jspcmojo.java

jetty SERVER連接資料庫用的軟體

//========================================================================
//$Id: JspcMojo.java 4687 2009-03-02 09:07:46Z janb $
//Copyright 2006 Mort Bay Consulting Pty. Ltd.
//------------------------------------------------------------------------
//Licensed 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.mortbay.jetty.jspc.plugin;

import org.apache.jasper.JspC;
import org.apache.maven.artifact.Artifact;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.project.MavenProject;
import org.codehaus.plexus.util.FileUtils;
import org.codehaus.plexus.util.StringUtils;
import org.mortbay.util.IO;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.FilenameFilter;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

/**
 * <p>
 * This goal will compile jsps for a webapp so that they can be included in a
 * war.
 * </p>
 * <p>
 * At runtime, the plugin will use the jsp2.0 jspc compiler if you are running
 * on a 1.4 or lower jvm. If you are using a 1.5 jvm, then the jsp2.1 compiler
 * will be selected. (this is the same behaviour as the <a
 * href="http://jetty.mortbay.org/maven-plugin">jetty plugin</a> for executing
 * webapps).
 * </p>
 * <p>
 * Note that the same java compiler will be used as for on-the-fly compiled
 * jsps, which will be the Eclipse java compiler.
 * </p>
 * 
 * <p>
 * See <a
 * href="http://docs.codehaus.org/display/JETTY/Maven+Jetty+Jspc+Plugin">Usage
 * Guide</a> for instructions on using this plugin.
 * </p>
 * 
 * @author janb
 * 
 * @goal jspc
 * @phase process-classes
 * @requiresDependencyResolution compile
 * @description Runs jspc compiler to produce .java and .class files
 */
public class JspcMojo extends AbstractMojo
{
    public static final String END_OF_WEBAPP = "</web-app>";


    /**
     * The maven project.
     * 
     * @parameter expression="${project}"
     * @required
     * @readonly
     */
    private MavenProject project;

    /**
     * File into which to generate the &lt;servlet&gt; and
     * &lt;servlet-mapping&gt; tags for the compiled jsps
     * 
     * @parameter expression="${basedir}/target/webfrag.xml"
     */
    private String webXmlFragment;

    /**
     * Optional. A marker string in the src web.xml file which indicates where
     * to merge in the generated web.xml fragment. Note that the marker string
     * will NOT be preserved during the insertion. Can be left blank, in which
     * case the generated fragment is inserted just before the &lt;/web-app&gt;
     * line
     * 
     * @parameter
     */
    private String insertionMarker;

    /**
     * Merge the generated fragment file with the web.xml from
     * webAppSourceDirectory. The merged file will go into the same directory as
     * the webXmlFragment.
     * 
     * @parameter expression="true"
     */
    private boolean mergeFragment;

    /**
     * The destination directory into which to put the compiled jsps.
     * 
     * @parameter expression="${project.build.outputDirectory}"
     */
    private String generatedClasses;

    /**
     * Controls whether or not .java files generated during compilation will be
     * preserved.
     * 
     * @parameter expression="false"
     */
    private boolean keepSources;

    /**
     * Default root package for all generated classes
     * 
     * @parameter expression="jsp"
     */
    private String packageRoot;

    /**
     * Root directory for all html/jsp etc files
     * 
     * @parameter expression="${basedir}/src/main/webapp"
     * @required
     */
    private String webAppSourceDirectory;


    /**
     * The comma separated list of patterns for file extensions to be processed. By default
     * will include all .jsp and .jspx files.
     * 
     * @parameter default-value="**\/*.jsp, **\/*.jspx"
     */
    private String includes;

    /**
     * The comma separated list of file name patters to exclude from compilation.
     * 
     * @parameter default_value="**\/.svn\/**";
     */
    private String excludes;

    /**
     * The location of the compiled classes for the webapp
     * 
     * @parameter expression="${project.build.outputDirectory}"
     */
    private File classesDirectory;

    /**
     * Whether or not to output more verbose messages during compilation.
     * 
     * @parameter expression="false";
     */
    private boolean verbose;

    /**
     * If true, validates tlds when parsing.
     * 
     * @parameter expression="false";
     */
    private boolean validateXml;

    /**
     * The encoding scheme to use.
     * 
     * @parameter expression="UTF-8"
     */
    private String javaEncoding;

    /**
     * Whether or not to generate JSR45 compliant debug info
     * 
     * @parameter expression="true";
     */
    private boolean suppressSmap;

    /**
     * Whether or not to ignore precompilation errors caused by jsp fragments.
     * 
     * @parameter expression="false"
     */
    private boolean ignoreJspFragmentErrors;

    /**
     * Allows a prefix to be appended to the standard schema locations so that
     * they can be loaded from elsewhere.
     * 
     * @parameter
     */
    private String schemaResourcePrefix;
    

    public void execute() throws MojoExecutionException, MojoFailureException
    {
        if (getLog().isDebugEnabled())
        {
            getLog().info("verbose=" + verbose);
            getLog().info("webAppSourceDirectory=" + webAppSourceDirectory);
            getLog().info("generatedClasses=" + generatedClasses);
            getLog().info("webXmlFragment=" + webXmlFragment);
            getLog().info("validateXml=" + validateXml);
            getLog().info("packageRoot=" + packageRoot);
            getLog().info("javaEncoding=" + javaEncoding);
            getLog().info("insertionMarker="+ (insertionMarker == null || insertionMarker.equals("") ? END_OF_WEBAPP : insertionMarker));
            getLog().info("keepSources=" + keepSources);
            getLog().info("mergeFragment=" + mergeFragment);
            getLog().info("suppressSmap=" + suppressSmap);
            getLog().info("ignoreJspFragmentErrors=" + ignoreJspFragmentErrors);
            getLog().info("schemaResourcePrefix=" + schemaResourcePrefix);
        }
        try
        {
            prepare();
            compile();
            cleanupSrcs();
            mergeWebXml();
        }
        catch (Exception e)
        {
            throw new MojoFailureException(e, "Failure processing jsps","Failure processing jsps");
        }
    }

    public void compile() throws Exception
    {
        ClassLoader currentClassLoader = Thread.currentThread()