Programmer Group

At present, how to lightweight indoor three-dimensional maps, which can display maps quickly on mobile WeChat, computer browser and other platforms, shows a good map performance, and turns the map without card is a problem everyone has to face. With the three-dimensional indoor map engine ESMap, you can not worry about this problem at present. ...

Zabbix monitoring platform installation and deployment For the deployment of Zabbix monitoring platform, at least four components need to be installed, namely, Zabbix? Server, Zabbix? Web, Databases, and Zabbix? Agent. The detailed steps for the installation and configuration of Zabbix monitoring platform are as follows: 1, System environment ...

JDBC JDBC(Java Database connectivity) is a Java API for executing SQL statements Can provide unified access to a variety of relational databases Java database connection specification (a set of interfaces) There are four core classes of JDBC: DriverManager create connection Connection connection class S ...

Because the front-end needs user information userInfo, and the back-end modules, such as reports, also need user information, the frequency of query is very high, involving more linked tables. However, the actual system users are small and the data is basically unchanged. For the convenience of each module, it is decided to adopt caching. Choos ...

Recent projects require the configuration of a four-node cluster of shared storage to enable the cluster to form a load balancing.   However, you know that PostgreSQL does not support the generation of multiple instances using the same data directory. When executing pg_ctl start, if an instance of the specified data directory is running, the ...

Get mirror image docker run -p 33006:3306 --name mysql-master -v /data/docker/mysql/conf/:/etc/mysql/mysql.conf.d/:rw -v /data/docker/mysql/logs:/var/log/mysql/:rw -v /data/docker/mysql/data/:/var/lib/mysql/:rw -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7 Enter docker mysql docker exec -it mysql /bin/bash docker m ...

0. Start the 1x1 size service window to monitor the change, and press the volume button Touch screen events are not accepted. public static final int FLAG_NOT_TOUCHABLE = 0x00000010; When the window can get the focus (without setting the flag not focus option), the point device events (mouse, touch screen) outs ...

CRUD task management system based on spring boot 2. X + quartz is suitable for small and medium-sized projects. CRUD task management system based on spring boot + quartz: https://gitee.com/52itstyle/spring-boot-quartz development environment JDK1.8,Maven,Eclipse Technology stack SpringBoot2.0.1,thymeleaf3.0.9,quartz2.3.0,iview,vue,layer,AdminL ...

1. Set the relevant database connection statements in the jdbc.properties file jdbc_url=jdbc:mysql://ip address: port / database name? Characterencoding = utf8 & zerodatetimebehavior = round jdbc_username=User name jdbc_password=User password 2. Read the modified properties file in applicationContext.xml <context:pr ...

1. Convert URL: from string to hyperlink If you're developing a forum, a blog, or a regular form submission, you often need users to visit a website. With this function, the URL string can be automatically converted to a hyperlink. function makeClickableLinks($text) { $text = eregi_replace('(((f|ht){1}tp://)[-a-zA-Z0-9@:%_+.~#?&//=]+)' ...