1.工程目录结构图:
2.以下依次帖代码:
a). web.xml
f). validators.xml
validator.validators目录下default.xml里面的配置信息.最后一个 <validator name="mydate" class="com.tangjun.validator.DateEx"/>就是我添加的默认验证器类型.
g). ValidatorAction
i). DateEx
// 获得字段的名字
String fieldName = getFieldName();
// 获得输入界面输入的值
String value = getFieldValue(fieldName, object).toString();
总结
2.以下依次帖代码:
a). web.xml
<?
xml version="1.0" encoding="UTF-8"
?>
< web-app version ="2.4" xmlns ="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation ="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" >
< 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 > ValidatorDate.jsp </ welcome-file >
</ welcome-file-list >
</ web-app >
b).
struts.xml
< web-app version ="2.4" xmlns ="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation ="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" >
< 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 > ValidatorDate.jsp </ welcome-file >
</ welcome-file-list >
</ web-app >
<?
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 >
< include file ="struts-validation.xml" />
</ struts >
c).
struts.properties
<! DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd" >
< struts >
< include file ="struts-validation.xml" />
</ struts >
struts.ui.theme=simple
d).
struts-validation.xml
<!
DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd" >
< struts >
< package name ="validationExamples" extends ="struts-default"
namespace ="/validation" >
< action name ="ValidatorField"
class ="com.tangjun.validator.ValidatorAction" >
<!-- 这里input表示验证失败后指定跳转到什么地方去 -->
< result name ="input" type ="dispatcher" > /ValidatorDate.jsp </ result >
< result > /success.jsp </ result >
</ action >
</ package >
</ struts >
e).
ValidatorAction-validation.xml"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd" >
< struts >
< package name ="validationExamples" extends ="struts-default"
namespace ="/validation" >
< action name ="ValidatorField"
class ="com.tangjun.validator.ValidatorAction" >
<!-- 这里input表示验证失败后指定跳转到什么地方去 -->
< result name ="input" type ="dispatcher" > /ValidatorDate.jsp </ result >
< result > /success.jsp </ result >
</ action >
</ package >
</ struts >
<?
xml version="1.0" encoding="UTF-8"
?>
<! DOCTYPE validators PUBLIC
"-//OpenSymphony Group//XWork Validator 1.0.2//EN"
"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd" >
< validators >
< field name ="regexYearField" >
< field-validator type ="mydate" >
< param name ="maxYear" > 2008 </ param >
< param name ="minYear" > 1900 </ param >
< message >
<![CDATA[ 不是一个有效的年份! ]]>
</ message >
</ field-validator >
</ field >
< field name ="regexMonthField" >
< field-validator type ="mydate" >
< message >
<![CDATA[ 不是一个有效的月份! ]]>
</ message >
</ field-validator >
</ field >
< field name ="regexDayField" >
< field-validator type ="mydate" >
<!-- 是否使用正则表达式验证日期 -->
< param name ="isRegex" > false </ param >
<!-- 使用自定义正则表达式验证日期 -->
<!--
<param name="expression"></param>
-->
< message >
<![CDATA[ 当前月份的天数不对! ]]>
</ message >
</ field-validator >
</ field >
</ validators >
说明:验证文件需要和Action在同一目录下, 验证文件命名规则:验证文件xxxx-validation.xml,这个xxxx就是你前面action的类名字,xxx-xxx-validation.xml第二个xxx表示是别名.
<! DOCTYPE validators PUBLIC
"-//OpenSymphony Group//XWork Validator 1.0.2//EN"
"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd" >
< validators >
< field name ="regexYearField" >
< field-validator type ="mydate" >
< param name ="maxYear" > 2008 </ param >
< param name ="minYear" > 1900 </ param >
< message >
<![CDATA[ 不是一个有效的年份! ]]>
</ message >
</ field-validator >
</ field >
< field name ="regexMonthField" >
< field-validator type ="mydate" >
< message >
<![CDATA[ 不是一个有效的月份! ]]>
</ message >
</ field-validator >
</ field >
< field name ="regexDayField" >
< field-validator type ="mydate" >
<!-- 是否使用正则表达式验证日期 -->
< param name ="isRegex" > false </ param >
<!-- 使用自定义正则表达式验证日期 -->
<!--
<param name="expression"></param>
-->
< message >
<![CDATA[ 当前月份的天数不对! ]]>
</ message >
</ field-validator >
</ field >
</ validators >
f). validators.xml
<
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" />
< validator name ="mydate" class ="com.tangjun.validator.DateEx" />
</ validators >
说明:在源码com.opensymphony.xwork2.validator.ValidatorFactory中,在325行至330那一段代码可以看出,如果不能在根目录下找到validators.xml文件,验证框架将调用默认的验证设置,即com.opensymphony.xwork2.
