Struts2 - 使用XML实现简单Validation（从零开始学习Strust2_05）
2012-03-13 12:13
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开发环境：
Eclipse IDE for Java EE Developers（下载地址）
struts-2.3.1.2（下载地址）
apache-tomcat-6.0.35（下载地址）
Validation除了可以再Action中通过Validation函数实现，还可以用过XML文件来实现。
使用XML实现Validation有两点要求
一个是XML文件的名字是RegisterAction-validation.xml形式，RegisterAction是对应的xxxAction.java的名字。
一个是将XML文件放置在对应Action的同一个包中。
web.xml没有变化
<?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>struts2_20120313_01</display-name>
<display-name>struts2_20120312_01</display-name>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
struts.xml和函数Validation情况一样
<?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>
<constant name="struts.devMode" value="true" />
<package name="default" extends="struts-default">
<action name="RegisterAction" class="com.zeph.struts2.action.RegisterAction">
<result name="success">/regSuccess.jsp</result>
<result name="input">/register.jsp</result>
</action>
<action name="registerInput" class="com.zeph.struts2.action.RegisterAction"
method="input">
<result name="input">/register.jsp</result>
</action>
</package>
</struts>
RegisterAction.java
package com.zeph.struts2.action;
import com.opensymphony.xwork2.ActionSupport;
import com.zeph.struts2.bean.UserRegInfo;
public class RegisterAction extends ActionSupport {
private static final long serialVersionUID = 7711471040010683683L;
private UserRegInfo userRegInfoBean;
public UserRegInfo getUserRegInfoBean() {
return userRegInfoBean;
}
public void setUserRegInfoBean(UserRegInfo userRegInfoBean) {
this.userRegInfoBean = userRegInfoBean;
}
@Override
public String execute() throws Exception {
return SUCCESS;
}
}
UserRegInfo.java
package com.zeph.struts2.bean;
public class UserRegInfo {
private String account;
private String password;
private String pwdValidate;
private String realName;
private String email;
private String msn;
private String qq;
public String getAccount() {
return account;
}
public void setAccount(String account) {
this.account = account;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getPwdValidate() {
return pwdValidate;
}
public void setPwdValidate(String pwdValidate) {
this.pwdValidate = pwdValidate;
}
public String getRealName() {
return realName;
}
public void setRealName(String realName) {
this.realName = realName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getMsn() {
return msn;
}
public void setMsn(String msn) {
this.msn = msn;
}
public String getQq() {
return qq;
}
public void setQq(String qq) {
this.qq = qq;
}
@Override
public String toString() {
return "Account:" + getAccount() + "Real Name:" + getRealName()
+ "E-Mail:" + getEmail() + "MSN:" + getMsn() + "QQ:" + getQq();
}
}
因为使用了Properties文件来实现key所以jsp如下：
index.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib uri="/struts-tags" prefix="s"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>A action link to Register page to make sure properties
can be used</title>
</head>
<body>
<s:url action="registerInput" var="registerInputLink" />
<p>
<a href="${registerInputLink}">Please register</a>
</p>
</body>
</html>
register.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib uri="/struts-tags" prefix="s"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Register</title>
</head>
<body>
<s:form action="RegisterAction">
<s:textfield key="userRegInfoBean.account"></s:textfield>
<s:password key="userRegInfoBean.password"></s:password>
<s:password key="userRegInfoBean.pwdValidate"></s:password>
<s:textfield key="userRegInfoBean.realName"></s:textfield>
<s:textfield key="userRegInfoBean.email"></s:textfield>
<s:textfield key="userRegInfoBean.msn"></s:textfield>
<s:textfield key="userRegInfoBean.qq"></s:textfield>
<s:submit></s:submit>
</s:form>
</body>
</html>
regSuccess.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@taglib uri="/struts-tags" prefix="s"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Register Success</title>
</head>
<body>
account:
<s:property value="userRegInfoBean.account" />
<br> real name:
<s:property value="userRegInfoBean.realName" />
<br> e-mail:
<s:property value="userRegInfoBean.email" />
<br> MSN:
<s:property value="userRegInfoBean.msn" />
<br> QQ:
<s:property value="userRegInfoBean.qq" />
</body>
</html>
RegisterAction.properties
#Created by JInto - www.guh-software.de
#Mon Mar 12 23:45:24 CST 2012
userRegInfoBean.account=Account
userRegInfoBean.email=E-Mail
userRegInfoBean.msn=MSN
userRegInfoBean.password=Password
userRegInfoBean.pwdValidate=Input Password Again
userRegInfoBean.qq=QQ
userRegInfoBean.realName=Real Name
最后是RegisterAction-validation.xml，这里只涉及到一些简单的Validation方法
<!DOCTYPE validators PUBLIC
"-//OpenSymphony Group//XWork Validator 1.0.2//EN"
"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">
<validators>
<validator type="requiredstring">
<param name="fieldname">userRegInfoBean.account</param>
<message>Account required.Not empty.</message>
</validator>
<validator type="requiredstring">
<param name="fieldname">userRegInfoBean.realName</param>
<message>Real Name required.Not empty.</message>
</validator>
<validator type="email">
<param name="fieldname">userRegInfoBean.email</param>
<message>Email address not valid.</message>
</validator>
<validator type="fieldexpression">
<param name="fieldname">userRegInfoBean.pwdValidate</param>
<param name="expression"><![CDATA[userRegInfoBean.pwdValidate == userRegInfoBean.password]]></param>
<message>Password input is inconsistent</message>
