Spring Boot使用Druid进行维度的统计和监控

2019-11-26 12:25:41

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Druid

Druid：一款为监控而生的数据库连接池框架，整个项目由数据库连接池、插件框架和SQL解析器组成。

Druid功能介于PowerDrill和Dremel之间，它几乎实现了Dremel的所有功能，并且从PowerDrill吸收一些有趣的数据格式。Druid允许以类似Dremel和PowerDrill的方式进行单表查询，同时还增加了一些新特性，如为局部嵌套数据结构提供列式存储格式、为快速过滤做索引、实时摄取和查询、高容错的分布式体系架构等。

Spring Boot

spring框架作为JavaEE框架领域的一款重要的开源框架，在企业应用开发中有着很重要的作用，同时Spring框架及其子框架很多，所以知识量很广。

Spring Boot：一款Spring框架的子框架，也可以叫微框架，是2014年推出的一款使Spring框架开发变得容易的框架。学过Spring框架的都知识，Spring框架难以避免地需要配置不少XMl，而使用Spring Boot框架的话，就可以使用注解开发，极大地简化基于Spring框架的开发。

Spring Boot充分利用了JavaConfig的配置模式以及“约定优于配置”的理念，能够极大的简化基于Spring MVC的Web应用和REST服务开发。

然后通过本文给大家介绍基于IDEA编辑器的Spring Boot项目创建和部署。

Spring Boot使用Druid监控

maven配置

要配置spring Boot实现一个Demo的话，只要加入spring-boot-starter（核心模块）和spring-boot-starter-web（因为这个一个Web项目），可以参考我的配置，这里使用了Spring Boot热部署，需要去github上搜索jar：springloaded-1.2.4.RELEASE.jar，然后下载放在项目的lib文件夹里，可以参考我的配置

<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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.example</groupId> <artifactId>demo</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>demo Maven Webapp</name> <properties>  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  <java.version>1.8</java.version>  <druid.version>1.0.24</druid.version>  <mysql.version>5.1.27</mysql.version>  <spring-boot-admin.version>1.4.5</spring-boot-admin.version> </properties> <parent>  <groupId>org.springframework.boot</groupId>  <artifactId>spring-boot-starter-parent</artifactId>  <version>1.5.1.RELEASE</version>  <relativePath/> </parent> <dependencies>  <dependency>   <groupId>junit</groupId>   <artifactId>junit</artifactId>   <version>3.8.1</version>   <scope>test</scope>  </dependency>  <dependency>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter-web</artifactId>  </dependency>  <dependency>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter-actuator</artifactId>  </dependency>  <dependency>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter-test</artifactId>   <scope>test</scope>  </dependency>  <dependency>   <groupId>de.codecentric</groupId>   <artifactId>spring-boot-admin-starter-client</artifactId>   <version>${spring-boot-admin.version}</version>  </dependency>  <dependency>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter</artifactId>  </dependency>  <dependency>   <groupId>com.alibaba</groupId>   <artifactId>druid</artifactId>   <version>${druid.version}</version>  </dependency>  <dependency>   <groupId>mysql</groupId>   <artifactId>mysql-connector-java</artifactId>   <version>${mysql.version}</version>  </dependency> </dependencies> <build>  <plugins>   <plugin>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-maven-plugin</artifactId>   </plugin>   <plugin>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-maven-plugin </artifactId>    <dependencies>     <!--springloaded hot deploy -->     <dependency>      <groupId>org.springframework</groupId>      <artifactId>springloaded</artifactId>      <systemPath>${basedir}/src/main/webapp/WEB-INF/lib/springloaded-1.2.5.RELEASE.jar</systemPath>     </dependency>    </dependencies>    <executions>     <execution>      <goals>       <goal>repackage</goal>      </goals>      <configuration>       <classifier>exec</classifier>      </configuration>     </execution>    </executions>   </plugin>  </plugins> </build></project>

