需求如下：
* 需求 * 完成用户注册效果。 具体要求： 1）用户输入信息：用户名，密码，确认密码，性别，出生日期，电子邮箱，地址 。 2）用户输入信息后，调用相关的XML操作类，把数据保存到XML文件中。 3）保存成功后，显示成功信息。
注册页面如下：
首页html代码如下：
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<!DOCTYPE html> <html> <head> <title>用户注册页面</title> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="this is my page"> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body> <form action="/day09/RegServlet" method="post"> <h1>用户登陆</h1> <h2>请填写注册信息</h2> 姓名：<input type="text" name="userName" ><br> 密码：<input type="password" name="userPassword" id="pwd"><br> 确认密码：<input type="password" name="again_userPassword" id="again_pwd" >(PS:如果两次密码匹配不正确，提交后重新注册)<br> 性别：<input type="radio" name="sex" value="男">男 <input type="radio" name="sex" value="女">女<br> 出身日期：<input type="text" name="age" ><br> 电子邮箱：<input type="text" name="email"><br> 地址：<select name="sheng"> <option value="广东">广东</option> <option value="广西">广西</option> <option value="云南">云南</option> <option value="其他">其他</option> </select><br> <input type="submit" value="提交"> </form> </body> </html>
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Servlet接收数据并处理：
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import java.io.FileOutputStream; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.swing.text.html.HTMLDocument.HTMLReader.FormAction; import org.dom4j.Document; import org.dom4j.DocumentException; import org.dom4j.Element; import org.dom4j.io.OutputFormat; import org.dom4j.io.SAXReader; import org.dom4j.io.SAXWriter; import org.dom4j.io.XMLWriter; public class RegServlet extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("utf-8"); String name = request.getParameter("userName"); String userName = new String(name.getBytes("ISO-8859-1"),"utf-8"); String password = request.getParameter("userPassword"); String againPassword = request.getParameter("again_userPassword"); String sex = request.getParameter("sex"); String age = request.getParameter("age"); String email = request.getParameter("email"); String sheng = request.getParameter("sheng"); if(!password.equals(againPassword)){ System.out.println("两次密码不匹配，请重新输入"); response.getWriter().append("两次密码不匹配，请重新输入"); response.sendRedirect("/day09/Register.html"); return; } SAXReader sr = new SAXReader(); try { Document doc = sr.read("D:/My Eclipse/day09/src/user.xml"); Element root = doc.getRootElement(); Element user = root.addElement("user"); user.addElement("name").setText(name); user.addElement("password").setText(password); user.addElement("sex").setText(sex); user.addElement("age").setText(age); user.addElement("sheng").setText(sheng); XMLWriter sw = new XMLWriter( new FileOutputStream("D:/My Eclipse/day09/src/user.xml"), OutputFormat.createPrettyPrint() ); sw.write(doc); sw.close(); RequestDispatcher dispatcher = request.getRequestDispatcher("/succ.html"); dispatcher.forward(request, response); } catch (Exception e) { e.printStackTrace(); } } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request,response); } }
xml文档如下：
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<?xml version="1.0" encoding="UTF-8"?> <Users> <user> <name>何胜</name> <password>2klj3</password> <sex>男</sex> <age>91年04月22日</age> <sheng>广东</sheng> </user> <user> <name>默默</name> <password>987456</password> <sex>男</sex> <age>94年11月11日</age> <sheng>云南</sheng> </user> </Users>
