sampleservlet.java

精通Jboss——Ejb和Web Services开发精解的随书源代码

package com.liuyang.servlet.sample;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.security.Principal;
import java.util.Properties;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
 * @author liuyang
 * 
 * @web.servlet-init-param name="name"
 *                         value="value"
 * @web.servlet-mapping url-pattern="/*"
 * @web.servlet description="SampleServlet"
 *              display-name="SampleServlet"
 *              name="SampleServlet"
 * @web.security-role description = "role1"
 * 					  role-name = "role1"
 * 
 *
 */
public class SampleServlet extends HttpServlet {
	/* (non-Javadoc)
	 * @see javax.servlet.http.HttpServlet#doGet(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
	 */
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
		throws ServletException, IOException {
		resp.setContentType("text/html");
		Principal user = req.getUserPrincipal();
		/*Properties properties = new Properties();
		properties.load(new FileInputStream(base+File.separator+"users.properties"));
		properties.put("liuyang","icecream");
		properties.store(new FileOutputStream(base+File.separator+"users.properties"),null);

		Properties pros = new Properties();
		pros.load(new FileInputStream(base+File.separator+"roles.properties"));
		pros.put("liuyang","role1");
		pros.put("liuyang.CallerPrincipal","caller_liuyang");		
		pros.store(new FileOutputStream(base+File.separator+"roles.properties"),null);
		*/
	

		resp.getWriter().println("<h2>"+user+", You visit SampleServlet</h2>");
	}
	/* (non-Javadoc)
	 * @see javax.servlet.http.HttpServlet#doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
	 */
	protected void doPost(HttpServletRequest req, HttpServletResponse resp)
		throws ServletException, IOException {
		resp.setContentType("text/html");
		resp.getWriter().println("<h2>You visit SampleServlet</h2>");
	}
	String base = "";
	/* (non-Javadoc)
	 * @see javax.servlet.Servlet#init(javax.servlet.ServletConfig)
	 */
	public void init(ServletConfig config) throws ServletException {
		super.init(config);
		base = config.getServletContext().getRealPath("/");
	}

}