基于SpringBoot 开发理财产品系统.zip

package cn.edu.mju.manager.service.serviceImpl; import cn.edu.mju.dto.PageDTO; import cn.edu.mju.entity.Product; import cn.edu.mju.enums.ProductStatusEnum; import cn.edu.mju.manager.enums.ErrorEnum; import cn.edu.mju.manager.mapper.ProductMapper; import cn.edu.mju.manager.service.ProductService; import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper; import com.baomidou.mybatisplus.core.metadata.IPage; import com.baomidou.mybatisplus.extension.plugins.pagination.Page; import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl; import lombok.extern.slf4j.Slf4j; import org.springframework.stereotype.Service; import org.springframework.util.Assert; import java.math.BigDecimal; import java.util.Date; import java.util.List; /** * @author <a href="https://github.com/haidilaohotpot">cheng</a> * @since 1.0.0 2019/10/8 */ @Service @Slf4j public class ProductServiceImpl extends ServiceImpl<ProductMapper, Product> implements ProductService { @Override public Product add(Product product) { //数据校验 checkProduct(product); //设置默认值 setDefault(product); //储存 this.save(product); log.debug("创建产品，结果:{}",product); return product; } /** * * 分页查询 * @param idList * @param minRewardRate * @param maxRewardRate * @param statusList * @param pageDTO * @return */ @Override public PageDTO query(List<String> idList, BigDecimal minRewardRate, BigDecimal maxRewardRate, List<String> statusList, PageDTO pageDTO) { QueryWrapper<Product> wrapper = buildWrapper(idList,minRewardRate,maxRewardRate,statusList); IPage<Product> page = buildPage(pageDTO); page = this.page(page, wrapper); pageDTO = build(page); return pageDTO; } /** * 构建分页数据 * @param page * @return */ private PageDTO build(IPage<Product> page) { Integer pages = Math.toIntExact(page.getPages()); List<Product> data = page.getRecords(); Integer current = Math.toIntExact(page.getCurrent()); Integer size = Math.toIntExact(page.getSize()); Integer total = Math.toIntExact(page.getTotal()); return new PageDTO(pages, size, current, total, data); } /** * 构建分页对象 * @param pageDTO * @return */ private IPage<Product> buildPage(PageDTO pageDTO) { IPage<Product> page = new Page<>(); page.setSize(pageDTO.getPageSize()); page.setCurrent(pageDTO.getCurrent()); return page; } /** * 封装mybatis分页查询所需的对象 * @param idList * @param minRewardRate * @param maxRewardRate * @param statusList * @return */ private QueryWrapper<Product> buildWrapper(List<String> idList, BigDecimal minRewardRate, BigDecimal maxRewardRate, List<String> statusList) { QueryWrapper<Product> wrapper = new QueryWrapper<>(); if (idList != null) { wrapper.in("id", idList); } if (minRewardRate != null && maxRewardRate != null) { wrapper.between("reward_rate", minRewardRate, maxRewardRate); // wrapper.or().between("reward_rate", minRewardRate, maxRewardRate); } if (statusList != null) { wrapper.in("status",statusList); // wrapper.or().in("status",statusList); } return wrapper; } /** * 设置默认值 * * 创建时间、更新时间 * 投资步长、锁定期 * * @param product */ private void setDefault(Product product) { if (product.getCreateAt() == null) { product.setCreateAt(new Date()); } if (product.getUpdateAt() == null) { product.setUpdateAt(new Date()); } if (product.getStepAmount() == null) { product.setStepAmount(BigDecimal.ZERO); } if (product.getLockTerm() == null) { product.setLockTerm(0); } if (product.getStatus() == null) { product.setStatus(ProductStatusEnum.AUDITING.name()); } } /** * 产品数据校验 * 1.非空数据 * 2.收益率0-30以内 * 3.投资步长需为整数 * @param product */ private void checkProduct(Product product) { Assert.notNull(product.getId(),ErrorEnum.ID_NOT_NULL.getCode()); //其他非空校验 Assert.isTrue(BigDecimal.ZERO.compareTo(product.getRewardRate()) < 0 && BigDecimal.valueOf(30).compareTo(product.getRewardRate()) >= 0,"收益率错误"); Assert.isTrue(BigDecimal.valueOf(product.getStepAmount().longValue()).compareTo(product.getStepAmount()) == 0, "投资步长要为整数"); } }