Struts输入校验遇到的问题
我在学习输入校验的时候，暂时不想用国际化的方式提示信息，所有的提示信息都是通过硬编码的方式写在RegistAction-validations.xml文件中的，
当我把regist.jsp的页面改为适应Struts标签来生成表单，并且为该表单增加validate="true"的属性，还是会出现
如下的错误提示：
FreeMarker template error!Method public java.util.List org.apache.struts2.components.Form.getValidators(java.lang.String) threw an exception when invoked on org.apache.struts2.components.Form@6d2d49e7
The problematic instruction:
----------
==> list tag.getValidators("${tagName}") as validator [on line 46, column 9 in template/xhtml/form-close-validate.ftl]
in include "/${parameters.templateDir}/xhtml/form-close-validate.ftl" [on line 25, column 1 in template/xhtml/form-close.ftl]
----------Java backtrace for programmers:
----------
freeer.template.TemplateModelException: Method public java.util.List org.apache.struts2.components.Form.getValidators(java.lang.String) threw an exception when invoked on org.apache.struts2.components.Form@6d2d49e7
at freeer.ext.beans.SimpleMethodModel.exec(SimpleMethodModel.java:130)
at freeer.core.MethodCall._getAsTemplateModel(MethodCall.java:93)
at freeer.core.Expression.getAsTemplateModel(Expression.java:89)
at freeer.core.IteratorBlock.accept(IteratorBlock.java:94)
at freeer.core.Environment.visit(Environment.java:210)
at freeer.core.IteratorBlock$Context.runLoop(IteratorBlock.java:167)
at freeer.core.Environment.visit(Environment.java:417)
at freeer.core.IteratorBlock.accept(IteratorBlock.java:102)
at freeer.core.Environment.visit(Environment.java:210)
at freeer.core.MixedContent.accept(MixedContent.java:92)
at freeer.core.Environment.visit(Environment.java:210)
at freeer.core.ConditionalBlock.accept(ConditionalBlock.java:79)
at freeer.core.Environment.visit(Environment.java:210)
at freeer.core.MixedContent.accept(MixedContent.java:92)
at freeer.core.Environment.visit(Environment.java:210)
at freeer.core.Environment.include(Environment.java:1483)
at freeer.core.Include.accept(Include.java:169)
at freeer.core.Environment.visit(Environment.java:210)
at freeer.core.MixedContent.accept(MixedContent.java:92)
at freeer.core.Environment.visit(Environment.java:210)
at freeer.core.Environment.process(Environment.java:190)
at freeer.template.Template.process(Template.java:237)
at org.apache.struts2.components.template.FreeerTemplateEngine.renderTemplate(FreeerTemplateEngine.java:157)
at org.apache.struts2.components.UIBean.mergeTemplate(UIBean.java:559)
at org.apache.struts2.components.UIBean.end(UIBean.java:513)
at org.apache.struts2.views.jsp.ComponentTagSupport.doEndTag(ComponentTagSupport.java:42)
at org.apache.jsp.regist_jsp._jspx_meth_s_005fform_005f0(regist_jsp.java:209)
at org.apache.jsp.regist_jsp._jspService(regist_jsp.java:114)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:88)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:928)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:300)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.NullPointerException
at com.opensymphony.xwork2.validator.AnnotationActionValidatorManager.buildValidatorKey(AnnotationActionValidatorManager.java:212)
at com.opensymphony.xwork2.validator.AnnotationActionValidatorManager.getValidators(AnnotationActionValidatorManager.java:69)
at com.opensymphony.xwork2.validator.AnnotationActionVal
如何解决！！
我在学习输入校验的时候，暂时不想用国际化的方式提示信息，所有的提示信息都是通过硬编码的方式写在RegistAction-validations.xml文件中的，
当我把regist.jsp的页面改为适应Struts标签来生成表单，并且为该表单增加validate="true"的属性，还是会出现
如下的错误提示：
FreeMarker template error!Method public java.util.List org.apache.struts2.components.Form.getValidators(java.lang.String) threw an exception when invoked on org.apache.struts2.components.Form@6d2d49e7
The problematic instruction:
----------
==> list tag.getValidators("${tagName}") as validator [on line 46, column 9 in template/xhtml/form-close-validate.ftl]
in include "/${parameters.templateDir}/xhtml/form-close-validate.ftl" [on line 25, column 1 in template/xhtml/form-close.ftl]
----------Java backtrace for programmers:
----------