application.properties配置

server.context-path=/springbootdemo#数据库访问配置spring.datasource.type=com.alibaba.druid.pool.DruidDataSourcespring.datasource.driver-class-name=com.mysql.jdbc.Driverspring.datasource.url=jdbc:mysql://localhost:3306/myblogspring.datasource.username=rootspring.datasource.password=root#数据源配置，初始化大小、最小、最大spring.datasource.initialSize=5spring.datasource.minIdle=5spring.datasource.maxActive=20#连接等待超时时间spring.datasource.maxWait=60000#配置隔多久进行一次检测(检测可以关闭的空闲连接)spring.datasource.timeBetweenEvictionRunsMillis=60000#配置连接在池中的最小生存时间spring.datasource.minEvictableIdleTimeMillis=300000spring.datasource.validationQuery=SELECT 1 FROM DUALspring.datasource.testWhileIdle=truespring.datasource.testOnBorrow=falsespring.datasource.testOnReturn=false# 打开PSCache，并且指定每个连接上PSCache的大小spring.datasource.poolPreparedStatements=truespring.datasource.maxPoolPreparedStatementPerConnectionSize=20# 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# 通过connectProperties属性来打开mergeSql功能；慢SQL记录spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000

方式一原生的servlet和filter方式

编写Servlet类：

package com.example.web.servlet;import com.alibaba.druid.support.http.StatViewServlet;import javax.servlet.annotation.WebInitParam;import javax.servlet.annotation.WebServlet;/** * Created by Administrator on 2017/4/28. */@WebServlet(urlPatterns = "/druid/*",    initParams = {        @WebInitParam(name = "allow", value = "192.168.10.25,127.0.0.1"),// IP白名单 (没有配置或者为空，则允许所有访问)        @WebInitParam(name = "deny", value = "192.168.1.73"),// IP黑名单 (存在共同时，deny优先于allow)        @WebInitParam(name = "loginUsername", value = "admin"),// 用户名        @WebInitParam(name = "loginPassword", value = "123"),// 密码        @WebInitParam(name = "resetEnable", value = "false")// 禁用HTML页面上的“Reset All”功能)    })public class DruidStatViewServlet extends StatViewServlet{}

Filter类：

package com.example.web.filter;import com.alibaba.druid.support.http.WebStatFilter;import javax.servlet.annotation.WebFilter;import javax.servlet.annotation.WebInitParam;/** * Created by Administrator on 2017/4/28. */@WebFilter(filterName="druidWebStatFilter",urlPatterns="/*",    initParams={        @WebInitParam(name="exclusions",value="*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*")// 忽略资源    })public class DruidWebStatFilter extends WebStatFilter{}

然后，需要在Spring Boot启动类里设置Servlet自动扫描，不然会出现404页面找不到错误，使用

@ServletComponentScan注解

package com;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.boot.builder.SpringApplicationBuilder;import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;import org.springframework.boot.web.servlet.ServletComponentScan;import org.springframework.boot.web.support.SpringBootServletInitializer;import org.springframework.scheduling.annotation.EnableAsync;@SpringBootApplication@ServletComponentScan@EnableAsyncpublic class Application implements EmbeddedServletContainerCustomizer {  public static void main(String[] args) {    SpringApplication.run(Application.class, args);  }  @Override  public void customize(ConfigurableEmbeddedServletContainer configurableEmbeddedServletContainer) {    configurableEmbeddedServletContainer.setPort(8087);  }}

方式二使用代码注册Servlet和Filter

package com.example.config;import com.alibaba.druid.support.http.StatViewServlet;import com.alibaba.druid.support.http.WebStatFilter;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;/** * Created by Administrator on 2017/4/28. */@Configurationpublic class DruidConfiguration {  /**   * 注册ServletRegistrationBean   * @return   */  @Bean  public ServletRegistrationBean registrationBean() {    ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(), "/druid1/*");    /** 初始化参数配置，initParams**/    //白名单    bean.addInitParameter("allow", "127.0.0.1");    //IP黑名单 (存在共同时，deny优先于allow) : 如果满足deny的话提示:Sorry, you are not permitted to view this page.    bean.addInitParameter("deny", "192.168.1.73");    //登录查看信息的账号密码.    bean.addInitParameter("loginUsername", "admin2");    bean.addInitParameter("loginPassword", "123");    //是否能够重置数据.    bean.addInitParameter("resetEnable", "false");    return bean;  }  /**   * 注册FilterRegistrationBean   * @return   */  @Bean  public FilterRegistrationBean druidStatFilter() {    FilterRegistrationBean bean = new FilterRegistrationBean(new WebStatFilter());    //添加过滤规则.    bean.addUrlPatterns("/*");    //添加不需要忽略的格式信息.    bean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid2/*");    return bean;  }}

项目监控

然后输入url访问，我的项目访问路径：http://localhost:8087/springbootdemo/druid/login.html，这个需要自己修改，我的Context配置为springbootdemo，端口配置为8087，这些可以参考我上一篇博客

这里写图片描述