RootConfig类

  1 package com.ssm.yjblogs.config;
  2 
  3 import java.util.Properties;
  4 
  5 import javax.sql.DataSource;
  6 
  7 import org.apache.commons.dbcp.BasicDataSourceFactory;
  8 import org.mybatis.spring.SqlSessionFactoryBean;
  9 import org.mybatis.spring.mapper.MapperScannerConfigurer;
 10 import org.springframework.context.annotation.Bean;
 11 import org.springframework.context.annotation.ComponentScan;
 12 import org.springframework.context.annotation.ComponentScan.Filter;
 13 import org.springframework.context.annotation.Configuration;
 14 import org.springframework.context.annotation.FilterType;
 15 import org.springframework.core.io.ClassPathResource;
 16 import org.springframework.core.io.Resource;
 17 //import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
 18 //import org.springframework.data.redis.core.RedisTemplate;
 19 //import org.springframework.data.redis.serializer.JdkSerializationRedisSerializer;
 20 //import org.springframework.data.redis.serializer.RedisSerializer;
 21 //import org.springframework.data.redis.serializer.StringRedisSerializer;
 22 import org.springframework.jdbc.datasource.DataSourceTransactionManager;
 23 import org.springframework.stereotype.Repository;
 24 import org.springframework.stereotype.Service;
 25 import org.springframework.transaction.PlatformTransactionManager;
 26 import org.springframework.transaction.annotation.EnableTransactionManagement;
 27 import org.springframework.transaction.annotation.TransactionManagementConfigurer;
 28 
 29 //import redis.clients.jedis.JedisPoolConfig;
 30 
 31 @Configuration
 32 //定义Spring 扫描的包
 33 @ComponentScan(value= "com.*", includeFilters= {@Filter(type = FilterType.ANNOTATION, value ={Service.class})})
 34 //使用事务驱动管理器
 35 @EnableTransactionManagement
 36 //实现接口TransactionManagementConfigurer，这样可以配置注解驱动事务
 37 public class RootConfig implements TransactionManagementConfigurer {
 38     
 39     private DataSource dataSource = null;
 40     
 41     /**
 42      * 配置数据库.
 43      * @return 数据连接池
 44      */
 45     @Bean(name = "dataSource") //使用@Bean装配数据源  P245
 46     public DataSource initDataSource() {
 47         if (dataSource != null) {
 48             return dataSource;
 49         }
 50         Properties props = new Properties();
 51         props.setProperty("driverClassName", "com.mysql.jdbc.Driver");//jdbc驱动
 52         props.setProperty("url", "jdbc:mysql://localhost:3306/chapter22");//url
 53         props.setProperty("username", "yujie");//数据库账号
 54         props.setProperty("password", "123456");//数据库密码
 55        props.setProperty("maxActive", "200");//最大连接数量
 56         props.setProperty("maxIdle", "20");//最大的空闲连接数量
 57         props.setProperty("maxWait", "30000");//最大的等待时间，单位是毫秒
 58         try {
 59             dataSource = BasicDataSourceFactory.createDataSource(props);
 60         } catch (Exception e) {
 61             e.printStackTrace();
 62         }
 63         return dataSource;
 64     }
 65     
 66     /***
 67      * 配置SqlSessionFactoryBean
 68      * @return SqlSessionFactoryBean
 69      */
 70     @Bean(name="sqlSessionFactory")
