【Spring事务控制】完全基于注解的声明式事务控制

SpringConfig

package config;

import org.springframework.context.annotation.*;
import org.springframework.transaction.annotation.EnableTransactionManagement;

/**
 * spring的配置类，相当于bean.xml
 */
@Configuration
@ComponentScan("com.czy")
@Import({JdbcConfig.class,TransactionConfig.class})
@PropertySource("jdbcConfig.properties")
@EnableAspectJAutoProxy(proxyTargetClass = true)
@EnableTransactionManagement
public class SpringConfiguration {
}

JdbcConfig

package config;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DriverManagerDataSource;

import javax.sql.DataSource;

/**
 * 和连接数据库相关的配置类
 */
public class JdbcConfig {

    @Value("${jdbc.driver}")
    private String driver;

    @Value("${jdbc.url}")
    private String url;

    @Value("${jdbc.username}")
    private String username;

    @Value("${jdbc.password}")
    private String password;

    /**
     * 创建JdbcTemplate对象
     * @param dataSource
     * @return
     */
    @Bean(name = "jdbcTemplate")
    public JdbcTemplate createJdbcTemplate(DataSource dataSource){
        return new JdbcTemplate(dataSource);
    }

    @Bean(name = "dataSource")
    public DataSource createDateSource(){
        DriverManagerDataSource ds = new DriverManagerDataSource();
        ds.setDriverClassName(driver);
        ds.setUsername(username);
        ds.setPassword(password);
        ds.setUrl(url);
        return ds;
    }
}

TransactionConfig

package config;

import org.springframework.context.annotation.Bean;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;

import javax.sql.DataSource;

/**
 * 和事务相关的配置类
 */
public class TransactionConfig {
    /**
     * 用于创建事务管理器对象
     * @param ds
     * @return
     */
    @Bean(name = "transactionManager")
    public PlatformTransactionManager createTransactionManager(DataSource ds){
        return new DataSourceTransactionManager(ds);
    }
}