springboot集成druid連接池

使用druid連接池主要有幾步：

1、添加jar和依賴

	<groupId>org.mybatis.spring.boot</groupId>
		<artifactId>mybatis-spring-boot-starter</artifactId>
		<version>1.3.2</version>
	</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>6.0.4</version>
		</dependency>

		<dependency>
			<groupId>com.google.guava</groupId>
			<artifactId>guava</artifactId>
			<version>18.0</version>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<version>1.16.20</version>
			<scope>provided</scope>
		</dependency>
		<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>1.1.9</version>
		</dependency>

2、配置文件：

server:
  port: 1111
spring:
  application:
    name: springboothouse
  druid:
    druidClassName: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/houseselling?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
    username: root
    password: *****
#最大連接數
    maxActive: 30
#最小連接數
    minIdle: 5
#獲取連接的最大等待時間
    maxWait: 10000
#解決mysql8小時的問題
    validationgQuery: SELECT 'X'
#空閑連接的檢查時間間隔
    timeBetweenEvictionRunsMillis: 60000
#空閑連接最小空閑時間
    minEvictableIdleTimeMillis: 300000

3、配置連接池的監控和慢sql處理

連接池的監控連接：

http://ip:port/ 項目名/druid/或http://ip:port/ 項目名/druid/index.html即可訪問 

 

package com.house.sell.config;

import com.alibaba.druid.filter.Filter;
import com.alibaba.druid.filter.stat.StatFilter;
import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.google.common.collect.Lists;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.sql.DataSource;

/**
 *druid連接池的配置,配置如何處理慢sql，
 */
@Configuration
public class DruidConfig {
    //這個注解讀取配置文件前綴為prefix的配置，將外部的配置文件與這里綁定
    @ConfigurationProperties(prefix = "spring.druid")
    //容器的開啟與關閉
    @Bean(initMethod = "init",destroyMethod = "close")
    public DruidDataSource dataSource(){
        DruidDataSource dataSource=new DruidDataSource();
        dataSource.setProxyFilters(Lists.newArrayList(statFilter()));
        return  dataSource;
    }
//bean注解，成為spring的bean，利用filter將慢sql的日志打印出來
    @Bean
    public Filter statFilter(){
        StatFilter statFilter=new StatFilter();
        //多長時間定義為慢sql，這里定義為5s
        statFilter.setSlowSqlMillis(5000);
        //是否打印出慢日志
        statFilter.setLogSlowSql(true);
        //是否將日志合並起來
        statFilter.setMergeSql(true);
        return  statFilter;
    }
    //這是配置druid的監控
    @Bean
    public ServletRegistrationBean servletRegistrationBean(){
        return new ServletRegistrationBean(new StatViewServlet(),"/druid/*");
    }

}