Durid java数据库连接池 的使用

1、自定义方式

• 导入Maven依赖

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.2.5</version>
        </dependency>

• 创建配置类MyDatasourceConfig

@Configuration
public class MyDataSourceConfig {
//说明会将该Bean的配置 与application.yml 前缀为spring.datasource下的属性绑定为DruidDataSource //的属性。
    @ConfigurationProperties("spring.datasource")
    @Bean
    public DataSource dataSource(){
        DataSource druidDataSource = new DruidDataSource();
        return druidDataSource;
    }
}

同时可以在改配置类中增加多个Bean.比如

@Bean
   public ServletRegistrationBean druidStatView(){//stat 监控
       StatViewServlet statViewServlet = new StatViewServlet();
       ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(statViewServlet,"/druid/*");

        return servletRegistrationBean;
    }
    @Bean
    public FilterRegistrationBean WebStatFilter(){//web监控
        WebStatFilter webStatFilter = new WebStatFilter();

        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(webStatFilter);
        filterRegistrationBean.setUrlPatterns(Collections.singletonList("/*"));
        Map<String,String> initParams = new HashMap<String,String>();
        initParams.put("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
        filterRegistrationBean.setInitParameters(initParams);
        return filterRegistrationBean;
    }

2、导入starter场景

      <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.10</version>
        </dependency>

根据starter里面的xxxAutoConfiguration 设置 application.yml

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/db2021?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
    username: root
    password: 123456
    driver-class-name: com.mysql.cj.jdbc.Driver
    filters: stat,wall,slf4j

    druid:
      stat-view-servlet:
        enabled: true
        login-username: admin
        login-password: admin
        url-pattern: '/druid/*'
        resetEnable: false
      web-stat-filter:
        enabled: true
        url-pattern: '/*'
        exclusions: '*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*'
        session-stat-enable: true
      filter:
        wall:
          enabled: true
          config:
            delete-allow: true
            drop-table-allow: true
        stat:
          enabled: true
          log-slow-sql: true
          slow-sql-millis: 2000
        slf4j:
          enabled: true

      aop-patterns: com.gaojl.*