public class DocumentService extends ServiceImpl<DocumentMapper, Document> { @Resource private DocumentMapper documentMapper; @Resource private CateMapper cateMapper; @Resource private HistoryMapper historyMapper; public List<Document> listDocument(PageInfo<?> pageInfo, Document document) { PageHelper.startPage(pageInfo.getCurrent(), pageInfo.getPageSize()); List<Document> documentList = documentMapper.selectList(Wrappers.<Document>lambdaQuery() .like(StringUtils.isNotBlank(document.getTitle()), Document::getTitle, document.getTitle()) .like(StringUtils.isNotBlank(document.getSummary()), Document::getSummary, document.getSummary()) .eq(document.getCateId() != null, Document::getCateId, document.getCateId()) .eq(document.getDeptId() != null, Document::getDeptId, document.getDeptId()) .eq(document.getActive() != null, Document::getActive, document.getActive()) .eq(document.getRecommend() != null, Document::getRecommend, document.getRecommend()) .eq(document.getCarousel() != null, Document::getCarousel, document.getCarousel()) .orderByDesc(Document::getDateTime) ); if (!documentList.isEmpty()) { List<Long> documentIdList = documentList.stream().map(Document::getCateId).collect(Collectors.toList()); Map<Long, Cate> cateMap = cateMapper.selectBatchIds(documentIdList).stream().collect(Collectors.toMap(Cate::getId, e -> e, (e1, e2) -> e2)); for (Document documentItem : documentList) { documentItem.setCate(cateMap.get(documentItem.getCateId())); } } return documentList; } public Document getDocumentById(Long id, HttpServletRequest request) { Document document = documentMapper.selectById(id); if (document == null) { return null; } document.setHits(document.getHits() + 1); documentMapper.updateById(document); document.setCate(cateMapper.selectById(document.getCateId())); History history = new History(); history.setDocumentId(id); history.setDateTime(LocalDateTime.now()); history.setUserId(Long.valueOf((String) StpUtil.getLoginId())); history.setIp(request.getRemoteAddr()); historyMapper.insert(history); return document; } public List<Document> listRecommend(Long id) { //Todo 推荐 return new ArrayList<>(); } public Boolean copyDocument(Long id) { Document document = documentMapper.selectById(id); if (document == null) { return false; } document.setDateTime(LocalDateTime.now()); document.setId(null); document.setDeptId(StpUtil.getSession().getModel(SaSession.USER, User.class).getBelongDeptId()); document.setHits(0L); document.setActive(false); document.setRecommend(false); int result = documentMapper.insert(document); return result == 1; } }

axios-resource:简单的 Axios REST 资源类

export default class UserResource extends Resource { static URL = 'user/{id}' ;} 然后公开资源（例如，通过类似服务的模块）。 import axios from 'axios' ;import UserResource from './resources/user' ;...

详谈PHP中public,private,protected,abstract等关键字的用法

本文将深入探讨public、private、protected以及abstract这四个关键字的用法。 1. public 关键字： public 是访问级别中最宽松的，表示该属性或方法可以在任何地方被访问。无论是在类的内部还是外部，...

@Service public class FormLogicService extends ServiceImpl<FormLogicMapper, FormLogic> { }

这段代码是一个 Spring Boot 服务中的一个服务类，名为 FormLogicService，继承了 ServiceImpl<FormLogicMapper, FormLogic> 类，用于提供对数据库中 FormLogic 表的访问操作。注解 @Service 声明了该类为...

public class BlogService extends ServiceImpl<BlogMapper, Blog> 解释ServiceImpl<BlogMapper, Blog>

在这里，ServiceImpl<BlogMapper, Blog>表示BlogService类继承了ServiceImpl，泛型中的BlogMapper是Blog实体类对应的Mapper接口，Blog是实体类。这样，BlogService就可以直接调用ServiceImpl中的通用方法，同时也...

@Service public class StayOutLateServiceImpl extends ServiceImpl<StayOutLateMapper, StayOutLate> implements StayOutLateService{ }请详细解释

- public class StayOutLateServiceImpl extends ServiceImpl<StayOutLateMapper, StayOutLate>：这是一个类定义，它继承了Mybatis-Plus框架中的ServiceImpl基类，并指定泛型参数为StayOutLateMapper和StayOutLate，...

