Question

出于某种原因，我收到以下错误消息：

Developer Notification (set struts.devMode to false to disable this message): Unexpected Exception caught setting 'claimForm.payableEvents[1].totalHours' on 'class com.somedomain.application.action.claimreimbursement.ProcessSaveClaimFormAction: Error setting expression 'claimForm.payableEvents[1].totalHours' with value '[Ljava.lang.String;@54f242c1'
Developer Notification (set struts.devMode to false to disable this message): Unexpected Exception caught setting 'claimForm.payableEvents[2].totalHours' on 'class com.somedomain.application.action.claimreimbursement.ProcessSaveClaimFormAction: Error setting expression 'claimForm.payableEvents[2].totalHours' with value '[Ljava.lang.String;@1ff32b5d' 
Developer Notification (set struts.devMode to false to disable this message): Unexpected Exception caught setting 'claimForm.payableEvents[1].totalHours' on 'class com.somedomain.application.action.claimreimbursement.ProcessSaveClaimFormAction: Error setting expression 'claimForm.payableEvents[1].totalHours' with value '[Ljava.lang.String;@54f242c1'
Developer Notification (set struts.devMode to false to disable this message): Unexpected Exception caught setting 'claimForm.payableEvents[2].totalHours' on 'class com.somedomain.application.action.claimreimbursement.ProcessSaveClaimFormAction: Error setting expression 'claimForm.payableEvents[2].totalHours' with value '[Ljava.lang.String;@1ff32b5d'

根据关于缺失参数的警告标题下Parameters Interceptor的文章，我的理解是参数的设定者存在问题。

我已经回去检查了，我确实有一个为参数命名的setter。

以下是我的java类的精简版：

public class ClaimWizardPayableEventAjaxAction{
    private ClaimForm claimForm;

    public void setClaimForm(ClaimForm claimForm) {
      this.claimForm = claimForm;
    }
}


public class ClaimForm{
  private List<PayableEvent> payableEvents;

  public void setPayableEvents(List<PayableEvent> payableEvents) {
    this.payableEvents = payableEvents;
  }
}

public class PayableEvent{
  private BigDecimal totalHours;

  public void setTotalHours(BigDecimal totalHours) {
    this.totalHours = totalHours;
  }
}

我的jsp使用c：forEach：

<input type="text" class="input-small" name="claimForm.payableEvents[${i.index}].totalHours" />

至于我试过的是什么？我看了我的拼写，没有看到任何不一致的地方。我已经检查过它确实保存了价值。这是否与它被投射到一个大BigDecimal？

有关

Answer 1

这是由于类型转换，因为您没有使用Struts标记，该值将转换为字符串并返回BigInteger。如果您不想收到此类警告，可以关闭struts.devMode。

设置表达式出错

1 个答案: