Validation.FO 使用指南
框架说明
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这是一个验证框架,并且是一个 独立的验证框架 ,不依赖与其他已有的框架;
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可以*的嵌入到其他框架,比如Spring、Struts等流行框架,但实质来说他是独立的,所以无所谓嵌入到哪里,如果需要在GUI桌面应用中,也是完美的;
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配置简单,可*扩展验证器,实际只要实现IValidator接口,以及在rules.fo.xml中添加相关的配置即可;
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支持Spring接口
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使用过程中,你会感觉好像只用了
IValidateService.validate()
一个方法,这会让人感觉良好
优点
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不与任何对象做绑定,最大限度解耦
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只要规则配置写的合理,规则可以复用到多个对象
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扩展验证器很简单
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以Map存储验证结果,非常简单的导出JSON,只要你愿意
相关文档
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DEMO案例源代码,Validation.FO Demo
如何下载
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Maven依赖 或 直接下载Validation.FO包
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< dependency >
< groupId >cc.fozone.validation</ groupId >
< artifactId >fo-validation</ artifactId >
< version >0.9.1.RELEASE</ version >
</ dependency >
|
-
(必须) 下载配置文件 Validation.FO-CONFIGURATION
快速开始
使用Validation.FO的步骤如下:
-
配置验证规则
rules.fo.xml
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实例化
IValidateService
对象 -
调用
IValidateService.validate
方法
基本的使用方法
源代码地址:Basic Usage
1. 创建POJO对象 User.java
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package validationfo.basic;
import java.sql.Timestamp;
/** * 用户对象
* @author Jimmy Song
*
*/
public class User {
// 用户名
private String username;
// 密码
private String password;
// 再次输入密码
private String passwordOne;
// 邮箱
private String email;
// 开始与结束时间
private Timestamp starttime;
private Timestamp endtime;
/**
* Setter & Getter
*/
...
} |
2. 配置验证规则 rules.fo.xml
-
<include file=""/>
导入其他规则文件 -
<group name=""></group>
验证分组,name应该为全局唯一的 -
<field name=""></field>
验证的字段,name是被验证对象的属性字段名 -
<rule name="" message=""></rule>
验证规则,name是验证器名称,message是错误后返回的消息 -
<param name="" value=""></param>
是验证规则时可能需要传入的参数,name是参数名,value是参数值
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<? xml version = "1.0" encoding = "UTF-8" ?>
< fozone-validation >
<!-- include 标签导入其他配置 -->
< include file = "validationinfo/basic/another-rules.fo.xml" />
<!-- 验证组ID,全局唯一 -->
< group name = "user.validate" >
<!-- 验证字段 -->
< field name = "email" >
<!--
规则列表
-->
< rule name = "required" message = "邮件必须填写" />
< rule name = "between" message = "邮件长度应该3-100之间" >
< param name = "min" value = "3" />
< param name = "max" value = "100" />
</ rule >
< rule name = "match" message = "邮件格式不正确" >
< param name = "regex" value = "^[A-Za-z]+[\.\-_A-Za-z0-9]*@[A-Za-z0-9]+[\.\-_A-Za-z0-9]*$" />
</ rule >
</ field >
...
</ group >
</ fozone-validation >
|
3. 实例化测试 BasicTest.java
主要步骤:
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创建配置读取对象
IValidateConfig
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创建验证服务对象
IValidateService
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执行验证方法
IValidateService.validate(object, groupId)
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package validationfo.basic;
... /** * 最基本的测试
* @author Jimmy Song
*
*/
public class BasicTest {
public static void main(String[] args) {
/**
* Validation.FO的配置资源
*/
// 验证器配置,系统默认配置
String validatorsXML = "validationfo/basic/validators.fo.xml" ;
// 规则配置
String rulesXML = "validationfo/basic/rules.fo.xml" ;
/**
* 实例化配置对象
*/
IValidateConfig config = new BasicValidateConfig(validatorsXML, rulesXML);
/**
* 实例化验证服务层
*/
IValidateService validateService = new BasicValidateService(config);
// 实例化用户
User user = createUser();
/**
* 执行验证
*/
Map<String,String> map = validateService.validate(user, "user.validate" );
// 输出结果
if (map == null || map.size() == 0 ) {
System.out.println( "验证成功" );
} else {
System.out.println( "验证失败,结果如下" );
System.out.println(map);
}
}
} |
4. 结果输出
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12 : 31 : 41 , 084 INFO BasicValidateConfig: 44 - read validation main file , validationfo/basic/rules.fo.xml
验证失败,结果如下 {email=邮件格式不正确, password=两次密码输入不正确, starttime=开始时间不能大于结束时间, endtime=结束时间不能小于开始时间} |
如何在Spring中使用
-
在Spring中需要使用
SpringValidateConfg
配置对象 -
需要额外配置
SpringValidator
Bean对象
1. 配置Spring配置 context.xml
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<? xml version = "1.0" encoding = "UTF-8" ?>
< beans xmlns = "http://www.springframework.org/schema/beans"
xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance" >
<!-- 基于 Spring 配置读取 -->
< bean id = "springValidateConfig" class = "cc.fozone.validation.config.SpringValidateConfig" >
< property name = "validators" >
