在胸腺中有没有办法在bean的对象属性中验证属性?认为我们确实有一个部门课程:
public class Departement {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private Long idDept;
@NotEmpty
private String name;
}
和另一个员工类如下
public class Employee{
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private Long idEmp;
@NotEmpty
@Size(min = 5, message="At least five characters needed")
private String employeeName;
@NotNull
private Departement departement;
}
使用上面的代码使用雇员表格中的百里叶"雇员",将通过春季验证,因为注释。让我们在这里看看在我的控制器
中@GetMapping( value = "/emp" )
public String save(Model model){
Employee emp = new Employee();
emp.setDepartement(new Departement());
model.addAttribute('employee', emp);
return 'view';
}
//------------- Form in PostMapping
@PostMapping( value = "/save", @Valid Emp emp, BindingResult bindingResult )
public String savePost(Model model){
if( ! bindingResult.hasErrors() )
{
/* Even if departement has not been choosen, my code always goes here
and print "Form Ok. Departement : 0" instead of reaching the 'else' block, but if departement choosen,
it prints the correct value of departemnt
*/
System.out.println( "Form Ok.n Departement : " + emp.getDepartement().getIdDept() );
}else{
System.out.println( "Missing attributes." );
}
return 'view';
}
,这是员工表格
<form th:action="@{save}" th:object="${emp}" th:method="POST" >
<span th:if="${#fields.hasErrors('employeeName') }"th:errors="*{employeeName}"></span>
<input th:field="*{employeeName}" th:value="${employeeName}" />
//--------
<div th:object="${emp.departement}">
<span th:if="${#fields.hasErrors('idDept') }"th:errors="*{idDept}"></span>
<input th:field="*{idDept}" th:value="${idDept}" />
</div>
</form>
**这是我的问题:如何在不使用emplpoyee表格中使用Javacript的情况下验证员工部门标识符(IDDEPT字段(?**
nb:我不使用drowpdownlist来显示部门,而是喜欢自动完成字段和一个隐藏的字段,该字段将选中选择的部门ID。
JSR-303要求使用@Valid
注释来递归验证嵌套组件,如Hibernate验证器文档中所述。
因此,只要将@Valid
放在您的嵌套组件上,就您的部门字段而言,在员工类中:
public class Employee {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private Long idEmp;
@NotEmpty
@Size(min = 5, message="At least five characters needed")
private String employeeName;
@NotNull
@Valid
private Departement departement;
}