</validator>
</validators>
Eclipse IDE for Java EE Developers（下载地址）
struts-2.3.1.2（下载地址）
apache-tomcat-6.0.35（下载地址）
Validation除了可以再Action中通过Validation函数实现，还可以用过XML文件来实现。
使用XML实现Validation有两点要求
一个是XML文件的名字是RegisterAction-validation.xml形式，RegisterAction是对应的xxxAction.java的名字。
一个是将XML文件放置在对应Action的同一个包中。
web.xml没有变化
<?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>struts2_20120313_01</display-name>
<display-name>struts2_20120312_01</display-name>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
struts.xml和函数Validation情况一样
<?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>
<constant name="struts.devMode" value="true" />
<package name="default" extends="struts-default">
<action name="RegisterAction" class="com.zeph.struts2.action.RegisterAction">
<result name="success">/regSuccess.jsp</result>
<result name="input">/register.jsp</result>
</action>
<action name="registerInput" class="com.zeph.struts2.action.RegisterAction"
method="input">
<result name="input">/register.jsp</result>
</action>
</package>
</struts>
RegisterAction.java
package com.zeph.struts2.action;
import com.opensymphony.xwork2.ActionSupport;
import com.zeph.struts2.bean.UserRegInfo;
public class RegisterAction extends ActionSupport {
private static final long serialVersionUID = 7711471040010683683L;
private UserRegInfo userRegInfoBean;
public UserRegInfo getUserRegInfoBean() {
return userRegInfoBean;
}
public void setUserRegInfoBean(UserRegInfo userRegInfoBean) {
this.userRegInfoBean = userRegInfoBean;
}
@Override
public String execute() throws Exception {
return SUCCESS;
}
}
UserRegInfo.java
package com.zeph.struts2.bean;
public class UserRegInfo {
private String account;
private String password;
private String pwdValidate;
private String realName;
private String email;
private String msn;
private String qq;
public String getAccount() {
return account;
}
public void setAccount(String account) {
this.account = account;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getPwdValidate() {
return pwdValidate;
}
public void setPwdValidate(String pwdValidate) {
this.pwdValidate = pwdValidate;
}
public String getRealName() {
return realName;
}
public void setRealName(String realName) {
this.realName = realName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getMsn() {
return msn;
}
public void setMsn(String msn) {
this.msn = msn;
}
public String getQq() {
return qq;
}
public void setQq(String qq) {
this.qq = qq;
}
@Override
public String toString() {
return "Account:" + getAccount() + "Real Name:" + getRealName()
+ "E-Mail:" + getEmail() + "MSN:" + getMsn() + "QQ:" + getQq();
}
}
因为使用了Properties文件来实现key所以jsp如下：
index.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib uri="/struts-tags" prefix="s"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>A action link to Register page to make sure properties
can be used</title>
</head>
<body>
<s:url action="registerInput" var="registerInputLink" />
<p>
<a href="${registerInputLink}">Please register</a>
</p>
</body>
</html>
register.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib uri="/struts-tags" prefix="s"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Register</title>
</head>
<body>
<s:form action="RegisterAction">
<s:textfield key="userRegInfoBean.account"></s:textfield>
<s:password key="userRegInfoBean.password"></s:password>
<s:password key="userRegInfoBean.pwdValidate"></s:password>
<s:textfield key="userRegInfoBean.realName"></s:textfield>
<s:textfield key="userRegInfoBean.email"></s:textfield>
<s:textfield key="userRegInfoBean.msn"></s:textfield>
<s:textfield key="userRegInfoBean.qq"></s:textfield>
<s:submit></s:submit>
</s:form>
</body>
</html>
regSuccess.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@taglib uri="/struts-tags" prefix="s"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Register Success</title>
</head>
<body>
account:
<s:property value="userRegInfoBean.account" />
<br> real name:
<s:property value="userRegInfoBean.realName" />
<br> e-mail:
<s:property value="userRegInfoBean.email" />
<br> MSN:
<s:property value="userRegInfoBean.msn" />
<br> QQ:
<s:property value="userRegInfoBean.qq" />
</body>
</html>
RegisterAction.properties
#Created by JInto - www.guh-software.de
#Mon Mar 12 23:45:24 CST 2012
userRegInfoBean.account=Account
userRegInfoBean.email=E-Mail
userRegInfoBean.msn=MSN
userRegInfoBean.password=Password
userRegInfoBean.pwdValidate=Input Password Again
userRegInfoBean.qq=QQ
userRegInfoBean.realName=Real Name
最后是RegisterAction-validation.xml，这里只涉及到一些简单的Validation方法
<!DOCTYPE validators PUBLIC
"-//OpenSymphony Group//XWork Validator 1.0.2//EN"
"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">
<validators>
<validator type="requiredstring">
<param name="fieldname">userRegInfoBean.account</param>
<message>Account required.Not empty.</message>
</validator>
<validator type="requiredstring">
<param name="fieldname">userRegInfoBean.realName</param>
<message>Real Name required.Not empty.</message>
</validator>
<validator type="email">
<param name="fieldname">userRegInfoBean.email</param>
<message>Email address not valid.</message>
</validator>
<validator type="fieldexpression">
<param name="fieldname">userRegInfoBean.pwdValidate</param>
<param name="expression"><![CDATA[userRegInfoBean.pwdValidate == userRegInfoBean.password]]></param>
<message>Password input is inconsistent</message>
</validator>
</validators>
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