Druid是阿里巴巴开源的数据库连接池,号称是Java语言中最好的数据库连接池,能够提供强大的监控和扩展功能。GitHub地址:https://github.com/alibaba/druid。
首先,使用工具:
1.data jpa
2.druid
3.spring boot 2.1.0
首先写配置文件,这里我这里使用的时application.properties
# datasource
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
spring.datasource.url = jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC&useSSL=true
spring.datasource.username=root
spring.datasource.password=
# 下面为连接池的补充设置,应用到上面所有数据源中
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
# 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
spring.datasource.logSlowSql=true
由于spring boot默认是不支持Druid的,所以需要配置一下
首先实例化Durid DataSource,这里采用注解的方式。
@Configuration
@Primary
public class DruidDataSourceConfig{
@Bean(name = "springDruidDataSource")
@ConfigurationProperties("spring.datasource") // 该注解可以自动注入对象的属性(对应配置文件spring.datasource下的属性)
public DruidDataSource newsPoiDataSource() {
return new DruidDataSource();
}
}
接下来配置监控器,过滤不需要监控的视图,配置监控视图。
@Configuration
public class DruidConfiguration {
private static final Logger logger = LoggerFactory.getLogger(DruidConfiguration.class);
@Bean
@SuppressWarnings({ "rawtypes", "unchecked" })
public ServletRegistrationBean druidServlet() {
logger.info("init Druid Servlet Configuration ");
ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),
"/druid/*");
// IP白名单
servletRegistrationBean.addInitParameter("allow", "");
// 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", "admin");
servletRegistrationBean.addInitParameter("loginPassword", "admin");
// 是否能够重置数据 禁用HTML页面上的“Reset All”功能
servletRegistrationBean.addInitParameter("resetEnable", "false");
return servletRegistrationBean;
}
@SuppressWarnings({ "rawtypes", "unchecked" })
@Bean
public FilterRegistrationBean filterRegistrationBean() {
FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());
filterRegistrationBean.addUrlPatterns("/*");
filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
return filterRegistrationBean;
}
xml依赖:
<!-- 添加druid依赖 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.10</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!-- 添加data jpa依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- 添加mysql依赖 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>