/*
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Copyright [2020] [https://www.xiaonuo.vip]
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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Snowy采用APACHE LICENSE 2.0开源协议，您在使用过程中，需要注意以下几点：
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1.请不要删除和修改根目录下的LICENSE文件。
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2.请不要删除和修改Snowy源码头部的版权声明。
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3.请保留源码和相关描述文件的项目出处，作者声明等。
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4.分发源码时候，请注明软件出处 https://gitee.com/xiaonuobase/snowy
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5.在修改包名，模块名称，项目代码等时，请注明软件出处 https://gitee.com/xiaonuobase/snowy
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6.若您的项目无法满足以上几点，可申请商业授权，获取Snowy商业授权许可，请在官网购买授权，地址为 https://www.xiaonuo.vip
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*/
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package vip.xiaonuo.sys.core.aop;
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import cn.hutool.core.bean.BeanUtil;
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import cn.hutool.core.util.ArrayUtil;
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import cn.hutool.core.util.ObjectUtil;
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import cn.hutool.log.Log;
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import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
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import org.aspectj.lang.ProceedingJoinPoint;
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import org.aspectj.lang.annotation.Around;
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import org.aspectj.lang.annotation.Aspect;
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import org.aspectj.lang.annotation.Pointcut;
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import org.aspectj.lang.reflect.MethodSignature;
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import org.springframework.core.annotation.Order;
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import vip.xiaonuo.core.annotion.Wrapper;
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import vip.xiaonuo.core.consts.AopSortConstant;
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import vip.xiaonuo.core.exception.ServiceException;
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import vip.xiaonuo.core.exception.enums.WrapperExceptionEnum;
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import vip.xiaonuo.core.pojo.base.wrapper.BaseWrapper;
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import vip.xiaonuo.core.pojo.page.PageResult;
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import vip.xiaonuo.core.pojo.response.ResponseData;
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import java.lang.reflect.Array;
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import java.lang.reflect.Method;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Map;
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/**
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* controller结果包装的aop
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*
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* @author xuyuxiang
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* @date 2020/7/24 17:42
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*/
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@Aspect
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@Order(AopSortConstant.WRAPPER_AOP)
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public class WrapperAop {
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private static final Log log = Log.get();
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/**
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* 切入点
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*
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* @author xuyuxiang
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* @date 2020/7/24 17:42
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*/
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@Pointcut("@annotation(vip.xiaonuo.core.annotion.Wrapper)")
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private void wrapperPointcut() {
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}
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/**
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* 执行具体的包装过程
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*
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* @author xuyuxiang
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* @date 2020/7/24 17:44
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*/
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@Around("wrapperPointcut()")
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public Object doWrapper(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
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// 直接执行原有业务逻辑
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Object proceedResult = proceedingJoinPoint.proceed();
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return processWrapping(proceedingJoinPoint, proceedResult);
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}
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/**
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* 具体包装过程
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*
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* @author xuyuxiang
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* @date 2020/7/24 17:53
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*/
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@SuppressWarnings("all")
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private Object processWrapping(ProceedingJoinPoint proceedingJoinPoint, Object originResult) throws IllegalAccessException, InstantiationException {
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// 获取@Wrapper注解
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MethodSignature methodSignature = (MethodSignature) proceedingJoinPoint.getSignature();
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Method method = methodSignature.getMethod();
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Wrapper wrapperAnnotation = method.getAnnotation(Wrapper.class);
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// 获取注解上的处理类
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Class<? extends BaseWrapper<?>>[] baseWrapperClasses = wrapperAnnotation.value();
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// 如果注解上的为空直接返回
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if (ObjectUtil.isEmpty(baseWrapperClasses)) {
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return originResult;
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}
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// 获取原有返回结果，如果不是ResponseData则不进行处理(需要遵守这个约定)
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if (!(originResult instanceof ResponseData)) {
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log.warn(">>> 当前请求的返回结果不是ResponseData类型，直接返回原值！");
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return originResult;
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}
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// 获取ResponseData中的值
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ResponseData responseData = (ResponseData) originResult;
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Object beWrapped = responseData.getData();
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// 如果是基本类型，不进行加工处理
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if (ObjectUtil.isBasicType(beWrapped)) {
