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Tomcat example source code file (GeneratorApache2.java)

This example Tomcat source code file (GeneratorApache2.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Tomcat tags/keywords

allowoverride, deny, dom, file, io, jkuriset, jkuriset, location, location, node, printwriter, sethandler, string, string, util, vector, vector

The Tomcat GeneratorApache2.java source code

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.apache.jk.config;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Vector;

import org.w3c.dom.Node;


/* Naming conventions:

JK_CONF_DIR == serverRoot/work  ( XXX /jkConfig ? )

- Each vhost has a sub-dir named after the canonycal name

- For each webapp in a vhost, there is a separate WEBAPP_NAME.jkmap

- In httpd.conf ( or equivalent servers ), in each virtual host you
should "Include JK_CONF_DIR/VHOST/jk_apache.conf". The config
file will contain the Alias declarations and other rules required
for apache operation. Same for other servers. 

- WebXml2Jk will be invoked by a config tool or automatically for each
webapp - it'll generate the WEBAPP.jkmap files and config fragments.

WebXml2Jk will _not_ generate anything else but mappings.
It should _not_ try to guess locations or anything else - that's
another components' job.

*/

/**
 *
 * @author Costin Manolache
 */
public class GeneratorApache2 implements WebXml2Jk.MappingGenerator {
    WebXml2Jk wxml;
    String vhost;
    String cpath;
    String worker;
    PrintWriter out;
    
    public void setWebXmlReader(WebXml2Jk wxml ) {
        this.wxml=wxml;
        vhost=wxml.vhost;
        cpath=wxml.cpath;
        worker=wxml.worker;
    }

    public void generateStart() throws IOException {
        File base=wxml.getJkDir();
        File outF=new File(base, "jk2.conf");
        out=new PrintWriter( new FileWriter( outF ));

        out.println("# Must be included in a virtual host context for " + vhost );

        out.println("Alias " + cpath + " \"" + wxml.docBase + "\"");
        out.println("<Directory \"" + wxml.docBase + "\" >");
        out.println("  Options Indexes FollowSymLinks");
        generateMimeMapping( out );
        generateWelcomeFiles( out);

        // If we use this instead of extension mapping for jsp we can avoid most
        // jsp security problems.
        out.println("  AddHandler jakarta-servlet2 .jsp");
        out.println("</Directory>");
        out.println();
        
        out.println("<Location \"" + cpath + "/WEB-INF\" >");
        out.println("  AllowOverride None");
        out.println("  Deny from all");
        out.println("</Location>");
        out.println();
        out.println("<Location \"" + cpath + "/META-INF\" >");
        out.println("  AllowOverride None");
        out.println("  Deny from all");
        out.println("</Location>");
        out.println();
    }

    private void generateWelcomeFiles( PrintWriter out ) {
        Vector wf= wxml.getWellcomeFiles();
        out.print("  DirectoryIndex ");
        for( int i=0; i<wf.size(); i++ ) {
            out.print( " " + (String)wf.elementAt(i));
        }
        out.println();
    }
    
    private void generateMimeMapping( PrintWriter out ) {
        Node webN=wxml.getWebXmlNode();
        for( Node mapN=WebXml2Jk.getChild( webN, "mime-mapping" );
             mapN != null; mapN = WebXml2Jk.getNext( mapN ) ) {
            String ext=WebXml2Jk.getChildContent( mapN, "extension" );
            String type=WebXml2Jk.getChildContent( mapN, "mime-type" );

            out.println("  AddType " + type + " " + ext );
        }
        

    }

    public void generateEnd() {
        out.close();
    }
    
    public void generateServletMapping( String servlet, String url ) {
        out.println( "<Location \"" + cpath + url + "\" >");
        out.println( "  SetHandler jakarta-servlet2" );
        out.println( "  JkUriSet group " + worker );
        out.println( "  JkUriSet servlet " +  servlet);
        out.println( "  JkUriSet host " +  vhost );
        out.println( "  JkUriSet context " +  cpath );
        out.println( "</Location>");
        out.println();
    }

    public void generateFilterMapping( String servlet, String url ) {
        out.println( "<Location \"" + cpath + url + "\" >");
        out.println( "  SetHandler jakarta-servlet2" );
        out.println( "  JkUriSet group " + worker );
        out.println( "  JkUriSet servlet " +  servlet);
        out.println( "  JkUriSet host " +  vhost );
        out.println( "  JkUriSet context " +  cpath );
        out.println( "</Location>");
        out.println();
    }

    public void generateLoginConfig( String loginPage,
                                     String errPage, String authM ) {
        out.println( "<Location \"" + cpath + loginPage + "\" >");
        out.println( "  SetHandler jakarta-servlet2" );
        out.println( "  JkUriSet group " + worker );
        out.println( "  JkUriSet host " +  vhost );
        out.println( "  JkUriSet context " +  cpath );
        out.println( "</Location>");
        out.println();
    }

    public void generateErrorPage( int err, String location ) {
        
    }

    // XXX Only if BASIC/DIGEST and 'integrated auth'
    public void generateConstraints( Vector urls, Vector methods, Vector roles, boolean isSSL ) {
        for( int i=0; i<urls.size(); i++ ) {
            String url=(String)urls.elementAt(i);

            out.println( "<Location \"" + cpath + url + "\" >");

            if( methods.size() > 0 ) {
                out.print("  <Limit ");
                for( int j=0; j<methods.size(); j++ ) {
                    String m=(String)methods.elementAt(j);
                    out.print( " " +  m);
                }
                out.println(  " >" );
            }

            out.println( "    AuthType basic" );
            out.print( "    Require group " );
            for( int j=0; j<roles.size(); j++ ) {
                String role=(String)roles.elementAt(j);
                out.print( " " +  role);
            }
            out.println();

            if( methods.size() > 0 ) {
                out.println("  </Limit>");
            }
            
            out.println( "</Location>");
        }
    }
}

Other Tomcat examples (source code examples)

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