< 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" />
< validator name ="mydate" class ="com.tangjun.validator.DateEx" />
</ validators >
validator.validators目录下default.xml里面的配置信息.最后一个 <validator name="mydate" class="com.tangjun.validator.DateEx"/>就是我添加的默认验证器类型.
g). ValidatorAction
package
com.tangjun.validator;
import com.opensymphony.xwork2.ActionSupport;
/**
* 验证日期
*
* @author lzl
*
*/
public class ValidatorAction extends ActionSupport {
private static final long serialVersionUID = - 4829381083003175423L ;
private Integer regexYearField;
private Integer regexMonthField;
private Integer regexDayField;
public ValidatorAction()
{
regexYearField = null ;
regexMonthField = null ;
regexDayField = null ;
}
@Override
public String execute() throws Exception {
return SUCCESS;
}
public Integer getRegexDayField() {
return regexDayField;
}
public void setRegexDayField(Integer regexDayField) {
this .regexDayField = regexDayField;
}
public Integer getRegexMonthField() {
return regexMonthField;
}
public void setRegexMonthField(Integer regexMonthField) {
this .regexMonthField = regexMonthField;
}
public Integer getRegexYearField() {
return regexYearField;
}
public void setRegexYearField(Integer regexYearField) {
this .regexYearField = regexYearField;
}
}
h). BeanUtils
import com.opensymphony.xwork2.ActionSupport;
/**
* 验证日期
*
* @author lzl
*
*/
public class ValidatorAction extends ActionSupport {
private static final long serialVersionUID = - 4829381083003175423L ;
private Integer regexYearField;
private Integer regexMonthField;
private Integer regexDayField;
public ValidatorAction()
{
regexYearField = null ;
regexMonthField = null ;
regexDayField = null ;
}
@Override
public String execute() throws Exception {
return SUCCESS;
}
public Integer getRegexDayField() {
return regexDayField;
}
public void setRegexDayField(Integer regexDayField) {
this .regexDayField = regexDayField;
}
public Integer getRegexMonthField() {
return regexMonthField;
}
public void setRegexMonthField(Integer regexMonthField) {
this .regexMonthField = regexMonthField;
}
public Integer getRegexYearField() {
return regexYearField;
}
public void setRegexYearField(Integer regexYearField) {
this .regexYearField = regexYearField;
}
}
package
com.tangjun.validator;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class BeanUtils {
/* 默认验证日期正则表达式 */
private static final String DateExpression = " (([0-9]{3}[1-9]|[0-9]{2}[1-9][0-9]{1}|[0-9]{1}[1-9][0-9]{2}|[1-9][0-9]{3})-(((0[13578]|1[02])-(0[1-9]|[12][0-9]|3[01]))|((0[469]|11)-(0[1-9]|[12][0-9]|30))|(02-(0[1-9]|[1][0-9]|2[0-8]))))|((([0-9]{2})(0[48]|[2468][048]|[13579][26])|((0[48]|[2468][048]|[3579][26])00))-02-29) " ;
/**
* 验证日期合法性(通过抛出错误方式来验证)
* @param date
* @return
*/
public static boolean validatorDate(String date) {
// 注意这个地方"yyyy-MM-dd"如果设置成了yyyy-mm-dd的话验证将失灵
SimpleDateFormat sdf = new SimpleDateFormat( " yyyy-MM-dd " );
// 这个的功能是不让系统自动转换 不把1996-13-3 转换为1997-3-1
sdf.setLenient( false );
try {
sdf.parse(date);
return true ;
} catch (ParseException e) {
return false ;
}
}
/**
* 使用正则表达式判定日期
*
* @param str
* @param expression
* @return
*/
public static boolean regexValidatorDate(String str, String expression) {
// 使用正则表达式进行判定
if (expression == null || expression.trim().length() == 0 )
expression = BeanUtils.DateExpression;
Pattern pattern;
// System.out.println(expression);
pattern = Pattern.compile(expression, 2 );
Matcher matcher = pattern.matcher(str.trim());
if ( ! matcher.matches()) {
return false ;
}
return true ;
}
}
说明:验证日期的正则表达式就是在网上找的,可以替换成自己的.
