这个数据集的目的是为了测试语言模型在真实性方面的弱点,而不是测试模型在有用任务上的表现。研究发现,最大的模型通常是最不真实的,这与其他NLP任务不同,在其他任务中,模型的性能随着模型大小的增加而提高。TruthfulQA的数据集提供了一个重要的工具,用于评估和改进语言模型在生成真实和可靠信息方面的能力。

    多彩吉安红色旅游网站-JAVA-基于springBoot多彩吉安红色旅游网站的设计与实现

    多彩吉安红色旅游网站-JAVA-基于springBoot多彩吉安红色旅游网站的设计与实现

    基于servlet+jsp+mysql实现的影视管理系统课程设计

    【作品名称】:基于servlet+jsp+mysql实现的影视管理系统【课程设计】 【适用人群】:适用于希望学习不同技术领域的小白或进阶学习者。可作为毕设项目、课程设计、大作业、工程实训或初期项目立项。 【项目介绍】: 基于servlet+jsp+mysql实现的影视管理系统【课程设计】 基于servlet+jsp+mysql实现的影视管理系统【课程设计】 Java Web课程设计,基于servlet+jsp+ajax+mysql做的影视管理系统 运行环境: Tomcat 9.0 JDK 1.8 MySQL 8.0 后台管理账号密码均为:root,项目依赖:lib 目录 【资源声明】:本资源作为“参考资料”而不是“定制需求”,代码只能作为参考,不能完全复制照搬。需要有一定的基础看懂代码,自行调试代码并解决报错,能自行添加功能修改代码。

    渗透测试人员的 Python 工具.zip

    渗透测试人员的 Python 工具渗透测试人员的 Python 工具如果你参与漏洞研究、逆向工程或渗透测试,我建议尝试 Python编程语言。它有一套丰富的有用库和程序。本页列出了其中一些。列出的大多数工具都是用 Python 编写的,其他工具只是现有 C 库的 Python 绑定,即它们使这些库可轻松地在 Python 程序中使用。一些更激进的工具(渗透测试框架、蓝牙粉碎器、Web 应用程序漏洞扫描器、战争拨号器等)被排除在外,因为这些工具在德国的法律地位仍然不太明确——即使在最高法院作出裁决之后也是如此。这个列表显然是为了帮助白帽黑客,目前我更愿意谨慎行事。网络Scapy发送、嗅探、剖析和伪造网络数据包。可交互使用或作为库使用pypcap、 Pcapy和 pylibpcaplibpcap 的几种不同的 Python 绑定libdnet低级网络例程,包括接口查找和以太网帧传输dpkt快速、简单的数据包创建/解析,包含基本 TCP/IP 协议的定义Impacket制作和解码网络数据包。包括对 NMB 和 SMB 等高级协议的支持pynidslibnids

    quark(夸克)正版下载

    quark(夸克)正版下载

    ssm框架Java项目源码-企业员工岗前培训管理系统+vue毕设-大作业.zip

    ssm框架Java项目源码-企业员工岗前培训管理系统+vue毕设-大作业.zip是一个专为计算机相关专业学生和Java学习者设计的项目资源。该项目以企业员工岗前培训管理为背景,采用经典的SSM(Spring+SpringMVC+MyBatis)框架进行后端开发,确保系统的稳定性和可扩展性。同时,前端采用Vue.js框架,实现了前后端分离,提升了用户体验和开发效率。 该项目的主要功能包括员工信息管理、培训课程管理、培训进度跟踪、考试成绩记录与统计等。通过这些功能,系统能够帮助企业高效地管理员工的岗前培训过程,确保培训质量,提升员工技能水平。 此外,该项目不仅适合作为计算机专业学生的毕业设计题目,也适合Java学习者进行项目实战练习,通过实际操作,加深对SSM框架和Vue.js的理解,提升编程能力和解决问题的能力。

    汇聚【Python应用】【Python实训】【Python技术分享】等等.zip

    你是 Pythonista汇聚【从零单排】【实战项目】【数据科学】【自然语言处理】【计算机】【面试题系列】【大航海】【Python应用】【错题集】【技术沙龙】【内推渠道】 】等等【人人都是Pythonista】由公众号【Python专栏】推出,请认准唯一标识请仔细阅读本文档,尤其是使用说明。目录说明计算机视觉计算机视觉DataScience数据科学作业所有的作业都提交在这个目录下,每个人创建属于自己的独立目录HR内推渠道Interview_Questions: 面试题集KnowledgeShare干货分享LearnFromZero从零单排NLP自然语言处理、自然语言处理OnePiece大航海PracticeProject实战项目PythonExercisePython练习、应用资源资源目录TechSalon技术沙龙WeeklyReport每周新鲜事、分享好项目、好资源使用说明命名规范文件夹命名规范必须为英文全部小写单词之间用下划线分割,例如nagios_check_tomcat第一个单词代表项目涉及应用,若有多个采用简写,最多2

    基于java的学生社团管理系统设计与实现.docx

    基于java的学生社团管理系统设计与实现.docx

    学习微服务框架SpringCloud的一些示例代码.zip

    学习微服务框架SpringCloud的一些示例代码

Global site tag (gtag.js) - Google Analytics