Spring validation

Controller.java

    @RequestMapping("/saveBoard")
    public String saveBoard(@ModelAttribute @Valid Board board, BindingResult binding) {

        if (binding.hasErrors()) {
            return "boardInputForm";
        }
        Integer seq = service.save(board);
        return "redirect:boardDetail/" + seq;
    }

    @InitBinder
    protected void initBinder(WebDataBinder binder) {
        binder.setValidator(new BoardValidator());
    }

pom.xml

		<dependency>
			<groupId>javax.validation</groupId>
			<artifactId>validation-api</artifactId>
			<version>1.0.0.GA</version>
		</dependency>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-validator-annotation-processor</artifactId>
			<version>4.1.0.Final</version>
		</dependency>

thymeleaf.html

<div class="alert alert-error" th:if="${#fields.hasErrors('title')}" th:text="${#fields.errors('title')}">
		title is empty 
</div>