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class BeanUtils {
/* 默认验证日期正则表达式 */
private static final String DateExpression = " (([0-9]{3}[1-9]|[0-9]{2}[1-9][0-9]{1}|[0-9]{1}[1-9][0-9]{2}|[1-9][0-9]{3})-(((0[13578]|1[02])-(0[1-9]|[12][0-9]|3[01]))|((0[469]|11)-(0[1-9]|[12][0-9]|30))|(02-(0[1-9]|[1][0-9]|2[0-8]))))|((([0-9]{2})(0[48]|[2468][048]|[13579][26])|((0[48]|[2468][048]|[3579][26])00))-02-29) " ;
/**
* 验证日期合法性(通过抛出错误方式来验证)
* @param date
* @return
*/
public static boolean validatorDate(String date) {
// 注意这个地方"yyyy-MM-dd"如果设置成了yyyy-mm-dd的话验证将失灵
SimpleDateFormat sdf = new SimpleDateFormat( " yyyy-MM-dd " );
// 这个的功能是不让系统自动转换 不把1996-13-3 转换为1997-3-1
sdf.setLenient( false );
try {
sdf.parse(date);
return true ;
} catch (ParseException e) {
return false ;
}
}
/**
* 使用正则表达式判定日期
*
* @param str
* @param expression
* @return
*/
public static boolean regexValidatorDate(String str, String expression) {
// 使用正则表达式进行判定
if (expression == null || expression.trim().length() == 0 )
expression = BeanUtils.DateExpression;
Pattern pattern;
// System.out.println(expression);
pattern = Pattern.compile(expression, 2 );
Matcher matcher = pattern.matcher(str.trim());
if ( ! matcher.matches()) {
return false ;
}
return true ;
}
}
i). DateEx
package
com.tangjun.validator;
import java.util.HashMap;
import com.opensymphony.xwork2.validator.ValidationException;
import com.opensymphony.xwork2.validator.validators.FieldValidatorSupport;
public class DateEx extends FieldValidatorSupport {
private static HashMap < String, Integer > map = new HashMap < String, Integer > ();
/* 默认最大年限 */
private static final Integer MAX_YEAR = 2008 ;
/* 默认最小年限 */
private static final Integer MIN_YEAR = 1900 ;
/* 最大年限 */
private Integer maxYear;
/* 最小年限 */
private Integer minYear;
/* 验证日期的正则表达式 */
private String expression;
/* 是否使用正则表达式验证 */
private Boolean isRegex;
public DateEx() {
maxYear = null ;
minYear = null ;
expression = null ;
isRegex = false ;
}
public void validate(Object object) throws ValidationException {
// 获得字段的名字
String fieldName = getFieldName();
// 获得输入界面输入的值
String value = getFieldValue(fieldName, object).toString();
if (value == null || value.length() <= 0 )
return ;
if (fieldName.equals( " regexYearField " ))
validateYear(value, object);
else if (fieldName.equals( " regexMonthField " ))
validateMonth(value, object);
else if (fieldName.equals( " regexDayField " ))
validateDay(value, object);
}
/**
* 验证年份
*
* @param object
* @throws ValidationException
*/
private void validateYear(String value, Object object)
throws ValidationException {
/* 设置默认值 */
if (maxYear == null ) {
maxYear = MAX_YEAR;
}
if (minYear == null ) {
minYear = MIN_YEAR;
}
Integer temp = null ;
try {
temp = Integer.valueOf(value);
} catch (NumberFormatException ex) {
addFieldErrorEx(getFieldName(), object);
return ;
}
if (temp != null ) {
if (temp >= minYear && temp <= maxYear)
map.put( " year " , temp);
else
addFieldErrorEx(getFieldName(), object);
}
}
/**
* 验证月份
*
* @param object
* @throws ValidationException
*/
private void validateMonth(String value, Object object)
throws ValidationException {
try {
Integer temp = Integer.valueOf(value);
if (temp != null ) {
if (temp >= 1 && temp <= 12 )
map.put( " month " , temp);
else
