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>
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二、druid配置
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druid.properties
#数据库设置
spring.datasource.driverclassname=com.mysql.jdbc.driver
spring.datasource.url=jdbc:mysql://localhost:3306/uu_core?useunicode=true&characterencoding=utf8&autoreconnect=true&usessl=true
spring.datasource.username=root
spring.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=5
spring.datasource.minidle=1
spring.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=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=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
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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;
}
}
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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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@restcontroller
public 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;
}
}
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访问 localhost:8080/hello
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[
{
"user": "root",
"password": "*81f5e21e35407d884a6cd4a731aebfb6af209e1b"
},
{
"user": "root",
"password": "*81f5e21e35407d884a6cd4a731aebfb6af209e1b"
}
]
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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快网idc网站的支持！
原文链接：https://blog.csdn.net/qq_36640744/article/details/80096475
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