📄 serverinfo.java

📁 jsp 应用开发技术光盘是《jsp应用开发技术》这本书的源代码

💻 JAVA

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package ch16;

import java.io.*;
import java.util.*;
import javax.servlet.*;

/**
 * 	获取服务器端信息的Servlet
 */
public class ServerInfo extends GenericServlet {

	public void service(ServletRequest request, ServletResponse response)
		throws ServletException, IOException {
		response.setContentType("text/html;charset=GB2312");
		PrintWriter out = response.getWriter();
		ServletContext sc = getServletContext();

		out.println("<html>");
		out.println("<body>");
		out.println("<head>");
		out.println("<title>获取服务器端信息</title>");
		out.println("</head>");
		out.println("<body>");
		out.println("<h2>服务器端信息：</h2>");
		out.println("<table width=\"500\" border=\"1\">");

		out.println("<tr>");
		out.println("<td width=\"175\">站点名</td>");
		out.println("<td width=\"325\">" + request.getServerName() + "</td>");
		out.println("</tr>");

		out.println("<tr>");
		out.println("<td>端口号</td>");
		out.println("<td>" + request.getServerPort() + "</td>");
		out.println("</tr>");
		
		out.println("<tr>");
		out.println("<td>服务器类型</td>");
		out.println("<td>" + sc.getServerInfo() + "</td>");
		out.println("</tr>");

		out.println("<tr>");
		out.println("<td>支持Servlet版本</td>");
		out.println("<td>"+sc.getMajorVersion()+"."+sc.getMinorVersion()+"</td>");
		out.println("</tr>");
		
		out.println("<tr>");
		out.println("<td>服务器属性</td>");
		out.println("<td>");
		// 获得服务器属性集合
		Enumeration attributes = sc.getAttributeNames();
		while (attributes.hasMoreElements()) {
			String name = (String)attributes.nextElement();
			out.println(name);
		}
		out.println("</td>");
		out.println("</tr>");		
		
		out.println("</table>");
		out.println("</body>");
		out.println("</html>");
	}
	
}

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