Example: Creating a traversable integrated file system tree
(File three of three)

This example code, in conjunction with the code in the other two example files, displays an HTMLTree and FileListElement in a servlet. The three files in the example are:

Note: Read the Code example disclaimer for important legal information. 

////////////////////////////////////////////////////////////////////////////////
//
// This source is an example of using the IBM Toolbox for Java HTML
// package classes, which allow you to easily build HTML and File Lists.
//
////////////////////////////////////////////////////////////////////////////////

import java.io.PrintWriter;
import java.io.IOException;
import java.io.File;

import com.ibm.as400.access.AS400;
import com.ibm.as400.access.Trace;
import com.ibm.as400.access.IFSJavaFile;
import com.ibm.as400.util.html.HTMLMeta;
import com.ibm.as400.util.html.HTMLHeading;
import com.ibm.as400.util.html.HTMLConstants;
import com.ibm.as400.util.html.FileListElement;
import com.ibm.as400.util.html.*;

import javax.servlet.*;
import javax.servlet.http.*;

/**
 *  An example of using the FileListElement class in a servlet.
 **/
public class TreeList extends HttpServlet
{

    private AS400 sys_;

    /**
     *  Process the GET request.
     *  @param req The request.
     *  @param res The response.
     **/
    public void doGet(HttpServletRequest req, HttpServletResponse resp)
    throws ServletException, IOException
    {
        resp.setContentType("text/html");

        try
        {

            PrintWriter out = resp.getWriter();
            out.println("<html>\n");
            out.println(new HTMLMeta("Expires", "Mon, 02 Jan 1990 13:00:00 GMT"));
            out.println("<body>\n");

            // If the path parameter is not null, then the user has selected an element from
            // the FileTreeElement list in the navigation frame.
            if (req.getPathInfo() != null)
            {
                // Create a FileListElement passing in an AS400 system object and the Http servlet request.
                // The request will contain the necessary path information to list out the contents of 
                // the FileTreeElement (directory) selected.
                FileListElement fileList = new FileListElement(sys_, req);
                
                //  Alternately, create a FileListElement from a NetServer share name and share path.
                //
                //  FileListElement fileList = new FileListElement(sys_, req, "TreeShare", "/QIBM/ProdData/HTTP/Public/jt400");
                
                
                // Display the FileListElement contents.
                out.println(fileList.list());
            }
            else     // Display this HTMLHeading if no FileTreeElement has been selected.
            {
                HTMLHeading heading = new HTMLHeading(1,"An HTML File List Example");
                heading.setAlign(HTMLConstants.CENTER);

                out.println(heading.getTag());
            }

            out.println("</body>\n");
            out.println("</html>\n");
            out.close();    
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }

    }

    /**
      *  Process the POST request.
      *  @param req The request.
      *  @param res The response.
    **/
    public void doPost (HttpServletRequest req, HttpServletResponse res)
    throws ServletException, IOException
    {  
        res.setContentType("text/html");
        ServletOutputStream out = res.getOutputStream();

    }

    public void init(ServletConfig config)
    throws ServletException
    {
        super.init(config);

        // Create an AS400 object.
        sys_ = new AS400("mySystem", "myUID", "myPWD");
    }           
}