SpringBoot 2.1.1.RELEASE 集成Druid

SpringBoot 2.1.1.RELEASE 集成Druid
詳情：
http://www.qchcloud.cn/system/article/show/68
配置依賴：

<!-- Mysql驅動包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!-- druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.4</version>
</dependency>

配置applicaton.properties

spring.datasource.driverClassName = com.mysql.cj.jdbc.Driver
spring.datasource.url = jdbc:mysql://localhost:3306/iot?useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC
spring.datasource.username = root
spring.datasource.password = 1234

log4j配置

logging.config=classpath:log4j2.xml

數據源類別

spring.datasource.type=com.alibaba.druid.pool.DruidDataSource

初始化大小，最小，最大

spring.datasource.initialSize=5
spring.datasource.minIdle=5
spring.datasource.maxActive=20

配置獲取連接等待超時的時間，單位是毫秒

spring.datasource.maxWait=60000

配置間隔多久才進行一次檢測，檢測需要關閉的空閑連接，單位是毫秒

spring.datasource.timeBetweenEvictionRunsMillis=60000

配置一個連接在池中最小生存的時間，單位是毫秒

spring.datasource.minEvictableIdleTimeMillis=300000
spring.datasource.validationQuery=SELECT 1 FROM DUAL
spring.datasource.testWhileIdle=true
spring.datasource.testOnBorrow=false
spring.datasource.testOnReturn=false

打開PSCache，并且指定每個連接上PSCache的大小

spring.datasource.poolPreparedStatements=true
spring.datasource.maxPoolPreparedStatementPerConnectionSize=20

配置監控統計攔截的filters，去掉后監控界面sql無法統計，'wall'用于防火墻

spring.datasource.filters=stat,wall,log4j

通過connectProperties屬性來打開mergeSql功能；慢SQL記錄

spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000

合并多個DruidDataSource的監控數據

#spring.datasource.useGlobalDataSourceStat=true
配置監控：

@Configuration
public class DruidConfiguration {

    @Bean
    public ServletRegistrationBean druidStatViewServle(){
        //ServletRegistrationBean提供類的進行注冊.
        ServletRegistrationBean servletRegistrationBean
                = new ServletRegistrationBean(new StatViewServlet(),"/druid/*");
        //添加初始化參數：initParams
        //白名單：
        servletRegistrationBean.addInitParameter("allow","127.0.0.1");
        //IP黑名單 (存在共同時，deny優先于allow)
        // 如果滿足deny的話提示:Sorry, you are not permitted to view this page.
        servletRegistrationBean.addInitParameter("deny","192.168.1.7");
        //登錄查看信息的賬號和密碼.
        servletRegistrationBean.addInitParameter("loginUsername","admin");
        servletRegistrationBean.addInitParameter("loginPassword","123456");
        //是否能夠重置數據.
        servletRegistrationBean.addInitParameter("resetEnable","false");
        return servletRegistrationBean;
    }

    @Bean
    public FilterRegistrationBean druidStatFilter(){
        FilterRegistrationBean filterRegistrationBean
                = new FilterRegistrationBean(new WebStatFilter());
        //添加過濾規則.
        filterRegistrationBean.addUrlPatterns("/*");
        //添加不需要忽略的格式信息.
        filterRegistrationBean.addInitParameter("exclusions",
                "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
        return filterRegistrationBean;
    }

}