springboot整合druid数据源并开启druid后台监控

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别团等shy哥发育 发表于 2023/02/04 16:53:46 2023/02/04
【摘要】 @toc 1、引入依赖pom.xml文件：<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http:...

@toc

1、引入依赖

pom.xml文件：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.5</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.atguigu</groupId>
    <artifactId>springboot-06-data-jdbc</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springboot-06-data-jdbc</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!--引入druid数据源-->
        <!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.17</version>
        </dependency>


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



    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

2、application.yml文件：

spring:
  datasource:
    #数据库基本配置
    username: root
    password: 123456
    url: jdbc:mysql://192.168.56.101:3306/jdbc
    driver-class-name: com.mysql.cj.jdbc.Driver
    initialization-mode: always
    type: com.alibaba.druid.pool.DruidDataSource
    #其他配置
    initialSize: 5
    minIdle: 5
    maxActive: 20
    maxWait: 60000
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    poolPreparedStatements: 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
    filters: stat,wall,log4j
    maxPoolPreparedStatementPerConnectionSize: 20
    useGlobalDataSourceStat: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
#    schema:
#      - classpath:department.sql

3、编写配置文件：

1、SprinbBoot1.x版本

package com.atguigu.springboot.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import jdk.nashorn.internal.ir.ReturnNode;
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.util.Arrays;
import java.util.HashMap;
import java.util.Map;

@Configuration
public class DruidConfig {
    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druid(){
        return new DruidDataSource();
    }
    //配置Druid监控
    /**
     * 1、配置管理后台的Servlet
     * 2、配置一个Web监控的filter
     */
    //配置一个管理后台的Servlet
    @Bean
    public ServletRegistrationBean<StatViewServlet> statViewServlet(){
        ServletRegistrationBean<StatViewServlet> bean = new ServletRegistrationBean<>(new StatViewServlet(), "/druid/*");
        Map<String,String> initParams=new HashMap<>();
        //增加配置
        initParams.put("loginUsername","admin");//登录key 固定的loginUsername
        initParams.put("loginPassword","123456");//登录密码 固定loginPassword
        initParams.put("allow",""); //允许谁可以访问，默认都可访问
        initParams.put("deny","172.16.208.208");//禁止谁能访问
        
        bean.setInitParameters(initParams); //初始化参数
        return bean;
    }
    //配置一个Web监控的filter
    @Bean
    public FilterRegistrationBean webStatFilter(){
        FilterRegistrationBean bean = new FilterRegistrationBean();
        bean.setFilter(new WebStatFilter());

        Map<String,String> initParams = new HashMap<>();
        initParams.put("exclusions","*.css,*.png,*.jpg,*.js,/druid/*");

        bean.setInitParameters(initParams);

        bean.setUrlPatterns(Arrays.asList("/*"));
        bean.setInitParameters(initParams);
        return  bean;


    }
    
}

2、SpringBoot2.x版本：

package com.atguigu.springboot.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.util.Arrays;
import java.util.HashMap;
import java.util.Map;

@Configuration
public class DruidConfig {
    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druid(){
        return new DruidDataSource();
    }
    //配置Druid监控
    /**
     * 1、配置管理后台的Servlet
     * 2、配置一个Web监控的filter
     */
    //配置一个管理后台的Servlet
    @Bean
    public ServletRegistrationBean<StatViewServlet> statViewServlet(){
        ServletRegistrationBean<StatViewServlet> servletServletRegistrationBean = new ServletRegistrationBean<>(new StatViewServlet(), "/druid/*");
//        Map<String,String> initParams=new HashMap<>();
        //增加配置
//        initParams.put("loginUsername","admin");//登录key 固定的loginUsername
//        initParams.put("loginPassword","123456");//登录密码 固定loginPassword
//        initParams.put("allow",""); //允许谁可以访问，默认都可访问
//        initParams.put("deny","172.16.208.208");//禁止谁能访问
        
        //bean.setInitParameters(initParams); //初始化参数
        servletServletRegistrationBean.addInitParameter("loginUsername","admin");
        servletServletRegistrationBean.addInitParameter("loginPassword","123456");
        servletServletRegistrationBean.addInitParameter("allow","");
        servletServletRegistrationBean.addInitParameter("deny","172.16.208.208");
        return servletServletRegistrationBean;
    }
    //配置一个Web监控的filter
    @Bean
    public FilterRegistrationBean<WebStatFilter> webStatFilter(){
        FilterRegistrationBean<WebStatFilter> bean = new FilterRegistrationBean<>();
        bean.setFilter(new WebStatFilter());
        Map<String,String> initParams = new HashMap<>();
        initParams.put("exclusions","*.css,*.png,*.jpg,*.js,/druid/*");
        bean.setInitParameters(initParams);
        bean.setUrlPatterns(Arrays.asList("/*"));
        bean.setInitParameters(initParams);
        //添加过滤规则
//        filterRegistrationBean.addUrlPatterns("/*");
        //添加不需要忽略的格式信息
//        filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
        return  bean;
    }
    
}

4、运行测试

4.1 访问:http://localhost:8080/druid

在这里插入图片描述

4.2 输入代码里面写的admin和123456

在这里插入图片描述
在这里插入图片描述

4.3 写个controller测试:

package com.atguigu.springboot.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.List;
import java.util.Map;

@Controller
public class HelloController {
    @Autowired
    JdbcTemplate jdbcTemplate;
    @RequestMapping("/query")
    @ResponseBody
    public Map<String,Object> map(){
        List<Map<String, Object>> list = jdbcTemplate.queryForList("select * from department");
        return list.get(0);
    }
}

4.4 访问：http://localhost:8080/query

在这里插入图片描述

4.5 再次查看druid的SQL监控：(可以看到刚才查询的SQL了)

在这里插入图片描述

ps:数据库表结构：

/*
Navicat MySQL Data Transfer

Source Server         : 本地
Source Server Version : 50528
Source Host           : 127.0.0.1:3306
Source Database       : restful_crud

Target Server Type    : MYSQL
Target Server Version : 50528
File Encoding         : 65001

Date: 2018-03-05 10:41:58
*/

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------
-- Table structure for employee
-- ----------------------------
DROP TABLE IF EXISTS `employee`;
CREATE TABLE `employee` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `lastName` varchar(255) DEFAULT NULL,
  `email` varchar(255) DEFAULT NULL,
  `gender` int(2) DEFAULT NULL,
  `d_id` int(11) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

在这里插入图片描述

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