springboot 集成 druid 阿里的数据库连接池

短命女 2022-12-05 15:28 241阅读 0赞

1.配置pom

<dependency>
    			<groupId>com.alibaba</groupId>
    			<artifactId>druid</artifactId>
    			<version>1.1.12</version>
    			<exclusions>  
    		        <exclusion>  
    		            <groupId>com.alibaba</groupId>  
    		            <artifactId>jconsole</artifactId>  
    		        </exclusion>  
    		        <exclusion>  
    		            <groupId>com.alibaba</groupId>  
    		            <artifactId>tools</artifactId>  
    		        </exclusion>  
    		    </exclusions>
    		</dependency>

2.配置 application.properties

#druid连接池
    spring.datasource.type: com.alibaba.druid.pool.DruidDataSource
    #最大活跃数
    spring.datasource.maxActive: 20
    #初始化数量
    spring.datasource.initialSize: 1
    #最大连接等待超时时间
    spring.datasource.maxWait: 60000
    #打开PSCache，并且指定每个连接PSCache的大小
    spring.datasource.poolPreparedStatements: true
    spring.datasource.maxPoolPreparedStatementPerConnectionSize: 20
    #通过connectionProperties属性来打开mergeSql功能；慢SQL记录
    #connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
    spring.datasource.minIdle: 1
    spring.datasource.timeBetweenEvictionRunsMillis: 60000
    spring.datasource.minEvictableIdleTimeMillis: 300000
    spring.datasource.validationQuery: select 1 from dual
    spring.datasource.testWhileIdle: true
    spring.datasource.testOnBorrow: false
    spring.datasource.testOnReturn: false
    #配置监控统计拦截的filters，去掉后监控界面sql将无法统计,'wall'用于防火墙
    filters: stat, wall, log4j

3.Config配置类

/**
     * 说明：第一数据源配置
     * 作者：FH
     * 官网：www.fhamdin.org
     */
    @Configuration
    @MapperScan(basePackages = MasterDataSourceConfig.PACKAGE, sqlSessionFactoryRef = "masterSqlSessionFactory") //扫描 Mapper 接口并容器管理
    public class MasterDataSourceConfig {
    
        static final String PACKAGE = "org.fh.mapper.dsno1";								//master 目录
        static final String MAPPER_LOCATION = "classpath:mybatis/dsno1/*/*.xml";			//扫描的 xml 目录
        static final String CONFIG_LOCATION = "classpath:mybatis/dsno1/mybatis-config.xml"; //自定义的mybatis config 文件位置
        static final String TYPE_ALIASES_PACKAGE = "org.fh.entity"; 						//扫描的 实体类 目录
     
        @Value("${datasource.no1.url}")
        private String url;
     
        @Value("${datasource.no1.username}")
        private String user;
     
        @Value("${datasource.no1.password}")
        private String password;
     
        @Value("${datasource.no1.driver-class-name}")
        private String driverClass;
     
        @Bean(name = "masterDataSource")
        @Primary
        public DataSource masterDataSource() {
            DruidDataSource dataSource = new DruidDataSource();
            dataSource.setDriverClassName(driverClass);
            dataSource.setUrl(url);
            dataSource.setUsername(user);
            dataSource.setPassword(password);
            return dataSource;
        }
     
        @Bean(name = "masterTransactionManager")
        @Primary
        public DataSourceTransactionManager masterTransactionManager() {
            return new DataSourceTransactionManager(masterDataSource());
        }
     
        @Bean(name = "masterSqlSessionFactory")
        @Primary
        public SqlSessionFactory masterSqlSessionFactory(@Qualifier("masterDataSource") DataSource masterDataSource)throws Exception {
            final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
            sessionFactory.setDataSource(masterDataSource);
            sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(MasterDataSourceConfig.MAPPER_LOCATION));
            sessionFactory.setConfigLocation(new DefaultResourceLoader().getResource(MasterDataSourceConfig.CONFIG_LOCATION));
            sessionFactory.setTypeAliasesPackage(MasterDataSourceConfig.TYPE_ALIASES_PACKAGE);
            return sessionFactory.getObject();
        }
    }