Spring Boot 整合Druid配置数据源监控

整合Druid数据源：

     1，导入Druid数据源：

        <!--引入Druid数据源-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.8</version>
        </dependency>

     2，指定数据源类型：

spring:
  datasource:
    username: root
    password: 123456
    url: jdbc:mysql://localhost:3306/testday
    driver-class-name: com.mysql.jdbc.Driver
    #指定数据源类型
    type: com.alibaba.druid.pool.DruidDataSource

     3，编写一个配置类：

@Configuration
public class DruidConfig {

    //.properties配置文件文件生效
    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druid(){
        return new DruidDataSource();
    }

    //配置Druid的监控
    //1、配置一个管理后台的Servlet
    @Bean
    public ServletRegistrationBean statViewServlet(){
        ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
        Map<String,String> initParams = new HashMap<>();

        initParams.put("loginUsername","admin");
        initParams.put("loginPassword","123456");
        initParams.put("allow","localhost");//默认""就是允许所有访问
        initParams.put("deny","192.168.15.21");//拒绝访问

        bean.setInitParameters(initParams);
        return bean;
    }


    //2、配置一个web监控的filter
    @Bean
    public FilterRegistrationBean webStatFilter(){
        FilterRegistrationBean bean = new FilterRegistrationBean();
        bean.setFilter(new WebStatFilter());

        Map<String,String> initParams = new HashMap<>();
        initParams.put("exclusions","*.js,*.css,/druid/*");

        bean.setInitParameters(initParams);

        bean.setUrlPatterns(Arrays.asList("/*"));

        return  bean;
    }
}

    4，数据源的配置：

spring:
  datasource:
    username: root
    password: 123456
    url: jdbc:mysql://localhost:3306/testday
    driver-class-name: com.mysql.jdbc.Driver
    type: com.alibaba.druid.pool.DruidDataSource
#    schema:
#      - classpath:test_table.sql
    #   数据源其他配置
    initialSize: 5
    minIdle: 5
    maxActive: 20
    maxWait: 60000
    timeBetweenEvictionRunsMillis: 60000
    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

     debug查看配置已经生效：

     5，运行项目，访问：localhost:8080/druid

     6，输入配置类里的密码：123456，点击登录：

ok，整合完成！