Database Connection Pool C3p0 and Druid

Database connection pool 1. The database connection pool is a container. There are several connection objects in the container. We can use them directly and return them automatically after using them. It is a factory of physical data sources. DataSource interface 1. java.sql 2. getConnection(); ...

Posted on Wed, 02 Oct 2019 08:41:48 -0700 by tommix

Use of PageHelper in BES-Project

In order to reduce data transmission and realize paging function in the previous section, PageHelper is used in the project. PageInfo is used to return the value. Take the Organization table operation as an example. Controller layer Configuration of pagehelper in application.yml in the controller ...

Posted on Wed, 02 Oct 2019 07:24:57 -0700 by budimir

Django choices Options and the Use of Rich Text Editors

Project preparation 1. Create a database create database choices_test default charset utf8; 2. Create a Django project named choices_test; 3. Create app01; The project structure is as follows 4. Configure the database; DATABASES = { 'default': { 'ENGINE': 'django.db.backends.mysql', 'NAME': 'choices_test', ...

Posted on Wed, 02 Oct 2019 00:04:58 -0700 by RDKL PerFecT

MySQL Database Foundation: An Example of MySQL Database Creation

Links to the original text: https://blog.51cto.com/9291927/2091340 MySQL Database Foundation (4) - An Example of MySQL Database Creation This article is reproduced from: https://blog.51cto.com/9291927/2091340. I. Creati ...

Posted on Tue, 01 Oct 2019 22:02:19 -0700 by MatthewJ

Related operations in Vue-CLI project

0830 summary Related operations in Vue-CLI project I. Basic Workflow of Front-end Routing directory structure |vue-proj | |src | | |components | | | |Nav.vue | | |views | | | |PageFirst.vue | | | |PageSecond.vue | | |App.vue | | |router.js App.vue: root component <template> <div id="app"> ...

Posted on Tue, 01 Oct 2019 18:55:24 -0700 by JackSevelle

Construction of hive 3.1.0 under centos7

In the above blog Construction of hadoop 3.2.0 fully distributed cluster under Centos 7 This paper introduces the construction of hadoop cluster. This article will introduce the construction of hive environment. Catalog I. Host environment Second, build hadoop cluster first III. Installation of h ...

Posted on Tue, 01 Oct 2019 18:44:51 -0700 by *Lynette

spirngboot dependencies and annotations

Article directory spirngboot dependencies and annotations (2) pom file webjars dependency mysql dependency of pom file properties file mysql configuration sqlserver dependency of pom file properties file sqlserver configuration pom file mongeDB dependency properties file mongoDB configuration Neo4j ...

Posted on Tue, 01 Oct 2019 18:08:19 -0700 by john_nyc

Solving cannot find-lmysqlclient

Good memory, not bad pen This is not the first time I met this problem, but I went to the website to find the answer every time. I found that most of them could not solve the problem. It took me a little time to solve this problem, so I recorded it. Installing mysqlclient under python is the following error. Install the command pip install mysq ...

Posted on Tue, 01 Oct 2019 18:02:04 -0700 by scrtagt69

New echo module in nginx

Add echo module when nginx is installed1. Download new modules (upgrade nginx like this) Module: v0.61.tar.gz 2. Unzip to the same directory as nginx package [root@nginx ~]# cd /usr/src/ [root@nginx src]# ls debug kernels nginx-1.16.1 nginx-1.16.1.tar.gz v0.61.tar.gz [root@nginx src]# tar xf v0.61.t ...

Posted on Tue, 01 Oct 2019 06:19:10 -0700 by webspinner

mysql-proxy proxies the same intranet database

Elementary analysis: Specific deployment: mysql server: # Authorize remote login account   [root@localhost ~]# mysql -uroot  -p mysql> GRANT ALL ON *.* to 'test'@'192.168.0.1' IDENTIFIED BY 'lmdb(A7105#B9606@com!'; mysql> flush privileges;  mysql> select user,host from mysql.user; +---------------+----------------+ | user          |  ...

Posted on Tue, 01 Oct 2019 05:04:14 -0700 by SparkleD