JSP简单练习-用Servlet获取表单数据
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// javaBean代码 package servlet; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; public class AcceptUserRegist extends HttpServlet { public String codeToString(String str) // 处理中文字符串的函数 { String s=str; try { byte tempB[]=s.getBytes("ISO-8859-1"); s=new String(tempB); return s; }catch(Exception e) { return s; } } public void init(ServletConfig config) throws ServletException { super.init(config); } public void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException{ // 设置mime response.setContentType("text/html;charset=GB2312"); PrintWriter out=response.getWriter(); out.println("<html><head><title>接收新用户注冊</title></head> <body>"); out.println("这是新用户注冊所提交的数据:<br>"); out.println("用户名是:"+codeToString(request.getParameter("username"))+"<br>"); out.println("密码是:"+codeToString(request.getParameter("userpassword"))+"<br>"); out.println("性别是:"+codeToString(request.getParameter("sex"))+"<br>"); out.println("出生年月是:"+request.getParameter("year")+request.getParameter("month")+request.getParameter("day")+"<br>"); out.println("电子邮箱是:"+request.getParameter("E-mail")+"<br>"); out.println("家庭住址是:"+codeToString(request.getParameter("address"))+"<br>"); out.print("</body> </html>"); } }
<!-- servletform.jsp --> <%@ page contentType="text/html;charset=gb2312" %> <script language="javascript"> function on_submit() // 验证数据的合法性 { if(form1.username.value=="") { alert("用户名不能为空,请输入用户名!"); form1.username.focus(); return false; } if(form1.userpassword.value=="") { alert("用户密码不能为空。请输入密码!"); form1.userpassword.focus(); return false; } if(form1.reuserpassword.value=="") { alert("用户确认密码不能为空。请输入密码!"); form1.reuserpassword.focus(); return false; } if(form1.userpassword.value!=form1.reuserpassword.value) { alert("密码与确认密码不同"); form1.userpassword.focus(); return false; } if(form1.email.value.length!=0) { for(i=0;i<form1.email.value.length;i++) { if(form1.email.value.charAt(i)==‘@‘) { break; } } if(i==form1.email.value.length) { alert("非法E-mail地址!"); form1.email.focus(); return false; } } else { alert("请输入E-mail!"); form1.email.focus(); return false; } } </script> <html> <head> <title>新用户注冊</title> </head> <body> <form method="POST" action="acceptUserRegist" name="form1" onsubmit="return on_submit()"> 新用户注冊<br> 用户名(*):<input type="text" name="username" size="20"><br> 密 码(*):<input type="password" name="userpassword" size="20"><br> 再输一次密码(*):<input type="password" name="reuserpassword" size="20"><br> 性别:<input type="radio" value="男" checked name="sex">男<input type="radio" name="sex" value="女">女<br> 出生年月:<input name="year" size="4" maxlength=4>年 <select name="month"> <option value="1" selected>1</option> <option value="2">2</option> <option value="3">3</option> <option value="4">4</option> <option value="5">5</option> <option value="6">6</option> <option value="7">7</option> <option value="8">8</option> <option value="9">9</option> <option value="10">10</option> <option value="11">11</option> <option value="12">12</option> </select>月 <input name="day" size="3" maxlength=4>日<br> 电子邮箱(*):<input name="E-mail" maxlength=28><br> 家庭住址:<input type="text" name="address" size="20"><br> <input type="submit" value="提交" name="B1"><input type="reset" value="所有重写" name="B2"><br> </form> </body> </html>另外。在web.xml文件的<web-app>与</web-app>中增加例如以下配置:
<servlet> <servlet-name>acceptUserRegist</servlet-name> <servlet-class>servlet.AcceptUserRegist</servlet-class> </servlet> <servlet-mapping> <servlet-name>acceptUserRegist</servlet-name> <url-pattern>/acceptUserRegist</url-pattern> </servlet-mapping>输入网址:localhost:8080/jspdemo/servletform.jsp
填写信息~ 例如以下:
提交后。显示页面例如以下:
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