struts2 校验框架

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struts2

框架 Struts XML JSP Apache

通过继承ActionSupport重写validate()方法,实现数据校验,会存在大量的重复代码,
类似于struts1,Struts2也提供通过配置文件来进行数据校验,使用校验框架不必重复的编写校验代码.

Action及jsp可以不用改变

package com;



import java.util.Date;



import com.opensymphony.xwork2.ActionSupport;



public class RegistAction extends ActionSupport {



	private String userName;

	

	private String password;

	

	private Integer age;

	

	private Date birthday;



	public Integer getAge() {

		return age;

	}



	public void setAge(Integer age) {

		this.age = age;

	}



	public Date getBirthday() {

		return birthday;

	}



	public void setBirthday(Date birthday) {

		this.birthday = birthday;

	}



	public String getPassword() {

		return password;

	}



	public void setPassword(String password) {

		this.password = password;

	}



	public String getUserName() {

		return userName;

	}



	public void setUserName(String userName) {

		this.userName = userName;

	}



	@Override

	public String execute() throws Exception {

		return SUCCESS;

	}

}

Struts.xml

<?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.custom.i18n.resources" value="messageResource"></constant>

    

    <package name="user" extends="struts-default">

    	<action name="regist" class="com.RegistAction">

    		<result name="success">/welcome.jsp</result>

    		<result name="input">/regist.jsp</result>

    	</action>

    </package>

</struts>

jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<%@taglib prefix="s" uri ="/struts-tags"%> 

<html>

  <body>

  	<form action="regist.action" method="post">

  		<s:fielderror></s:fielderror>

  		<table>

  			<tr>

  				<td>userName:</td>

  				<td>

  					<input type="text" name="userName">

  				</td>

  			</tr>

  			<tr>

  				<td>password:</td>

  				<td>

  					<input type="text" name="password">

  				</td>

  			</tr>

  			

  			<tr>

  				<td>age:</td>

  				<td>

  					<input type="text" name="age">

  				</td>

  			</tr>

  			<tr>

  				<td>birthday:</td>

  				<td>

  					<input type="text" name="birthday">

  				</td>

  			</tr>

  			<tr>

  				<td colspan="2">

  					<s:submit value="注册"></s:submit>

  				</td>

  			</tr>

   	</form>

  </body>

</html>

添加验证文件
在RegistAction.java同目录下添加文件名为RegistAction-validation.xml(action名-validation.xml)

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE validators PUBLIC 

          "-//OpenSymphony Group//XWork Validator 1.0//EN" 

          "http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">

<validators>

	<field name="userName">

		<!-- 验证字符串不能为空 -->

		<field-validator type="requiredstring">

			<!-- 去空格 -->

			<param name="trim">true</param>

			<!-- 错误提示信息 -->

			<message>userName is required</message>

		</field-validator>

		

		<!-- 验证字符串长度 -->

		<field-validator type="stringlength">

			<param name="minLength">5</param>

			<param name="maxLength">16</param>

			<message>userName should be between ${minLength} and ${maxLength}</message>

		</field-validator>

	</field>

	

	<field name="password">

		<field-validator type="requiredstring">

			<param name="trim">true</param>

			<message>password is required</message>

		</field-validator>

		

		<field-validator type="stringlength">

			<param name="minLength">5</param>

			<param name="maxLength">16</param>

			<message>password should be between ${minLength} and ${maxLength}</message>

		</field-validator>

	</field>

	

	<!-- 验证字符串为数字 -->

	<field name="age">

		<field-validator type="int">

			<param name="min">1</param>

			<param name="max">150</param>

			<message>age should be between ${min} and ${max}</message>

		</field-validator>

	</field>

	

	<!-- 验证字符串为日期类型 -->

	<field name="birthday">

		<field-validator type="date">

			<param name="min">1888-01-01</param>

			<param name="max">2008-01-01</param>

			<message>birthday should be between ${min} and ${max}</message>

		</field-validator>

	</field>

</validators>

Struts 2.0已经实现很多常用的校验了,在jar的default.xml中的注册的

<validators> 

    <validator name ="required" class ="com.opensymphony.xwork2.validator.validators.RequiredFieldValidator" /> 

    <validator name ="requiredstring" class ="com.opensymphony.xwork2.validator.validators.RequiredStringValidator" /> 

    <validator name ="int" class ="com.opensymphony.xwork2.validator.validators.IntRangeFieldValidator" /> 

    <validator name ="double" class ="com.opensymphony.xwork2.validator.validators.DoubleRangeFieldValidator" /> 

    <validator name ="date" class ="com.opensymphony.xwork2.validator.validators.DateRangeFieldValidator" /> 

    <validator name ="expression" class ="com.opensymphony.xwork2.validator.validators.ExpressionValidator" /> 

    <validator name ="fieldexpression" class ="com.opensymphony.xwork2.validator.validators.FieldExpressionValidator" /> 

    <validator name ="email" class ="com.opensymphony.xwork2.validator.validators.EmailValidator" /> 

    <validator name ="url" class ="com.opensymphony.xwork2.validator.validators.URLValidator" /> 

    <validator name ="visitor" class ="com.opensymphony.xwork2.validator.validators.VisitorFieldValidator" /> 

    <validator name ="conversion" class ="com.opensymphony.xwork2.validator.validators.ConversionErrorFieldValidator" /> 

    <validator name ="stringlength" class ="com.opensymphony.xwork2.validator.validators.StringLengthFieldValidator" /> 

    <validator name ="regex" class ="com.opensymphony.xwork2.validator.validators.RegexFieldValidator" /> 

</validators>

<message>提示信息也可以国际化,<message key=””>就可以显示资源文件里的key对应的value了

当一个Action中有多个业务方法时,每个业务方法都会使用这种验证,显然是不好的.例如Action中有方法public String regist(),我们可以为regist()专门定义一个配置文件,文件名称为RegistAction-regist-validation.xml(Action名称-方法名- validation.xml)

struts2-validate2.rar (3.3 MB)
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struts2 的国际化支持 | struts2 数据校验

2008-04-22 18:06
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2 楼 NO.6 2013-08-06

刚试了，1楼说的对！

1 楼 bcw104 2008-12-08

“当一个Action中有多个业务方法时,每个业务方法都会使用这种验证,显然是不好的.例如Action中有方法public String regist(),我们可以为regist()专门定义一个配置文件,文件名称为RegistAction-regist-validation.xml(Action名称-方法名- validation.xml)”

有个错误，好像应该为RegistAction-regist-validation.xml(Action名称-actionname名- validation.xml)
比如：

<action name="register" class="com.test.action.RegisterAction" method="abc">
			<result name="success">/success.jsp</result>
			<result name="input">/register2.jsp</result>
		</action>

那么校验文件名应该为：RegisterAction-register-validation.xml,而不是RegisterAction-abc-validation.xml,可以试一下，我用的struts2-2.0.11

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