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https://blog.zysicyj.top/
一、申请组
1. 人组
package org.hibernate.validator.referenceguide.chapter05;
public class Person {
@NotNull
private String name;
public Person(String name) {this.name = name;}
// getters and setters ...
}
2. 驱动组
public class Driver extends Person {
@Min(
value = 18,
message = "You have to be 18 to drive a car",
groups = DriverChecks.class
)
public int age;
@AssertTrue(
message = "You first have to pass the driving test",
groups = DriverChecks.class
)
public boolean hasDrivingLicense;
public Driver(String name) {super( name);
}
public void passedDrivingTest(boolean b) {hasDrivingLicense = b;}
public int getAge() {return age;}
public void setAge(int age) {this.age = age;}
}
3. 汽车组
public class Car {
@NotNull
private String manufacturer;
@NotNull
@Size(min = 2, max = 14)
private String licensePlate;
@Min(2)
private int seatCount;
@AssertTrue(
message = "The car has to pass the vehicle inspection first",
groups = CarChecks.class
)
private boolean passedVehicleInspection;
@Valid
private Driver driver;
public Car(String manufacturer, String licencePlate, int seatCount) {
this.manufacturer = manufacturer;
this.licensePlate = licencePlate;
this.seatCount = seatCount;
}
public boolean isPassedVehicleInspection() {return passedVehicleInspection;}
public void setPassedVehicleInspection(boolean passedVehicleInspection) {this.passedVehicleInspection = passedVehicleInspection;}
public Driver getDriver() {return driver;}
public void setDriver(Driver driver) {this.driver = driver;}
// getters and setters ...
}
4. 应用验证组
// create a car and check that everything is ok with it.
Car car = new Car("Morris", "DD-AB-123", 2);
Set<ConstraintViolation<Car>> constraintViolations = validator.validate(car);
assertEquals(0, constraintViolations.size() );
// but has it passed the vehicle inspection?
constraintViolations = validator.validate(car, CarChecks.class);
assertEquals(1, constraintViolations.size() );
assertEquals(
"The car has to pass the vehicle inspection first",
constraintViolations.iterator().next().getMessage());
// let's go to the vehicle inspection
car.setPassedVehicleInspection(true);
assertEquals(0, validator.validate( car, CarChecks.class).size());
// now let's add a driver. He is 18, but has not passed the driving test yet
Driver john = new Driver("John Doe");
john.setAge(18);
car.setDriver(john);
constraintViolations = validator.validate(car, DriverChecks.class);
assertEquals(1, constraintViolations.size() );
assertEquals(
"You first have to pass the driving test",
constraintViolations.iterator().next().getMessage());
// ok, John passes the test
john.passedDrivingTest(true);
assertEquals(0, validator.validate( car, DriverChecks.class).size());
// just checking that everything is in order now
assertEquals(
0, validator.validate(
car,
Default.class,
CarChecks.class,
DriverChecks.class
).size());
二、组继承 (🐮)
- 定义一个超级跑车
public class SuperCar extends Car {
@AssertTrue(
message = "Race car must have a safety belt",
groups = RaceCarChecks.class
)
private boolean safetyBelt;
// getters and setters ...
