spring boot +druid数据库连接池配置

1、启动应用入口修改

增加servlet注解

import javax.sql.DataSource;

import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.log4j.Logger;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;

import com.alibaba.druid.pool.DruidDataSource;

@EnableAutoConfiguration
@SpringBootApplication
@ComponentScan
@ServletComponentScan  
@MapperScan("com.yzf.mapper")
public class SpringbootMybatisApplication {
    private static Logger logger = Logger.getLogger(SpringbootMybatisApplication.class);
    
    //DataSource配置
    @Bean
    @ConfigurationProperties(prefix="spring.datasource")
    public DataSource dataSource() {
        //return new org.apache.tomcat.jdbc.pool.DataSource();
         DruidDataSource druidDataSource = new DruidDataSource();  
         return druidDataSource;  
    }
    
  //提供SqlSeesion
    @Bean
    public SqlSessionFactory sqlSessionFactoryBean() throws Exception {
 
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setDataSource(dataSource());
 
        PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
 
        sqlSessionFactoryBean.setMapperLocations(resolver.getResources("classpath:/mybatis/*.xml"));
 
        return sqlSessionFactoryBean.getObject();
    }
    
    @Bean
    public PlatformTransactionManager transactionManager() {
        return new DataSourceTransactionManager(dataSource());
    }
    
    public static void main(String[] args) {
        SpringApplication.run(SpringbootMybatisApplication.class, args);
    }
}

2、连接池修改

properties

# 数据库访问配置
# 主数据源，默认的
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/db_shiro
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=5
spring.datasource.maxActive=20
# 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=true
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

3、新增监控servlet

package com.yzf.servlet;

import javax.servlet.annotation.WebInitParam;

import com.alibaba.druid.support.http.StatViewServlet;
import javax.servlet.annotation.WebServlet;  

/**
 * web.xml中配置
 * <!-- 数据库监控 start -->
    <servlet>
        <servlet-name>DruidStatView</servlet-name>
        <!-- 展示监控页面的servlet -->
        <servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class>
        <init-param>
            <param-name>profileEnable</param-name>
            <param-value>true</param-value>
        </init-param>
        <init-param>
            <param-name>resetEnable</param-name>
            <param-value>false</param-value>
        </init-param>
        <!-- 可选项  登陆的用户名和密码 -->
        <init-param>
            <param-name>loginUsername</param-name>
            <param-value>druid</param-value>
        </init-param>
        <init-param>
            <param-name>loginPassword</param-name>
            <param-value>druid</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>DruidStatView</servlet-name>
        <url-pattern>/druid/*</url-pattern>
    </servlet-mapping>
 * 
 * @author luozuzu
 *
 */
@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="123"),// 密码  
        @WebInitParam(name="resetEnable",value="false")// 禁用HTML页面上的“Reset All”功能  
})  
public class DruidStatViewServlet extends StatViewServlet {  
    private static final long serialVersionUID = 1L;  
}  

4、新增filter

package com.yzf.servlet;

import javax.servlet.annotation.WebFilter;
import javax.servlet.annotation.WebInitParam;

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

@WebFilter(filterName="druidWebStatFilter",urlPatterns="/*",  
initParams={  
         @WebInitParam(name="exclusions",value="*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*")// 忽略资源  
 }  
)  
public class DruidStatFilter extends WebStatFilter{  
  
}  

参考资料：

http://blog.csdn.net/sinat_36203615/article/details/53759935