请尽量使用高版本Spring boot 1.4以上

在Spring Boot1.4.0中驱动配置信息没有问题，但是连接池的配置信息不再支持这里的配置项，即无法通过配置项直接支持相应的连接池；这里列出的这些配置项可以通过定制化DataSource来实现。

目前Spring Boot中默认支持的连接池有dbcp,dbcp2, tomcat, hikari连接池。 

由于Druid暂时不在Spring Boot中的直接支持，故需要进行配置信息的定制：

package com.boot.config;import com.alibaba.druid.pool.DruidDataSource;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.annotation.Value;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.context.annotation.Primary;import javax.activation.DataSource;import java.sql.SQLException;@Configurationpublic class DruidDBConfig {    private Logger logger = LoggerFactory.getLogger(DruidDBConfig.class);    @Value("${spring.datasource.url}")    private String dbUrl;    @Value("${spring.datasource.username}")    private String username;    @Value("${spring.datasource.password}")    private String password;    @Value("${spring.datasource.driverClassName}")    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.maxPoolPreparedStatementPerConnectionSize}")    private int maxPoolPreparedStatementPerConnectionSize;    @Value("${spring.datasource.filters}")    private String filters;    @Value("{$spring.datasource.connectionProperties}")    private String connectionProperties;    @Bean     //声明其为Bean实例    @Primary  //在同样的DataSource中，首先使用被标注的DataSource    public DruidDataSource dataSource(){        DruidDataSource datasource = new DruidDataSource();        datasource.setUrl(this.dbUrl);        datasource.setUsername(username);        datasource.setPassword(password);        datasource.setDriverClassName(driverClassName);        //configuration        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);        datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);        try {            datasource.setFilters(filters);        } catch (SQLException e) {            logger.error("druid configuration initialization filter", e);        }        datasource.setConnectionProperties(connectionProperties);        return datasource;    }}

package com.boot.filter;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 配置. * * 这样的方式不需要添加注解：@ServletComponentScan * @author Administrator * */@Configurationpublic class DruidConfiguration {    /**     * 注册一个StatViewServlet     * @return     */    @Bean    public ServletRegistrationBean DruidStatViewServle2(){        //org.springframework.boot.context.embedded.ServletRegistrationBean提供类的进行注册.        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*");        //添加初始化参数：initParams        //白名单：        servletRegistrationBean.addInitParameter("allow","127.0.0.1");        //IP黑名单 (存在共同时，deny优先于allow) : 如果满足deny的话提示:Sorry, you are not permitted to view this page.        servletRegistrationBean.addInitParameter("deny","");        //登录查看信息的账号密码.        servletRegistrationBean.addInitParameter("loginUsername","admin");        servletRegistrationBean.addInitParameter("loginPassword","123456");        //是否能够重置数据.        servletRegistrationBean.addInitParameter("resetEnable","false");        return servletRegistrationBean;    }    /**     * 注册一个：filterRegistrationBean     * @return     */    @Bean    public FilterRegistrationBean druidStatFilter2(){        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());        //添加过滤规则.        filterRegistrationBean.addUrlPatterns("/*");        //添加不需要忽略的格式信息.        filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");        return filterRegistrationBean;    }}

运行一下 访问

http://127.0.0.1/druid/index.html