addFieldErrorEx(getFieldName(), object);
}
} catch (NumberFormatException ex) {
addFieldErrorEx(getFieldName(), object);
return ;
}
}
/**
* 验证日期
*
* @param object
* @throws ValidationException
*/
private void validateDay(String value, Object object)
throws ValidationException {
try {
Integer temp = Integer.valueOf(value);
if (temp != null ) {
Integer year = map.get( " year " );
Integer month = map.get( " month " );
// 直接使用天数
if (year == null || month == null )
{
return ;
}
// 是否使用正则表达式验证
if ( ! isRegex) {
if ( ! BeanUtils.validatorDate(year + " - " + month + " - " + temp))
addFieldErrorEx(getFieldName(), object);
} else {
String StrDay = temp < 10 ? " 0 " + temp.toString() : temp
.toString();
String StrMonth = month < 10 ? " 0 " + month.toString()
: month.toString();
// 前面已经验证过了
// String StrYear = year < 100 ? year < 10 ? "200" + year: "19" + year : "1" + year;
String str = year + " - " + StrMonth + " - " + StrDay;
System.out.println( " Date: " + str);
if (expression == null ) {
if ( ! BeanUtils.regexValidatorDate(str, null ))
addFieldErrorEx(getFieldName(), object);
} else {
if (expression.trim().length() > 0 ) {
if (BeanUtils.regexValidatorDate(str, expression))
addFieldErrorEx(getFieldName(), object);
}
}
}
map.clear();
}
} catch (NumberFormatException ex) {
addFieldErrorEx(getFieldName(), object);
return ;
}
}
/**
* 控制是否只显示一条报错信息
*
* @param arg0
* @param arg1
*/
private void addFieldErrorEx(String arg0, Object arg1) {
// if (this.getValidatorContext().getFieldErrors().size() == 0)
addFieldError(arg0, arg1);
}
public Integer getMaxYear() {
return maxYear;
}
public void setMaxYear(Integer maxYear) {
this .maxYear = maxYear;
}
public Integer getMinYear() {
return minYear;
}
public void setMinYear(Integer minYear) {
this .minYear = minYear;
}
public String getExpression() {
return expression;
}
public void setExpression(String expression) {
this .expression = expression;
}
public Boolean getIsRegex() {
return isRegex;
}
public void setIsRegex(Boolean isRegex) {
this .isRegex = isRegex;
}
}
说明:在DateEx里面,这个时候你就可以参照如IntRangeFieldValidator(反编译源码)等他实现的验证器来写自己的验证器了。这里注意了,你在这个类里面每写一个属性(含get set方法),就对应的一个xxxx-validation.xml这个配置文件里面<param name="expression"></param>这个name的名字了,可以在扩展类里面直接获得了,根据传入参数进行自定义方式验证了。如下object是validate传进来的参数,表示你输入的数据对象:
import java.util.HashMap;
import com.opensymphony.xwork2.validator.ValidationException;
import com.opensymphony.xwork2.validator.validators.FieldValidatorSupport;
public class DateEx extends FieldValidatorSupport {
private static HashMap < String, Integer > map = new HashMap < String, Integer > ();
/* 默认最大年限 */
private static final Integer MAX_YEAR = 2008 ;
/* 默认最小年限 */
private static final Integer MIN_YEAR = 1900 ;
/* 最大年限 */
private Integer maxYear;
/* 最小年限 */
private Integer minYear;
/* 验证日期的正则表达式 */
private String expression;
/* 是否使用正则表达式验证 */
private Boolean isRegex;
public DateEx() {
maxYear = null ;
minYear = null ;
expression = null ;
isRegex = false ;
}
public void validate(Object object) throws ValidationException {
// 获得字段的名字
String fieldName = getFieldName();
// 获得输入界面输入的值
String value = getFieldValue(fieldName, object).toString();
if (value == null || value.length() <= 0 )
return ;
if (fieldName.equals( " regexYearField " ))
validateYear(value, object);
