SpringBoot Druid整合，SpringBoot 集成Druid

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SpringBoot Druid整合，SpringBoot 集成Druid

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©Copyright 蕃薯耀 2018年4月8日

http://www.cnblogs.com/fanshuyao/

源代码下载见：http://fanshuyao.iteye.com/blog/2415353

一、SpringBoot引入Druid的依赖包

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.9</version>
</dependency>

二、设置配置文件application.properties

spring.datasource.url=jdbc:mysql://192.168.1.166:3306/study
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
#spring.datasource.schema=
#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.initialSize=5
spring.datasource.minIdle=5
spring.datasource.maxActive=20
spring.datasource.maxWait=60000
spring.datasource.timeBetweenEvictionRunsMillis=60000
spring.datasource.minEvictableIdleTimeMillis=300000
spring.datasource.validationQuery=SELECT 1 FROM DUAL
spring.datasource.testWhileIdle=true
spring.datasource.testOnBorrow=false
spring.datasource.testOnReturn=false
spring.datasource.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.filters=stat,wall,log4j
spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
spring.datasource.useGlobalDataSourceStat=true
spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

三、增加Druid自定义配置类

为什么要增加呢？

因为SpringBoot本身提供的配置只是部分的数据库连接配置，很多Druid需要的属性配置是没有的，如：

spring.datasource.initialSize

这个属性，SpringBoot是没有的，只有Druid才有，所以需要增加相应的配置类，自动注入。

DruidConfig 类：

import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import javax.sql.DataSource;
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 com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
/**
* 导入druid数据源，扩展相关的配置属性
*
*/
@Configuration
public class DruidConfig {
/**
* 配置Druid的属性，和DataSource进行绑定，前缀设置为：spring.datasource
* 不配置的话，很多初始化的属性是没有绑定的
* @return
*/
@Bean
@ConfigurationProperties(prefix="spring.datasource")
public DataSource druid() {
return new DruidDataSource();
}
/**
* 配置druid监控
* 配置一个管理后台的servlet
* 访问地址：http://localhost:8080/druid/
* @return
*/
@Bean
public ServletRegistrationBean statViewServlet() {
ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
Map<String, String> initParameters = new HashMap<String, String>();
initParameters.put("loginUsername", "admin");//属性见：com.alibaba.druid.support.http.ResourceServlet
initParameters.put("loginPassword", "123456");
initParameters.put("allow", "");//默认允许所有
initParameters.put("deny", "");
bean.setInitParameters(initParameters);
return bean;
}
/**
* 配置一个web监控的filter
* @return
*/
@Bean
public FilterRegistrationBean webStatFilter() {
FilterRegistrationBean filterBean = new FilterRegistrationBean();
filterBean.setFilter(new WebStatFilter());
filterBean.setUrlPatterns(Arrays.asList("/*"));
Map<String, String> initParameters = new HashMap<String, String>();
initParameters.put("exclusions", "*.js,*.css,/druid/*");//属性见：com.alibaba.druid.support.http.WebStatFilter
filterBean.setInitParameters(initParameters);
return filterBean;
}
}