< value >validationfo/spring/validators.fo.xml</ value >
</ property >
< property name = "rules" >
< value >validationfo/spring/rules.fo.xml</ value >
</ property >
</ bean >
<!-- 配置验证服务 -->
< bean id = "basicValidateService" class = "cc.fozone.validation.BasicValidateService" >
< constructor-arg index = "0" ref = "springValidateConfig" />
</ bean >
<!-- 配置基于Spring的验证器 -->
< bean class = "cc.fozone.validation.validators.SpringValidator" />
</ beans >
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2. 如何通过Spring进行验证,SpringTest.java
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public class SpringTest {
public static void main(String[] args) {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
"validationfo/spring/context.xml" );
// 获取验证服务
IValidateService service = context.getBean(IValidateService. class );
// 创建用户对象
User user = createUser();
// 执行验证
Map<String, String> map = service.validate(user, "user.validate" );
// 输出结果
if (map == null || map.size() == 0 ) {
System.out.println( "验证成功" );
} else {
System.out.println( "验证失败,结果如下" );
System.out.println(map);
}
}
} |
3. 执行结果
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13 : 26 : 00 , 150 INFO ClassPathXmlApplicationContext: 510 - Refreshing org.springframework.context.support.ClassPathXmlApplicationContext @283b4947 : startup date [Tue Oct 07 13 : 26 : 00 CST 2014 ]; root of context hierarchy
13 : 26 : 00 , 194 INFO XmlBeanDefinitionReader: 315 - Loading XML bean definitions from class path resource [validationfo/spring/context.xml]
13 : 26 : 00 , 373 INFO DefaultListableBeanFactory: 598 - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory @212b0f8a : defining beans [springValidateConfig,basicValidateService,cc.fozone.validation.validators.SpringValidator# 0 ]; root of factory hierarchy
13 : 26 : 00 , 442 INFO BasicValidateConfig: 44 - read validation main file , validationfo/spring/rules.fo.xml
验证失败,结果如下 {email=邮件格式不正确, password=两次密码输入不正确, starttime=开始时间不能大于结束时间, endtime=结束时间不能小于开始时间} |
Validator验证器与规则
系统默认的验证器文件 validators.fo.xml
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<? xml version = "1.0" encoding = "UTF-8" ?>
< fozone-validators >
< validator name = "required" class = "cc.fozone.validation.validators.RequiredValidator" />
< validator name = "match" class = "cc.fozone.validation.validators.MatchValidator" />
< validator name = "between" class = "cc.fozone.validation.validators.BetweenValidator" />
< validator name = "min" class = "cc.fozone.validation.validators.MinValidator" />
< validator name = "max" class = "cc.fozone.validation.validators.MaxValidator" />
< validator name = "equals" class = "cc.fozone.validation.validators.EqualsValidator" />
< validator name = "timestampLessEqual" class = "cc.fozone.validation.validators.TimestampLessEqualValidator" />
< validator name = "timestampCreaterEqual" class = "cc.fozone.validation.validators.TimestampCreaterEqualValidator" />
< validator name = "spring" useSpring = "true" class = "cc.fozone.validation.validators.SpringValidator" />
</ fozone-validators >
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默认验证规则
required
- 必填字段
消息message: 必填
参数param: 无
案例:
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< group name = "user.validate" >
< field name = "username" >
< rule name = "required" message = "姓名必须填写。" />
</ field >
</ group >
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match
- 正则匹配
消息message: 必填
参数param: 有
Name | Must | Description |
---|---|---|
regex | Yes | 正则表达式,如果为空,验证直接返回true |
案例:
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< group name = "user.validate" >
< field name = "email" >
< rule name = "match" message = "邮件格式不正确" >
< param name = "regex" value = "^[A-Za-z]+[\.\-_A-Za-z0-9]*@[A-Za-z0-9]+[\.\-_A-Za-z0-9]*$" />
</ rule >
</ field >
</ group >
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between
- 判断字符串或数组非空长度是否介于两者之间,min <= length <= max
消息message: 必填
参数param: 有
Name | Must | Description |
---|---|---|
min | Yes | 最小长度(包含) |
max | Yes | 最大长度(包含) |
案例:
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< group name = "user.validate" >
< field name = "email" >
< rule name = "between" message = "邮件长度应该3-100之间" >
< param name = "min" value = "3" />
< param name = "max" value = "100" />
</ rule >
</ field >
</ group >
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min
- 判断字符串或数组非空长度是否大于等于最小长度,length >= min
消息message: 必填
参数param: 有
Name | Must | Description |
---|---|---|
value | Yes | 最小长度(包含) |
案例:
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< group name = "user.validate" >
< field name = "password" >
< rule name = "min" message = "密码至少5个字符" >
< param name = "value" value = "5" />
</ rule >
</ field >
</ group >
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max
