我正在努力验证我在基于 Spring Roo 的应用程序中的模型。让我们更详细地描述我到目前为止所拥有的内容：
public class Record {
// ... some other fields
@NotNull
@Future
@Temporal(TemporalType.TIMESTAMP)
@DateTimeFormat(style="M-")
Date generatedDate;
@AssertTrue(message="blahblahblah")
public Boolean isGeneratedDate() {
// validation code, let's presume it return false all the time
return false;
}
}
一旦我像这样运行它，我会得到以下异常：
SEVERE: Servlet.service() for servlet Portal threw exception
java.lang.IllegalArgumentException: The source to convert from must be an instance of @javax.validation.constraints.NotNull @javax.validation.constrai
nts.Future @javax.persistence.Temporal @org.springframework.format.annotation.DateTimeFormat java.util.Date; instead it was a java.lang.Boolean
at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:166)
at org.springframework.validation.AbstractPropertyBindingResult.formatFieldValue(AbstractPropertyBindingResult.java:125)
at org.springframework.validation.AbstractBindingResult.getFieldValue(AbstractBindingResult.java:222)
at org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:120)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getBindStatus(AbstractDataBoundFormElementTag.java:178)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getPropertyPath(AbstractDataBoundFormElementTag.java:198)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getName(AbstractDataBoundFormElementTag.java:164)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.writeDefaultAttributes(AbstractDataBoundFormElementTag.java:127)
at org.springframework.web.servlet.tags.form.AbstractHtmlElementTag.writeDefaultAttributes(AbstractHtmlElementTag.java:421)
at org.springframework.web.servlet.tags.form.InputTag.writeTagContent(InputTag.java:142)
at org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java:102)
at org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:79)
at org.apache.jsp.tag.web.form.fields.datetime_tagx._jspx_meth_form_005finput_005f0(datetime_tagx.java:711)
at org.apache.jsp.tag.web.form.fields.datetime_tagx.doTag(datetime_tagx.java:318)
at org.apache.jsp.WEB_002dINF.views.portationrecords.create_jspx._jspx_meth_field_005fdatetime_005f1(create_jspx.java:302)
at org.apache.jsp.WEB_002dINF.views.portationrecords.create_jspx.access$7(create_jspx.java:281)
at org.apache.jsp.WEB_002dINF.views.portationrecords.create_jspx$Helper.invoke0(create_jspx.java:378)
at org.apache.jsp.WEB_002dINF.views.portationrecords.create_jspx$Helper.invoke(create_jspx.java:397)
at org.apache.jsp.tag.web.form.create_tagx$Helper.invoke0(create_tagx.java:688)
at org.apache.jsp.tag.web.form.create_tagx$Helper.invoke(create_tagx.java:729)
at org.apache.jsp.tag.web.util.panel_tagx._jspx_meth_c_005fif_005f0(panel_tagx.java:184)
at org.apache.jsp.tag.web.util.panel_tagx.doTag(panel_tagx.java:130)
at org.apache.jsp.tag.web.form.create_tagx.doTag(create_tagx.java:233)
at org.apache.jsp.WEB_002dINF.views.portationrecords.create_jspx._jspx_meth_form_005fcreate_005f0(create_jspx.java:102)
at org.apache.jsp.WEB_002dINF.views.portationrecords.create_jspx._jspService(create_jspx.java:66)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488)
at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968)
at org.apache.jasper.runtime.PageContextImpl.doInclude(PageContextImpl.java:650)
at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:644)
at org.apache.tiles.jsp.context.JspTilesRequestContext.include(JspTilesRequestContext.java:103)
at org.apache.tiles.jsp.context.JspTilesRequestContext.dispatch(JspTilesRequestContext.java:96)
at org.apache.tiles.renderer.impl.TemplateAttributeRenderer.write(TemplateAttributeRenderer.java:44)
at org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:106)
at org.apache.tiles.renderer.impl.ChainedDelegateAttributeRenderer.write(ChainedDelegateAttributeRenderer.java:76)
at org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:106)
at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:670)
at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:336)
at org.apache.tiles.template.InsertAttributeModel.renderAttribute(InsertAttributeModel.java:210)
at org.apache.tiles.template.InsertAttributeModel.end(InsertAttributeModel.java:126)
at org.apache.tiles.jsp.taglib.InsertAttributeTag.doTag(InsertAttributeTag.java:311)
at org.apache.jsp.WEB_002dINF.layouts.default_jspx._jspx_meth_tiles_005finsertAttribute_005f2(default_jspx.java:224)
at org.apache.jsp.WEB_002dINF.layouts.default_jspx._jspService(default_jspx.java:87)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
at org.apache.tiles.servlet.context.ServletTilesRequestContext.forward(ServletTilesRequestContext.java:241)
at org.apache.tiles.servlet.context.ServletTilesRequestContext.dispatch(ServletTilesRequestContext.java:222)
at org.apache.tiles.renderer.impl.TemplateAttributeRenderer.write(TemplateAttributeRenderer.java:44)
at org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:106)
at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:670)
at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:690)
at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:644)
at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:627)
at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:321)
at org.springframework.web.servlet.view.tiles2.TilesView.renderMergedOutputModel(TilesView.java:124)
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:262)
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1180)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:950)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:147)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:311)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:116)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:101)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:5
4)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java
:182)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
看起来 Spring（或 Roo？）正在尝试获取验证结果并将其显示在 jspx 中。在视图中，我使用由 Roo 生成的 create.jspx，其中该标记定义如下：
<field:datetime dateTimePattern="${record_generateddate_date_format}" field="generatedDate" future="true" id="c_com_namespace_Record_generatedDate" required="true" z="ByZXwLcdD87pSCjgpCV7ac0ASq4="/>
我还观察到，一旦我将验证方法重命名为isValid()，验证将正确运行，尽管这次不存在的字段valid被标记为导致问题（显然基于方法的名称）。结果，我无法在视图中显示正确字段的消息。（是的，我可以切换它RecordController，但感觉太不对了）。任何提示如何克服这个问题？