与JSF - HIbernate一起使用会导致(javax.validation.ConstraintViolationException)验证失败

Question

我使用的是JSF、Spring和Hibernate。Post模型具有Hibernate注释属性：

@Entity
@Table(name = "posts")
public class Post implements Serializable {

    @Id
    @GeneratedValue(strategy = IDENTITY)
    @Column(name = "id")
    private Long id;

    private int version;

    @Column(name = "title")
    @NotEmpty(message = "Title should not be empty")
    private String title;

    ... getters/setters

}

当我试图在相应的bean中创建一个新的帖子时(忽略语法正确的漂亮面孔)：

@Component
@ManagedBean
@RequestScoped
@URLMappings(mappings = {
        @URLMapping(id = "posts", pattern = "/posts/", viewId = "/faces/posts/list.xhtml"),
        @URLMapping(id = "new", pattern = "/posts/new", viewId = "/faces/posts/new.xhtml")
})
public class PostBean {

    @Autowired
    private PostService postService;

    private List<Post> posts;

    private Post post = new Post();

    public List<Post> getPosts() {
        return postService.findAll();
    }

    public Post getPost() {
        return post;
    }

    public void setPost(Post post) {
        this.post = post;
    }

    public String create(Post post) {
        this.post = postService.save(post);
        return "pretty:posts";
    }
}

PostRepository：

public interface PostRepository extends CrudRepository<Post, Long> {
    public Post findByTitleIgnoreCase(String title);
}

PostServiceImpl：

@Service("postService")
@Repository
@Transactional
public class PostServiceImpl implements PostService {

    @Autowired
    private PostRepository postRepository;

    @Override
    @Transactional(readOnly = true)
    public List<Post> findAll() {
        return Lists.newArrayList(postRepository.findAll());
    }

    @Override
    @Transactional(readOnly = true)
    public Post findById(Long id) {
        return postRepository.findOne(id);
    }

    @Override
    @Transactional(readOnly = true)
    public Post findByTitleIgnoreCase(String title) {
        return postRepository.findByTitleIgnoreCase(title);
    }


    @Override
    @Transactional
    public Post save(Post post) {
        return postRepository.save(post);
    }

    @Override
    public void destroy(Post post) {
        postRepository.delete(post);
    }
}

我得到了javax.validation.ConstraintViolationException。奇怪的是，如果移除Hibernate注释，并将required="true"直接放入JSF页面中，放在标题文本字段旁边，它就可以工作。

<h:inputText id="title" value="#{postBean.post.title}" required="true"/>

有什么想法吗？您可以在my github repo上找到该项目的源代码谢谢。

@NotNull是一个JSR303验证，@NotEmpty -是Hibernate的验证，这是唯一的区别。即使在更改为@NotNull之后，我仍然得到相同的错误。

更新顺便说一下，我删除了@ManagedBean注释，它不再需要了。update-2 @AVolpe:它不会改变任何东西，只需将消息移到标题文本字段的旁边。调用以下命令时出现错误：

public String create(Post post) {
        this.post = postService.save(post);
        return "pretty:posts";
    }

Answer 1

因为JSF的2.2.6版本在BeanValidation上不能很好地工作，所以更新到2.2.7版本或者降级到2.2.4。

请参阅：This answer

Answer 2

已按照AVolpe的建议升级jsf 2.2.7版本修复。