springboot 搭建druid数据监控

1 配置application.yml

spring:
  datasource:
    username: root
    password: root
    url: jdbc:mysql://127.0.0.1:3306/jdbc
    driver-class-name: com.mysql.jdbc.Driver
#    schema:
#      - classpath:employee.sql
    type: com.alibaba.druid.pool.DruidDataSource

    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

2 spring-boot 默认是使用tomcat的数据源所以配置了必须写配置类

learn/src/main/java/springboot/learn/config/DruidConfig.java

package springboot.learn.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.sql.DataSource;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;


@Configuration
public class DruidConfig  {

    //切换datasource配置 默认使用tomcat 不切换druid配置不生效
    @ConfigurationProperties(prefix = "spring.datasource")//配置切换路径
    @Bean
    public DataSource dataSource(){
        return new DruidDataSource();
    }

    //使用druid进行web的数据监控
    //配置servlet后台监控
    @Bean
    public ServletRegistrationBean servletRegistrationBean(){
        ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*");//配置druid servlet后台配置路径
        System.out.println("ServletRegistrationBean......");
        System.out.println(bean);
        Map<String,String> initParams = new HashMap<>();

        initParams.put("loginUsername","admin");//监控后台用户名
        initParams.put("loginPassword","123456");//监控后台密码
        initParams.put("allow","");//默认允许所有访问
        initParams.put("deny","192.168.15.21");

        bean.setInitParameters(initParams);
        return bean;
    }

    //配置filter过滤
    @Bean
    public FilterRegistrationBean filterRegistrationBean(){
        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;
    }
}

访问域名 http://localhost:8080/druid