Spring Boot中得到当前数据库的连接池

用spring boot开发应用程序确实简单了很多，有时候需要在运行过程中得到当前数据库连接池的情况。其实spring boot 也提供了很方便的方法，对于连接池，可以用spirng boot 默认的tomcat, 也有DBCP类型的。看项目的具体情况了，直接上代码，其实只需要注入java.sql.Datasource 这个类就可以得到连接池的情况了。

package com.yihaomen;

import javax.sql.DataSource;

import org.mybatis.spring.annotation.MapperScan;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.boot.CommandLineRunner;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.boot.web.support.SpringBootServletInitializer;

import org.springframework.transaction.annotation.EnableTransactionManagement;



@EnableTransactionManagement()

@MapperScan("com.yihaomen.*")

@SpringBootApplication

public class Application extends SpringBootServletInitializer implements CommandLineRunner {	

	@Autowired

    DataSource dataSource;	

	public static void main(String[] args) {

		SpringApplication.run(Application.class, args);

	}

	@Override

	public void run(String... arg0) throws Exception {		

		System.out.println("DATASOURCE = " + dataSource);

	}	

}

有打印出来的连接池情况:

org.apache.tomcat.jdbc.pool.DataSource@1897dab{ConnectionPool[defaultAutoCommit=null; defaultReadOnly=null; defaultTransactionIsolation=-1; defaultCatalog=null; driverClassName=com.mysql.jdbc.Driver; maxActive=100; maxIdle=100; minIdle=10; initialSize=10; maxWait=30000; testOnBorrow=true; testOnReturn=false; timeBetweenEvictionRunsMillis=5000; numTestsPerEvictionRun=0; minEvictableIdleTimeMillis=60000; testWhileIdle=false; testOnConnect=false; password=********; url=jdbc:mysql://localhost:3306/mydb?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true; username=root; validationQuery=Select 1; validationQueryTimeout=-1; validatorClassName=null; validationInterval=3000; accessToUnderlyingConnectionAllowed=true; removeAbandoned=false; removeAbandonedTimeout=60; logAbandoned=false; connectionProperties=null; initSQL=null; jdbcInterceptors=null; jmxEnabled=true; fairQueue=true; useEquals=true; abandonWhenPercentageFull=0; maxAge=0; useLock=false; dataSource=null; dataSourceJNDI=null; suspectTimeout=0; alternateUsernameAllowed=false; commitOnReturn=false; rollbackOnReturn=false; useDisposableConnectionFacade=true; logValidationErrors=false; propagateInterruptState=false; ignoreExceptionOnPreLoad=false; }

From：一号门