`
hanyi366
  • 浏览: 289296 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

    电子商务之价格优化算法:梯度下降:机器学习在价格优化中的角色.docx

    电子商务之价格优化算法:梯度下降:机器学习在价格优化中的角色.docx

    ToadforOracle与Oracle数据库版本兼容性教程.docx

    ToadforOracle与Oracle数据库版本兼容性教程.docx

    browser360-cn-stable-13.3.1016.4-1-amd64.deb

    360浏览器银河麒麟版 for X86 适配兆芯 / 海光 / intel / AMD CPU

    基于React.js和Material-UI个人作品集网站模板(附源码+说明文档).zip

    使用React.js构建,提供多种主题可供选择,并且易于定制。该项目旨在帮助开发者和自由职业者创建自己的个性化投资组合。 主要功能点 多种主题可供选择,包括绿色、黑白、蓝色、红色、橙色、紫色、粉色和黄色 易于定制,可以在src/data文件夹中更新个人信息 包含主页、关于、简历、教育、技能、经验、项目、成就、服务、推荐信、博客和联系等多个部分 支持通过Google表单收集联系信息 提供SEO优化建议 支持多种部署方式,如Netlify、Firebase、Heroku和GitHub Pages 技术栈主要 React.js Material-UI Axios React-fast-marquee React-helmet React-icons React-reveal React-router-dom React-router-hash-link React-slick Slick-carousel Validator

    中小型企业财务管理系统 SSM毕业设计 附带论文.zip

    中小型企业财务管理系统 SSM毕业设计 附带论文 启动教程:https://www.bilibili.com/video/BV1GK1iYyE2B

    apsw-3.38.5.post1-cp39-cp39-win_amd64.whl.rar

    python whl离线安装包 pip安装失败可以尝试使用whl离线安装包安装 第一步 下载whl文件,注意需要与python版本配套 python版本号、32位64位、arm或amd64均有区别 第二步 使用pip install XXXXX.whl 命令安装,如果whl路径不在cmd窗口当前目录下,需要带上路径 WHL文件是以Wheel格式保存的Python安装包, Wheel是Python发行版的标准内置包格式。 在本质上是一个压缩包,WHL文件中包含了Python安装的py文件和元数据,以及经过编译的pyd文件, 这样就使得它可以在不具备编译环境的条件下,安装适合自己python版本的库文件。 如果要查看WHL文件的内容,可以把.whl后缀名改成.zip,使用解压软件(如WinRAR、WinZIP)解压打开即可查看。 为什么会用到whl文件来安装python库文件呢? 在python的使用过程中,我们免不了要经常通过pip来安装自己所需要的包, 大部分的包基本都能正常安装,但是总会遇到有那么一些包因为各种各样的问题导致安装不了的。 这时我们就可以通过尝试去Python安装包大全中(whl包下载)下载whl包来安装解决问题。

    电子商务之价格优化算法:线性回归:价格优化策略实施.docx

    电子商务之价格优化算法:线性回归:价格优化策略实施.docx

    工业数字化转型的关键技术及其应用场景解析

    内容概要:报告详细介绍了企业数字化转型的驱动因素、数字化转型方案分类及其应用场景,重点关注了云计算、超连接、数字孪生、人工智能、分布式账本、增材制造、人机接口、数据共享、工业物联网等关键技术。这些技术不仅支持了企业的运营效率提升和业务模式创新,也为实现更快、更开放、更高效的数字化转型提供了支撑。报告最后提出了企业实施数字化转型的六个步骤。 适合人群:企业高级管理人员、技术人员、咨询顾问,以及对工业数字化转型感兴趣的读者。 使用场景及目标:帮助企业制定和实施数字化转型策略,优化运营模式,提升业务效率,增强市场竞争力。同时,也可作为政府部门、研究机构和行业协会的参考文献。 其他说明:报告中提到的关键技术及其应用场景对企业数字化转型具有重要的指导意义,特别是对于那些希望通过数字化转型实现业务创新和升级的企业。

    基于java的线上选课系统的设计与实现答辩PPT.pptx

    基于java的线上选课系统的设计与实现答辩PPT.pptx

    原版aggdraw-1.3.15-cp311-cp311-win_arm64.whl-下载即用直接pip安装.zip

    安装前的准备 1、安装Python:确保你的计算机上已经安装了Python。你可以在命令行中输入python --version或python3 --version来检查是否已安装以及安装的版本。 个人建议:在anaconda中自建不同python版本的环境,方法如下(其他版本照葫芦画瓢): 比如创建python3.8环境,anaconda命令终端输入:conda create -n py38 python==3.8 2、安装pip:pip是Python的包管理工具,用于安装和管理Python包。你可以通过输入pip --version或pip3 --version来检查pip是否已安装。 安装WHL安装包 1、打开命令行(或打开anaconda命令行终端): 在Windows上,你可以搜索“cmd”或“命令提示符”并打开它。 在macOS或Linux上,你可以打开“终端”。 2、cd到whl文件所在目录安装: 使用cd命令导航到你下载的whl文件所在的文件夹。 终端输入:pip install xxx.whl安装即可(xxx.whl指的是csdn下载解压出来的whl) 3、等待安装完成: 命令行会显示安装进度,并在安装完成后返回提示符。 以上是简单安装介绍,小白也能会,简单好用,从此再也不怕下载安装超时问题。 使用过程遇到问题可以私信,我可以帮你解决! 收起

    电子商务之价格优化算法:贝叶斯定价:贝叶斯网络在电子商务定价中的应用.docx

    电子商务之价格优化算法:贝叶斯定价:贝叶斯网络在电子商务定价中的应用.docx

    IMG_20241105_235746.jpg

    IMG_20241105_235746.jpg

    基于java的毕业设计选题系统答辩PPT.pptx

    基于java的毕业设计选题系统答辩PPT.pptx

    专升本考试资料全套.7z

    专升本考试资料全套.7z

    Trustwave DbProtect:数据库活动监控策略制定.docx

    Trustwave DbProtect:数据库活动监控策略制定.docx

    VB程序实例-CD-ROM开关.zip

    基于VB的程序实例,可供参考学习使用

    课设毕设基于SpringBoot+Vue的教育资源共享平台源码可运行.zip

    本压缩包资源说明,你现在往下拉可以看到压缩包内容目录 我是批量上传的基于SpringBoot+Vue的项目,所以描述都一样;有源码有数据库脚本,系统都是测试过可运行的,看文件名即可区分项目~ |Java|SpringBoot|Vue|前后端分离| 开发语言:Java 框架:SpringBoot,Vue JDK版本:JDK1.8 数据库:MySQL 5.7+(推荐5.7,8.0也可以) 数据库工具:Navicat 开发软件: idea/eclipse(推荐idea) Maven包:Maven3.3.9+ 系统环境:Windows/Mac

    基于Thinkphp5框架的Java插件设计源码

    该源码项目是一款基于Thinkphp5框架的Java插件设计,包含114个文件,其中Java源文件60个,PNG图片32个,XML配置文件7个,GIF图片7个,Git忽略文件1个,LICENSE文件1个,Markdown文件1个,Xmind文件1个,Idea项目文件1个,以及JAR文件1个。

    数据库开发和管理最佳实践.pdf

    数据库开发和管理最佳实践.pdf

Global site tag (gtag.js) - Google Analytics