【SpringBoot】整合

(知识目录)

一、整合Junit

使用@SpringBootTest注解可以定义测试类，要保证测试类在启动类在同一个包下，或者在启动类所处的类的子包下；如果不符合，要使用@SpringBootTest(classes = Demo3Application.class)

下面通过service层和实现类模拟测试

public interface UserService {

    void say();

}

@Service
public class UserServiceImpl implements UserService {
    @Override
    public void say() {
        System.out.println("user service --> ");
    }
}

@SpringBootTest
class Demo3ApplicationTests {

    @Autowired
    private UserService userService;

    @Test
    public void testSay() {
        userService.say();
    }
}

二、整合mybatis

步骤：

（1）新建SpringBoot项目，勾选Mybatis和Mysql依赖，并导入Druid连接池。

<!--        druid-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.2.10</version>
        </dependency>

（2）在application.yml文件配置数据库连接相关信息

（3）根据数据库表编写实体类

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Book {

    private Integer id;
    private String bookType;
    private String bookName;
    private String bookDesc;

}

（4）编写Mapper层接口

@Mapper
public interface BookMapper {

    @Select("SELECT * FROM book WHERE id = #{id}")
    @Results({@Result(column = "book_type",property = "bookType"),@Result(column = "book_name",property = "bookName"),@Result(column = "book_desc",property = "bookDesc")})
    Book selectById(@Param("id") Integer id);
}

（5）测试并对比结果

@SpringBootTest
public class BookMapperTest {

    @Autowired
    private BookMapper mapper;

    @Test
    public void testSelectById() {
        Book book = mapper.selectById(2);
        System.out.println(book);
    }
}

三、基于SpringBoot整合SSM

使用index.html设置访问首页跳转：

<script>
    document.location.href="pages/books.html"
</script>