java代码如下：
package com.struts1.form;
import org.apache.struts.validator.ValidatorForm;
public class LoginValidatorForm extends ValidatorForm {
private static final long serialVersionUID = 1L;
private String email = null;
private String password = null;
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
package com.struts1.action;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import com.struts1.form.LoginValidatorForm;
public class LoginValidatorAction extends Action {
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
LoginValidatorForm loginValidatorForm = (LoginValidatorForm) form;
if (!"admin@163.com".equals(loginValidatorForm.getEmail()) || !"admin123".equals(loginValidatorForm.getPassword())) {
return mapping.findForward("fail");
}
return mapping.findForward("success");
}
}
web.xml：
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>struts1</display-name>
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
<!-- Standard Action Servlet Mapping -->
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>validateLogin.jsp</welcome-file>
</welcome-file-list>
</web-app>
struts-config.xml：
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE struts-config PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"
"http://struts.apache.org/dtds/struts-config_1_3.dtd">
<struts-config>
<form-beans>
<form-bean name="loginValidatorForm" type="com.struts1.form.LoginValidatorForm">
<form-property name="email" type="java.lang.String" />
<form-property name="password" type="java.lang.String" />
</form-bean>
</form-beans>
<global-exceptions>
</global-exceptions>
<global-forwards>
</global-forwards>
<action-mappings>
<action path="/validateLogin" type="com.struts1.action.LoginValidatorAction"
name="loginValidatorForm" scope="request" validate="true"
input="/validateLogin.jsp">
<forward name="fail" path="/fail.jsp" />
<forward name="success" path="/success.jsp" />
</action>
</action-mappings>
<message-resources parameter="MessageResources" />
<plug-in className="org.apache.struts.validator.ValidatorPlugIn">
<set-property property="pathnames"
value="/org/apache/struts/validator/validator-rules.xml,
/WEB-INF/validation.xml" />
</plug-in>
</struts-config>
validation.xml：
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE form-validation PUBLIC
"-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.3.0//EN"
"http://jakarta.apache.org/commons/dtds/validator_1_3_0.dtd">
<form-validation>
<formset>
<form name="loginValidatorForm">
<field property="email" depends="required,email">
<arg key="loginValidatorForm.email" />
</field>
<field property="password" depends="required,mask">
<arg key="loginValidatorForm.password" />
<var>
<var-name>mask</var-name>
<var-value>^[0-9a-zA-Z]*$</var-value>
</var>
</field>
</form>
</formset>
</form-validation>
MessageResources.properties：
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# -- Standard Errors --
errors.header=<ul>
errors.prefix=<li class="error">
errors.suffix=</li>
errors.footer=</ul>
# -- Struts Validator Error Messages --
errors.required={0} is required.
errors.minlength={0} can not be less than {1} characters.
errors.maxlength={0} can not be greater than {1} characters.
errors.invalid={0} is invalid.
errors.byte={0} must be a byte.
errors.short={0} must be a short.
errors.integer={0} must be an integer.
errors.long={0} must be a long.
errors.float={0} must be a float.
errors.double={0} must be a double.
errors.date={0} is not a date.
errors.range={0} is not in the range {1} through {2}.
errors.creditcard={0} is an invalid credit card number.
errors.email={0} is an invalid e-mail address.
# -- other --
errors.cancel=Operation cancelled.
errors.detail={0}
errors.general=The process did not complete. Details should follow.
errors.token=Request could not be completed. Operation is not in sequence.
errors.twofields=The '{0}' field must have the same value as the '{1}' field.
errors.name.required=Name is required.
errors.secret.required=Please tell me a secret (it doesn't have to be true).
# -- formatting --
format.date=M/d/yyyy h:mm a z
format.currency=$#,##0.00;$(#,##0.00)
# -- buttons --
button.submit=Submit
button.cancel=Cancel
button.confirm=Confirm
button.reset=Reset
button.save=Save
# -- messages --
message.detail={0}
message.example.simple=This is a simple message.
message.example.replaceable=This is <strong>{0}</strong> message with <strong>{1}</strong> parameters.
message.welcome=Welcome to the examples page.
# -- prompts --
prompt.name=Name
prompt.secret=Secret phrase
prompt.byte=Byte
prompt.creditCard=Credit Card
prompt.date=Date
prompt.double=Double
prompt.email=Email
prompt.float=Float
prompt.integer=Integer
prompt.long=Long
prompt.mask=Mask
prompt.min=Min. Length
prompt.max=Max. Length
prompt.range=Range
prompt.required=Required
prompt.short=Short
prompt.password=Password
prompt.password2=Password confirmation
loginValidatorForm.email=email
loginValidatorForm.password=password
validateLogin.jsp：
<%@ page language="java" contentType="text/html; charset=GB18030"
pageEncoding="GB18030"%>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>
<%@ taglib uri="http://struts.apache.org/tags-nested" prefix="nested" %>
<!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=GB18030">
<title>Insert title here</title>
</head>
<body>
<html:form action="validateLogin" method="post" οnsubmit="return validateLoginValidatorForm(this);">
email:<html:text property="email" />
password:<html:password property="password" />
<html:submit value="login" />
</html:form>
<html:javascript formName="loginValidatorForm"/>
</body>
</html>
测试：
一、Struts的插件机制：
Struts通过插件机制来给用户扩展Struts功能。
1.提供一个PlugIn接口，init(),destroy()。自定义的插件类就去实现就个类。
2.在Struts的配置文件中，用<plug-in className="...">标记来注册到Struts框架中。
二、Struts中验证框架的使用：
1.安装：
1) 在struts配置文件中添加<plug-in>标记来加载验证框架插件：
<plug-in className="org.apache.struts.validator.ValidatorPlugIn">
<set-property property="pathnames"
value="/WEB-INF/validator-rules.xml,/WEB-INF/validation.xml"/>
</plug-in>
2) 把validator-rules.xml和validation.xml放置在项目的WEB-INF目录下。
3) 在struts配置文件中添加一个<message-resources parameter="MessageResources" />,然后在项目源代码路径中添加MessageREsources_xx_xx.properties，在资源文件中把validator-rules.xml中的一些验证框架要使用到消息拷贝进去。
2.使用：
1) 验证框架要求ActionForm必须继承自ValidatorForm或它的子类ValidatorActionForm,不能重写validate()方法，而且在struts配置文件要配置成需要验证(把对应<action>标记的validate设置为true)。
2) 修改validation.xml来配置针对某个ActionForm的验证规则。
3) 在验证失败后跳转到的页面中用<html:messages>来显示错误消息。
3.用Validator框架做客户端javaScript的验证：
1) 在jsp页面中包含<html:javascript>标签，用formName属性指定要验证的表单名。
表单名要跟validation.xml中配置的name一致。
如：<html:javascript formName="userForm"/>
2） 对需要验证的表单定义onsubmit事件，其中事件名称为validate+"要验证的表单名"
如：
<form name="userForm" action="login.do"
οnsubmit="return validateUserForm(this)">
三、ValidateForm和ValidateActionForm的区别
如果表单Bean继承自ValidateForm：那么在validation.xml文件中<form>标记配置的name属性值应该对应成struts配置文件中<action>标记的name属性值。
如果表单Bean继承自ValidateActionForm：那么在validation.xml文件中<form>标记配置的name属性值应该对应成struts配置文件中<action>标记的path属性值。这种方式就可针对同一个表单在不同请求路径下的不同验证。
扩展四、如果使用了DispatchAction时，Validate验证框架无法完成工作了。解决方法就是重写org.apache.struts.validator.FieldChecks中所有的方法，添加对parameter="xxx"的区别。