@Service public class NoticeServiceImpl extends ServiceImpl<NoticeMapper, Notice> implements NoticeService{ }请详细解释代码逻辑

- extends ServiceImpl<NoticeMapper, Notice>：这是一个继承声明，它继承了 ServiceImpl 类，该类是 MyBatis-Plus 框架提供的基础服务类，用于快速构建数据库操作的服务类。 - implements NoticeService：这是一个...

@Service public class ApartmentExchangeServiceImpl extends ServiceImpl<ApartmentExchangeMapper, ApartmentExchange> implements ApartmentExchangeService{ }请详细解释每一行代码

3. extends ServiceImpl<ApartmentExchangeMapper, ApartmentExchange>: 这里使用了Java中的继承机制，继承了 Mybatis-Plus 框架提供的 ServiceImpl 类。ServiceImpl 是 Mybatis-Plus 框架提供的 Service 接口的默认...

@Service public class BorrowServiceImpl extends ServiceImpl<BorrowMapper, Borrow> implements IBorrowService {}这句话是什么意思

这句话是一个Java类的定义...- extends ServiceImpl<BorrowMapper, Borrow>表示这个类继承了ServiceImpl类，并指定了泛型类型BorrowMapper和Borrow。 - implements IBorrowService表示这个类实现了IBorrowService接口。

@Service public class ApartmentAdminServiceImpl extends ServiceImpl<ApartmentAdminMapper, ApartmentAdmin> implements ApartmentAdminService{ }请详细解释每一行代码

extends ServiceImpl<ApartmentAdminMapper, ApartmentAdmin>：这是 MyBatis-Plus 框架提供的 ServiceImpl 类，用于简化 Service 层的开发。这里指定了 ApartmentAdminMapper 接口作为操作数据库的 Mapper，并且泛型...

public class StoreServiceImpl extends ServiceImpl<StoreMapper, Store> implements StoreService{ }

这是一个Java类，它实现了StoreService接口，并继承了ServiceImpl类。在这个类中，StoreMapper是一个数据访问层的接口，Store是一个实体类，ServiceImpl是MyBatis-Plus框架提供的通用Service实现类。该类中的方法...

public interface ApartmentAdminService extends IService<ApartmentAdmin> { }与@Service public class ApartmentAdminServiceImpl extends ServiceImpl<ApartmentAdminMapper, ApartmentAdmin> implements ApartmentAdminService{ }的区别

它使用了 MyBatis-Plus 的 ServiceImpl 类，该类已经实现了 IService 接口中定义的通用 CRUD 方法。同时，它还继承了 ApartmentAdminMapper 接口，该接口是 ApartmentAdmin 实体的 DAO 层，用于对数据库进行...

public class ScoreServiceImpl extends ServiceImpl<ScoreMapper, ScoreEntity> implements ScoreService {

这是一个Java类，实现了ScoreService接口，继承了ServiceImpl类，并指定了ScoreMapper和ScoreEntity作为泛型参数。...ServiceImpl是MyBatis-Plus框架提供的通用Service实现类，可以减少开发人员的重复代码。

public class DictionaryServiceImpl extends ServiceImpl<DictionaryMapper, Dictionary> implements DictionaryService解释一下这个代码

这段代码是一个Java类的定义，类名为DictionaryServiceImpl，它继承了一个叫做ServiceImpl的类，并且指定了两个泛型参数DictionaryMapper和Dictionary，表明DictionaryServiceImpl类将操作数据库中的字典表。...

public class VacateServiceImpl extends ServiceImpl<VacateMapper, Vacate> implements VacateService{ }请用文字描述代码逻辑

其中，ServiceImpl<VacateMapper, Vacate> 是 MyBatis-Plus 提供的通用 Service 实现类，用于简化 Service 层的开发。在该类中，我们可以通过调用 ServiceImpl 类中封装好的方法来对 Vacate 实体进行增删改查操作...

java @DS注解@Service @DS("slave_1") public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService { }为什么数据源没有给我切换

public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService { } 如果你有一个名为 ServiceImpl 的基础类（如Spring的通用服务实现），并且UserServiceImpl 实现了 ...

@Service public class CateService extends ServiceImpl<CateMapper, Cate> { @Resource private CateMapper cateMapper; public List<Cate> listCate(Cate cate) { return cateMapper.selectList(Wrappers.<Cate>lambdaQuery() .like(StringUtils.isNotBlank(cate.getName()), Cate::getName, cate.getName()) .eq(cate.getActive() != null, Cate::getActive, cate.getActive()) .orderByAsc(Cate::getSort) ); } }

它继承自 ServiceImpl<CateMapper, Cate>，表示它是一个通用的 CRUD 服务类，针对 Cate 实体类的数据库操作。在该类中，使用 @Resource 注解对 CateMapper 进行注入，以便在方法中使用该对象进行数据库操作。 ...

