準備：druid是阿里巴巴開源的高效能，多功能的連線池，其主要配置引數如下：

springboot 中整合druid 需要新增druid jar 這裡spring-boot 的版本是1.5.7

新增druid maven 配置：

<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>1.1.5</version>
		</dependency>

package com.zyc.config;
import java.sql.SQLException;
import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Value;
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 org.springframework.context.annotation.Primary;
import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
@Configuration
public class DruidConfig {
	@Value("${spring.datasource.url}")
	private String dbUrl;
	@Value("${spring.datasource.username}")
	private String username;
	@Value("${spring.datasource.password}")
	private String password;
	@Value("${spring.datasource.driver-class-name}")
	private String driverClassName;
	@Value("${spring.datasource.initialSize}")
	private int initialSize;
	@Value("${spring.datasource.minIdle}")
	private int minIdle;
	@Value("${spring.datasource.maxActive}")
	private int maxActive;
	@Value("${spring.datasource.maxWait}")
	private int maxWait;
	@Value("${spring.datasource.timeBetweenEvictionRunsMillis}")
	private int timeBetweenEvictionRunsMillis;
	@Value("${spring.datasource.minEvictableIdleTimeMillis}")
	private int minEvictableIdleTimeMillis;
	@Value("${spring.datasource.validationQuery}")
	private String validationQuery;
	@Value("${spring.datasource.testWhileIdle}")
	private boolean testWhileIdle;
	@Value("${spring.datasource.testOnBorrow}")
	private boolean testOnBorrow;
	@Value("${spring.datasource.testOnReturn}")
	private boolean testOnReturn;
	@Value("${spring.datasource.poolPreparedStatements}")
	private boolean poolPreparedStatements;
	@Value("${spring.datasource.filters}")
	private String filters;
	@Value("${spring.datasource.logSlowSql}")
	private String logSlowSql;
	@Bean
	@Primary
	public DataSource dataSource(){
		//@Primary 註解作用是當程式選擇dataSource時選擇被註解的這個
		DruidDataSource datasource = new DruidDataSource();
		datasource.setUrl(dbUrl);
		datasource.setUsername(username);
		datasource.setPassword(password);
		datasource.setDriverClassName(driverClassName);
		datasource.setInitialSize(initialSize);
		datasource.setMinIdle(minIdle);
		datasource.setMaxActive(maxActive);
		datasource.setMaxWait(maxWait);
		datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
		datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
		datasource.setValidationQuery(validationQuery);
		datasource.setTestWhileIdle(testWhileIdle);
		datasource.setTestOnBorrow(testOnBorrow);
		datasource.setTestOnReturn(testOnReturn);
		datasource.setPoolPreparedStatements(poolPreparedStatements); 
		try {
			datasource.setFilters(filters);
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return datasource;
	}
	  @Bean
	    public ServletRegistrationBean druidServlet() {
	        ServletRegistrationBean reg = new ServletRegistrationBean();
	        reg.setServlet(new StatViewServlet());
	        reg.addUrlMappings("/druid/*");
	        reg.addInitParameter("loginUsername", username);
	        reg.addInitParameter("loginPassword", password);
	        reg.addInitParameter("logSlowSql", logSlowSql);
	        return reg;
	    }
	    @Bean
	    public FilterRegistrationBean filterRegistrationBean() {
	        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();
	        filterRegistrationBean.setFilter(new WebStatFilter());
	        filterRegistrationBean.addUrlPatterns("/*");
	        filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
	        filterRegistrationBean.addInitParameter("profileEnable", "true");
	        return filterRegistrationBean;
	    }
}

spring.datasource.type = com.alibaba.druid.pool.DruidDataSource
spring.datasource.url = jdbc:oracle:thin:@127.0.0.1/orcl
spring.datasource.username = root
spring.datasource.password = 123456
spring.datasource.driver-class-name= oracle.jdbc.driver.OracleDriver
spring.datasource.filters = stat,wall,log4j
spring.datasource.maxActive = 20
spring.datasource.initialSize = 1
spring.datasource.maxWait = 60000
spring.datasource.minIdle = 1
spring.datasource.timeBetweenEvictionRunsMillis = 60000
spring.datasource.minEvictableIdleTimeMillis = 300000
spring.datasource.validationQuery = select 'x'
spring.datasource.testWhileIdle = true
spring.datasource.testOnBorrow = false
spring.datasource.testOnReturn = false
spring.datasource.poolPreparedStatements = true
spring.datasource.maxOpenPreparedStatements = 20
spring.datasource.logSlowSql=true

啟動專案訪問http://ip:port/druid/login.html