- 判断字符串或数组非空长度是否小于等于最大长度,length <= max
消息message: 必填
参数param: 有
Name | Must | Description |
---|---|---|
value | Yes | 最大长度(包含) |
案例:
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< group name = "user.validate" >
< field name = "password" >
< rule name = "max" message = "密码最多20个字符" >
< param name = "value" value = "20" />
</ rule >
</ field >
</ group >
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equals
- 判断字段是否与指定的字段值是否相同
消息message: 必填
参数param: 有
Name | Must | Description |
---|---|---|
target | Yes | 指定的字段名称,并非确定的值 |
案例:
POJO对象部分字段
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public class User {
private String password;
private String passwordOne;
} |
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< group name = "user.validate" >
< field name = "password" >
< rule name = "equals" message = "两次输入的密码不相同" >
< param name = "target" value = "passwordOne" />
</ rule >
</ field >
</ group >
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注:这里会将
password
与目标passwordOne
字段的值进行equals
比较
有些时候你可能需要重写equals
方法
timestampLessEqual
- 时间戳是否小于等于指定的目标时间字段
消息message: 必填
参数param: 有
Name | Must | Description |
---|---|---|
target | Yes | 指定的时间字段名称,并非确定的值 |
案例:
POJO对象部分字段
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public class User {
private Timestamp starttime;
private Timestamp endtime;
} |
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< group name = "user.validate" >
< field name = "starttime" >
< rule name = "timestampLessEqual" message = "开始时间不能大于结束时间" >
< param name = "target" value = "endtime" />
</ rule >
</ field >
</ group >
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注:
-
这里会将
starttime
与目标endtime
字段的值进行大小比较 -
这里的字段必须是
java.sql.Timestamp
类型
timestampCreaterEqual
- 时间戳是否大于等于指定的目标时间字段
消息message: 必填
参数param: 有
Name | Must | Description |
---|---|---|
target | Yes | 指定的时间字段名称,并非确定的值 |
案例:
POJO对象部分字段
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public class User {
private Timestamp starttime;
private Timestamp endtime;
} |
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< group name = "user.validate" >
< field name = "endtime" >
< rule name = "timestampCreaterEqual" message = "结束时间不能小于开始时间" >
< param name = "target" value = "starttime" />
</ rule >
</ field >
</ group >
|
注:
-
这里会将
endtime
与目标starttime
字段的值进行大小比较 -
这里的字段必须是
java.sql.Timestamp
类型
spring
- 通过Spring调用其他对象的指定方法进行判断
DEMO: 点击查看
消息message: 必填
参数param: 有
Name | Must | Description |
---|---|---|
beanName | Yes | Spring Context中的Bean标识 |
methodName | Yes | Bean对象中的指定执行方法,该方法必须返回 boolean 类型 |
parameterName | No | 执行方法中传递的参数,**默认** 传递被验证字段的值,如果使用**this** 表示传递被验证的对象, 其他 表示传递对象指定的字段 |
案例:
POJO对象部分字段
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public class User {
private String username;
private int usernameLength;
} |
验证配置
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< group name = "user.validate" >
< field name = "username" >
< rule name = "spring" message = "该用户已存在" >
< param name = "beanName" value = "userService" />
< param name = "methodName" value = "exist" />
</ rule >
</ field >
< field name = "usernameLength" >
<!-- 使用 this 关键字 -->
< rule name = "spring" message = "用户名长度验证错误" >
< param name = "beanName" value = "userService" />
< param name = "methodName" value = "length" />
< param name = "parameter" value = "this" />
</ rule >
<!-- 指定字段 -->
< rule name = "spring" message = "用户名长度不能小于5个字符" >
< param name = "beanName" value = "userService" />
< param name = "methodName" value = "lengthByName" />
< param name = "parameter" value = "username" />
</ rule >
</ field >
</ group >
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Spring中的配置
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< beans >
<!-- 通过Spring进行验证 -->
< bean id = "userService" class = "validationfo.springadvance.UserService" />
</ beans >
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通过Spring验证的接口
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package validationfo.springadvance;
public class UserService {
public boolean exist(String value) {
return ! "superman" .equals(value);
}
public boolean length(User user){
return user.getUsername().length() == user.getUsernameLength();
}
public boolean lengthByName(String username){
return username.length() >= 5 ;
}
} |
注:
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要启用spring配置,需要参照上述的 如何在Spring使用 进行Spring与Validation.FO的整合配置
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指定的对象方法必须返回 boolean 类型
高级部分:如何自定义验证器 IValidator
-
实现
IValidator
接口 -
在
validators.fo.xml
验证器配置中添加已实现的验证器
一个简单的例子
POJO对象
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package validationfo.custom;
public class Money {
private int number;
private String text;
...
