Struts2（5）：Struts2的输入校验
1，Register.jsp，一个注册页面，包括用户名，密码，确认密码，年龄，生日，毕业时间这六个信息。
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%><%@ taglib prefix="s" uri="/struts-tags"%><html> <body> <table align="center" width="40%"> <tr> <td style="color:red"><s:fielderror></s:fielderror></td> </tr> </table> <s:form action="register" theme="simple"> <table align="center" width="40%"> <tr> <td>username:</td> <td><s:textfield name="username"></s:textfield></td> </tr> <tr> <td>password:</td> <td><s:password name="password"></s:password></td> </tr> <tr> <td>re-password:</td> <td><s:password name="repassword"></s:password></td> </tr> <tr> <td>age:</td> <td><s:textfield name="age"></s:textfield></td> </tr> <tr> <td>birthday:</td> <td><s:textfield name="birthday"></s:textfield></td> </tr> <tr> <td>graduation:</td> <td><s:textfield name="graduation"></s:textfield></td> </tr> <tr> <td><s:submit></s:submit></td> <td><s:reset></s:reset></td> </tr> </table> </s:form> </body></html>
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2，RegisterAction.java，在validate方法中进行输入校验
package com.test.action;import java.sql.Date;import java.util.Calendar;import com.opensymphony.xwork2.ActionSupport;public class RegisterAction extends ActionSupport {private String username;private String password;private String repassword;private int age;private Date birthday;private Date graduation;public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public String getRepassword() {return repassword;}public void setRepassword(String repassword) {this.repassword = repassword;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public Date getBirthday() {return birthday;}public void setBirthday(Date birthday) {this.birthday = birthday;}public Date getGraduation() {return graduation;}public void setGraduation(Date graduation) {this.graduation = graduation;}public void validate() {//年龄不能小于0if(age < 0){ this.addFieldError("age", "your age is error");}//用户名不能为空if(null == username || username.equals("")){ this.addFieldError("username", "please input your username");}//密码不能为空，且两次输入的密码必须相同if(null == password || null == repassword || !password.equals(repassword)){this.addFieldError("password", "your password is invalid");}//生日与毕业时间不能为空，且毕业时间不能早于生日if(null != birthday && null != graduation){Calendar c1 =Calendar.getInstance();c1.setTime(birthday);Calendar c2 =Calendar.getInstance();c2.setTime(graduation);if(c1.after(c2)){this.addFieldError("birthday", "birthday should be before graduation");}}}}?3，struts.xml配置
<action name="register" name="code"><%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%><%@ taglib prefix="s" uri="/struts-tags" %><html> <body> <table align="center" width="40%"> <tr> <td>username:</td> <td>${requestScope.username}</td> </tr> <tr> <td>password:</td> <td>${requestScope.password}</td> </tr> <tr> <td>age:</td> <td>${requestScope.age}</td> </tr> <tr> <td>birthday:</td> <td>${requestScope.birthday} </td> </tr> <tr> <td>graduation:</td> <td>${requestScope.graduation} </td> </tr> <tr> <td><input type="submit" name="submit"> </td> <td><input type="reset" name="reset"> </td> </tr> </table> </body></html>?