我刚开始使用 spring MVC 并且无法在验证失败时显示正确的错误消息。
控制器是：
@RequestMapping(value = "/MobiusDashboardWebsiteContent/csiBatchSubmission", method = RequestMethod.POST)
@LogAction(actionPerformed = "submitCSIBatch")
public String submitCSIBatch(ManualCSIBatch manualCSIBatch, BindingResult result, Model model, MobiusAuthenticationToken authToken) throws Throwable {
ManualCSIBatch mBatch = new ManualCSIBatch();
manualCSIBatch.setBatchUser(getUserName(authToken));
csiBatchValidator.validate(manualCSIBatch, result);
if (result.hasErrors()) {
LOG.error("Validation errors found for the batch " + manualCSIBatch.getBatchName() + " error code is " + manualCSIBatch.getErrorCode());
model.addAttribute("localeList", localeList);
model.addAttribute("evaluateAttributeList", evaluateAttibutes);
model.addAttribute("csiBatchSubmission", manualCSIBatch);
return "csiBatchSubmission";
}
mBatch.setErrorCode(StatusCode.SUCESS.getCode());
model.addAttribute("csiBatchSubmission", mBatch);
return "csiBatchSubmission";
}
验证器是：
@Override
public void validate(Object target, Errors errors) {
ManualCSIBatch manualCSIBatch = (ManualCSIBatch) target;
boolean isDuplicate = getiMobiusService().checkDuplicateCSIBatchName(manualCSIBatch.getBatchName(), manualCSIBatch.getBatchUser());
if (isDuplicate) {
logger.debug("This is a duplicate batch " + manualCSIBatch.getBatchName() + " for this user " + manualCSIBatch.getBatchUser());
errors.rejectValue("batchName", "errors.csi.duplicateBatch", new Object[] { manualCSIBatch.getBatchName() }, null);
}
当验证失败时，一切正常，表单不提交，但错误值未在 UI 上填充。
JSP 是这样的：
<div class="row">
<label for="batch-name"><spring:message code="csi.label.batchname"/></label><form:input path="batchName" onkeyup="checkDuplciateBatch(this.value);" onblur="checkDuplciateBatch(this.value);"/>
<span id="availmsg" style="display:none"></span>
<form:errors path="batchName" cssClass="error"/>
</div>
在我看到的所有例子中，这就是方式。这里可能有什么问题？
谢谢，