Spring Boot（二十四）：springBoot集成Druid

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介绍

Druid为监控而生的数据库连接池，主要功能对比：

Druid BoneCP DBCP C3P0 Proxool JBoss Tomcat-Jdbc
LUR √ √ √ √ ？
PSCache √ √ √ √ √
PSCache-Oracle-Optimized √
ExceptionSorter √ √
更新维护 √ ？ √

文档

pom文件引入：

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<dependency>
	<groupId>com.alibaba</groupId>
	<artifactId>druid</artifactId>
	<version>1.0.26</version>
</dependency>

Druid配置：

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@Configuration
public class DruidConfiguration {
	
    @ConditionalOnClass(DruidDataSource.class)
    @ConditionalOnProperty(name = "spring.datasource.type", havingValue = "com.alibaba.druid.pool.DruidDataSource", matchIfMissing = true)
    static class Druid extends DruidConfiguration {
        @Bean
        @ConfigurationProperties("spring.datasource.druid")
        public DruidDataSource dataSource(DataSourceProperties properties) {
            DruidDataSource druidDataSource = (DruidDataSource) properties.initializeDataSourceBuilder().type(DruidDataSource.class).build();
            DatabaseDriver databaseDriver = DatabaseDriver.fromJdbcUrl(properties.determineUrl());
            String validationQuery = databaseDriver.getValidationQuery();
            if (validationQuery != null) {
                druidDataSource.setValidationQuery(validationQuery);
            }
            return druidDataSource;
        }
	}
}

监控：

  1. 配置servlet

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    @WebServlet(urlPatterns = { "/druid/*" }, initParams = { @WebInitParam(name = "loginUsername", value = "dodd"), @WebInitParam(name = "loginPassword", value = "dodd") })
    public class DruidStatViewServlet extends StatViewServlet {
    	private static final long serialVersionUID = 1L;
    }

  2. filter

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    @WebFilter(filterName = "druidWebStatFilter", urlPatterns = "/*", initParams = { @WebInitParam(name = "exclusions", value = "*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*") })
    public class DruidWebStatFilter extends WebStatFilter {
        
    }

配置文件：

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# mysql
spring.datasource.url=
spring.datasource.username=
spring.datasource.password=
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
#spring.datasource.type=org.apache.tomcat.jdbc.pool.DataSource
#初始化连接大小
spring.datasource.druid.initial-size=8
#最小空闲连接数
spring.datasource.druid.min-idle=5
#最大连接数
spring.datasource.druid.max-active=10
#查询超时时间
spring.datasource.druid.query-timeout=6000
#事务查询超时时间
spring.datasource.druid.transaction-query-timeout=6000
#关闭空闲连接超时时间
spring.datasource.druid.remove-abandoned-timeout=1800

测试：http://localhost:8080/druid/index.html

sql监控配置：

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#filter类名:stat,config,encoding,logging
spring.datasource.druid.filter-class-names=stat
spring.datasource.druid.filters=stat,config

spring监控配置：

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@ImportResource(locations = { "classpath:druid-bean.xml" })

  • druid-bean.xml

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    <?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
    	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    	xsi:schemaLocation="
            http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans.xsd
    		http://www.springframework.org/schema/aop
    		http://www.springframework.org/schema/aop/spring-aop.xsd">

    	<!-- 配置_Druid和Spring关联监控配置 -->
    	<bean id="druid-stat-interceptor"
    		class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor"></bean>

    	<!-- 方法名正则匹配拦截配置 -->
    	<bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut"
    		scope="prototype">
    		<property name="patterns">
    			<list>
    				<value>com.dodd.mapper.*</value>
    			</list>
    		</property>
    	</bean>

    	<aop:config proxy-target-class="true">
    		<aop:advisor advice-ref="druid-stat-interceptor"
    			pointcut-ref="druid-stat-pointcut" />
    	</aop:config>

    </beans>