我有Spring Boot应用程序,无法向用户显示错误消息。没有该数据的对象不会保存在数据库中,那就可以了。但是显示错误消息是问题所在。当我调试时我得到错误大小= 0
这是我的模型:
@Size(min = 1, message = "Address is invalid.")
@NotNull
@Column
private String address;
控制者
@RequestMapping(value = "/create", method = RequestMethod.POST,
consumes = MediaType.APPLICATION_FORM_URLENCODED_VALUE)
public String createNewBusiness(@Valid @ModelAttribute("business")
Business business, BindingResult result, Model model) {
model.addAttribute("userEmail", getUserEmail());
logger.info("/business/create:" + business.toString());
LocationResponse locationResponse = geoService.getCoords(business.getAddress());
if(locationResponse.getStatus().equals("OK")) {
business.setLatitude(locationResponse.getResults().get(0).getGeometry().getLocation().getLat());
business.setLongitude(locationResponse.getResults().get(0).getGeometry().getLocation().getLng());
business.setUserId(getUserId());
businessService.createNew(business);
model.addAttribute("business", business);
}else{
business.setAddress(null);
model.addAttribute("business", business);
}
if(result.hasErrors()){
List<FieldError> errors = result.getFieldErrors();
for (FieldError error : errors ) {
System.out.println (error.getObjectName() + " - " + error.getDefaultMessage());
}
return "newBusiness";
}
return "business";
}
和胸腺
<div class="input-field left m-0 w-100">
<i class="fa fa-map-marker prefix grey-text" aria-hidden="true"></i>
<input placeholder="Address" id="inputAddress" name="address" type="text" class="validate my-0" th:required="true">
<label th:errors="*{address}" th:if="${#fields.hasErrors('address')}" >Invalid address </label>
</div>
如果要引发自定义验证错误(例如,如果要通过模型中的注释验证器以外的其他方式验证字段),则可以通过BindingResult#rejectValue()
方法来实现。例如:
if (business.getEmail() == null || business.getEmail().length() == 0) {
result.rejectValue("email", "email.missing", "Must enter email");
}
显然,电子邮件字段只是一个示例,因为您将需要百里香叶资源上的该电子邮件字段以及错误字段。
有关此主题的更多信息,请访问https://docs.spring.io/autorepo/docs/spring-framework/3.2.8.RELEASE/javadoc-api/org/springframework/validation/Errors.html#rejectValue(java.lang.String ,%20java.lang.String,%20java.lang.Object [],%20java.lang.String)
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