在浏览器输入:
点击提交按钮,Tomcat后台输出:control: aaa's value is : bbb页面显示结果:page: aaa's value is : bbb文件目录结构:test│ test.html│ └—WEB-INF │ web.xml └—classes SubmitServle.java SubmitServle.class(test.html):<form action="submit.do"><input type="textField" name="aaa" value="bbb" /><input type="submit" /></form>(web.xml):<?xml version="1.0" encoding="ISO-8859-1"?><web-app xmlns="" xmlns:xsi="" xsi:schemaLocation=" web-app_2_4.xsd" version="2.4"> <servlet> <servlet-name>submitServle</servlet-name> <servlet-class>SubmitServle</servlet-class> </servlet> <servlet-mapping> <servlet-name>submitServle</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping></web-app>源代码(SubmitServle.java):import java.io.IOException;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class SubmitServle extends HttpServlet { protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String aaa = request.getParameter("aaa"); System.out.println("control: aaa's value is : " + aaa); response.getOutputStream().println("page: aaa's value is : " + aaa);; }}另:test.html中的提交按钮被点击时,会将表单中的字段aaa以及它的值提交到submit.do去(提交的这一过程也可以用javaScript来写)。服务器接到这个请求,将解析web.xml文件中的内容,将转交给符合这一请求(*.do)的servlet--SubmitServlet处理。处理调用service方法,可以从request中取得参数aaa的值,然后打印出来。url pattern 应该和 form faction一致么??