SpringBoot集成Druid实现监控

application.properties文件完整信息

#连接数据库
spring.datasource.driver-class-name=org.mariadb.jdbc.Driver
spring.datasource.url=jdbc:mariadb://localhost:3306/empDB
spring.datasource.username=oukele
spring.datasource.password=oukele

#连接池
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
#初始化 、最小、最大
spring.datasource.initialSize = 5
spring.datasource.minIdle = 1
spring.datasource.maxActive = 20
#设置获取超时等待的时间
spring.datasource.maxWait = 60000
#配置一个连接在池中最小生存时间，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,logback

创一个 DruidConfig类

package com.nf.pro_emp.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.boot.context.properties.ConfigurationProperties;
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 javax.sql.DataSource;
import java.sql.SQLException;

/**
 * @author OUKELE
 * @create 2019-03-22 11:27
 */

@Configuration
@ConfigurationProperties(prefix = "spring.datasource")//读取 application.properties里的内容
public class DruidConfig {

    //数据库 url
    private String url;
    //数据库用户名
    private String username;
    //数据库登陆密码
    private String password;
    //最大的连接数量
    private int maxActive;
    //初始化大小
    private int initialSize;
    // 设置 超时的等待时间
    private int maxWait;
    //最小的连接数量
    private int minIdle;
    //监控统计拦截的filters，如果去掉后监控界面sql将无法统计
    private String filters;

    public String getFilters() {
        return filters;
    }

    public void setFilters(String filters) {
        this.filters = filters;
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public int getMaxActive() {
        return maxActive;
    }

    public void setMaxActive(int maxActive) {
        this.maxActive = maxActive;
    }

    public int getInitialSize() {
        return initialSize;
    }

    public void setInitialSize(int initialSize) {
        this.initialSize = initialSize;
    }

    public int getMaxWait() {
        return maxWait;
    }

    public void setMaxWait(int maxWait) {
        this.maxWait = maxWait;
    }

    public int getMinIdle() {
        return minIdle;
    }

    public void setMinIdle(int minIdle) {
        this.minIdle = minIdle;
    }

    //注册 Servlet 组件
    @Bean
    public ServletRegistrationBean statViewServlet(){
        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
        /*servletRegistrationBean.addInitParameter("allow", "192.168.1.3"); //白名单IP*/
        servletRegistrationBean.addInitParameter("loginUsername", "oukele");
        servletRegistrationBean.addInitParameter("loginPassword", "oukele");
        return servletRegistrationBean;
    }

    // 注册 Filter 组件
    @Bean
    public FilterRegistrationBean statFilter(){
        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());
        //验证所有请求
        filterRegistrationBean.addUrlPatterns("/*");
        //对 *.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/* 不进行验证
        filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
        return filterRegistrationBean;
    }

    //配置数据源
    @Bean
    public DataSource dataSource() {
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setDriverClassName("org.mariadb.jdbc.Driver");
        dataSource.setUrl(url);
        dataSource.setUsername(username);
        dataSource.setPassword(password);
        dataSource.setMaxActive(maxActive);
        dataSource.setInitialSize(initialSize);
        try {
            dataSource.setFilters(filters);
        } catch (SQLException e) {
            //do nothing
        }
        dataSource.setMaxWait(maxWait);
        dataSource.setMinIdle(minIdle);
        return dataSource;
    }
}

重启项目，浏览器输入 http://localhost:8888/druid/login.html

演示项目地址：https://github.com/oukele/springboot-druid