//5.2.2
public class SimpleServlet extends HttpServlet { 
public void doGet(HttpServletRequest req， HttpServletResponse res) 
throws ServletException， IOException 
{ 
// 首先設(shè)置頭部 
res.setContentType("text/html"); 
// 用 writer方法返回響應(yīng)數(shù)據(jù) 
PrintWriter out = res。getWriter(); 
out.println(""); 
out.println("SimpleServlet Output"); 
out.println("This is output is from SimpleServlet。"); 
out.println(""); 
out.close(); 
} 
public String getServletInfo() { 
return "A simple Servlet"; 
} 
}