Druid是什么?
Druid是Java语言中最好的数据库连接池,由阿里巴巴团队开发。Druid能够提供强大的监控和扩展功能。
github地址为https://github.com/alibaba/druid,有丰富的中文文档和常见问题的解答,非常方便。
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.20</version>
</dependency>
<!-- https://mvnrepository.com/artifact/log4j/log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
配置文件
#配置tomcat插件启动端口号
#server.port=8081
#中文及编码配置
#server.tomcat.uri-encoding=UTF-8
#spring.http.encoding.charset=UTF-8
#spring.http.encoding.enabled=true
#spring.http.encoding.force=true
#spring.messages.encoding=UTF-8
#配置DataSource,使用druid
#需要注意的是:spring.datasource.type属性,旧的spring boot版本是不能识别的。
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/orders?serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=root
# 连接池的配置信息
#数据源其他配置,需要增加Druid的配置类(不然不生效)
#配置见:com.lqy.springboot.datasource.druid.DruidConfig
spring.datasource.druid.initialSize=5
spring.datasource.druid.minIdle=5
spring.datasource.druid.maxActive=20
spring.datasource.druid.maxWait=60000
spring.datasource.druid.timeBetweenEvictionRunsMillis=60000
spring.datasource.druid.minEvictableIdleTimeMillis=300000
spring.datasource.druid.validationQuery=SELECT 1 FROM DUAL
spring.datasource.druid.testWhileIdle=true
spring.datasource.druid.testOnBorrow=false
spring.datasource.druid.testOnReturn=false
spring.datasource.druid.poolPreparedStatements=true
#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.druid.filters=stat,wall,log4j
spring.datasource.druid.maxPoolPreparedStatementPerConnectionSize=20
spring.datasource.druid.useGlobalDataSourceStat=true
spring.datasource.druid.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
mybatis.mapper-locations=classpath:mapper/*Mapper.xml
DruidServlet配置
package com.wxapp.config;
import com.alibaba.druid.support.http.StatViewServlet;
import javax.servlet.annotation.WebInitParam;
import javax.servlet.annotation.WebServlet;
/**
* @description:
* @author: Seldom
* @time: 2019/11/10 16:47
*/
@WebServlet(urlPatterns = "/druid/*",
initParams={
// @WebInitParam(name="allow",value="192.168.16.110,127.0.0.1"),// IP白名单 (没有配置或者为空,则允许所有访问)
// @WebInitParam(name="deny",value="192.168.16.111"),// 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="admin"),// 密码
@WebInitParam(name="resetEnable",value="false")// 禁用HTML页面上的“Reset All”功能
})
public class DruidServlet extends StatViewServlet {
private static final long serialVersionUID = 1L;
}
Druid拦截器配置
package com.boolib.mysqldruid.config.druid;
import com.alibaba.druid.support.http.WebStatFilter;
import javax.servlet.annotation.WebFilter;
import javax.servlet.annotation.WebInitParam;
@WebFilter(
filterName = "druidWebStatFilter",urlPatterns = "/*",
initParams = {
@WebInitParam( name="exclusions",value = "*.js,*.css,*.ico,/druid/*")
} )
public class DruidFilter extends WebStatFilter {
}
开启扫描
在启动类写上
@ServletComponentScan