mybatis的xml配置和註解配置
阿新 • • 發佈：2018-05-31
mybatis 註解配置xml配置
spring-application.xml
<?xml version = "1.0" encoding = "UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd" <import resource="spring-annotation-componentScan.xml" /> <import resource="spring-data.xml" /> <import resource="spring-mybatis.xml" /> <import resource="spring-transaction.xml" /> </beans>
spring-annotation-componentScan.xml
<?xml version = "1.0" encoding = "UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <context:component-scan base-package="com.demo"/> </beans>
spring-data.xml
<?xml version = "1.0" encoding = "UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <context:property-placeholder ignore-unresolvable="true" location="jdbc.properties" /> <!-- 配置數據源 使用的是Druid數據源 --> <bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource"> <property name="url" value="${jdbc.url}" /> <property name="driverClassName" value="${jdbc.driverClassName}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <!-- 初始化連接大小 --> <property name="initialSize" value="${druid.initialSize}" /> <!-- 連接池最大使用連接數量 --> <property name="maxActive" value="${druid.maxActive}" /> <!-- 連接池最小空閑 --> <property name="minIdle" value="${druid.minIdle}" /> <!-- 獲取連接最大等待時間 --> <property name="maxWait" value="${druid.maxWait}" /> <property name="poolPreparedStatements" value="${druid.poolPreparedStatements}" /> <property name="maxPoolPreparedStatementPerConnectionSize" value="${druid.maxPoolPreparedStatementPerConnectionSize}" /> <!-- 用來檢測有效sql --> <property name="validationQuery" value="${druid.validationQuery}" /> <property name="testOnBorrow" value="${druid.testOnBorrow}" /> <property name="testOnReturn" value="${druid.testOnReturn}" /> <property name="testWhileIdle" value="${druid.testWhileIdle}" /> <!-- 配置間隔多久才進行一次檢測，檢測需要關閉的空閑連接，單位是毫秒 --> <property name="timeBetweenEvictionRunsMillis" value="${druid.timeBetweenEvictionRunsMillis}" /> <!-- 配置一個連接在池中最小生存的時間，單位是毫秒 --> <property name="minEvictableIdleTimeMillis" value="${druid.minEvictableIdleTimeMillis}" /> <!-- 打開removeAbandoned功能 --> <property name="removeAbandoned" value="${druid.removeAbandoned}" /> <!-- 1800秒，也就是30分鐘 --> <property name="removeAbandonedTimeout" value="${druid.removeAbandonedTimeout}" /> <!-- 關閉abanded連接時輸出錯誤日誌 --> <property name="logAbandoned" value="${druid.logAbandoned}" /> <!-- 監控數據庫 <property name="filters" value="${druid.filters}" /> --> </bean> </beans>
spring-mybatis.xml
<?xml version = "1.0" encoding = "UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<!-- 創建SqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 數據源：必須屬性 -->
<property name="dataSource" ref="dataSource" />
<!-- 指定mybatis的 XML映射器文件地址 -->
<property name="mapperLocations" value="classpath*:mybatis/*.xml" />
<!-- 可在mybatis配置文件中設置 -->
<property name="configuration">
<bean class="org.apache.ibatis.session.Configuration">
<property name="mapUnderscoreToCamelCase" value="true"/>
</bean>
</property>
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.demo.mapper" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
</bean>
</beans>spring-transaction.xml
<?xml version = "1.0" encoding = "UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 配置事務管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 註解方式配置事物 -->
<tx:annotation-driven transaction-manager="transactionManager" />
</beans>測試
ClassPathXmlApplicationContext context11 = new ClassPathXmlApplicationContext("classpath:spring-application.xml");
UserMapper userMapper = context11.getBean(UserMapper.class);
User user = userMapper.getById(6498);
System.out.println("id = [" + user.getId() + "]");
System.out.println("name = [" + user.getName() + "]");註解配置
ApplicationConfig啟動入口
@Configuration
@Import({DaoConfig.class, ComponentScanConfig.class})
public class ApplicationConfig {
}ComponentScanConfig掃描註解bean
@Configuration
@ComponentScan(basePackages = {"com.demo.enity","com.demo.dao","com.demo.mapper","com.demo.service"})
public class ComponentScanConfig {
}DaoConfig持久層配置
@Configuration
@Import({MybatisConfig.class, TransactionConfig.class})
public class DaoConfig {
}MybatisConfig ORM配置
@Configuration
@Import(DruidPoolConfig.class)
public class MybatisConfig {
@Autowired
private DataSource dataSource;
@Bean("sqlSessionFactory")
public SqlSessionFactoryBean sqlSessionFactory() throws IOException {
SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
sqlSessionFactoryBean.setDataSource(dataSource);
sqlSessionFactoryBean.setFailFast(true);
sqlSessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath*:mybatis/*.xml"));
org.apache.ibatis.session.Configuration configuration = new org.apache.ibatis.session.Configuration();
