124 lines
4.7 KiB
Java
124 lines
4.7 KiB
Java
package com.nbclass.szxgl.config;
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import com.alibaba.druid.pool.DruidDataSource;
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import lombok.Data;
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import org.apache.ibatis.session.SqlSessionFactory;
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import org.mybatis.spring.SqlSessionFactoryBean;
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import org.mybatis.spring.annotation.MapperScan;
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import org.springframework.beans.factory.annotation.Qualifier;
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import org.springframework.boot.context.properties.ConfigurationProperties;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.context.annotation.Primary;
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import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
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import org.springframework.jdbc.datasource.DataSourceTransactionManager;
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import javax.sql.DataSource;
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import java.sql.SQLException;
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/**
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* @Description: 主数据源配置类
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* 前缀为primary.datasource.druid的配置信息
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*/
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@Data
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@Configuration
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@ConfigurationProperties(prefix = "primary.datasource.druid")
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@MapperScan(basePackages = PrimaryDataBaseConfig.PACKAGE, sqlSessionFactoryRef = "primarySqlSessionFactory")
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public class PrimaryDataBaseConfig {
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/**
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* dao层的包路径
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*/
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static final String PACKAGE = "com.nbclass.szxgl.mapper";
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/**
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* mapper文件的相对路径
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*/
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private static final String MAPPER_LOCATION = "classpath*:mapper/szxgl/*.xml";
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private String filters;
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private String url;
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private String username;
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private String password;
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private String driverClassName;
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private int initialSize;
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private int minIdle;
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private int maxActive;
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private long maxWait;
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private long timeBetweenEvictionRunsMillis;
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private long minEvictableIdleTimeMillis;
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private String validationQuery;
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private boolean testWhileIdle;
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private boolean testOnBorrow;
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private boolean testOnReturn;
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private boolean poolPreparedStatements;
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private int maxPoolPreparedStatementPerConnectionSize;
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/**
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* 主数据源使用@Primary注解进行标识
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*/
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@Primary
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@Bean(name = "primaryDataSource")
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public DataSource primaryDataSource() throws SQLException {
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DruidDataSource druid = new DruidDataSource();
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// 监控统计拦截的filters
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druid.setFilters(filters);
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// 配置基本属性
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druid.setDriverClassName(driverClassName);
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druid.setUsername(username);
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druid.setPassword(password);
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druid.setUrl(url);
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//初始化时建立物理连接的个数
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druid.setInitialSize(initialSize);
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//最大连接池数量
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druid.setMaxActive(maxActive);
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//最小连接池数量
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druid.setMinIdle(minIdle);
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//获取连接时最大等待时间，单位毫秒。
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druid.setMaxWait(maxWait);
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//间隔多久进行一次检测，检测需要关闭的空闲连接
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druid.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
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//一个连接在池中最小生存的时间
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druid.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
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//用来检测连接是否有效的sql
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druid.setValidationQuery(validationQuery);
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//建议配置为true，不影响性能，并且保证安全性。
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druid.setTestWhileIdle(testWhileIdle);
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//申请连接时执行validationQuery检测连接是否有效
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druid.setTestOnBorrow(testOnBorrow);
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druid.setTestOnReturn(testOnReturn);
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//是否缓存preparedStatement，也就是PSCache，oracle设为true，mysql设为false。分库分表较多推荐设置为false
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druid.setPoolPreparedStatements(poolPreparedStatements);
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// 打开PSCache时，指定每个连接上PSCache的大小
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druid.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
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return druid;
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}
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/**
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* 创建该数据源的事务管理
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*/
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@Primary
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@Bean(name = "primaryTransactionManager")
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public DataSourceTransactionManager primaryTransactionManager() throws SQLException {
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return new DataSourceTransactionManager(primaryDataSource());
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}
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/**
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* 创建Mybatis的连接会话工厂实例
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*/
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@Primary
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@Bean(name = "primarySqlSessionFactory")
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public SqlSessionFactory primarySqlSessionFactory(@Qualifier("primaryDataSource") DataSource primaryDataSource) throws Exception {
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final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
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sessionFactory.setDataSource(primaryDataSource); // 设置数据源bean
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sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
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.getResources(PrimaryDataBaseConfig.MAPPER_LOCATION)); // 设置mapper文件路径
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return sessionFactory.getObject();
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}
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}
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