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12-11-07 jsp小结

2012-11-07 22:50 337 查看

使用jsp+servlet完成一个表单验证，通过表单提交信息给Servlet，Servlet获取到信息后，处理，把信息放到request对象中，如果用户提交的姓名为空，不能跳转，否则，将信息全部显示出来。

1.jsp

<table align="center">

<tr><td>username</td><td></td></tr>

<tr><td>sex</td><td>boysgirl</td></tr>

<tr><td>addres</td><td></td></tr>

<tr><td>likes</td><td>singdancegame</td></tr>

<tr><td> </td><td></td></tr>

</table>

Servlet

package com.hbsi.Jsp;

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;

public class JSPServlet extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/html;charset=UTF-8");

PrintWriter out = response.getWriter();

String username = request.getParameter("username");

request.setAttribute("username", username);

if(username!=null){

String sex = request.getParameter("sex");

String xin = request.getParameter("xin");

String c1 = request.getParameter("c1");

String c2 = request.getParameter("c2");

String c3 = request.getParameter("c3");

request.setAttribute("sex", sex);

request.setAttribute("xin", xin);

request.setAttribute("c1", c1+"");

request.setAttribute("c2", c2+"");

request.setAttribute("c3", c3+"");

request.getRequestDispatcher("/2.jsp").forward(request, response);

}

}

public void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

doGet(request,response);

}

}

2.jsp

<body>

<form method="post">

<tr><%=request.getParameter("username") %></tr>

<tr><%=request.getParameter("sex") %></tr>

<tr><%=request.getParameter("xin") %></tr>

<tr><%=request.getParameter("c1") %></tr>

<tr><%=request.getParameter("c2") %></tr>

<tr><%=request.getParameter("c3") %></tr>

</form>

</body>

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