首先了解一下,什么是Druid.
Druid是Java语言中最好的数据库连接池,它能够提供强大的监控和扩展功能。 Druid是一个JDBC组件,它包括三部分: 1)DruidDriver 代理Driver,能够提供基于Filter-Chain模式的插件体系。 2)DruidDataSource 高效可管理的数据库连接池。 3)SQLParser Druid可以做什么呢,官网做了一下解释:1) 可以监控数据库访问性能,Druid内置提供了一个功能强大的StatFilter插件,能够详细统计SQL的执行性能,这对于线上分析数据库访问性能有帮助。 2) 替换DBCP和C3P0。Druid提供了一个高效、功能强大、可扩展性好的数据库连接池。 3) 数据库密码加密。直接把数据库密码写在配置文件中,这是不好的行为,容易导致安全问题。DruidDruiver和DruidDataSource都支持PasswordCallback。 4) SQL执行日志,Druid提供了不同的LogFilter,能够支持Common-Logging、Log4j和JdkLog,你可以按需要选择相应的LogFilter,监控你应用的数据库访问情况。 接下来就开始我们的正题,Druid在SpringMVC中的配置与使用.============================分割线================================ 1. 首先从 http://repo1.maven.org/maven2/com/alibaba/druid/ 下载最新的jar包,然后导到项目之中. 2.配置ApplicationContext.xml< bean name = "transactionManager" class ="org.springframework.jdbc.datasource.DataSourceTransactionManager" > < property name = "dataSource" ref = "dataSource" ></ property > </ bean > < bean id = "propertyConfigurer" class ="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" > < property name = "locations" > < list > < value > /WEB-INF/classes/dbconfig.properties </ value > </ list > </ property > </ bean > <!-- 阿里 druid 数据库连接池 --> < bean id = "dataSource" class = "com.alibaba.druid.pool.DruidDataSource"destroy-method = "close" > <!-- 数据库基本信息配置 --> < property name = "url" value = "${url}" /> < property name = "username" value = "${username}" /> < property name = "password" value = "${password}" /> < property name = "driverClassName" value = "${driverClassName}" /> < property name = "filters" value = "${filters}" /> <!-- 最大并发连接数 --> < property name = "maxActive" value = "${maxActive}" /> <!-- 初始化连接数量 --> < property name = "initialSize" value = "${initialSize}" /> <!-- 配置获取连接等待超时的时间 --> < property name = "maxWait" value = "${maxWait}" /> <!-- 最小空闲连接数 --> < property name = "minIdle" value = "${minIdle}" /> <!-- 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 --> < property name = "timeBetweenEvictionRunsMillis" value ="${timeBetweenEvictionRunsMillis}" /> <!-- 配置一个连接在池中最小生存的时间,单位是毫秒 --> < property name = "minEvictableIdleTimeMillis" value ="${minEvictableIdleTimeMillis}" /> < property name = "validationQuery" value = "${validationQuery}" /> < property name = "testWhileIdle" value = "${testWhileIdle}" /> < property name = "testOnBorrow" value = "${testOnBorrow}" /> < property name = "testOnReturn" value = "${testOnReturn}" /> < property name = "maxOpenPreparedStatements" value ="${maxOpenPreparedStatements}" /> <!-- 打开 removeAbandoned 功能 --> < property name = "removeAbandoned" value = "${removeAbandoned}" /> <!-- 1800 秒,也就是 30 分钟 --> < property name = "removeAbandonedTimeout" value ="${removeAbandonedTimeout}" /> <!-- 关闭 abanded 连接时输出错误日志 --> < property name = "logAbandoned" value = "${logAbandoned}" /> </ bean >3.添加dbconfig.propertiesurl:jdbc:mysql://60.205.106.190:3306/oasis_mom(你的项目的地址)driverClassName: com.MySQL.jdbc.Driverusername: root(项目数据库名称)password: root(项目数据库密码)filters: statmaxActive: 20initialSize: 1maxWait: 60000minIdle: 10maxIdle: 15timeBetweenEvictionRunsMillis: 60000minEvictableIdleTimeMillis: 300000validationQuery: SELECT 'x'testWhileIdle: truetestOnBorrow: falsetestOnReturn: falsemaxOpenPreparedStatements: 20removeAbandoned: trueremoveAbandonedTimeout: 1800logAbandoned: true4.配置web.xml <!-- 连接池 启用 Web 监控统计功能 start--> < filter > < filter-name > DruidWebStatFilter </ filter-name > < filter-class > com.alibaba.druid.support.http.WebStatFilter </ filter-class > < init-param > < param-name > exclusions </ param-name > < param-value > *. js ,*. gif ,*. jpg ,*. png ,*. css ,*. ico ,/ druid /* </ param-value > </ init-param > </ filter > < filter-mapping > < filter-name > DruidWebStatFilter </ filter-name > < url-pattern > /* </ url-pattern > </ filter-mapping > < servlet > < servlet-name > DruidStatView </ servlet-name > < servlet-class > com.alibaba.druid.support.http.StatViewServlet </ servlet-class > </ servlet > < servlet-mapping > < servlet-name > DruidStatView </ servlet-name > < url-pattern > / druid /* </ url-pattern > </ servlet-mapping ><!-- 连接池 启用 Web 监控统计功能 end-->5.配置完毕,访问监控页面: http://ip:port/projectName/druid/index.html(http://test.cn/honghclient/druid/weburi.html)进行访问