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throw new ServiceException(WrapperExceptionEnum.BASIC_TYPE_ERROR);
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}
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// 如果是Page类型
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if (beWrapped instanceof Page) {
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// 获取Page原有对象
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Page page = (Page) beWrapped;
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// 将page中所有records都包装一遍
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ArrayList<Map<String, Object>> maps = new ArrayList<>();
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for (Object wrappedItem : page.getRecords()) {
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maps.add(this.wrapPureObject(wrappedItem, baseWrapperClasses));
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}
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page.setRecords(maps);
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responseData.setData(page);
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}
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// 如果是PageResult类型
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else if (beWrapped instanceof PageResult) {
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// 获取PageResult原有对象
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PageResult pageResult = (PageResult) beWrapped;
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// 将PageResult中所有rows都包装一遍
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ArrayList<Map<String, Object>> maps = new ArrayList<>();
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for (Object wrappedItem : pageResult.getRows()) {
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maps.add(this.wrapPureObject(wrappedItem, baseWrapperClasses));
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}
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pageResult.setRows(maps);
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responseData.setData(pageResult);
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}
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// 如果是List类型
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else if (beWrapped instanceof Collection) {
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// 获取原有的List
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Collection collection = (Collection) beWrapped;
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// 将page中所有records都包装一遍
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ArrayList<Map<String, Object>> maps = new ArrayList<>();
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for (Object wrappedItem : collection) {
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maps.add(this.wrapPureObject(wrappedItem, baseWrapperClasses));
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}
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responseData.setData(maps);
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}
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// 如果是Array类型
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else if (ArrayUtil.isArray(beWrapped)) {
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// 获取原有的Array
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Object[] objects = this.objToArray(beWrapped);
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// 将array中所有records都包装一遍
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ArrayList<Map<String, Object>> maps = new ArrayList<>();
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for (Object wrappedItem : objects) {
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maps.add(this.wrapPureObject(wrappedItem, baseWrapperClasses));
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}
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responseData.setData(maps);
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}
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// 如果是Object类型
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else {
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responseData.setData(this.wrapPureObject(beWrapped, baseWrapperClasses));
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}
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return responseData;
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}
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/**
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* 原始对象包装成一个map的过程
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* <p>
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* 期间多次根据BaseWrapper接口方法执行包装过程
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*
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* @author xuyuxiang
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* @date 2020/7/24 21:40
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*/
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@SuppressWarnings("all")
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private Map<String, Object> wrapPureObject(Object originModel, Class<? extends BaseWrapper<?>>[] baseWrapperClasses) {
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// 首先将原始的对象转化为map
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Map<String, Object> originMap = BeanUtil.beanToMap(originModel);
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// 经过多个包装类填充属性
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try {
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for (Class<? extends BaseWrapper<?>> baseWrapperClass : baseWrapperClasses) {
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BaseWrapper baseWrapper = baseWrapperClass.newInstance();
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Map<String, Object> incrementFieldsMap = baseWrapper.doWrap(originModel);
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originMap.putAll(incrementFieldsMap);
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}
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} catch (Exception e) {
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log.error(">>> 原始对象包装过程，字段转化异常：{}", e.getMessage());
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throw new ServiceException(WrapperExceptionEnum.TRANSFER_ERROR);
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}
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return originMap;
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}
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/**
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* Object转为一个array，确保object为数组类型
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*
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* @author xuyuxiang
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* @date 2020/7/24 22:06
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*/
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private Object[] objToArray(Object object) {
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int length = Array.getLength(object);
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Object[] result = new Object[length];
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for (int i = 0; i < result.length; i++) {
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result[i] = Array.get(object, i);
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}
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return result;
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}
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}
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