SpringBoot整合Druid数据库连接池
1、pom文件添加依赖:
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.10</version>
</dependency>
2、application.yum添加相关配置信息
spring
datasource:
driver-class-name:com.mysql.jdbc.driver
url:jdbc:mysql://localhost:3306/test
username:root
password:root
type: com.alibaba.druid.pool.DruidDataSource
druid:
filters:stat #配置扩展插件,常用的插件有=>stat:监控统计 log4j:日志 wall:防御sql注入
maxActive:20 #最大连接池数量
initialSize: 10 #初始化连接大小
maxWait: 60000 #获取连接时最大等待时间,单位毫秒
minIdle: 1 #最小连接池数量
timeBetweenEvictionRunsMillis: 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
minEvictableIdleTimeMillis: 30000 #配置一个连接在池中最小生存的时间,单位是毫秒
validationQuery: select 'x' #测试连接
testWhileIdle: true #申请连接的时候检测
testOnBorrow: false #获取连接时执行检测
testOnReturn: false #归还连接时执行检测
poolPreparedStatements: true #是否开启PSCache
maxOpenPreparedStatments: 20
maxPoolPreparedStatementPerConnectionSize: 20 #开启poolPreparedStatements后生效
connectionProperties: 'druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000' #通过connectProperties属性来打开mergeSql功能;慢SQL记录
3、添加配置类:
import java.sql.SQLException;
import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.embedded.FilterRegistrationBean;
import org.springframework.boot.context.embedded.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
@Configuration
public class DruidConfiguration {
@Value("${spring.datasource.url}")
private String url;
@Value("${spring.datasource.username}")
private String username;
@Value("${spring.datasource.password}")
private String password;
@Value("${spring.datasource.driver-class-name}")
private String driverClassName;
@Value("${spring.druid.initialSize}")
private int initialSize;
@Value("${spring.druid.minIdle}")
private int minIdle;
@Value("${spring.druid.maxActive}")
private int maxActive;
@Value("${spring.druid.maxWait}")
private int maxWait;
@Value("${spring.druid.timeBetweenEvictionRunsMillis}")
private int timeBetweenEvictionRunsMillis;
@Value("${spring.druid.minEvictableIdleTimeMillis}")
private int minEvictableIdleTimeMillis;
@Value("${spring.druid.validationQuery}")
private String validationQuery;
@Value("${spring.druid.testWhileIdle}")
private boolean testWhileIdle;
@Value("${spring.druid.testOnBorrow}")
private boolean testOnBorrow;
@Value("${spring.druid.testOnReturn}")
private boolean testOnReturn;
@Value("${spring.druid.poolPreparedStatements}")
private boolean poolPreparedStatements;
@Value("${spring.druid.maxPoolPreparedStatementPerConnectionSize}")
private int maxPoolPreparedStatementPerConnectionSize;
@Value("${spring.druid.filters}")
private String filters;
@Value("{spring.druid.connectionProperties}")
private String connectionProperties;
@Bean
@Primary
public DataSource dataSource() {
DruidDataSource datasource = new DruidDataSource();
datasource.setUrl(url);
datasource.setUsername(username);
datasource.setPassword(password);
datasource.setDriverClassName(driverClassName);
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) {
}
datasource.setConnectionProperties(connectionProperties);
return datasource;
}
@Bean
public ServletRegistrationBean statViewServlet(){
ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*");
servletRegistrationBean.addInitParameter("allow","127.0.0.1"); //设置ip白名单
//servletRegistrationBean.addInitParameter("deny","x.x.x.x");//设置ip黑名单,优先级高于白名单
//设置控制台管理用户
servletRegistrationBean.addInitParameter("loginUsername","root");
servletRegistrationBean.addInitParameter("loginPassword","root");
//是否可以重置数据
servletRegistrationBean.addInitParameter("resetEnable","false");
return servletRegistrationBean;
}
@Bean
public FilterRegistrationBean statFilter(){
//创建过滤器
FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());
//设置过滤器过滤路径
filterRegistrationBean.addUrlPatterns("/*");
//忽略过滤的形式
filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
return filterRegistrationBean;
}
}
4、测试
浏览器输入:localhost:9999/druid/index.html
效果如图:
用户名和密码去DruidConfiguration类的statViewServlet中查看。