druid是java语言中最好的数据库连接池，并且能够提供强大的监控和扩展功能，下面来说明如何在 springboot 中配置使用druid。
步骤：
1. 在pom.xml中加载依赖
2. 在application.properties中加入数据源配置
3. 编写druidconfiguration，通过@bean注解的方式注入druid servlet和filter，以便提供监控页面访问
4. 浏览器访问
一、在pom.xml中加入依赖
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<dependency> <groupid>com.alibaba</groupid> <artifactid>druid</artifactid> <version>1.0.18</version> </dependency> |
二、在application.properties中加入数据源配置
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################## server ################################ server.port=8080 ################## datasource ################################ spring.datasource.url = jdbc:mysql://localhost:3306/spring spring.datasource.username = root spring.datasource.password = 123456spring.datasource.driverclassname = com.mysql.jdbc.driver #使用druid数据源 spring.datasource.type=com.alibaba.druid.pool.druiddatasource # 下面为连接池的补充设置，应用到上面所有数据源中 # 初始化大小，最小，最大 spring.datasource.initialsize=5spring.datasource.minidle=5spring.datasource.maxactive=20 # 配置获取连接等待超时的时间 spring.datasource.maxwait=60000 # 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 spring.datasource.timebetweenevictionrunsmillis=60000 # 配置一个连接在池中最小生存的时间，单位是毫秒 spring.datasource.minevictableidletimemillis=300000spring.datasource.validationquery=select 1 fromdual spring.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 # 合并多个druiddatasource的监控数据 #spring.datasource.useglobaldatasourcestat=true ################ java persistence api ########################### # specify the dbms spring.jpa.database = mysql # show or not log for each sql query spring.jpa.show-sql = true# hibernate ddl auto (create, create-drop, update) spring.jpa.hibernate.ddl-auto = update #[org.hibernate.cfg.improvednamingstrategy #org.hibernate.cfg.defaultnamingstrategy] spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.improvednamingstrategy # stripped before adding them to the entity manager) spring.jpa.properties.hibernate.dialect= org.hibernate.dialect.mysql5dialect #暂时不用redis，所以none，spring.session.store-type=reids spring.session.store-type=none |
以上是我项目中的配置信息，大家只要关注datasource部分即可。
三、编写druidconfiguration配置类，通过@bean注解的方式注入druid servlet和filter，以便提供监控页面访问
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package com.example.config; import java.sql.sqlexception; import javax.sql.datasource; import org.slf4j.logger; import org.slf4j.loggerfactory; import org.springframework.beans.factory.annotation.value; 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 com.alibaba.druid.pool.druiddatasource; import com.alibaba.druid.support.http.statviewservlet; import com.alibaba.druid.support.http.webstatfilter; /** * 配置druid数据源 * */@configurationpublic class druidconfiguration { private logger logger = loggerfactory.getlogger(druidconfiguration.class); @bean public servletregistrationbean druidstatviewservlet() { servletregistrationbean registrationbean = new servletregistrationbean(new statviewservlet(), "/druid/*"); registrationbean.addinitparameter("allow", "127.0.0.1"); registrationbean.addinitparameter("deny", "192.168.31.234"); registrationbean.addinitparameter("loginusername", "admin"); registrationbean.addinitparameter("loginpassword", "123456"); registrationbean.addinitparameter("resetenable", "false"); return registrationbean; } @bean public filterregistrationbean druidwebstatviewfilter() { filterregistrationbean registrationbean = new filterregistrationbean(new webstatfilter()); registrationbean.addinitparameter("urlpatterns", "/*"); registrationbean.addinitparameter("exclusions", "*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*"); return registrationbean; } @bean public datasource druiddatasource(@value("${spring.datasource.url}") string url, @value("${spring.datasource.driverclassname}") string driver, @value("${spring.datasource.username}") string username, @value("${spring.datasource.password}") string password, @value("${spring.datasource.maxactive}") int maxactive, @value("${spring.datasource.filters}") string filters, @value("${spring.datasource.initialsize}") int initialsize, @value("${spring.datasource.minidle}") int minidle, @value("${spring.datasource.maxwait}") int maxwait, @value("${spring.datasource.timebetweenevictionrunsmillis}") int timebetweenevictionrunsmillis, @value("${spring.datasource.minevictableidletimemillis}") int minevictableidletimemillis, @value("${spring.datasource.validationquery}") string validationquery, @value("${spring.datasource.testwhileidle}") boolean testwhileidle, @value("${spring.datasource.testonborrow}") boolean testonborrow, @value("${spring.datasource.testonreturn}") boolean testonreturn, @value("${spring.datasource.poolpreparedstatements}") boolean poolpreparedstatements, @value("${spring.datasource.maxpoolpreparedstatementperconnectionsize}") int maxpoolpreparedstatementperconnectionsize, @value("${spring.datasource.connectionproperties}") string connectionproperties, @value("${spring.datasource.useglobaldatasourcestat}") boolean useglobaldatasourcestat ) { druiddatasource datasource = new druiddatasource(); /*数据源主要配置*/ datasource.seturl(url); datasource.setdriverclassname(driver); datasource.setusername(username); datasource.setpassword(password); /*数据源补充配置*/ datasource.setmaxactive(maxactive); datasource.setinitialsize(initialsize); datasource.setminidle(minidle); datasource.setmaxwait(maxwait); datasource.settimebetweenevictionrunsmillis(timebetweenevictionrunsmillis); datasource.setminevictableidletimemillis(minevictableidletimemillis); datasource.setvalidationquery(validationquery); datasource.settestonborrow(testonborrow); datasource.settestonreturn(testonreturn); datasource.settestwhileidle(testwhileidle); datasource.setpoolpreparedstatements(poolpreparedstatements); datasource.setmaxpoolpreparedstatementperconnectionsize(maxpoolpreparedstatementperconnectionsize); datasource.setconnectionproperties(connectionproperties); datasource.setuseglobaldatasourcestat(useglobaldatasourcestat); try { datasource.setfilters(filters); logger.info("druid数据源初始化设置成功......"); } catch (sqlexception e) { e.printstacktrace(); logger.info("druid数据源filters设置失败......"); } return datasource; } } |
四、浏览器访问
在浏览器中输入http://localhost:8080/druid/index.html，首次访问需要使用账号和密码登录
在数据源一栏中，所有加"*"标识的都不能为空，，尤其是filter类名，否则会看不到sql监控数据。
五、查看sql监控
执行删除某条记录后，查看sql监控
到这里，我们就把druid配置成功了。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://blog.csdn.net/linabc123000/article/details/69062204