解释这几段代码<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.weather.project.mapper.ChartDataMapper"> </mapper> <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.weather.project.mapper.UserMapper"> </mapper> @Mapper public interface ChartDataMapper extends BaseMapper<ChartData> {} @Mapper public interface UserMapper extends BaseMapper<User> {} @Service public class ChartDataServiceImpl extends ServiceImpl<ChartDataMapper, ChartData> implements ChartDataService {} @Service public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {} public interface ChartDataService extends IService<ChartData> {} public interface UserService extends IService<User> {}

这是MyBatis的代码片段，用于定义数据访问对象与实体类之间的映射关系。...@Service 注解表示这些类是Spring的Service类，用于提供业务逻辑。最后，这些业务逻辑接口继承自IService接口，用于提供常用的增删改查操作。

@Service public class CateService extends ServiceImpl<CateMapper, Cate> { @Resource private CateMapper cateMapper; public List<Cate> listCate(Cate cate) { return cateMapper.selectList(Wrappers.<Cate>lambdaQuery() .like(StringUtils.isNotBlank(cate.getName()), Cate::getName, cate.getName()) .eq(cate.getActive() != null, Cate::getActive, cate.getActive()) .orderByAsc(Cate::getSort) ); } }

在查询时使用了Wrappers.<Cate>lambdaQuery()创建一个LambdaQueryWrapper对象，用于构建查询条件。通过链式调用.like、.eq和.orderByAsc等方法，根据Cate对象的属性值构建查询条件。其中： - .like...

java里 class BaseDaoImpl<M extends BaseMapper<T>, T> extends ServiceImpl<M, T> implements BaseDao<T>是什么意思

具体来说，M 代表一个类型为 BaseMapper<T> 的泛型类或接口，T 代表一个类型参数，该类型参数将会在 BaseMapper 接口中使用。因此，BaseDaoImpl 类的实现是一个基于 BaseMapper 接口和 T 类型的数据...

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axios-resource:简单的 Axios REST 资源类

详谈PHP中public,private,protected,abstract等关键字的用法

@Service public class FormLogicService extends ServiceImpl<FormLogicMapper, FormLogic> { }

public class BlogService extends ServiceImpl<BlogMapper, Blog> 解释ServiceImpl<BlogMapper, Blog>

@Service public class StayOutLateServiceImpl extends ServiceImpl<StayOutLateMapper, StayOutLate> implements StayOutLateService{ }请详细解释

@Service public class NoticeServiceImpl extends ServiceImpl<NoticeMapper, Notice> implements NoticeService{ }请详细解释代码逻辑

@Service public class ApartmentExchangeServiceImpl extends ServiceImpl<ApartmentExchangeMapper, ApartmentExchange> implements ApartmentExchangeService{ }请详细解释每一行代码

@Service public class BorrowServiceImpl extends ServiceImpl<BorrowMapper, Borrow> implements IBorrowService {}这句话是什么意思

@Service public class ApartmentAdminServiceImpl extends ServiceImpl<ApartmentAdminMapper, ApartmentAdmin> implements ApartmentAdminService{ }请详细解释每一行代码

public class StoreServiceImpl extends ServiceImpl<StoreMapper, Store> implements StoreService{ }

public interface ApartmentAdminService extends IService<ApartmentAdmin> { }与@Service public class ApartmentAdminServiceImpl extends ServiceImpl<ApartmentAdminMapper, ApartmentAdmin> implements ApartmentAdminService{ }的区别

public class ScoreServiceImpl extends ServiceImpl<ScoreMapper, ScoreEntity> implements ScoreService {

public class DictionaryServiceImpl extends ServiceImpl<DictionaryMapper, Dictionary> implements DictionaryService解释一下 这个代码

public class VacateServiceImpl extends ServiceImpl<VacateMapper, Vacate> implements VacateService{ }请用文字描述代码逻辑

java @DS注解@Service @DS("slave_1") public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService { }为什么数据源没有给我切换

java里 class BaseDaoImpl<M extends BaseMapper<T>, T> extends ServiceImpl<M, T> implements BaseDao<T>是什么意思

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public class DictionaryServiceImpl extends ServiceImpl<DictionaryMapper, Dictionary> implements DictionaryService解释一下这个代码