servlet简易开发（1）

servlet请求页面：一直要注意路径问题，如果写成是 /SimpleServlet则会到http://localhost:8080/SimpleServlet进行查找，而需要加 "."代表当前路径下查找就可以了。

web.xml配置信息如下。

<servlet>
    <servlet-name>SimpleServlet</servlet-name>
    <servlet-class>com.lyp.SimpleServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>SimpleServlet</servlet-name>
    <url-pattern>/SimpleServlet</url-pattern>
</servlet-mapping>

SimpleServlet的配置信息

package com.lyp;

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

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class SimpleServlet
 */
public class SimpleServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public SimpleServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		response.setContentType("text/html");
		response.setCharacterEncoding("gb2312");
		PrintWriter out=response.getWriter();
		out.print("<html>");
		out.print("<head><title>nihao</title></head>");
		out.print("<body>");
		out.print("serverlet 实例<br/>");
		out.print(this.getClass());
		out.print("</body></html>");
		out.flush();
		out.close();
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request,response);
	}

}

posted on 2012-12-30 11:08 duhuawei 阅读(170) 评论(0) 收藏举报