使用Druid作为SpringBoot项目数据源(添加监控)
Druid是一个关系型数据库连接池,它是阿里巴巴的一个开源项目。Druid支持所有JDBC兼容数据库,包括了Oracle、MySQL、PostgreSQL、SQL Server、H2等。
Druid在监控、可扩展性、稳定性和性能方面具有明显的优势。通过Druid提供的监控功能,可以实时观察数据库连接池和SQL查询的工作情况。使用Druid连接池在一定程度上可以提高数据访问效率。
Druid在监控、可扩展性、稳定性和性能方面具有明显的优势。通过Druid提供的监控功能,可以实时观察数据库连接池和SQL查询的工作情况。使用Druid连接池在一定程度上可以提高数据访问效率。
链接:https://www.jianshu.com/p/e84e2709f383
application.yml
spring: datasource: url: jdbc:mysql://localhost:3306/mstest?useUnicode=true&characterEncoding=utf-8 driverClassName: com.mysql.jdbc.Driver username: root password: 123qwe #最大活跃数 maxActive: 20 #初始化数量 initialSize: 1 #最大连接等待超时时间 maxWait: 60000 #打开PSCache,并且指定每个连接PSCache的大小 poolPreparedStatements: true maxPoolPreparedStatementPerConnectionSize: 20 #通过connectionProperties属性来打开mergeSql功能;慢SQL记录 #connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000 minIdle: 1 timeBetweenEvictionRunsMillis: 60000 minEvictableIdleTimeMillis: 300000 validationQuery: select 1 from dual testWhileIdle: true testOnBorrow: false testOnReturn: false #配置监控统计拦截的filters,去掉后监控界面sql将无法统计,'wall'用于防火墙 filters: stat, wall, log4j jpa: database: MySQL show-sql: true hibernate: naming_strategy: org.hibernate.cfg.ImprovedNamingStrategy
2.DruidConfiguration.java
实现Druid的访问Servlet以及Filter
package com.example.demo; 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; /** * Created by 20160216 on 2018/2/8. */ @Configuration public class DruidConfiguration { @Bean public ServletRegistrationBean statViewServlet(){ //创建servlet注册实体 ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*"); //设置ip白名单 servletRegistrationBean.addInitParameter("allow","127.0.0.1"); //设置ip黑名单,如果allow与deny共同存在时,deny优先于allow servletRegistrationBean.addInitParameter("deny","192.168.0.19"); //设置控制台管理用户 servletRegistrationBean.addInitParameter("loginUsername","druid"); servletRegistrationBean.addInitParameter("loginPassword","123456"); //是否可以重置数据 servletRegistrationBean.addInitParameter("resetEnable","false"); return servletRegistrationBean; } @Bean public FilterRegistrationBean statFilter(){ //创建过滤器 FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter()); //设置过滤器过滤路径 filterRegistrationBean.addUrlPatterns("/*"); //忽略过滤的形式 filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*"); return filterRegistrationBean; } @Bean @ConfigurationProperties(prefix = "spring.datasource") public DataSource druidDataSource(){ return new DruidDataSource(); } }
3.pom.xml
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.example</groupId> <artifactId>less03</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <name>less03</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.10.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</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-tomcat</artifactId> <!--<scope>provided</scope>--> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.29</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>
4.登录
127.0.0.1:8080/druid/login.html
5.监控
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