springbootmybatisdruidlogback启动时出现一个error:load filter error, filter not found : logback,但不影响程序启动。 经过查看druid源码,发现是druid过滤器配置错误造成的,druid支持的过滤器类型在duid-filter.properties中如下:
druid…
转自 The concept of time is at the core of all Big Data processing technologies but is particularly important in the world of data stream processing. Indeed, it is reasonable to say that the way in which different systems handle time-based processing is w…
转自 Some time ago at Imply, we launched PlyQL, a command line utility that provides an SQL-like interface to Druid via Plywood. We heard a lot of positive feedback as many people prefer to use SQL over Druid’s native JSON-over-HTTP interface. The most c…
文章目录项目场景问题描述原因分析解决方案项目场景
JDK 11 问题描述
Maven项目本地编译时,编译日志中出现下面的warning提示:
[WARNING] The POM for com.alibaba:druid:jar:1.2.6 is invalid, transitive dependencies (if any) will not be availa…
问题描述
使用mybatis-plus查数据的时候报Error attempting to get column * from result set.
LambdaQueryChainWrapper<User> wrapper new LambdaQueryChainWrapper<>(userDao).eq(User::getAccount, loginDto.getAccount());
Optional<User> optional…
业务需求:输入一条SQL,解析出对应的结果表字段列表与参数列表。
select t.id,t.name,date_format(update_time,%Y-%m) as update_month
from t_user t
where t.account#{account:varchar};解析后需获得:
结果字段信息:id&#x…
主要是完成本地的Kafka和Druid搭建过程中,出现的Cannot start up because port 2181 is already in use.问题 问题原因:使用brew安装的的Druid也是自带zookeeper的,所以在单机部署的时候会和brew安装的Kafka的zookeeper端口2181冲突ÿ…
转自
In today’s world you want to learn from your customers as fast as possible. This blog gives an introduction to setting up streaming analytics using open source technologies. We’ll use Divolte, Kafka, Superset and Druid to set up a system that lets …
报错信息:
Failed to bind properties under spring.datasource.druid to javax.sql.DataSource:Property: spring.datasource.druid.filtersValue: stat,wall,log4jOrigin: class path resource [application.yml]:21:16Reason: org.apache.log4j.Priority解决方案…