同一虚拟主机 2个网站,如果网站设计时,南京医疗网站建设,邳州建设银行招聘网站一、前言 在实际开发项目中#xff0c;我们常常需要对接口入参进行校验#xff0c;如果直接在业务代码中进行校验#xff0c;则会显得代码非常冗余#xff0c;也不够优雅#xff0c;那么我们可以使用aop的方式校验#xff0c;这样则会显得更优雅。
二、如何实现#xf…一、前言 在实际开发项目中我们常常需要对接口入参进行校验如果直接在业务代码中进行校验则会显得代码非常冗余也不够优雅那么我们可以使用aop的方式校验这样则会显得更优雅。
二、如何实现 1.添加maven依赖
dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-validation/artifactId
/dependency2.定义一个工具类ValidationUtil
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;import javax.servlet.http.HttpServletRequest;
import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;public class ValidationUtil {private static ValidationUtil util;private Validator validator;public ValidationUtil() {// TODO Auto-generated constructor stubValidatorFactory factory Validation.buildDefaultValidatorFactory();this.validator factory.getValidator();}
/*** return the validator*/public Validator getValidator() {return validator;}public static ValidationUtil getValidationUtil() {if (util null) {util new ValidationUtil();}return util;}public static ListCheckErrorResultDto validate(Object o) {SetConstraintViolationObject set ValidationUtil.getValidationUtil().getValidator().validate(o);ListCheckErrorResultDto errorList null;HttpServletRequest request ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();for (ConstraintViolationObject cv : set) {if (errorList null) {errorList new ArrayListCheckErrorResultDto();}String message MessageResolver.getMessage(request,cv.getMessage());errorList.add(new CheckErrorResultDto(cv.getPropertyPath().toString(), message));}return errorList;}public static ListCheckErrorResultDto validate(Object o,Class? ...c) {SetConstraintViolationObject set ValidationUtil.getValidationUtil().getValidator().validate(o,c);ListCheckErrorResultDto errorList null;HttpServletRequest request ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();for (ConstraintViolationObject cv : set) {if (errorList null) {errorList new ArrayListCheckErrorResultDto();}String message MessageResolver.getMessage(request,cv.getMessage());errorList.add(new CheckErrorResultDto(cv.getPropertyPath().toString(), message));}return errorList;}3.校验错误信息实体类。
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;Data
Builder
AllArgsConstructor
NoArgsConstructor
public class CheckErrorResultDto {private String fieldName;private String msg;
}4.编写校验AOP
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
Order(1)
Aspect
Component
EnableAspectJAutoProxy(exposeProxytrue)
public class ValidAop {/*** 校验传入实体** param pjp* throws Throwable*/Around(annotation(com.dp.aop.annotation.Valid))public Object aroundExec(ProceedingJoinPoint pjp) throws Throwable {MethodSignature ms (MethodSignature) pjp.getSignature();Method method ms.getMethod();Valid annotation method.getAnnotation(Valid.class);if (annotation ! null) {ListCheckErrorResultDto errorListnew ArrayListCheckErrorResultDto();Object[] argspjp.getArgs();Class?[] checkToken annotation.value();Class?[] group annotation.group();for (Class c : checkToken) {for (Object obj : args) {if (c obj.getClass()) {ListCheckErrorResultDto resultnull;if(group.length1){result ValidationUtil.validate(obj);}else{result ValidationUtil.validate(obj,group);}if(result!null)errorList.addAll(result);}}}if(errorList.size()0){ResponseData vonew ResponseData();vo.setCode(ApiCodeEnum.ILLEGAL_PARAMETER.getCode());vo.setMsg(ApiCodeEnum.ILLEGAL_PARAMETER.getMsg());vo.setData(errorList);return vo;}}return pjp.proceed();}
}5.定义一个校验注解Valid
import java.lang.annotation.*;Target(ElementType.METHOD)
Retention(RetentionPolicy.RUNTIME)
Documented
public interface Valid {Class?[] value() default {};Class?[] group() default {};
}6.最后在Controller定义的接口上加上注解指定要校验的对象即可。
大家可以尝试下。
