Thymeleaf Spring boot - input Localdate

Question

I'm writing a program in Spring boot and my database is postgre. i have a problem with thymeleaf. I try to input a localdate value but the value remain null. i dont have any problem with another values like String and int.

This is my Localdate value:

@DateTimeFormat(pattern="yyyy-MM-dd")
private LocalDate einkaufsdatum;

and this is my thymeleafs code:

<form action="#" th:action="@{/addmaterial}" th:object="${material}" method="post">
    <p>Einkaufsdatum: <input type="date" th:value="*{einkaufsdatum}"  />
</form>

and this is my controller:

@RequestMapping(value="addmaterial", method=RequestMethod.POST)
public String addSpeichern(@ModelAttribute Material material) {

//      System.out.println(material.getEinkaufsdatum()); for testing: print null value!
        materialRepository.save(material);
        return "materialverwaltung"; 
}

Answer 1

I found the problem: instead of:

<p>Einkaufsdatum: <input type="date" th:value="*{einkaufsdatum}"  />

i used this:

<p>Einkaufsdatum: <input type="date" th:field="*{einkaufsdatum}" />

Answer 2

Instead of:

@DateTimeFormat(pattern="yyyy-MM-dd")
private LocalDate einkaufsdatum;

Try this:

@DateTimeFormat(pattern="yyyy-MM-dd")
private LocalDate einkaufsdatum = LocalDate.now();