📄 defaultindexprocessor.java

📁 很不错的js应用框架
💻 JAVA
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/*
 * Copyright 2005 Joe Walker
 *
 * 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 uk.ltd.getahead.dwr.impl;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import uk.ltd.getahead.dwr.Creator;
import uk.ltd.getahead.dwr.CreatorManager;
import uk.ltd.getahead.dwr.Processor;
import uk.ltd.getahead.dwr.util.Logger;

/**
 * Create a debug mode only index page to all the available classes
 * @author Joe Walker [joe at getahead dot ltd dot uk]
 */
public class DefaultIndexProcessor implements Processor
{
    /* (non-Javadoc)
     * @see uk.ltd.getahead.dwr.Handler#handle(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
    public void handle(HttpServletRequest req, HttpServletResponse resp) throws IOException
    {
        if (!creatorManager.isDebug())
        {
            log.warn("Failed attempt to access index page outside of debug mode. Set the debug init-parameter to true to enable."); //$NON-NLS-1$
            resp.sendError(HttpServletResponse.SC_FORBIDDEN);
            return;
        }

        resp.setContentType(HtmlConstants.MIME_HTML);

        PrintWriter out = resp.getWriter();

        out.println("<html>"); //$NON-NLS-1$
        out.println("<head><title>DWR Test Index</title></head>"); //$NON-NLS-1$
        out.println("<body>"); //$NON-NLS-1$

        out.println("<h2>Classes known to DWR:</h2>"); //$NON-NLS-1$
        out.println("<ul>"); //$NON-NLS-1$
        for (Iterator it = creatorManager.getCreatorNames().iterator(); it.hasNext();)
        {
            String name = (String) it.next();
            Creator creator = creatorManager.getCreator(name);
            out.println("<li><a href='" + req.getContextPath() + req.getServletPath() + HtmlConstants.PATH_TEST + name + "'>" + name + "</a> (" + creator.getType().getName() + ")</li>"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
        }
        out.println("</ul>"); //$NON-NLS-1$

        out.println("<h2>Other Links</h2>"); //$NON-NLS-1$
        out.println("<ul>"); //$NON-NLS-1$
        out.println("<li>Up to <a href='" + req.getContextPath() + "/'>top level of web app</a>.</li>"); //$NON-NLS-1$ //$NON-NLS-2$
        out.println("</ul>"); //$NON-NLS-1$

        out.println("</body></html>"); //$NON-NLS-1$
        out.flush();
    }

    /**
     * Accessor for the DefaultCreatorManager that we configure
     * @param creatorManager The new DefaultConverterManager
     */
    public void setCreatorManager(CreatorManager creatorManager)
    {
        this.creatorManager = creatorManager;
    }

    /**
     * How we create new beans
     */
    protected CreatorManager creatorManager = null;

    /**
     * The log stream
     */
    private static final Logger log = Logger.getLogger(DefaultIndexProcessor.class);
}
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