- 除了通过 @GroupSequence 静态地重新定义默认组序列之外，Hibernate Validator还提供了一个注解，用于根据对象状态动态地重新定义默认组序列。
- 为了实现动态地实现校验，需要实现接口 DefaultGroupSequenceProvider，并通过 @GroupSequenceProvider 注释将该实现注册到目标类。
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参数 |
描述 |
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value |
继承了 DefaultGroupSequenceProvider 的类 |
示例
- CustomGroupForm.java
@GroupSequenceProvider(value = CustomSequenceProvider.class)
public class CustomGroupForm {
@Pattern(regexp = "[A|B]" , message = "类型不必须为 A|B")
private String type;
@NotEmpty(message = "参数A不能为空" , groups = {WhenTypeIsA.class})
private String paramA;
@NotEmpty(message = "参数B不能为空", groups = {WhenTypeIsB.class})
private String paramB;
// standard constructors / setters / getters / toString
public interface WhenTypeIsA { }
public interface WhenTypeIsB { }
}
- CustomSequenceProvider
public class CustomSequenceProvider implements DefaultGroupSequenceProvider<CustomGroupForm> {
@Override
public List<Class<?>> getValidationGroups(CustomGroupForm form) {
List<Class<?>> defaultGroupSequence = new ArrayList<>();
defaultGroupSequence.add(CustomGroupForm.class);
if (form != null && "A".equals(form.getType())) {
defaultGroupSequence.add(CustomGroupForm.WhenTypeIsA.class);
}
if (form != null && "B".equals(form.getType())) {
defaultGroupSequence.add(CustomGroupForm.WhenTypeIsB.class);
}
return defaultGroupSequence;
}
}
- MainController.java
@Controller
Public class MainController(){
@PostMapping("/customGroup")
public ResultVo customGroup(@RequestBody @Validated
CustomGroupForm form){
return
ResultVoUtil.success(form);
}
}