} |
CustomValidator实现
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package validationfo.custom;
/** * 构造一个判断 参数 是否能够被 指定的值 整出的验证器
* 例如:对象值为4 ,验证参数为2,那么 4可以被2整除,表示成功
*
* @author Jimmy Song
*
*/
public class CustomValidator implements IValidator {
private static final Logger logger = Logger.getLogger(CustomValidator. class );
/**
* 要处理的对象
* @param context 上下文
* @param type 对象类型
* @param value 对象值
* @param rule 对象参数
* @return 是否成功
*/
public boolean execute(Object context, Class type, Object value, Rule rule) {
// TODO Auto-generated method stub
/**
* 这里只是演示一下context的用处
* 可以通过context以及反射获取对象的属性值
* 举个例子
*/
try {
System.out.println( "TEXT = " +PropertyUtils.getProperty(context, "text" ));
} catch (Exception e1) {
// TODO Auto-generated catch block
}
/**
* 通过 value 实际验证的值
*/
if (value == null ) return true ;
/**
* 通过 type 获取值的类型
*/
if (!(type == Integer. class || type == int . class )) {
return false ;
}
int objectValue = ((Integer)value).intValue();
/**
* 通过 rule 获取规则参数
*/
String toValue = rule.getParameter( "value" );
if (StringUtils.isBlank(toValue)) return false ;
int intValue = - 1 ;
try {
intValue = Integer.parseInt(toValue);
} catch (NumberFormatException e){
logger.error( "倍数值转换错误!" );
return false ;
}
if (intValue <= 0 ) {
logger.warn( "倍数值不能小于等于0" );
return false ;
}
return objectValue % intValue == 0 ;
}
} |
配置 validators.fo.xml 中添加自定义验证器
关于validators.fo.xml配置的参数说明
语法 : <validator name="" useSpring="true|false" class="" beanId=""/>
参数名 | 必填 | 含义 |
---|---|---|
name | 是 | 验证器名称 |
useSpring | 否 | 是否通过 Spring 实例化验证器,这样做可以为验证器注入 ApplicationContext |
class | 否 | 当 useSpring=false 时,按照正常的方式进行实例化;当 useSpring=true 时,且使用了 beanId ,则 class 无效,如果没有使用 beanId ,那么 Spring 通过 class 进行实例化 |
beanId | 否 | Spring中的bean id |
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<? xml version = "1.0" encoding = "UTF-8" ?>
< fozone-validators >
...
< validator name = "custom" class = "validationfo.custom.CustomValidator" />
</ fozone-validators >
|
配置验证规则
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<? xml version = "1.0" encoding = "UTF-8" ?>
< fozone-validation >
<!-- 验证组ID,全局唯一 -->
< group name = "money.validate" >
<!-- 验证字段 -->
< field name = "number" >
< rule name = "custom" message = "验证失败,不能被指定的数整除" >
< param name = "value" value = "3" />
</ rule >
</ field >
</ group >
</ fozone-validation >
|
执行测试
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package validationfo.custom;
public class CustomTest {
public static void main(String[] args) {
/**
* Validation.FO的配置资源
*/
// 验证器配置,系统默认配置
String validatorsXML = "validationfo/custom/validators.fo.xml" ;
// 规则配置
String rulesXML = "validationfo/custom/rules.fo.xml" ;
/**
* 实例化配置对象
*/
IValidateConfig config = new BasicValidateConfig(validatorsXML, rulesXML);
/**
* 实例化验证服务层
*/
IValidateService validateService = new BasicValidateService(config);
// 实例化数据
Money money = new Money();
money.setNumber( 7 );
money.setText( "演示Context使用的Text" );
/**
* 执行验证
*/
Map<String,String> map = validateService.validate(money, "money.validate" );
// 输出结果
if (map == null || map.size() == 0 ) {
System.out.println( "验证成功" );
} else {
System.out.println( "验证失败,结果如下" );
System.out.println(map);
}
}
} |
结果输出
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16 : 44 : 17 , 178 INFO BasicValidateConfig: 44 - read validation main file , validationfo/custom/rules.fo.xml
TEXT = 演示Context使用的Text 验证失败,结果如下 {number=验证失败,不能被指定的数整除} |