SpringBoot

springboot 集成 druid

2017-05-26  本文已影响225人  灰气球

SpringBoot整合Druid完成MySQL数据访问,以及配置Druid监控模块整合。

  1. 添加Druid依赖

    <!--alibaba druid datasource-->
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid</artifactId>
        <version>${alibaba-druid.version}</version>
    </dependency>
    
  2. 添加配置

    # DataSource settings
    spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
    spring.datasource.url = jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF8
    spring.datasource.username = root
    spring.datasource.password = root
    spring.datasource.driverClassName = com.mysql.jdbc.Driver
    #连接池的配置信息
    spring.datasource.initialSize=5
    spring.datasource.minIdle=5
    spring.datasource.maxActive=20
    # 配置获取连接等待超时的时间
    spring.datasource.maxWait=60000
    # 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒
    spring.datasource.timeBetweenEvictionRunsMillis=60000
    # 配置一个连接在池中最小生存的时间,单位是毫秒
    spring.datasource.minEvictableIdleTimeMillis=300000
    spring.datasource.validationQuery=SELECT 1 FROM DUAL
    spring.datasource.testWhileIdle=true
    spring.datasource.testOnBorrow=false
    spring.datasource.testOnReturn=false
    # 打开PSCache,并且指定每个连接上PSCache的大小
    spring.datasource.poolPreparedStatements=true
    spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
    # 配置监控统计拦截的filters,去掉后监控界面sql无法统计,'wall'用于防火墙
    spring.datasource.filters=stat,wall,log4j
    # 通过connectProperties属性来打开mergeSql功能;慢SQL记录
    spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
    
  3. 启动项目,此时,SpringBoot已经把Druid当做dataSource加载到了项目中了

  4. 开启Druid监控功能

    开启监控功能,可以在应用运行的过程中,通过监控提供的多维度数据来分析使用数据库的运行情况,从而可以调整程序设计,以便于优化数据库的访问性能。

    @Configuration
    public class DruidConfiguration {
        @Value("${spring.datasource.url}")
        private String dbUrl;
        @Value("${spring.datasource.username}")
        private String username;
        @Value("${spring.datasource.password}")
        private String password;
        @Value("${spring.datasource.driver-class-name}")
        private String driverClassName;
        @Value("${spring.datasource.initialSize}")
        private int initialSize;
        @Value("${spring.datasource.minIdle}")
        private int minIdle;
        @Value("${spring.datasource.maxActive}")
        private int maxActive;
        @Value("${spring.datasource.maxWait}")
        private int maxWait;
        @Value("${spring.datasource.timeBetweenEvictionRunsMillis}")
        private int timeBetweenEvictionRunsMillis;
        @Value("${spring.datasource.minEvictableIdleTimeMillis}")
        private int minEvictableIdleTimeMillis;
        @Value("${spring.datasource.validationQuery}")
        private String validationQuery;
        @Value("${spring.datasource.testWhileIdle}")
        private boolean testWhileIdle;
        @Value("${spring.datasource.testOnBorrow}")
        private boolean testOnBorrow;
        @Value("${spring.datasource.testOnReturn}")
        private boolean testOnReturn;
        @Value("${spring.datasource.poolPreparedStatements}")
        private boolean poolPreparedStatements;
        @Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize}")
        private int maxPoolPreparedStatementPerConnectionSize;
        @Value("${spring.datasource.filters}")
        private String filters;
        @Value("{spring.datasource.connectionProperties}")
        private String connectionProperties;
    
        @Bean     //声明其为Bean实例
        @Primary  //在同样的DataSource中,首先使用被标注的DataSource
        public DataSource dataSource() {
            DruidDataSource datasource = new DruidDataSource();
            datasource.setUrl(this.dbUrl);
            datasource.setUsername(username);
            datasource.setPassword(password);
            datasource.setDriverClassName(driverClassName);
    
            //configuration
            datasource.setInitialSize(initialSize);
            datasource.setMinIdle(minIdle);
            datasource.setMaxActive(maxActive);
            datasource.setMaxWait(maxWait);
            datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
            datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
            datasource.setValidationQuery(validationQuery);
            datasource.setTestWhileIdle(testWhileIdle);
            datasource.setTestOnBorrow(testOnBorrow);
            datasource.setTestOnReturn(testOnReturn);
            datasource.setPoolPreparedStatements(poolPreparedStatements);
            datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
            try {
                datasource.setFilters(filters);
            } catch (SQLException e) {
                System.err.println("druid configuration initialization filter: " + e);
            }
            datasource.setConnectionProperties(connectionProperties);
            return datasource;
        }
    
        @Bean
        public ServletRegistrationBean statViewServle() {
            ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
            // IP白名单
            servletRegistrationBean.addInitParameter("allow", "127.0.0.1");
            // IP黑名单(共同存在时,deny优先于allow)
            servletRegistrationBean.addInitParameter("deny", "192.168.1.100");
            //控制台管理用户
            servletRegistrationBean.addInitParameter("loginUsername", "druid");
            servletRegistrationBean.addInitParameter("loginPassword", "druid");
            //是否能够重置数据
            servletRegistrationBean.addInitParameter("resetEnable", "false");
            return servletRegistrationBean;
        }
    
        @Bean
        public FilterRegistrationBean statFilter() {
            FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());
            //添加过滤规则
            filterRegistrationBean.addUrlPatterns("/*");
            //忽略过滤的格式
            filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
            return filterRegistrationBean;
        }
    }
    
  5. 重启项目,访问 项目链接+/druid/login.html

    登陆页面 管理页面
  6. 相关信息

    https://github.com/alibaba/druid

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