 71     public SqlSessionFactoryBean initSqlSessionFactory() {
 72         SqlSessionFactoryBean sqlSessionFactory = new SqlSessionFactoryBean();
 73         sqlSessionFactory.setDataSource(initDataSource());
 74         //配置MyBatis配置文件
 75         //src下的mybatis配置文件
 76         Resource resource = new ClassPathResource("mybatis/mybatis-config.xml");
 77         sqlSessionFactory.setConfigLocation(resource);
 78         return sqlSessionFactory;
 79     }
 80     
 81     /***
 82      * 通过自动扫描，发现MyBatis Mapper接口
 83      * @return Mapper扫描器
 84      */
 85     //P325
 86     @Bean 
 87     public MapperScannerConfigurer initMapperScannerConfigurer() {
 88         MapperScannerConfigurer msc = new MapperScannerConfigurer();
 89         //以com.开头的
 90         msc.setBasePackage("com.*");
 91         //设置SqlSessionFactoryBean名字
 92         msc.setSqlSessionFactoryBeanName("sqlSessionFactory");
 93         //把注解为@Repository的接口扫描为Mapper对象，存放在容器中，对于多个包的扫描可以用半角逗号分隔开来
 94         //注解为@Repository的接口表示数据访问层(DAO, Data Access Object)
 95         msc.setAnnotationClass(Repository.class);
 96         return msc;
 97     }
 98     
 99     
100     /**
101      * 实现接口方法，注册注解事务，当@Transactional 使用的时候产生数据库事务 
102      */
103     @Override
104     @Bean(name="annotationDrivenTransactionManager")
105     //P334
106     public PlatformTransactionManager annotationDrivenTransactionManager() {
107         DataSourceTransactionManager transactionManager = 
108            new DataSourceTransactionManager();
109         transactionManager.setDataSource(initDataSource());
110         return transactionManager;
111     }
112     
113 //    @Bean(name = "redisTemplate")
114 //    public RedisTemplate initRedisTemplate() {
115 //        JedisPoolConfig poolConfig = new JedisPoolConfig();
116 //        //最大空闲数
117 //        poolConfig.setMaxIdle(50);
118 //        //最大连接数
119 //        poolConfig.setMaxTotal(100);
120 //        //最大等待毫秒数
121 //        poolConfig.setMaxWaitMillis(20000);
122 //        //创建Jedis链接工厂
123 //        JedisConnectionFactory connectionFactory = new JedisConnectionFactory(poolConfig);
124 //        connectionFactory.setHostName("localhost");
125 //        connectionFactory.setPort(6379);
126 //        //调用后初始化方法，没有它将抛出异常
127 //        connectionFactory.afterPropertiesSet();
128 //        //自定Redis序列化器
129 //        RedisSerializer jdkSerializationRedisSerializer = new JdkSerializationRedisSerializer();
130 //        RedisSerializer stringRedisSerializer = new StringRedisSerializer();
131 //        //定义RedisTemplate，并设置连接工程[修改为：工厂]
132 //        RedisTemplate redisTemplate = new RedisTemplate();
133 //        redisTemplate.setConnectionFactory(connectionFactory);
134 //        //设置序列化器
135 //        redisTemplate.setDefaultSerializer(stringRedisSerializer);
136 //        redisTemplate.setKeySerializer(stringRedisSerializer);
137 //        redisTemplate.setValueSerializer(stringRedisSerializer);
138 //        redisTemplate.setHashKeySerializer(stringRedisSerializer);
139 //        redisTemplate.setHashValueSerializer(stringRedisSerializer);
140 //        return redisTemplate;
141 //    }
142     
143 }

