Admin: 1 версия

2010-06-01T06:11:28Z

1 версия

в 18:01, 31 мая 2010

2010-05-31T18:01:43Z

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== Get Base Url for servlet ==



<source lang="java">

/*
* Copyright (C) 2006 Methodhead Software LLC. All rights reserved.
*
* This file is part of TransferCM.
*
* TransferCM is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* TransferCM is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* TransferCM; if not, write to the Free Software Foundation, Inc., 51 Franklin St,
* Fifth Floor, Boston, MA 02110-1301 USA
*/

import javax.servlet.http.HttpServletRequest;
import java.io.File;
public class ServletUtils {
// constructors /////////////////////////////////////////////////////////////
// constants ////////////////////////////////////////////////////////////////
// classes //////////////////////////////////////////////////////////////////
// methods //////////////////////////////////////////////////////////////////
/**
* NOT UNIT TESTED Returns the URL (including query parameters) minus the scheme, host, and
* context path. This method probably be moved to a more general purpose
* class.
*/
public static String getRelativeUrl(
HttpServletRequest request ) {
String baseUrl = null;
if ( ( request.getServerPort() == 80 ) ||
( request.getServerPort() == 443 ) )
baseUrl =
request.getScheme() + "://" +
request.getServerName() +
request.getContextPath();
else
baseUrl =
request.getScheme() + "://" +
request.getServerName() + ":" + request.getServerPort() +
request.getContextPath();
StringBuffer buf = request.getRequestURL();
if ( request.getQueryString() != null ) {
buf.append( "?" );
buf.append( request.getQueryString() );
}
return buf.substring( baseUrl.length() );
}
/**
* NOT UNIT TESTED Returns the base url (e.g, <tt>http://myhost:8080/myapp</tt>) suitable for
* using in a base tag or building reliable urls.
*/
public static String getBaseUrl( HttpServletRequest request ) {
if ( ( request.getServerPort() == 80 ) ||
( request.getServerPort() == 443 ) )
return request.getScheme() + "://" +
request.getServerName() +
request.getContextPath();
else
return request.getScheme() + "://" +
request.getServerName() + ":" + request.getServerPort() +
request.getContextPath();
}
/**
* Returns the file specified by <tt>path</tt> as returned by
* <tt>ServletContext.getRealPath()</tt>.
*/
public static File getRealFile(
HttpServletRequest request,
String path ) {
return
new File( request.getSession().getServletContext().getRealPath( path ) );
}
// properties ///////////////////////////////////////////////////////////////
// attributes ///////////////////////////////////////////////////////////////
}

</source>



== Get Relative Url for servlet ==



<source lang="java">

/*
* Copyright (C) 2006 Methodhead Software LLC. All rights reserved.
*
* This file is part of TransferCM.
*
* TransferCM is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* TransferCM is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* TransferCM; if not, write to the Free Software Foundation, Inc., 51 Franklin St,
* Fifth Floor, Boston, MA 02110-1301 USA
*/

import javax.servlet.http.HttpServletRequest;
import java.io.File;
public class ServletUtils {
// constructors /////////////////////////////////////////////////////////////
// constants ////////////////////////////////////////////////////////////////
// classes //////////////////////////////////////////////////////////////////
// methods //////////////////////////////////////////////////////////////////
/**
* NOT UNIT TESTED Returns the URL (including query parameters) minus the scheme, host, and
* context path. This method probably be moved to a more general purpose
* class.
*/
public static String getRelativeUrl(
HttpServletRequest request ) {
String baseUrl = null;
if ( ( request.getServerPort() == 80 ) ||
( request.getServerPort() == 443 ) )
baseUrl =
request.getScheme() + "://" +
request.getServerName() +
request.getContextPath();
else
baseUrl =
request.getScheme() + "://" +
request.getServerName() + ":" + request.getServerPort() +
request.getContextPath();
StringBuffer buf = request.getRequestURL();
if ( request.getQueryString() != null ) {
buf.append( "?" );
buf.append( request.getQueryString() );
}
return buf.substring( baseUrl.length() );
}
/**
* NOT UNIT TESTED Returns the base url (e.g, <tt>http://myhost:8080/myapp</tt>) suitable for
* using in a base tag or building reliable urls.
*/
public static String getBaseUrl( HttpServletRequest request ) {
if ( ( request.getServerPort() == 80 ) ||
( request.getServerPort() == 443 ) )
return request.getScheme() + "://" +
request.getServerName() +
request.getContextPath();
else
return request.getScheme() + "://" +
request.getServerName() + ":" + request.getServerPort() +
request.getContextPath();
}
/**
* Returns the file specified by <tt>path</tt> as returned by
* <tt>ServletContext.getRealPath()</tt>.
*/
public static File getRealFile(
HttpServletRequest request,
String path ) {
return
new File( request.getSession().getServletContext().getRealPath( path ) );
}
// properties ///////////////////////////////////////////////////////////////
// attributes ///////////////////////////////////////////////////////////////
}

</source>



== Servlet: URL redirect ==



<source lang="java">

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class UrlRedirect extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
String contextPath= "http://www.jexp.ru";
response.sendRedirect(response.encodeRedirectURL(contextPath + "/maps"));
}
}

</source>



== Servlet: URL rewrite ==



<source lang="java">

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class UrlRewrite extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
response.setContentType("text/html");
java.io.PrintWriter out = response.getWriter();
String contextPath = request.getContextPath();
String encodedUrl = response.encodeURL(contextPath + "/default.jsp");
out.println("<html>");
out.println("<head>");
out.println("<title>URL Rewriter</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>This page will use URL rewriting if necessary</h2>");
out.println("Go to the default.jsp page .");
out.println("</body>");
out.println("</html>");
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
doGet(request, response);
}
}

</source>

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Java/Servlets/URL - История изменений

Admin: 1 версия

в 18:01, 31 мая 2010