else if (fieldName.equals( " regexMonthField " ))
validateMonth(value, object);
else if (fieldName.equals( " regexDayField " ))
validateDay(value, object);
}
/**
* 验证年份
*
* @param object
* @throws ValidationException
*/
private void validateYear(String value, Object object)
throws ValidationException {
/* 设置默认值 */
if (maxYear == null ) {
maxYear = MAX_YEAR;
}
if (minYear == null ) {
minYear = MIN_YEAR;
}
Integer temp = null ;
try {
temp = Integer.valueOf(value);
} catch (NumberFormatException ex) {
addFieldErrorEx(getFieldName(), object);
return ;
}
if (temp != null ) {
if (temp >= minYear && temp <= maxYear)
map.put( " year " , temp);
else
addFieldErrorEx(getFieldName(), object);
}
}
/**
* 验证月份
*
* @param object
* @throws ValidationException
*/
private void validateMonth(String value, Object object)
throws ValidationException {
try {
Integer temp = Integer.valueOf(value);
if (temp != null ) {
if (temp >= 1 && temp <= 12 )
map.put( " month " , temp);
else
addFieldErrorEx(getFieldName(), object);
}
} catch (NumberFormatException ex) {
addFieldErrorEx(getFieldName(), object);
return ;
}
}
/**
* 验证日期
*
* @param object
* @throws ValidationException
*/
private void validateDay(String value, Object object)
throws ValidationException {
try {
Integer temp = Integer.valueOf(value);
if (temp != null ) {
Integer year = map.get( " year " );
Integer month = map.get( " month " );
// 直接使用天数
if (year == null || month == null )
{
return ;
}
// 是否使用正则表达式验证
if ( ! isRegex) {
if ( ! BeanUtils.validatorDate(year + " - " + month + " - " + temp))
addFieldErrorEx(getFieldName(), object);
} else {
String StrDay = temp < 10 ? " 0 " + temp.toString() : temp
.toString();
String StrMonth = month < 10 ? " 0 " + month.toString()
: month.toString();
// 前面已经验证过了
// String StrYear = year < 100 ? year < 10 ? "200" + year: "19" + year : "1" + year;
String str = year + " - " + StrMonth + " - " + StrDay;
System.out.println( " Date: " + str);
if (expression == null ) {
if ( ! BeanUtils.regexValidatorDate(str, null ))
addFieldErrorEx(getFieldName(), object);
} else {
if (expression.trim().length() > 0 ) {
if (BeanUtils.regexValidatorDate(str, expression))
addFieldErrorEx(getFieldName(), object);
}
}
}
map.clear();
}
} catch (NumberFormatException ex) {
addFieldErrorEx(getFieldName(), object);
return ;
}
}
/**
* 控制是否只显示一条报错信息
*
* @param arg0
* @param arg1
*/
private void addFieldErrorEx(String arg0, Object arg1) {
// if (this.getValidatorContext().getFieldErrors().size() == 0)
addFieldError(arg0, arg1);
}
public Integer getMaxYear() {
return maxYear;
}
public void setMaxYear(Integer maxYear) {
this .maxYear = maxYear;
}
public Integer getMinYear() {
return minYear;
}
public void setMinYear(Integer minYear) {
this .minYear = minYear;
}
public String getExpression() {
return expression;
}
public void setExpression(String expression) {
this .expression = expression;
}
public Boolean getIsRegex() {
return isRegex;
}
public void setIsRegex(Boolean isRegex) {
this .isRegex = isRegex;
}
}
// 获得字段的名字
String fieldName = getFieldName();
// 获得输入界面输入的值
String value = getFieldValue(fieldName, object).toString();
总结
验证器是拦截器即Interceptor实现的,所以并没有看见任何代码把他们和我的action文件关联起来,他们默认的验证了,这方面可以参考Max On Java的文章.
本文转自博客园农民伯伯的博客,原文链接:Struts2 自定义验证器,如需转载请自行联系原博主。