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DWR is easy Ajax for Java. It makes it simple to call Java code directly from Javascript. It gets rid of almost all the boilerplate code between the web browser and your Java code. This version 4.0.2 works with Jakarta Servlet 4.0.2.

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package org.directwebremoting.ui.servlet;

import java.io.IOException;

import org.directwebremoting.servlet.AmdModule;

/**
 * A Handler that supports requests for util.js compatible with the AMD format.
 * @author Mike Wilson
 */
public class AmdUtilHandler extends BaseUtilHandler
{
    /* (non-Javadoc)
     * @see org.directwebremoting.servlet.FileJavaScriptHandler#generateTemplate(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
    @Override
    protected String generateTemplate(String contextPath, String servletPath, String pathInfo) throws IOException
    {
        AmdModule mod = new AmdModule(contextPath, servletPath);
        final StringBuilder buf = new StringBuilder();

        // Local variable to capture the DWR namespace
        buf.append("var dwr;\n");

        // Add standard util.js contents
        buf.append("\n");
        buf.append("// standard util.js\n");
        buf.append("\n");
        buf.append(super.generateTemplate(contextPath, servletPath, pathInfo));
        buf.append("\n");
        buf.append("// end standard util.js\n");
        buf.append("\n");

        // Alias allowing dwr.* or dwr.util.* to be used
        buf.append("dwr.util.util = dwr.util;\n");

        buf.append("return dwr.util;\n");

        mod.addContent(buf.toString());

        return mod.toString();
    }
}




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