}
import javax.validation.groups.Default;
public interface RaceCarChecks extends Default {}
- 应用组继承
// create a supercar and check that it's valid as a generic Car
SuperCar superCar = new SuperCar("Morris", "DD-AB-123", 1);
assertEquals("must be greater than or equal to 2", validator.validate( superCar).iterator().next().getMessage());
// check that this supercar is valid as generic car and also as race car
Set<ConstraintViolation<SuperCar>> constraintViolations = validator.validate(superCar, RaceCarChecks.class);
assertThat(constraintViolations).extracting("message").containsOnly(
"Race car must have a safety belt",
"must be greater than or equal to 2"
);
三、定义组序列(🐮)
- 定义序列组
import javax.validation.GroupSequence;
import javax.validation.groups.Default;
@GroupSequence({Default.class, CarChecks.class, DriverChecks.class})
public interface OrderedChecks {}
- 应用序列组
Car car = new Car("Morris", "DD-AB-123", 2);
car.setPassedVehicleInspection(true);
Driver john = new Driver("John Doe");
john.setAge(18);
john.passedDrivingTest(true);
car.setDriver(john);
assertEquals(0, validator.validate( car, OrderedChecks.class).size());
四、从新定义默认的组程序
@GroupSequence
- 定义一个具备重定义的默认组的类
@GroupSequence({RentalChecks.class, CarChecks.class, RentalCar.class})
public class RentalCar extends Car {@AssertFalse(message = "The car is currently rented out", groups = RentalChecks.class)
private boolean rented;
public RentalCar(String manufacturer, String licencePlate, int seatCount) {super( manufacturer, licencePlate, seatCount);
}
public boolean isRented() {return rented;}
public void setRented(boolean rented) {this.rented = rented;}
}
public interface RentalChecks {}
- 应用从新定义的默认组
RentalCar rentalCar = new RentalCar("Morris", "DD-AB-123", 2);
rentalCar.setPassedVehicleInspection(true);
rentalCar.setRented(true);
Set<ConstraintViolation<RentalCar>> constraintViolations = validator.validate(rentalCar);
assertEquals(1, constraintViolations.size() );
assertEquals(
"Wrong message",
"The car is currently rented out",
constraintViolations.iterator().next().getMessage());
rentalCar.setRented(false);
constraintViolations = validator.validate(rentalCar);
assertEquals(0, constraintViolations.size() );
@GroupSequenceProvider
- 实现和应用默认组序列
public class RentalCarGroupSequenceProvider
implements DefaultGroupSequenceProvider<RentalCar> {
@Override
public List<Class<?>> getValidationGroups(RentalCar car) {List<Class<?>> defaultGroupSequence = new ArrayList<Class<?>>();
defaultGroupSequence.add(RentalCar.class);
if (car != null && !car.isRented() ) {defaultGroupSequence.add( CarChecks.class);
}
return defaultGroupSequence;
}
}
@GroupSequenceProvider(RentalCarGroupSequenceProvider.class)
public class RentalCar extends Car {@AssertFalse(message = "The car is currently rented out", groups = RentalChecks.class)
private boolean rented;
public RentalCar(String manufacturer, String licencePlate, int seatCount) {super( manufacturer, licencePlate, seatCount);
}
public boolean isRented() {return rented;}
public void setRented(boolean rented) {this.rented = rented;}
}
五、组转换(🐮)
- 必须汇合 @Valid 哦,否则报错
public class Driver {
@NotNull
private String name;
@Min(
value = 18,
message = "You have to be 18 to drive a car",
groups = DriverChecks.class
)
public int age;
@AssertTrue(
message = "You first have to pass the driving test",
groups = DriverChecks.class
)
public boolean hasDrivingLicense;
public Driver(String name) {this.name = name;}
public void passedDrivingTest(boolean b) {hasDrivingLicense = b;}
public int getAge() {return age;}
public void setAge(int age) {this.age = age;}
// getters and setters ...
}
@GroupSequence({CarChecks.class, Car.class})
public class Car {
@NotNull
private String manufacturer;
@NotNull
@Size(min = 2, max = 14)
private String licensePlate;
@Min(2)
private int seatCount;
@AssertTrue(
message = "The car has to pass the vehicle inspection first",
groups = CarChecks.class
)
private boolean passedVehicleInspection;
@Valid
@ConvertGroup(from = Default.class, to = DriverChecks.class)
private Driver driver;
public Car(String manufacturer, String licencePlate, int seatCount) {
this.manufacturer = manufacturer;
this.licensePlate = licencePlate;
this.seatCount = seatCount;
}
public boolean isPassedVehicleInspection() {return passedVehicleInspection;}
public void setPassedVehicleInspection(boolean passedVehicleInspection) {this.passedVehicleInspection = passedVehicleInspection;}
public Driver getDriver() {return driver;}
public void setDriver(Driver driver) {this.driver = driver;}
// getters and setters ...
}
// create a car and validate. The Driver is still null and does not get validated
Car car = new Car("VW", "USD-123", 4);
car.setPassedVehicleInspection(true);
Set<ConstraintViolation<Car>> constraintViolations = validator.validate(car);
assertEquals(0, constraintViolations.size() );
// create a driver who has not passed the driving test
Driver john = new Driver("John Doe");
john.setAge(18);
// now let's add a driver to the car
car.setDriver(john);
constraintViolations = validator.validate(car);
assertEquals(1, constraintViolations.size() );
assertEquals(
"The driver constraint should also be validated as part of the default group",
constraintViolations.iterator().next().getMessage(),
"You first have to pass the driving test"
);
);
正文完