Spring Webflow：字段类型是必需的

时间：2013-02-04 12:18:14

标签： spring spring-mvc tags spring-webflow

我一直在努力解决以下错误。

java.lang.IllegalArgumentException: The field type is required

我有一个基本的屏幕流程设置有3个屏幕。

  • 屏幕1：身份

  • 屏幕2：联系信息

  • 屏幕3：摘要

从屏幕1我接收文本字段：

<form:form modelAttribute="booking" action="${flowExecutionUrl}" method="post">
     User Name: 
     <form:input type="text" id="username" name="username" path="username"/>
     <input type="submit" name="_eventId_next" value="next" />
     <input type="submit" name="_eventId_cancel" value="Cancel" />
</form:form>

这在点击摘要时有效，因为我可以在摘要屏幕上显示$ {booking.username}的内容。

但是在屏幕2上，当我尝试完全相同但使用不同的数据字段时，会出现上面指定的错误。

屏幕2：

<form:form modelAttribute="booking" action="${flowExecutionUrl}" method="post">
     Address 1:
     <form:input type="text" id="address1" name="address1" path="address1"/>
     <input type="submit" name="_eventId_next" value="Next"/>
     <input type="submit" name="_eventId_cancel" value="Cancel"/>
</form:form>

表格标签如下：

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>

大多数代码都可以在我之前的问题上查看：

Full Code

当我尝试将表单标记添加到选项下拉框字段时，会发生同样的错误。

<form:select id="requestType" name="requestType" path="requestType">
    <form:option value="0"></option> 
    <form:option value="1">Oprion 1</option>
    <form:option value="2">Option 2</option>
</form:select>

我还试过

而不是选项标签 
<form:input type="text" label="" value="0"/>

所有人都会将指向这些行的相同错误视为错误。

谢谢。

编辑：

堆栈跟踪： 例外

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.webflow.execution.FlowExecutionException: Exception thrown in state 'enterContactDetails' of flow 'flow-config'
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:894)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)


root cause 

org.springframework.webflow.execution.FlowExecutionException: Exception thrown in state 'enterContactDetails' of flow 'flow-config'
    org.springframework.webflow.engine.impl.FlowExecutionImpl.wrap(FlowExecutionImpl.java:571)
    org.springframework.webflow.engine.impl.FlowExecutionImpl.resume(FlowExecutionImpl.java:262)
    org.springframework.webflow.executor.FlowExecutorImpl.resumeExecution(FlowExecutorImpl.java:169)
    org.springframework.webflow.mvc.servlet.FlowHandlerAdapter.handle(FlowHandlerAdapter.java:183)
    org.springframework.webflow.mvc.servlet.FlowController.handleRequest(FlowController.java:174)
    org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)


root cause 

java.lang.IllegalStateException: Exception occurred rendering view org.springframework.web.servlet.view.JstlView: name 'account/BookingContactDetailsScreen'; URL [/WEB-INF/views/account/BookingContactDetailsScreen.jsp]
    org.springframework.webflow.mvc.view.AbstractMvcView.render(AbstractMvcView.java:191)
    org.springframework.webflow.engine.ViewState.render(ViewState.java:296)
    org.springframework.webflow.engine.ViewState.refresh(ViewState.java:243)
    org.springframework.webflow.engine.ViewState.resume(ViewState.java:221)
    org.springframework.webflow.engine.Flow.resume(Flow.java:545)
    org.springframework.webflow.engine.impl.FlowExecutionImpl.resume(FlowExecutionImpl.java:258)
    org.springframework.webflow.executor.FlowExecutorImpl.resumeExecution(FlowExecutorImpl.java:169)
    org.springframework.webflow.mvc.servlet.FlowHandlerAdapter.handle(FlowHandlerAdapter.java:183)
    org.springframework.webflow.mvc.servlet.FlowController.handleRequest(FlowController.java:174)
    org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)


