SpringBoot：数据访问-整合 Druid 配置数据源监控-编程知识

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简介

Druid Spring Boot Starter 用于帮助你在Spring Boot项目中轻松集成Druid数据库连接池和监控。

一、添加druid-spring-boot-starter依赖

点击查询最新版

<dependency><groupId>com.alibaba</groupId><artifactId>druid-spring-boot-starter</artifactId><version>1.2.18</version>
</dependency>

二、配置属性

application.yml代码

spring:datasource:username: rootpassword: 123456url: jdbc:mysql://192.168.0.102:3307/dbjdbcdriver-class-name: com.mysql.cj.jdbc.Drivertype: com.alibaba.druid.pool.DruidDataSourceinitialSize: 5minIdle: 5maxActive: 20maxWait: 60000timeBetweenEvictionRunsMillis: 60000minEvictableIdleTimeMillis: 300000validationQuery: SELECT 1 FROM DUALtestWhileIdle: truetestOnBorrow: falsetestOnReturn: falsepoolPreparedStatements: 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,log4j2maxPoolPreparedStatementPerConnectionSize: 20useGlobalDataSourceStat: trueconnectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500# mybatis
mybatis:# 指定全局配置文件位置config-location: classpath:mybatis/mybatis-config.xml# 指定sql映射文件位置mapper-locations: classpath:mybatis/mapper/*.xml#    表创建好了，将下面代码注释掉
#  sql:
#    init:
#      username: root
#      password: 123456
#      mode: always
#      schema-locations:
#        - classpath*:sql/schema.sql
#      data-locations:
#        - classpath*:sql/schema-data.sql# Spring Boot 之五：Spring 属性配置 https://www.jianshu.com/p/cfeae8c1b8dd# Springboot 2.5.x初始化执行sql文件配置 https://blog.csdn.net/qq_24258617/article/details/120272350# 查看源码 DataSourceProperties  DataSourceConfiguration

DruidConfig.java代码

package com.example.learnspringboot06datajdbc.config;import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.jakarta.StatViewServlet;
import com.alibaba.druid.support.jakarta.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 java.util.Arrays;
import java.util.HashMap;
import java.util.Map;@Configuration
public class DruidConfig {@ConfigurationProperties(prefix = "spring.datasource")@Beanpublic DruidDataSource druidDataSource(){return new DruidDataSource();}//配置Druid的监控//1、配置一个管理后台的Servlet// 运行起来之后 打开 http://localhost:8082/druid/login.html@Beanpublic ServletRegistrationBean servletRegistrationBean(){ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");Map<String,String> initParams = new HashMap<>();initParams.put("loginUsername","admin");initParams.put("loginPassword","123456");initParams.put("allow","");//默认就是允许所有访问initParams.put("deny","192.168.0.104");//设置黑名单bean.setInitParameters(initParams);return bean;}//2、配置一个web监控的filter@Beanpublic FilterRegistrationBean webStatFilter(){FilterRegistrationBean bean = new FilterRegistrationBean();bean.setFilter(new WebStatFilter());Map<String,String> initParams = new HashMap<>();initParams.put("exclusions","*.js,*.css,/druid/*");bean.setInitParameters(initParams);bean.setUrlPatterns(Arrays.asList("/*"));return  bean;}
}

pom.xml代码

<?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>3.1.1</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.example</groupId><artifactId>LearnSpringBoot06DataJdbc</artifactId><version>0.0.1-SNAPSHOT</version><name>LearnSpringBoot06DataJdbc</name><description>LearnSpringBoot06DataJdbc</description><properties><java.version>17</java.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-jdbc</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>com.mysql</groupId><artifactId>mysql-connector-j</artifactId><!--【问题解决】Springboot3.0.3+找不到MySQL驱动https://blog.csdn.net/qq_39320261/article/details/129394183https://blog.csdn.net/ZHENFENGSHISAN/article/details/130992615--><scope>runtime</scope></dependency><!--   引入自定义的数据源 https://mvnrepository.com/artifact/com.alibaba/druid -->
<!--        <dependency>-->
<!--            <groupId>com.alibaba</groupId>-->
<!--            <artifactId>druid</artifactId>-->
<!--            <version>1.1.22</version>-->
<!--        </dependency>--><!--        https://mvnrepository.com/artifact/com.alibaba/druid-spring-boot-starter --><dependency><groupId>com.alibaba</groupId><artifactId>druid-spring-boot-starter</artifactId><version>1.2.18</version></dependency><!--SpringBoot 整合 durid数据库连接池https://blog.csdn.net/qq_45315910/article/details/94736535这里 注释掉，不用再添加依赖了，查看pom文件的依赖关系图，已经依赖 slf4j 了-->
<!--        <dependency>-->
<!--            <groupId>org.slf4j</groupId>-->
<!--            <artifactId>slf4j-log4j12</artifactId>-->
<!--        </dependency>--><!--使用 log4j2 记录日志原文链接：https://blog.csdn.net/m0_71777195/article/details/126053802这里 注释掉，不用再添加依赖了，查看pom文件的依赖关系图，已经依赖 slf4j 了-->
<!--        <dependency>-->
<!--            <groupId>org.springframework.boot</groupId>-->
<!--            <artifactId>spring-boot-starter-log4j2</artifactId>-->
<!--        </dependency>--><!--        https://blog.csdn.net/weixin_37799575/article/details/125102566 -->
<!--        <dependency>-->
<!--            <groupId>com.alibaba</groupId>-->
<!--            <artifactId>druid-spring-boot-starter</artifactId>-->
<!--            <version>1.1.22</version>-->
<!--        </dependency>--><!-- mybatis https://mvnrepository.com/artifact/org.mybatis.spring.boot/mybatis-spring-boot-starter --><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>3.0.2</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>