Spring MVC Form Validation Date Field

Question

I have a form field that needs to be converted to a Date object, as follows:

<form:input path="date" />

And I have a requirement to do validation as follows:

• If the user leaves this field blank. I need to set a default date.

• If the user participated in an unacceptable format, I need to report an error.

The problem is that I can satisfy either the 1st or 2nd requirement.

• I can register a PropertyEditor , and in case the date is invalid, set it to null, and if this null field set some date by default. But with this approach, I can’t fulfill the second requirement, because if I convert it to null, I will not be able to register the 2nd error for the user.
• I can set the annotation @DateTimeFormat (pattern = "dd-MMM-yyyy") and provide a corresponding error like Mismatch, but it still returns this error when the user leaves an empty value in this field.

Is there any good solution to such a problem?

Answer 1

, MVC Spring Hibernate. , Hibernate Spring Validator ( intreface SmartValidator, ).

@NotNull
.

NotNull.[formName].[dateField]= , typeMismatch.[formName].[dateField]= , Spring ( )

CustomDateEditor.

.

Answer 2

, . , . @DateTimeFormat(pattern="dd-MMM-yyyy"), , , .

, IMHO GET @DateTimeFormat(pattern="dd-MMM-yyyy").

, @ModelAttribute, . DateTimeFormat(pattern="dd/MM/yyyy"). Spring (3.2.4) , null. , @DateTimeFormat(pattern="dd-MMM-yyyy") .