freeer.template.TemplateModelException: Method public java.util.List org.apache.struts2.components.Form.getValidators(java.lang.String) threw an exception when invoked on org.apache.struts2.components.Form@6d2d49e7
at freeer.ext.beans.SimpleMethodModel.exec(SimpleMethodModel.java:130)
at freeer.core.MethodCall._getAsTemplateModel(MethodCall.java:93)
at freeer.core.Expression.getAsTemplateModel(Expression.java:89)
at freeer.core.IteratorBlock.accept(IteratorBlock.java:94)
at freeer.core.Environment.visit(Environment.java:210)
at freeer.core.IteratorBlock$Context.runLoop(IteratorBlock.java:167)
at freeer.core.Environment.visit(Environment.java:417)
at freeer.core.IteratorBlock.accept(IteratorBlock.java:102)
at freeer.core.Environment.visit(Environment.java:210)
at freeer.core.MixedContent.accept(MixedContent.java:92)
at freeer.core.Environment.visit(Environment.java:210)
at freeer.core.ConditionalBlock.accept(ConditionalBlock.java:79)
at freeer.core.Environment.visit(Environment.java:210)
at freeer.core.MixedContent.accept(MixedContent.java:92)
at freeer.core.Environment.visit(Environment.java:210)
at freeer.core.Environment.include(Environment.java:1483)
at freeer.core.Include.accept(Include.java:169)
at freeer.core.Environment.visit(Environment.java:210)
at freeer.core.MixedContent.accept(MixedContent.java:92)
at freeer.core.Environment.visit(Environment.java:210)
at freeer.core.Environment.process(Environment.java:190)
at freeer.template.Template.process(Template.java:237)
at org.apache.struts2.components.template.FreeerTemplateEngine.renderTemplate(FreeerTemplateEngine.java:157)
at org.apache.struts2.components.UIBean.mergeTemplate(UIBean.java:559)
at org.apache.struts2.components.UIBean.end(UIBean.java:513)
at org.apache.struts2.views.jsp.ComponentTagSupport.doEndTag(ComponentTagSupport.java:42)
at org.apache.jsp.regist_jsp._jspx_meth_s_005fform_005f0(regist_jsp.java:209)
at org.apache.jsp.regist_jsp._jspService(regist_jsp.java:114)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:88)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:928)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:300)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.NullPointerException
at com.opensymphony.xwork2.validator.AnnotationActionValidatorManager.buildValidatorKey(AnnotationActionValidatorManager.java:212)
at com.opensymphony.xwork2.validator.AnnotationActionValidatorManager.getValidators(AnnotationActionValidatorManager.java:69)
at com.opensymphony.xwork2.validator.AnnotationActionVal
如何解决！！
<!-- 指定校验配置文件的DTD信息 -->
<!DOCTYPE validators PUBLIC
"-//OpenSymphony Group//XWork Validator 1.0.3//EN"
"http://www.opensymphony.com/xwork/xwork-validator-1.0.3.dtd">
<!-- 校验文件的根元素 -->
<validators>
<!-- 校验Action的name属性 -->
<field name="username">
<!-- 指定name属性必须满足必填规则 -->
<field-validator type="requiredstring">
<param name="trim">true</param>
<message>必须输入名字</message>
</field-validator>
<!-- 指定name属性必须匹配正则表达式 -->
<field-validator type="regex">
<param name="expression"><![CDATA[(\w{4,25})]]></param>
<message>您输入的用户名只能是字母和数字，且长度必须在4到25之间</message>
</field-validator>
</field>
<!-- 校验Action的pass属性 -->
<field name="password">
<!-- 指定pass属性必须满足必填规则 -->
<field-validator type="requiredstring">
<param name="trim">true</param>
<message>必须输入密码</message>
</field-validator>
<!-- 指定pass属性必须满足匹配指定的正则表达式 -->
<field-validator type="regex">
<param name="expression"><![CDATA[(\w{4,25})]]></param>
<message>您输入的密码只能是字母和数字，且长度必须在4到25之间</message>
</field-validator>
</field>
<!-- 指定age属性必须在指定范围内 -->
<field name="age">
<field-validator type="int">
<param name="min">1</param>
<param name="max">150</param>
<message>年龄必须在1到150之间</message>
</field-validator>
</field>
<!-- 指定birth属性必须在指定范围内 -->
<field name="birthday">
<field-validator type="date">
<!-- 下面指定日期字符串时，必须使用本Locale的日期格式 -->
<param name="min">1900-01-01</param>
<param name="max">2050-02-21</param>
<message>生日必须在${min}到${max}之间</message>
</field-validator>
</field>
</validators>