root cause 

org.apache.jasper.JasperException: java.lang.IllegalArgumentException: The field type is required
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:549)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
    org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:262)
    org.springframework.webflow.mvc.servlet.ServletMvcView.doRender(ServletMvcView.java:50)
    org.springframework.webflow.mvc.view.AbstractMvcView.render(AbstractMvcView.java:187)
    org.springframework.webflow.engine.ViewState.render(ViewState.java:296)
    org.springframework.webflow.engine.ViewState.refresh(ViewState.java:243)
    org.springframework.webflow.engine.ViewState.resume(ViewState.java:221)
    org.springframework.webflow.engine.Flow.resume(Flow.java:545)
    org.springframework.webflow.engine.impl.FlowExecutionImpl.resume(FlowExecutionImpl.java:258)
    org.springframework.webflow.executor.FlowExecutorImpl.resumeExecution(FlowExecutorImpl.java:169)
    org.springframework.webflow.mvc.servlet.FlowHandlerAdapter.handle(FlowHandlerAdapter.java:183)
    org.springframework.webflow.mvc.servlet.FlowController.handleRequest(FlowController.java:174)
    org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)


root cause 

java.lang.IllegalArgumentException: The field type is required
    org.springframework.util.Assert.notNull(Assert.java:112)
    org.springframework.webflow.mvc.view.ConvertingPropertyEditorAdapter.<init>(ConvertingPropertyEditorAdapter.java:48)
    org.springframework.webflow.mvc.view.BindingModel.findSpringConvertingPropertyEditor(BindingModel.java:277)
    org.springframework.webflow.mvc.view.BindingModel.getFormattedValue(BindingModel.java:235)
    org.springframework.webflow.mvc.view.BindingModel.getFieldValue(BindingModel.java:142)
    org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:120)
    org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getBindStatus(AbstractDataBoundFormElementTag.java:178)
    org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getPropertyPath(AbstractDataBoundFormElementTag.java:198)
    org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getName(AbstractDataBoundFormElementTag.java:164)
    org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.writeDefaultAttributes(AbstractDataBoundFormElementTag.java:127)
    org.springframework.web.servlet.tags.form.AbstractHtmlElementTag.writeDefaultAttributes(AbstractHtmlElementTag.java:421)
    org.springframework.web.servlet.tags.form.InputTag.writeTagContent(InputTag.java:142)
    org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java:102)
    org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:79)
    org.apache.jsp.WEB_002dINF.views.account.BookingContactDetailsScreen_jsp._jspx_meth_form_005finput_005f0(BookingContactDetailsScreen_jsp.java:230)
    org.apache.jsp.WEB_002dINF.views.account.BookingContactDetailsScreen_jsp._jspx_meth_form_005fform_005f0(BookingContactDetailsScreen_jsp.java:127)
    org.apache.jsp.WEB_002dINF.views.account.BookingContactDetailsScreen_jsp._jspService(BookingContactDetailsScreen_jsp.java:85)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
    org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:262)
    org.springframework.webflow.mvc.servlet.ServletMvcView.doRender(ServletMvcView.java:50)
    org.springframework.webflow.mvc.view.AbstractMvcView.render(AbstractMvcView.java:187)
    org.springframework.webflow.engine.ViewState.render(ViewState.java:296)
    org.springframework.webflow.engine.ViewState.refresh(ViewState.java:243)
    org.springframework.webflow.engine.ViewState.resume(ViewState.java:221)
    org.springframework.webflow.engine.Flow.resume(Flow.java:545)
    org.springframework.webflow.engine.impl.FlowExecutionImpl.resume(FlowExecutionImpl.java:258)
    org.springframework.webflow.executor.FlowExecutorImpl.resumeExecution(FlowExecutorImpl.java:169)
    org.springframework.webflow.mvc.servlet.FlowHandlerAdapter.handle(FlowHandlerAdapter.java:183)
    org.springframework.webflow.mvc.servlet.FlowController.handleRequest(FlowController.java:174)
    org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

1 个答案:

答案 0 :(得分：-1)

您无需提供表单操作。您的表单开头标记应如下所示：

<form:form method="POST" modelAttribute="booking">
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