struts.xml
<?xml version="1.0" encoding="GBK"?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <constant name="struts.custom.i18n.resources" value="mess"></constant> <constant name="struts.i18n.encoding" value="GBK"></constant> <package name="lee" extends="struts-default"> <action name="login" class="com.lee.action.LoginAction"> <result name="input" type="">/login.jsp</result> <result name="success">/welcome.jsp</result> <result name="error">/error.jsp</result> </action> <action name="regist" class="com.lee.action.RegistAction"> <result name="input">/regist.jsp</result> </action> </package> </struts>
action类
package com.lee.action; import java.util.Date; import com.opensymphony.xwork2.ActionSupport; public class RegistAction extends ActionSupport { private static final long serialVersionUID = 1L; private String userName; private String password; private Integer age; private Date birthday; public String execute() throws Exception{ //TODO return null; } /** * @return the userName */ public String getUserName() { return userName; } /** * @param userName the userName to set */ public void setUserName(String userName) { this.userName = userName; } /** * @return the password */ public String getPassword() { return password; } /** * @param password the password to set */ public void setPassword(String password) { this.password = password; } /** * @return the age */ public Integer getAge() { return age; } /** * @param age the age to set */ public void setAge(Integer age) { this.age = age; } /** * @return the birthday */ public Date getBirthday() { return birthday; } /** * @param birthday the birthday to set */ public void setBirthday(Date birthday) { this.birthday = birthday; } }
RegistAction-validation.xml
<?xml version="1.0" encoding="GBK"?>
<!DOCTYPE validators PUBLIC "-//OpenSymphony Group//XWork Vlidators 1.0.3//EN" "http://struts.apache.org/dtds/xwork-validator-1.0.3.dtd">
<validators>
<field name="username">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message>必须输入用户名。</message>
</field-validator>
<field-validator type="regex">
<param name="expression"><![CDATA[(^[A-Za-z0-9]{4,25}$)]]></param>
<message>用户名必须是字母或者数字，长度在4到25位之间。</message>
</field-validator>
</field>
<field name="password">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message>必须输入密码。</message>
</field-validator>
<field-validator type="regex">
<param name="expression"><![CDATA[^[A-Za-z0-9]{4,25}$]]></param>
<message>密码必须是字母或者数字，长度在4到25位之间。</message>
</field-validator>
</field>
<field name="age">
<field-validator type="int">
<param name="min">1</param>
<param name="max">150</param>
<message>年龄必须在1到150之间。</message>
</field-validator>
</field>
<field name="birthday">
<field-validator type="date">
<param name="min">1900-01-01</param>
<param name="max">2100-12-31</param>
<message>生日必须在${min}到${max}之间。</message>
</field-validator>
</field>
</validators>
regist.jsp
<%@ page language="java" contentType="text/html; charset=GBK"
pageEncoding="GBK"%>
<%@ taglib uri="/struts-tags" prefix="s" %>
<!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=GBK">
<title><s:text name="registpage"></s:text></title>
</head>
<body>
<s:form action="regist">
<s:fielderror cssStyle="color:red"/>
<s:textfield name="username" label="用户名"></s:textfield>
<s:password name="password" label="密码"></s:password>
<s:textfield name="age" label="年龄"></s:textfield>
<s:textfield name="birthday" label="生日"></s:textfield>
<s:submit value="注册"></s:submit>
</s:form>
</body>
</html>
使用XWork提供的Annotation的输入校验
@RequiredStringValidator(key="name.required",message="用户名不能为空。") public void setUserName(String userName) { this.userName = userName; }
如果Struts的校验器无法满足需求，可以通过重写ActionSupport类的validate方法手动完成校验。
@Override public void validate(){ if(!getUserName().contains("lee")){ addFieldError("username","********************"); } }