一个Servlet来替代多个Servlet_(2)

曾经终败给现在 2024-02-17 16:51 50阅读 0赞

一、web.xml配置文件

<servlet>
        <description>This is the description of my J2EE component</description>
        <display-name>This is the display name of my J2EE component</display-name>
        <servlet-name>MoreServlet</servlet-name>
        <servlet-class>com.hlx.servlet.MoreServlet</servlet-class>
      </servlet>
    
    
      <servlet-mapping>
        <servlet-name>MoreServlet</servlet-name>
        <url-pattern>/more.do</url-pattern>
      </servlet-mapping>

二、JSP页面

1)add.jsp

2) reg.jsp

三、Servlet页面

public void doPost(HttpServletRequest request, HttpServletResponse response)
    			throws ServletException, IOException {
    
    		response.setContentType("text/html;charset=utf-8");
    		PrintWriter out = response.getWriter();
    
    		//请求方法
    		String method = request.getParameter("method");
    		//判断是哪个action哦!
    		if ("add".equals(method)) {
    			this.add(request, response);
    		} else if ("reg".equals(method)) {
    			this.reg(request, response);
    		}
    		out.flush();
    		out.close();
    	}
    
    	/**
    	 * 添加方法
    	 * 
    	 */
    	public void add(HttpServletRequest request, HttpServletResponse response)
    			throws ServletException, IOException {
    		response.setContentType("text/html;charset=utf-8");
    		PrintWriter out = response.getWriter();
    		out.println("this is add Page!");
    		out.flush();
    		out.close();
    	}
    
    	/*
    	 * 注册方法
    	 */
    	public void reg(HttpServletRequest request, HttpServletResponse response)
    			throws ServletException, IOException {
    
    		response.setContentType("text/html;charset=utf-8");
    		PrintWriter out = response.getWriter();
    		out.println("this is reg Page!");
    		out.flush();
    		out.close();
    	}

总之：通过参数方法来判断是哪个action！