SpringBoot连接池+druid的配置及监控

1.引入pom文件

<!-- mysql-connector-java MySQL数据库 -->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>6.0.6</version>
</dependency>

<!-- druid数据库 -->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.1.10</version>
</dependency>

<!-- log4j -->
<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>

2.application.properties

### druid setting mysql6.0.6:serverTimezone=UTC ###
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.url=jdbc:mysql://localhost:3306/gg_travel?serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=123456
### 不支持的补充配置 ###
spring.datasource.driverClassName=com.mysql.jdbc.Driver
# 初始化大小，最小，最大
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
# 配置一个连接在池中最小生存的时间，单位是毫秒
spring.datasource.validationQuery=SELECT 1 FROM DUAL
spring.datasource.testOnBorrow=false
spring.datasource.testOnReturn=false
spring.datasource.testWhileIdle=true
spring.datasource.minEvictableIdleTimeMillis=25200000
# 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
spring.datasource.removeAbandoned=true
spring.datasource.removeAbandonedTimeout=1800
# 打开PSCache，并且指定每个连接上PSCache的大小
spring.datasource.poolPreparedStatements=true
spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
spring.datasource.logAbandoned=true
# 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

# mybatis配置mapper扫描和别名扫描
mybatis.mapper-locations=classpath:mapper/*.xml

3. DruidDBConfig类

package com.sjx.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;

import javax.sql.DataSource;
import java.sql.SQLException;

@SuppressWarnings("all")
@Configuration
public class DruidDBConfig {
    private static final Logger log = LoggerFactory.getLogger(DruidDBConfig.class);

    @Value("${spring.datasource.url}")
    private String dbUrl;

    @Value("${spring.datasource.username}")
    private String username;

    @Value("${spring.datasource.password}")
    private String password;

    @Value("${spring.datasource.driverClassName}")
    private String driverClassName;

    @Value("${spring.datasource.initialSize}")
    private int initialSize;

    @Value("${spring.datasource.minIdle}")
    private int minIdle;

    @Value("${spring.datasource.maxActive}")
    private int maxActive;

    @Value("${spring.datasource.maxWait}")
    private int maxWait;

    @Value("${spring.datasource.timeBetweenEvictionRunsMillis}")
    private int timeBetweenEvictionRunsMillis;

    @Value("${spring.datasource.minEvictableIdleTimeMillis}")
    private int minEvictableIdleTimeMillis;

    @Value("${spring.datasource.validationQuery}")
    private String validationQuery;

    @Value("${spring.datasource.testWhileIdle}")
    private boolean testWhileIdle;

    @Value("${spring.datasource.testOnBorrow}")
    private boolean testOnBorrow;

    @Value("${spring.datasource.testOnReturn}")
    private boolean testOnReturn;

    @Value("${spring.datasource.poolPreparedStatements}")
    private boolean poolPreparedStatements;

    @Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize}")
    private int maxPoolPreparedStatementPerConnectionSize;

    @Value("${spring.datasource.filters}")
    private String filters;

    @Value("{spring.datasource.connectionProperties}")
    private String connectionProperties;

    @Bean(initMethod = "init", destroyMethod = "close")
    @Primary
    public DataSource dataSource() {
        DruidDataSource datasource = new DruidDataSource();

        datasource.setUrl(this.dbUrl);
        datasource.setUsername(username);
        datasource.setPassword(password);
        datasource.setDriverClassName(driverClassName);

        /** configuration */
        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) {
            log.error("druid configuration initialization filter", e);
        }
        datasource.setConnectionProperties(connectionProperties);
        return datasource;
    }

    /**
     * http://127.0.0.1:8090/druid/login.html
     *
     * @throws
     * @Title: druidServlet
     * @Description: 注册一个StatViewServlet 相当于在web.xml中声明了一个servlet
     * @param: void
     * @return: ServletRegistrationBean
     */
    @Bean
    public ServletRegistrationBean druidServlet() {
        ServletRegistrationBean reg = new ServletRegistrationBean();
        reg.setServlet(new StatViewServlet());
        reg.addUrlMappings("/druid/*");
        /** 白名单 */
        reg.addInitParameter("allow", "127.0.0.1,115.192.17.238");
        /** IP黑名单(共同存在时，deny优先于allow) */
        // reg.addInitParameter("deny", "192.168.2.105");
        /** /druid/login.html登录时账号密码 */
        reg.addInitParameter("loginUsername", "root");
        reg.addInitParameter("loginPassword", "root");
        /** 是否能够重置数据 禁用HTML页面上的“Reset All”功能 */
        reg.addInitParameter("resetEnable", "false");
        return reg;
    }

    /**
     * 注册一个：filterRegistrationBean 相当于在web.xml中声明了一个Filter
     */
    @Bean
    public FilterRegistrationBean druidStatFilter() {
        FilterRegistrationBean druidStatFilter = new FilterRegistrationBean();
        druidStatFilter.setFilter(new WebStatFilter());
        /** 添加过滤规则. */
        druidStatFilter.addUrlPatterns("/*");
        /** 监控选项滤器 */
        druidStatFilter.addInitParameter("DruidWebStatFilter", "/*");
        /** 添加不需要忽略的格式信息. */
        druidStatFilter.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,*.htm,/druid/*");
        /** 配置profileEnable能够监控单个url调用的sql列表 */
        druidStatFilter.addInitParameter("profileEnable", "true");
        /** 当前的cookie的用户 */
        druidStatFilter.addInitParameter("principalCookieName", "USER_COOKIE");
        /** 当前的session的用户 */
        druidStatFilter.addInitParameter("principalSessionName", "USER_SESSION");
        return druidStatFilter;
    }
}

4、测试
浏览器输入http://127.0.0.1:8080/druid/index.html 根据设置的账号密码 (root  root) 进行登录

就可以了看到Druid Index控制台了