springboot配置druid连接池的方法示例

<dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>druid</artifactId>
  <version>1.1.12</version>
</dependency>

@Configuration//在项目启动时可以初始化配置
public class DruidConfiguration {
  @Bean
  public ServletRegistrationBean staViewServlet(){
    ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),
        "/druid/*");
    //白名单为空允许任何ip访问
    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的即提示：Sorry you are not permitted...
    servletRegistrationBean.addInitParameter("deny","127.0.0.2");
    //登录查看信息的账号密码
    servletRegistrationBean.addInitParameter("loginUsername","druid");
    servletRegistrationBean.addInitParameter("loginPassword","druid");
    //是否能够重置数据
    servletRegistrationBean.addInitParameter("resetEnable","true");
    return servletRegistrationBean;
  }

  @Bean
  public FilterRegistrationBean statFilter(){
    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,*.jpn,*.png,*.css,*.ico,/druid/*");
    return filterRegistrationBean;
  }

  //配置数据库的基本连接信息
  @Bean
  @Primary
  @ConfigurationProperties(prefix = "spring.datasource")//在application.properties中读取配置信息注入到DruidDataSource里
  public DataSource dataSource(){
    DruidDataSource druidDataSource = DataSourceBuilder.create().type(DruidDataSource.class).build();
    druidDataSource.setInitialSize(3);//初始化物理连接的数量
    try {
      druidDataSource.addFilters("stat,wall");//stat是sql监控，wall是防火墙(如果不添加则监控无效)，不能添加log4j不然会出错
    } catch (SQLException e) {
      e.printStackTrace();
    }
    return druidDataSource;
  }

}

spring.datasource.type=com.alibaba.druid.pool.DruidDataSource

spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/mrbshiro?characterEncoding=UTF-8
spring.datasource.username=root
spring.datasource.password=123456