It is necessary to understand PHP code security

The attacker sends malicious SQL commands to the database through construction. If the program does not perform judgment filtering on the SQL commands entered by the user, the generated SQL statements may bypass the security check, insert other statements used to modify the back-end database, and may execute system commands, thus causing harm t ...

Posted on Thu, 14 Nov 2019 05:46:29 -0800 by bhagwat

Mybatis custom TypeHandler solves special type conversion problems

We know that the data types in Java and MySQL are different. In addition to the basic data types, there are also objects in Java. Sometimes when using MySQL to store data or read data from MySQL, there are some special requirements, such as: The Integer array is directly stored in MySQL and saved in the form of BLOB. When it is read out, it is ...

Posted on Thu, 14 Nov 2019 04:05:41 -0800 by ShadowX

Foreign key Association and many to many relationship between ORM tables of Django

Implementation environment table structure: Model.py form creation and code from django.db import models # Create your models here. class Publisher(models.Model): id = models.AutoField(primary_key=True) name = models.CharField(max_length=64,null=False,unique=True) def __str__(self): return "publisher_name:{}".format(sel ...

Posted on Wed, 13 Nov 2019 06:39:15 -0800 by snowgirl

Open Source Project: Zhang Shuai's Personal Blog

[Actual Warfare] How to quickly create dynamic web pages through html+css+mysql+php (listed as making a blog site) To complete the school's final course design, it took nearly two months of leisure to create a simple blog site.Next, I will describe the process of these days. At the end of the text, some code will be pasted and a download link w ...

Posted on Tue, 12 Nov 2019 17:56:30 -0800 by jorje

Qt Write Gas Safety Management System 5-Data Monitoring

1. Preface This project has four view modes to monitor the device, which can be switched arbitrarily. Data monitoring, map monitoring, device monitoring, curve monitoring, among which data monitoring is the most common, so it also ranks first in the main interface navigation. Many gas safety or configuration monitoring software are observed and ...

Posted on Tue, 12 Nov 2019 17:50:42 -0800 by elklabone

tornado connecting to database

ORM Object Relational Mapping (ORM, or O/RM, or O/R mapping for short) is a kind of program technology, which is used to realize the conversion of data between different types of systems in object-oriented programming language. In effect, it creates a virtual object database which can be used in programming language. Through OR ...

Posted on Tue, 12 Nov 2019 12:15:59 -0800 by ianr

Technology sharing | MySQL: timestamp time zone conversion leads to high CPU% sy

Author: Gao Peng At the end of the article, there is his book "in-depth understanding of MySQL master-slave principle 32", in-depth understanding of MySQL master-slave, GTID related technical knowledge. This is a learning record. Please understand if there is any mistake. This problem was encountered by a friend @ Fengyun , and thi ...

Posted on Tue, 12 Nov 2019 02:01:45 -0800 by mars16

Mybatis Type Processor

Preface Above How Mybatis XML maps to methods Type processors are described, which are used in two places to set parameters to the database and to retrieve data from the result set. Specific type processors are retrieved from the type registrar according to different data types and processed separately. This article will focus on type processor ...

Posted on Mon, 11 Nov 2019 18:57:47 -0800 by Rob the R

java connect database

This time, I want to record the connection between java and database and display the data. The effect start interface is as follows   This application uses MySQL to access the database, which contains a students class. The code is as follows CREATE TABLE students( id serial NOT NULL, name character VARCHAR(10), age int, ...

Posted on Mon, 11 Nov 2019 13:18:07 -0800 by pestilence669

02 hibernate API details

02 hibernate API details Detailed explanation of hibernate framework API Configuration object Configuration function: Configuration loading class, used to load the main configuration and orm metadata package com.qingzi.text.b_api; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; import org.juni ...

Posted on Mon, 11 Nov 2019 08:10:17 -0800 by raman