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首先#xff0c;接口参数校验应该都不陌生#xff0c;大部分应该都会借助javax.validation进行快捷校验#xff0c;一般都是在入参字段上添加NotNull、NotEmpty等#xff0c;对于一些特殊的入参校验逻辑#xff0c;可能不是很适用#xff0c;现在介绍一…前言
首先接口参数校验应该都不陌生大部分应该都会借助javax.validation进行快捷校验一般都是在入参字段上添加NotNull、NotEmpty等对于一些特殊的入参校验逻辑可能不是很适用现在介绍一下自定义注解方式。
依赖 dependencygroupIdorg.hibernate.validator/groupIdartifactIdhibernate-validator/artifactIdversion6.0.10.Final/version/dependency
代码
自定义注解
import javax.validation.Constraint;
import javax.validation.Payload;import java.lang.annotation.*;Target({ElementType.FIELD, ElementType.METHOD, ElementType.ANNOTATION_TYPE})
Retention(RetentionPolicy.RUNTIME)
Documented
Constraint(validatedBy {EnumValidator.class})
public interface EnumValid {String message() default ;Class?[] groups() default {};Class? extends Payload[] payload() default {};/*** 目标枚举类*/Class? extends Enum target() default Enum.class;
}
实际校验类
import com.honor.wpshowdemo.serverone.valid.EnumValid;
import org.apache.commons.lang.StringUtils;import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;public class EnumValidator implements ConstraintValidatorEnumValid, Object {private EnumValid annotation;Overridepublic void initialize(EnumValid constraintAnnotation) {annotation constraintAnnotation;}Overridepublic boolean isValid(Object value, ConstraintValidatorContext constraintValidatorContext) {boolean result false;Class? cls annotation.target();// target为枚举并且value有值才进行校验if (cls.isEnum() (value ! null)) {Object[] objects cls.getEnumConstants();for (Object obj : objects) {//object类型转mapClass? jqlEnum obj.getClass();Field[] fs jqlEnum.getDeclaredFields();MapString, String objMap new HashMap();for (Field f : fs) {f.setAccessible(true);try {objMap.put(f.getName(), f.get(obj).toString());} catch (IllegalArgumentException | IllegalAccessException e) {e.printStackTrace();}}if (objMap.get(code) ! null StringUtils.equals(objMap.get(code), String.valueOf(value))) {result true;break;}}}return result;}
}
测试
测试代码
import lombok.Getter;public enum TestEnum {FAILED(0),SUCCESS(1);Getterprivate Integer id;TestEnum(Integer id) {this.id id;}
}
import lombok.Data;Data
public class TestRequest {EnumValid(target TestEnum.class, message id不符合要求)private Integer id;
}
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;import javax.validation.Valid;RestController
public class TestController {PostMapping(/test)public void test(RequestBody Valid TestRequest testRequest) {}
}
测试结果如下 至此结束欢迎指正。
