SpringBoot学习笔记（5）Druid连接池

包结构

pom文件

　　　　　<!--自定义连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.10</version>
        </dependency>

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

application.yml

spring:
  datasource:
    username: root
    password: 123456
    url: jdbc:mysql://192.168.0.157:3306/db1
    driver-class-name: com.mysql.cj.jdbc.Driver
    type: com.alibaba.druid.pool.DruidDataSource

    #   数据源其他配置
    #初始化大小，最小，最大
    initialSize: 5
    minIdle: 5
    maxActive: 20
    # 配置获取连接等待超时的时间
    maxWait: 60000
    # 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
    timeBetweenEvictionRunsMillis: 60000
    # 配置一个连接在池中最小生存的时间，单位是毫秒
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    poolPreparedStatements: true
    #   配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
    filters: stat,wall,log4j
    maxPoolPreparedStatementPerConnectionSize: 20
    useGlobalDataSourceStat: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

配置druid数据源连接池

@Configuration
public class DruidConfig {

    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druid(){
        return new DruidDataSource();
    }

    //配置Druid的监控
    //1.配置一个管理后台servlet
    @Bean
    public ServletRegistrationBean statViewServlet(){
        ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");

        HashMap<String, String> param = new HashMap<String, String>();
        param.put("loginUsername", "admin");//账号
        param.put("loginPassword", "admin");//密码
        param.put("allow","");//默认允许所有
        param.put("deny","");//不允许的黑名单ip

        bean.setInitParameters(param);
        return bean;
    }



    //配置一个web监控的filter
    @Bean
    public FilterRegistrationBean webStatFilter(){
        FilterRegistrationBean bean = new FilterRegistrationBean();
        bean.setFilter(new WebStatFilter());

        HashMap<String, String> param = new HashMap<String, String>();
        param.put("exclusions", "*.js,*.css,/druid/");
        bean.setInitParameters(param);
        bean.setUrlPatterns(Arrays.asList("/*"));
        return bean;
    }
}

打开 http://localhost:8080/druid