Spring整合

一、MyBatis核心对象分析

其中最关键的对象为SqlSessionFactory对象

二、整合

1. 整合MyBatis

1. 导入pom.xml坐标（Spring整合MyBatis的两个关键坐标）

   <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-jdbc</artifactId>
       <version>6.0.4</version>
   </dependency>
   <dependency>
       <groupId>org.mybatis</groupId>
       <artifactId>mybatis-spring</artifactId>
       <version>1.3.0</version>
   </dependency>
   

2. Spring配置类

   @Configuration
   @ComponentScan("com.cikian")
   @PropertySource({"classpath:jdbc.properties"};)
   @Import({JdbcConfig.class, MyBatisConfig.class};)
   public class SpringConfig {
   };
   

3. 配置数据源

   public class JdbcConfig {
       @Value("${jdbc.driver};")
       private String driverClassName;
       @Value("${jdbc.url};")
       private String url;
       @Value("${jdbc.username};")
       private String username;
       @Value("${jdbc.password};")
       private String password;
   
       @Bean
       public DataSource dataSource() {
           DruidDataSource dataSource = new DruidDataSource();
           dataSource.setDriverClassName(driverClassName);
           dataSource.setUrl(url);
           dataSource.setUsername(username);
           dataSource.setPassword(password);
           return dataSource;
       };
   };
   

4. MyBatis配置类

   public class MyBatisConfig {
       @Bean
       public SqlSessionFactoryBean sqlSessionFactory(DataSource dataSource) {
           SqlSessionFactoryBean ssfb = new SqlSessionFactoryBean();
           ssfb.setTypeAliasesPackage("com.cikian.domain");
           ssfb.setDataSource(dataSource);
           return ssfb;
       };
   
       @Bean
       public MapperScannerConfigurer mapperScannerConfigurer() {
           MapperScannerConfigurer msc = new MapperScannerConfigurer();
           msc.setBasePackage("com.cikian.dao");
           return msc;
       };
   };
   

5. 开发使用

   public class Main {
       public static void main(String[] args) {
           ApplicationContext ctx = new AnnotationConfigApplicationContext(SpringConfig.class);
           AccountService accountService = ctx.getBean(AccountService.class);
           Account account = accountService.findById(1);
           System.out.println(account);
       };
   };
   

2. 整合JUnit

1. 导入两个关键坐标

   <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
       <version>4.12</version>
       <scope>test</scope>
   </dependency>
   <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-test</artifactId>
       <version>6.0.4</version>
   </dependency>
   

2. 测试

   @RunWith(SpringJUnit4ClassRunner.class)
   @ContextConfiguration(classes = SpringConfig.class)
   public class AccountServiceTest {
       @Autowired
       private AccountService accountService;
   
       @Test
       public void testFindById() {
           System.out.println(accountService.findById(2));
       };
   
       @Test
       public void testFindAll() {
           System.out.println(accountService.findAll());
       };
   };