播放框架2.5中的ebean验证

Question

我正在查看他们页面上提供的示例代码：

@Entity
public class Task extends Model {

    @Id
    @Constraints.Min(10)
    public Long id;

    @Constraints.Required
    public String name;

    public boolean done;

    @Formats.DateTime(pattern="dd/MM/yyyy")
    public Date dueDate = new Date();

    public static Finder<Long, Task> find = new Finder<Long,Task>(Task.class);
}

@Constraints.Min(10) 似乎不起作用。当我尝试使用约束开发我的模型时，它没有在保存时触发验证。示例代码：

@Entity
public class Company extends Model{

    private static final long serialVersionUID = 1L;

    @Id
    public Long id;

    @Column(columnDefinition = "varchar(100)", nullable false)
    @Constraints.Required
    @Formats.NonEmpty
    @Constraints.MinLength(10)
    @Constraints.MaxLength(10)
    public String name;

}

我尝试运行这段代码：

Company company = new Company();

company.name="";
company.save()

虽然名称是空字符串，但它会将数据保存到数据库中。

Answer 1

约束用于表单绑定验证，而不是直接字段设置。

private static final Form<Company> companyForm = formFactory.form(Company.class);

所以在渲染视图的控制器方法中。

Form<Company> filledForm = companyForm.fill(company);
view.render(filledForm);

在处理表单回发到服务器的控制器方法中。

Form<Company> boundForm = companyForm.bindFromRequest();
if (boundForm.hasErrors()) {
    // This will happen if there is validation errors, you can also add a validate method to Company for more complex validation
    return badRequest(views.html.form.render(boundForm));
} else {
    Company company = boundForm.get();
    return ok("Got company " + company);
}