1.pom.xml 引入DruidDataSource，log4j

　　<dependency>

    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.1.21</version>
</dependency>

<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>

2.application.yaml 指定資料來源型別為DruidDataSource 以及相關配置

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

  filters: wall,stat,slf4j
   filter:
    #sql監測
  stat:
  enabled: true
      #sql合併
  merge-sql: true
  slow-sql-millis: 0
  logback:
      #日誌記錄
   enabled: true

3.編寫config類

@Configuration
public class DuriDataSourceConfig {
    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource duridDataSource(){
        return new DruidDataSource();
    }

    //後臺監控
    @Bean
    public ServletRegistrationBean statViewServlet(){
        ServletRegistrationBean<StatViewServlet> bean=new ServletRegistrationBean<>(new StatViewServlet(), "/druid/*");

        Map<String, String> initParameters=new HashMap<>();

        initParameters.put("loginUsername","admin");
        initParameters.put("loginPassword","123456");

        initParameters.put("allow","");
        bean.setInitParameters(initParameters);

        return bean;
    }
}

4.訪問url http://localhost:8083/druid/login.html