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1. First, build a static HTML page for display. The page is simple and only needs a form form <form action="Cc" method="post"> User name < input type = "text" name = "name1" > Password < input type = "password" name = "pass" > <input type="submit"> ...

File upload learning record used in Java Web project (1) Introduction: File upload is a commonly used function in development. I will mainly introduce the implementation of basic file upload function with commons-fileupload-1.2.1.jar package, that is, file upload to the specified directory, and introduce the relevant classes and methods use ...

This section details the API of the query set, which is based on the following model, the same as the one in the previous section: from django.db import models class Blog(models.Model): name = models.CharField(max_length=100) tagline = models.TextField() def __str__(self): # __unicode__ on Python 2 return sel ...

Explain See the article of the head of the official account, and refer to a simple database connection pool. text ConnPool connection pool class must implement javax.sql.DataSource interface package com.datasource.connpool; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import ...

The project needs to back up the database regularly. Here are your own operation notes 1. Check the disk space 　　 # df -h Filesystem Size Used Avail Use% Mounted on /dev/vda1 40G 3.6G 34G 10% / tmpfs 16G 0 16G 0% /dev/shm This is my current situation of linux server. I don't know why it's like this (I'm ...

oracle installation, user authorization, table operation, data type, ddl table, dml data. Learning video: https://www.bilibili.com/video/BV1tJ411r7EC?p=15 Baidu cloud installation package is attached to the installation tutorial: https://blog.csdn.net/qq_40774525/article/details/79919057  oracle Baidu cloud installation package: https://pan.b ...

Recently contacted with ssdb, I feel that it is similar to redis. For the time being, I haven't studied too much. Anyway, even the command is almost used. The current framework is yii Requirements: Due to the large amount of data exported by users, in order to monitor the memory utilization of the server, the task is queued in the form of q ...

Data structure transformation Preface In production and life, many enterprises use sql database. In business, in order to reduce database access and data transmission to the front, I choose to change the data format Through the two-dimensional data format, it is converted into a tree structure. Since I have been in the position ...

The last one is a brief introduction to SPARQL. This article introduces the basic schema query of SPARQL Still use the example from the previous article: <rdf:RDF xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#' xmlns:vCard='http://www.w3.org/2001/vcard-rdf/3.0#' > <rdf:Description rdf:about="http://somew ...

Environmental Science macOS 10.13.3 docker 17.12.0-ce mysql container information CONTAINER ID: 478bbac9137b IMAGE: mysql:5.7.21 PORTS: 0.0.0.0:3306->3306/tcp NAMES: mysql.5.7.21.plus Preface Currently, you use the MySQL container of docker to use mysql. As long as you run the container, you can use the local t ...