基于XML配置方式实现输入校验

在JSP页面中导入<%@ taglib uri="/struts-tags" prefix="s" %>标签

在页面中显示信息用 验证的信息:<s:fielderror/>

在action中创建一个继承ActionSupport的UserInfoAction.java类

然后再action包下创建一个UserInfoAction-validation.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC "-//OpenSymphony Group//XWork Validator 1.0.3//EN" "http://www.opensymphony.com/xwork/xwork-validator-1.0.3.dtd">
<validators>
<field name="txtName">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message>用户名不能为空!</message>
</field-validator>
</field>
<field name="email">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message>邮箱不能为空！</message>
</field-validator>
<field-validator type="email">
<message>邮箱格式不争取</message>
</field-validator>
</field>
<field name="telePhone">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message>电话不能为空</message>
</field-validator>
<field-validator type="regex">
<param name="expression"><![CDATA[^1[358][0-9]{9}$]]></param>
<message>无效的电话</message>
</field-validator>
</field>
</validators>

在STRUTS.XML中配置

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="base" namespace="" extends="struts-default">
<action name="user_*" method="{1}" class="action.UserInfoAction">
<result name="ok">/index.jsp</result>
<result name="input">/index.jsp</result>
</action>
</package>
</struts>