SpringBoot 数据源配置（四）

1、引入依赖包

<!-- jdbc -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<!-- mysql 驱动包 -->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
</dependency>
<!-- druid -->
<dependency>
       <groupId>com.alibaba</groupId>
       <artifactId>druid</artifactId>
       <version>1.1.9</version>
</dependency>

 2、配置文件application.properties

#数据库链接
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://192.168.0.202:3306/tzxx_34?useUnicode=true&characterEncoding=utf8&serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=123456

#druid连接池
spring.datasource.type: com.alibaba.druid.pool.DruidDataSource
#最大活跃数
spring.datasource.maxActive: 20
#初始化数量
spring.datasource.initialSize: 1
#最大连接等待超时时间
spring.datasource.maxWait: 60000
#打开PSCache，并且指定每个连接PSCache的大小
spring.datasource.poolPreparedStatements: true
spring.datasource.maxPoolPreparedStatementPerConnectionSize: 20
#通过connectionProperties属性来打开mergeSql功能；慢SQL记录
#connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
spring.datasource.minIdle: 1
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
#配置监控统计拦截的filters，去掉后监控界面sql将无法统计,'wall'用于防火墙
filters: stat, wall, log4j

 3、新建配置类：DruidConfiguration.java

package com.zzstxx;

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.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;

/**
 * druid相关配置
 * @author Administrator
 *
 */
@Configuration
public class DruidConfiguration {

	@Bean
	public ServletRegistrationBean statViewServlet() {
		// 创建servlet注册实体
		ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(
				new StatViewServlet(), "/druid/*");
		// 设置ip白名单
		servletRegistrationBean.addInitParameter("allow", "127.0.0.1");
		// 设置ip黑名单，如果allow与deny共同存在时,deny优先于allow
		servletRegistrationBean.addInitParameter("deny", "192.168.0.19");
		// 设置控制台管理用户
		servletRegistrationBean.addInitParameter("loginUsername", "druid");
		servletRegistrationBean.addInitParameter("loginPassword", "123456");
		// 是否可以重置数据
		servletRegistrationBean.addInitParameter("resetEnable", "false");
		return servletRegistrationBean;
	}

	@Bean
	public FilterRegistrationBean statFilter() {
		// 创建过滤器
		FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(
				new WebStatFilter());
		// 设置过滤器过滤路径
		filterRegistrationBean.addUrlPatterns("/*");
		// 忽略过滤的形式
		filterRegistrationBean.addInitParameter("exclusions",
				"*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
		return filterRegistrationBean;
	}
}

 4、启动服务：访问 http://127.0.0.1:8888/springboot-dev/druid/index.html