springboot整合mybatis-plus快速开发

1.pom.xml引入mybatis-plus依赖

<!--Mybatis-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.0.5</version>
        </dependency>

 

2.实体类

@Data
public class Book {
    private Integer id;
    private String name;
    private String type;
    private String description;

}

 

3.mapper(dao层)

@Mapper
public interface BookDao extends BaseMapper<Book> {

}

接口需要继承 BaseMapper

 

4.service

public interface IBookService   extends IService<Book>{
    

}

需要继承 IService<实体类>  里面的类型填写实体类即可自动生成该实体类的基础sql操作

 

5.实现类

@Service
public class BookServiceimpl2 extends ServiceImpl<BookDao, Book> implements IBookService {



}

需要继承 ServiceImpl  类型第一个填dao层，第二个是实体类  ，实现IBookService类

 

6.使用

@SpringBootTest
public class serviceTest {

    @Autowired
    private IBookService bookService;

    @Test
    void test1(){
        Book book = bookService.getById(2);
        System.out.println(book);
    }


    @Test
    void testSave(){
        Book book = new Book();
        book.setType("1");
        book.setName("测试数据55A4");
        book.setDescription("测试数据5AAAA");
        bookService.save(book);

    }

    @Test
    void testUpdate(){
        Book book = new Book();
        book.setId(19);
        book.setType("3");
        book.setName("测试数据aa");
        book.setDescription("测试数据bb");
        bookService.updateById(book);
    }

    @Test
    void testDelete(){
        Boolean delete = bookService.removeById(19);
        System.out.println(delete);
    }

    @Test
    void testGetAll(){
        List<Book> books = bookService.list(null);
        System.out.println(books);
    }

    @Test
    void testGetPage(){
        IPage<Book> ipage = new Page<Book>(1,5);
        IPage<Book> page = bookService.page(ipage, null);
        List<Book> records = page.getRecords();
        System.out.println(records);
    }


}

仅生成基础mysql操作，需要其它功能要自己添加接口实现。