- 需要自定义注解 , 且指定校验class , 且具备valid注解必备的成员属性与方法
package com.imooc.demo.invalid;
import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Target({ElementType.METHOD,ElementType.FIELD})
@Retention(value = RetentionPolicy.RUNTIME)
@Constraint(validatedBy=ConstraintImpl.class)
public @interface Myconstraint {
/**
* 这三个方法是必须要有的
*/
String message();
Class<?>[] groups() default { };
Class<? extends Payload>[] payload() default { }
}
- 编写valid指定的接口,并实现
package com.imooc.demo.invalid
import com.imooc.demo.service.UserService
import org.springframework.beans.factory.annotation.Autowired
import javax.validation.ConstraintValidator
import javax.validation.ConstraintValidatorContext
public class ConstraintImpl implements ConstraintValidator<Myconstraint,Object>{
@Autowired
private UserService userService
@Override
public void initialize(Myconstraint constraintAnnotation) {
System.out.println("校验初始化...")
}
@Override
public boolean isValid(Object value, ConstraintValidatorContext context) {
System.out.println(userService.hello())
return true
}
}
- 自定义注解使用
package com.imooc.demo.security;
import com.fasterxml.jackson.annotation.JsonView;
import com.imooc.demo.invalid.Myconstraint;
public class User {
@Myconstraint(message = "哈哈哈")
private String username;
private int age;
private String password;
public interface SimpleUserInterface{}
public interface DetailUserIntereface extends SimpleUserInterface{}
@JsonView(value = DetailUserIntereface.class)
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public void setUsername(String username) {
this.username = username;
}
public void setAge(int age) {
this.age = age;
}
@JsonView(value = SimpleUserInterface.class)
public String getUsername() {
return username;
}
public int getAge() {
return age;
}
}