convertservlet.java

关于中间件学习的一些例子

package com.j2ee.ejb;

import java.io.*;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.rmi.*;
import javax.naming.*;
import com.j2ee.interfaces.*;

public class ConvertServlet extends HttpServlet {

	private static final String CONTENT_TYPE = "text/html";
	
	/**
	 * Constructor of the object.
	 */
	public ConvertServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		String source = (String)request.getParameter("source");
		String page="";
		if(source.length()==0 || source.equals(""))
			page = "error.html";
		else{
			try{
				ConvertCharacterHome home = 
					(ConvertCharacterHome)PortableRemoteObject.narrow(
							new InitialContext().lookup("ConvertCharacter"),ConvertCharacterHome.class);
				ConvertCharacter convert = home.create();
				String result = convert.convert(source);
				page = "convert.jsp?result=" + result;
			}
			catch(Exception e){
				System.out.println(e.getMessage());
			}
		}
		
		RequestDispatcher d = request.getRequestDispatcher(page);
		d.forward(request, response);
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		doGet(request,response);
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}