无行号版本:

package com.ssm.yjblogs.config;

import java.util.Properties;

import javax.sql.DataSource;

import org.apache.commons.dbcp.BasicDataSourceFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.mapper.MapperScannerConfigurer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.ComponentScan.Filter;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.FilterType;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
//import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
//import org.springframework.data.redis.core.RedisTemplate;
//import org.springframework.data.redis.serializer.JdkSerializationRedisSerializer;
//import org.springframework.data.redis.serializer.RedisSerializer;
//import org.springframework.data.redis.serializer.StringRedisSerializer;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.stereotype.Repository;
import org.springframework.stereotype.Service;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.transaction.annotation.TransactionManagementConfigurer;

//import redis.clients.jedis.JedisPoolConfig;

@Configuration
//定义Spring 扫描的包
@ComponentScan(value= "com.*", includeFilters= {@Filter(type = FilterType.ANNOTATION, value ={Service.class})})
//使用事务驱动管理器
@EnableTransactionManagement
//实现接口TransactionManagementConfigurer，这样可以配置注解驱动事务
public class RootConfig implements TransactionManagementConfigurer {
    
    private DataSource dataSource = null;
    
    /**
     * 配置数据库.
     * @return 数据连接池
     */
    @Bean(name = "dataSource") //使用@Bean装配数据源  P245
    public DataSource initDataSource() {
        if (dataSource != null) {
            return dataSource;
        }
        Properties props = new Properties();
        props.setProperty("driverClassName", "com.mysql.jdbc.Driver");//jdbc驱动
        props.setProperty("url", "jdbc:mysql://localhost:3306/chapter22");//url
        props.setProperty("username", "yujie");//数据库账号
        props.setProperty("password", "123456");//数据库密码
       props.setProperty("maxActive", "200");//最大连接数量
        props.setProperty("maxIdle", "20");//最大的空闲连接数量
        props.setProperty("maxWait", "30000");//最大的等待时间，单位是毫秒
        try {
            dataSource = BasicDataSourceFactory.createDataSource(props);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return dataSource;
    }
    
    /***
     * 配置SqlSessionFactoryBean
     * @return SqlSessionFactoryBean
     */
    @Bean(name="sqlSessionFactory")
    public SqlSessionFactoryBean initSqlSessionFactory() {
        SqlSessionFactoryBean sqlSessionFactory = new SqlSessionFactoryBean();
        sqlSessionFactory.setDataSource(initDataSource());
        //配置MyBatis配置文件
        //src下的mybatis配置文件
        Resource resource = new ClassPathResource("mybatis/mybatis-config.xml");
        sqlSessionFactory.setConfigLocation(resource);
        return sqlSessionFactory;
    }
    
    /***
     * 通过自动扫描，发现MyBatis Mapper接口
     * @return Mapper扫描器
     */
    //P325
    @Bean 
    public MapperScannerConfigurer initMapperScannerConfigurer() {
        MapperScannerConfigurer msc = new MapperScannerConfigurer();
        //以com.开头的
        msc.setBasePackage("com.*");
        //设置SqlSessionFactoryBean名字
        msc.setSqlSessionFactoryBeanName("sqlSessionFactory");
        //把注解为@Repository的接口扫描为Mapper对象，存放在容器中，对于多个包的扫描可以用半角逗号分隔开来
        //注解为@Repository的接口表示数据访问层(DAO, Data Access Object)
        msc.setAnnotationClass(Repository.class);
        return msc;
    }
    
    
    /**
     * 实现接口方法，注册注解事务，当@Transactional 使用的时候产生数据库事务 
     */
    @Override
    @Bean(name="annotationDrivenTransactionManager")
    //P334
    public PlatformTransactionManager annotationDrivenTransactionManager() {
        DataSourceTransactionManager transactionManager = 
           new DataSourceTransactionManager();
        transactionManager.setDataSource(initDataSource());
        return transactionManager;
    }
    
//    @Bean(name = "redisTemplate")
//    public RedisTemplate initRedisTemplate() {
//        JedisPoolConfig poolConfig = new JedisPoolConfig();
//        //最大空闲数
//        poolConfig.setMaxIdle(50);
//        //最大连接数
//        poolConfig.setMaxTotal(100);
//        //最大等待毫秒数
//        poolConfig.setMaxWaitMillis(20000);
//        //创建Jedis链接工厂
//        JedisConnectionFactory connectionFactory = new JedisConnectionFactory(poolConfig);
//        connectionFactory.setHostName("localhost");
//        connectionFactory.setPort(6379);
//        //调用后初始化方法，没有它将抛出异常
//        connectionFactory.afterPropertiesSet();
//        //自定Redis序列化器
//        RedisSerializer jdkSerializationRedisSerializer = new JdkSerializationRedisSerializer();
//        RedisSerializer stringRedisSerializer = new StringRedisSerializer();
//        //定义RedisTemplate，并设置连接工程[修改为：工厂]
//        RedisTemplate redisTemplate = new RedisTemplate();
//        redisTemplate.setConnectionFactory(connectionFactory);
//        //设置序列化器
//        redisTemplate.setDefaultSerializer(stringRedisSerializer);
//        redisTemplate.setKeySerializer(stringRedisSerializer);
//        redisTemplate.setValueSerializer(stringRedisSerializer);
//        redisTemplate.setHashKeySerializer(stringRedisSerializer);
//        redisTemplate.setHashValueSerializer(stringRedisSerializer);
//        return redisTemplate;
//    }
    
}