druid是阿里巴巴开源平台上一个数据库连接池实现，它结合了c3p0、dbcp、proxool等db池的优点，同时加入了日志监控，可以很好的监控db池连接和sql的执行情况，可以说是针对监控而生的db连接池(据说是目前最好的连接池)
一、依赖
为了测试，使用jdbctemplate
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<!-- jdbctemplate --><dependency> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-jdbc</artifactid></dependency><!-- druid数据库连接池 --><dependency> <groupid>com.alibaba</groupid> <artifactid>druid</artifactid> <version>1.0.26</version></dependency><!-- mysql connector --><dependency> <groupid>mysql</groupid> <artifactid>mysql-connector-java</artifactid> <scope>runtime</scope></dependency> |
二、druid配置
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druid.properties#数据库设置spring.datasource.driverclassname=com.mysql.jdbc.driverspring.datasource.url=jdbc:mysql://localhost:3306/uu_core?useunicode=true&characterencoding=utf8&autoreconnect=true&usessl=truespring.datasource.username=rootspring.datasource.password=root#--------------------------# 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=1spring.datasource.maxactive=50# 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 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=false#spring.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 |
三、实例化druid datasource
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package cn.aduu.config;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 org.springframework.context.annotation.propertysource;import javax.sql.datasource;/** * @author zh * @classname cn.aduu.config.druidconfiguration * @description */@configuration@propertysource(value = "classpath:druid.properties")public class druidconfiguration { @bean(destroymethod = "close", initmethod = "init") @configurationproperties(prefix = "spring.datasource") public datasource druiddatasource() { druiddatasource druiddatasource = new druiddatasource(); return druiddatasource; } /** * 注册一个statviewservlet * @return */ @bean public servletregistrationbean druidstatviewservlet(){ //org.springframework.boot.context.embedded.servletregistrationbean提供类的进行注册. servletregistrationbean servletregistrationbean = new servletregistrationbean(new statviewservlet(),"/druid/*"); //添加初始化参数：initparams //白名单： servletregistrationbean.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. servletregistrationbean.addinitparameter("deny","192.168.1.73"); //登录查看信息的账号密码. servletregistrationbean.addinitparameter("loginusername","admin"); servletregistrationbean.addinitparameter("loginpassword","123456"); //是否能够重置数据. servletregistrationbean.addinitparameter("resetenable","false"); return servletregistrationbean; } /** * 注册一个：filterregistrationbean * @return */ @bean public filterregistrationbean druidstatfilter(){ filterregistrationbean filterregistrationbean = new filterregistrationbean(new webstatfilter()); //添加过滤规则. filterregistrationbean.addurlpatterns("/*"); //添加不需要忽略的格式信息. filterregistrationbean.addinitparameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*"); return filterregistrationbean; }} |
四、监控
访问 http://localhost:8080/druid， 使用上面配置的账号密码。
五、测试
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@restcontrollerpublic class hellocontroller{ private static final logger logger = loggerfactory.getlogger(hellocontroller.class); @autowired private jdbctemplate jdbctemplate; @requestmapping("hello") public list<map<string, object>> hello() { list<map<string, object>> list = jdbctemplate.queryforlist("select user,password from mysql.user ", new object[]{}); return list; }} |
访问 localhost:8080/hello
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[ { "user": "root", "password": "*81f5e21e35407d884a6cd4a731aebfb6af209e1b" }, { "user": "root", "password": "*81f5e21e35407d884a6cd4a731aebfb6af209e1b" }] |
总结
以上所述是小编给大家介绍的springboot使用druid数据源，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：https://blog.csdn.net/qq_36640744/article/details/80096475
