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
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<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
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server.context-path=/springbootdemo #数据库访问配置 spring.datasource.type=com.alibaba.druid.pool.DruidDataSource spring.datasource.driver- class -name=com.mysql.jdbc.Driver spring.datasource.url=jdbc:mysql: //localhost:3306/myblog spring.datasource.username=root spring.datasource.password=root #数据源配置,初始化大小、最小、最大 spring.datasource.initialSize= 5 spring.datasource.minIdle= 5 spring.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= 300000 spring.datasource.validationQuery=SELECT 1 FROM DUAL spring.datasource.testWhileIdle= true spring.datasource.testOnBorrow= false spring.datasource.testOnReturn= false # 打开PSCache,并且指定每个连接上PSCache的大小 spring.datasource.poolPreparedStatements= true spring.datasource.maxPoolPreparedStatementPerConnectionSize= 20 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:
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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:
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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
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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 @EnableAsync public 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
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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. */ @Configuration public 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
通过平台进行监控
以上所述是小编给大家介绍的Spring Boot使用Druid进行维度的统计和监控,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持!
原文链接:http://blog.csdn.net/u014427391/article/details/70890506