Servlet简单的例子
1 servlet继承于HttpServlet 简单使用如下:
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2 代码
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package com.test.action;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 继承与 HttpServlet 重写 doGet() doPost()方法 * servlet可以直接返回 ，即获取PrintWriter输出流，在PrintWriter中输出字符串 * servlet也可以返回jsp，即response.sendRedirect(jspPath) * * @author 姓名 工号 * @version [版本号, 2012-10-14] * @see [相关类/方法] * @since [产品/模块版本] */public class TestServlet extends HttpServlet{@Overrideprotected void doGet(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException{//直接返回//resp.setContentType("text/html;charset=utf-8");//PrintWriter pw = resp.getWriter();//pw.println("<html><head>");//pw.println("<title>testServlet</title>");//pw.println("</head><body>this is a testServlet example!");//pw.println("</body></html>");//pw.close();//返回jspresp.sendRedirect("servlet.jsp");}@Overrideprotected void doPost(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException{// TODO Auto-generated method stubdoGet(req, resp);}}??
3 web.xml配置
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<servlet> <servlet-name>TestServlet</servlet-name> <servlet-class>com.test.action.TestServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>TestServlet</servlet-name> <url-pattern>/testServlet</url-pattern> </servlet-mapping>
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4 访问
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http://localhost:8080/test/testServlet?工程路径 + servlet(url-pattern)