configuration.setMapUnderscoreToCamelCase(true);
sqlSessionFactoryBean.setConfiguration(configuration);
return sqlSessionFactoryBean;
}
@Bean
public static MapperScannerConfigurer mapperScannerConfigurer() {
MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer();
mapperScannerConfigurer.setBasePackage("com.demo.mapper");
mapperScannerConfigurer.setSqlSessionFactoryBeanName("sqlSessionFactory");
return mapperScannerConfigurer;
}
}註意：
MapperScannerConfigurer 實現了BeanDefinitionRegistryPostProcessor接口，因此該bean必須static修飾。否則啟動加載的順序會出現錯誤，如：DataSource 為null;
PathMatchingResourcePatternResolver此類可以通配符加載資源；
DruidPoolConfig連接池配置
@Configuration
@Import(DruidJdbcConfig.class)
public class DruidPoolConfig {
private final static Logger LOGGER = LoggerFactory.getLogger(DruidPoolConfig.class);
@Autowired
private DruidJdbcConfig druidJdbcConfig;
@Bean("dataSource")
public DataSource dataSource(){
DruidDataSource datasource = new DruidDataSource();
datasource.setUrl(druidJdbcConfig.getUrl());
datasource.setUsername(druidJdbcConfig.getUsername());
datasource.setPassword(druidJdbcConfig.getPassword());
datasource.setDriverClassName(druidJdbcConfig.getDriverClassName());
datasource.setInitialSize(druidJdbcConfig.getInitialSize());
datasource.setMinIdle(druidJdbcConfig.getMinIdle());
datasource.setMaxActive(druidJdbcConfig.getMaxActive());
datasource.setMaxWait(druidJdbcConfig.getMaxWait());
datasource.setTimeBetweenEvictionRunsMillis(druidJdbcConfig.getTimeBetweenEvictionRunsMillis());
datasource.setMinEvictableIdleTimeMillis(druidJdbcConfig.getMinEvictableIdleTimeMillis());
datasource.setValidationQuery(druidJdbcConfig.getValidationQuery());
datasource.setTestWhileIdle(druidJdbcConfig.isTestWhileIdle());
datasource.setTestOnBorrow(druidJdbcConfig.isTestOnBorrow());
datasource.setTestOnReturn(druidJdbcConfig.isTestOnReturn());
datasource.setRemoveAbandoned(druidJdbcConfig.isRemoveAbandoned());
datasource.setRemoveAbandonedTimeout(druidJdbcConfig.getRemoveAbandonedTimeout());
datasource.setLogAbandoned(druidJdbcConfig.isLogAbandoned());
try {
datasource.setFilters(druidJdbcConfig.getFilters());
} catch (SQLException e) {
LOGGER.error("datasource.setFilters occur error.", e);
}
return datasource;
}
}
DruidJdbcConfig數據庫連接配置
@Configuration
@PropertySource("classpath:jdbc.properties")
public class DruidJdbcConfig {
@Value("${jdbc.url}")
private String url;
@Value("${jdbc.username}")
private String username;
@Value("${jdbc.password}")
private String password;
@Value("${jdbc.driverClassName}")
private String driverClassName;
@Value("${druid.initialSize}")
private int initialSize;
@Value("${druid.minIdle}")
private int minIdle;
@Value("${druid.maxActive}")
private int maxActive;
@Value("${druid.maxWait}")
private int maxWait;
@Value("${druid.timeBetweenEvictionRunsMillis}")
private int timeBetweenEvictionRunsMillis;
@Value("${druid.minEvictableIdleTimeMillis}")
private int minEvictableIdleTimeMillis;
@Value("${druid.validationQuery}")
private String validationQuery;
@Value("${druid.testWhileIdle}")
private boolean testWhileIdle;
@Value("${druid.testOnBorrow}")
private boolean testOnBorrow;
@Value("${druid.testOnReturn}")
private boolean testOnReturn;
@Value("${druid.removeAbandoned}")
private boolean removeAbandoned;
@Value("${druid.removeAbandonedTimeout}")
private int removeAbandonedTimeout;
@Value("${druid.logAbandoned}")
private boolean logAbandoned;
@Value("${druid.filters}")
private String filters;
@Value("${druid.logSlowSql}")
private boolean logSlowSql;
@Value("${druid.loginUsername}")
private String loginUsername;
@Value("${druid.loginPassword}")
private String loginPassword;TransactionConfig事物配置
@Configuration
@Import(DruidPoolConfig.class)
@EnableTransactionManagement
public class TransactionConfig {
@Autowired
private DataSource dataSource;
@Bean("transactionManager")
public DataSourceTransactionManager transactionManager(){
DataSourceTransactionManager dataSourceTransactionManager = new DataSourceTransactionManager();
dataSourceTransactionManager.setDataSource(dataSource);
return dataSourceTransactionManager;
}
}註意：@EnableTransactionManagement註解管理事物，相當於 <tx:annotation-driven transaction-manager="transactionManager" />
測試
AnnotationConfigApplicationContext context12 = new AnnotationConfigApplicationContext();
context12.register(ApplicationConfig.class);
context12.refresh();
UserService userService = context12.getBean(UserService.class);
User user = userService.save(6498);
System.out.println("id = [" + user.getId() + "]");
System.out.println("name = [" + user.getName() + "]");mybatis的xml配置和註解配置