一、JDBC
Jar依赖：
org.springframework.boot
spring-boot-starter-jdbc
mysql
mysql-connector-java
数据源的相关参数配置：DataSourceProperties
application.properties：
spring.datasource.url=jdbc:mysql://localhost:3306/arch1
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.username=root
spring.datasource.password=123456
默认是用org.apache.tomcat.jdbc.pool.DataSource作为数据源
二、Druid DataSource
引入Jar依赖：
com.alibaba
druid
1.1.10
application-dev.properties
spring.datasource.url=jdbc:mysql://localhost:3306/arch1
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.username=root
spring.datasource.password=123456########################## druid配置 ##########################
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
# 初始化大小，最小，最大
spring.datasource.initialSize=5spring.datasource.minIdle=5spring.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# 校验SQL，Oracle配置 spring.datasource.validationQuery=SELECT 1FROM DUAL，如果不配validationQuery项，则下面三项配置无用
spring.datasource.validationQuery=SELECT 'x'spring.datasource.testWhileIdle=truespring.datasource.testOnBorrow=falsespring.datasource.testOnReturn=false# 打开PSCache，并且指定每个连接上PSCache的大小
spring.datasource.poolPreparedStatements=truespring.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# 合并多个DruidDataSource的监控数据
spring.datasource.useGlobalDataSourceStat=true
为了使spring.datasource.initialSize、spring.datasource.minIdle等属性生效，可以使用ConfigurationProperties(prefix="spring.datasource")引入
配置类DruidConfig
1 @Configuration2 public classDruidConfig {3
4 @Bean5 @ConfigurationProperties(prefix="spring.datasource")6 publicDataSource druidDataSource(){7 return newDruidDataSource();8 }9
10 @Bean11 publicServletRegistrationBean startViewServlet(){12 ServletRegistrationBean druidServlet =new ServletRegistrationBean(new StatViewServlet(),"/druid/*");13
14 Map initParams =new HashMap();15 initParams.put("loginUsername", "root");16 initParams.put("loginPassword", "root");17
18 initParams.put("allow","");//默认就是允许
19 initParams.put("deny","192.168.15.21");20
21 druidServlet.setInitParameters(initParams);22
23 returndruidServlet;24 }25
26 @Bean27 publicFilterRegistrationBean webStatFilter(){28 FilterRegistrationBean filter =newFilterRegistrationBean();29 filter.setFilter(newWebStatFilter());30
31 Map initParams = new HashMap<>();32 initParams.put("exclusions","*.js,*.css,/druid/*");33 filter.setInitParameters(initParams);34 filter.setUrlPatterns(Arrays.asList("/*"));35
36 returnfilter;37 }38
39
40
41 }
监控测试：
