@Validated
,并对Bean对象的参数做不同的注解处理就行,对Spring这种常用做法大家应该比较熟了 <!--jsr 303-->
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>1.1.0.Final</version>
</dependency>
@PostMapping("/save/valid")
public RspDTO save(@RequestBody @Validated UserDTO userDTO) {
userService.save(userDTO);
return RspDTO.success();
}
@Data
public class UserDTO implements Serializable {
private static final long serialVersionUID = 1L;
/*** 用户ID*/
@NotNull(message = "用户id不能为空")
private Long userId;
/** 用户名*/
@NotBlank(message = "用户名不能为空")
@Length(max = 20, message = "用户名不能超过20个字符")
@Pattern(regexp = "^[\\u4E00-\\u9FA5A-Za-z0-9\\*]*$", message = "用户昵称限制:最多20字符,包含文字、字母和数字")
private String username;
/** 手机号*/
@NotBlank(message = "手机号不能为空")
@Pattern(regexp = "^[1][3,4,5,6,7,8,9][0-9]{9}$", message = "手机号格式有误")
private String mobile;
/**性别*/
private String sex;
/** 邮箱*/
@NotBlank(message = "联系邮箱不能为空")
@Email(message = "邮箱格式不对")
private String email;
/** 密码*/
private String password;
/*** 创建时间 */
@Future(message = "时间必须是将来时间")
private Date createTime;
}
import org.springframework.validation.annotation.Validated;
import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;
import java.util.Date;
import java.util.Set;
import java.util.stream.Stream;
/**
* @author laoliangliang
* @date 2019/10/22 15:19
*/
public class ValidLearn {
public static void main(String[] args) {
ValidLearn learn = new ValidLearn();
learn.testValid(new Order().setIdcard("33062119981012361X").setName(" ").setCreateDate(new Date()));
}
public void testValid(@Validated Order order) {
ValidatorFactory validatorFactory = Validation.buildDefaultValidatorFactory();
Validator validator = validatorFactory.getValidator();
//分组Insert.class则id为空不检验
Set<ConstraintViolation<Order>> validate = validator.validate(order, Insert.class);
Stream.of(validate).forEach(action -> {
for (ConstraintViolation<Order> orderConstraintViolation : action) {
String message = orderConstraintViolation.getMessage();
System.out.println(message);
}
});
}
}
/**
* @author laoliangliang
* @date 2019/10/21 16:44
*/
@Data
@Accessors(chain = true)
public class Order {
@NotNull(message = "id不能为空",groups = Update.class)
private Long id;
@NotEmpty(message = "name is not null",groups = Insert.class)
private String name;
@Future(message = "必须之后的时间")
private Date createDate;
@IdCardValid(message = "idcard 不合法")
private String idcard;
}
import javax.validation.groups.Default;
/**
* @author laoliangliang
* @date 2019/10/22 16:32
*/
public interface Update extends Default {
}
import javax.validation.groups.Default;
/**
* @author laoliangliang
* @date 2019/10/22 16:32
*/
public interface Insert extends Default {
}
Insert.class
,表示做插入动作时,存在这个分组的注解才会起作用,因此我id不传,id不为空的注解也不会起作用import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* @author laoliangliang
* @date 2019/10/22 15:55
*/
public class IdCardValidator implements ConstraintValidator<IdCardValid, Object> {
private Pattern pattern = Pattern.compile("^[1-9]\\d{7}((0\\d)|(1[0-2]))(([0|1|2]\\d)|3[0-1])" +
"\\d{3}$|^[1-9]\\d{5}[1-9]\\d{3}((0\\d)|(1[0-2]))(([0|1|2]\\d)|3[0-1])\\d{3}([0-9]|X)$");
@Override
public void initialize(IdCardValid idCardValid) {
}
@Override
public boolean isValid(Object o, ConstraintValidatorContext constraintValidatorContext) {
Matcher matcher = pattern.matcher(o.toString());
return matcher.matches();
}
}
/**
* @author laoliangliang
* @date 2019/10/22 15:53
*/
@Documented
@Target({ElementType.PARAMETER,ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = IdCardValidator.class)
public @interface IdCardValid {
String message() default "身份证不合法";
Class<?>[] groups() default {};
Class<? extends Payload>[] payload() default {};
}
ConstraintValidator
接口,在isValid
方法中实现自定义逻辑即可使用注解Validation
用Java代码实现验证的例子,应对service层参数验证,实际应用到自己代码可以自己写个自定义注解,实现aop切面,在切面中进行验证欢迎关注公众号,一起学习进步