配置Druid监控

1.application.yml(注意对齐)

spring:
  datasource:
    username: root
    password: 123456
#    针对mysql8版本以上的驱动包，需要指定时区
    url: jdbc:mysql://127.0.0.1:3306/jdbc?serverTimezong=GMT%2B8
    #    针对mysql8版本以上的驱动包，需要指定新的驱动类
    driver-class-name: com.mysql.cj.jdbc.Driver
    #引入Druid数据源
    type: com.alibaba.druid.pool.DruidDataSource

    #   数据源其他配置, DataSourceProperties中没有相关属性,默认无法绑定
    initialSize: 8
    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,logback
    maxPoolPreparedStatementPerConnectionSize: 25
    useGlobalDataSourceStat: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

2.config/DruidConfig

package com.cc.springboot.config;

        import com.alibaba.druid.pool.DruidDataSource;
        import com.alibaba.druid.support.http.StatViewServlet;
        import com.alibaba.druid.support.http.WebStatFilter;
        import org.springframework.boot.context.properties.ConfigurationProperties;
        import org.springframework.boot.web.servlet.FilterRegistrationBean;
        import org.springframework.boot.web.servlet.ServletRegistrationBean;
        import org.springframework.context.annotation.Bean;
        import org.springframework.context.annotation.Configuration;

        import javax.servlet.Filter;
        import javax.sql.DataSource;
        import java.util.Arrays;
        import java.util.HashMap;
        import java.util.Map;

//绑定Druid相关信息
@Configuration
public class DruidConfig {
    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druid(){
        return new DruidDataSource();
    }

/* 配置一个Druid监控
     1.配置一个druid的后台  管理servlet
     2.配置一个druid的filter
  */
//  1.配置一个druid的后台  管理servlet
    @Bean
    public ServletRegistrationBean statViewServlet(){
//        注意：请求是/druid/*
        ServletRegistrationBean<StatViewServlet> bean = new ServletRegistrationBean<>(new StatViewServlet(), "/druid/*");
        Map<String,String> initParam=new HashMap<>();
        initParam.put(StatViewServlet.PARAM_NAME_USERNAME,"root");
        initParam.put(StatViewServlet.PARAM_NAME_PASSWORD,"123");
//        如果不写，则默认所有ip都可以访问
        initParam.put(StatViewServlet.PARAM_NAME_ALLOW,"");
        initParam.put(StatViewServlet.PARAM_NAME_DENY,"192.168.10.1");
        bean.setInitParameters(initParam);
        return bean;
    }

//     2.配置一个druid的filter
    @Bean
    public FilterRegistrationBean webStatFilter(){
        FilterRegistrationBean<Filter> bean = new FilterRegistrationBean<>();
        bean.setFilter(new WebStatFilter());

        Map<String,String> initParams=new HashMap<>();
        initParams.put(WebStatFilter.PARAM_NAME_EXCLUSIONS,"*.js,*.css,/druid/*");
        bean.setInitParameters(initParams);
//        设置拦截请求
        bean.setUrlPatterns(Arrays.asList("/*"));
        return bean;
    }
    
}

3.localhost:8080/druid浏览器访问，用户名：root  密码;123

出现问题：sql没有检测到

原因：application.yml中对齐问题