Qt Plugin development guide

Qt plug in Development Guide Author: Wang Tao Date: 2020.02.17 Version: V1.1 Summary Introduction to Qt plug-in Plug-in is a kind of program compiled by following a certain standard application program interface, which is positioned to develop and implement the program which does not have the f ...

Posted on Mon, 17 Feb 2020 01:32:52 -0800 by prem

CentOS 7 installation of PostgreSQL (RPM mode) and common commands

Official course https://www.postgresql.org/download/linux/redhat/ Installation preparation System version: CentOS Linux release 7.3.1611 (Core) Software version: psql (PostgreSQL) 9.6.17 install 1, Check if PostgreSQL is installed rpm -qa | grep postgres #Check if PostgreSQL is installed rpm ...

Posted on Sun, 16 Feb 2020 22:52:18 -0800 by tripodkid

Spring boot classic learning notes

Article directory Introduction: Course Overview 1. What is spring boot 2. Why learn Spring Boot 2.1 from the official point of view of Spring 2.2 from the advantages of Spring Boot 2.2.1 good genes 2.2.2 simplified coding 2.2.3 simplified configuration 2.2.4 simplified deployment 2.2.5 simplified ...

Posted on Sun, 16 Feb 2020 22:07:19 -0800 by thom2002

Spring framework - Part 3

Chapter one: dynamic agent 1.1 - transfer case 1.1.1- demand Account A transfers 100 yuan to account B Account A minus 100 Account B plus 100 1.1.2 - database script CREATE DATABASE IF NOT EXISTS db1 USE db1 CREATE TABLE account( id INT PRIMARY KEY AUTO_INCREMENT, NAME VARCHAR(40), money FLOAT )CHARACTER SET utf8 COLLATE utf8_general_ci; INS ...

Posted on Sat, 15 Feb 2020 23:14:45 -0800 by IceDragon

post request of Ajax

There are four points to pay attention to in ajax get requests: Passing data to the server requires a call to the send (request string data) method Call the setRequestHeader() method to organize the passed data into xml format (passing the data by imitating the form form) The transmitted Chinese information does not need to be ...

Posted on Sat, 15 Feb 2020 08:25:21 -0800 by jon2s

Using eclipse to write a java web program with simple login and registration function in the form of MVC 2

Please pay attention to the version before using. My tomcat is version 9.0, and the notes in it are less, which may be more laborious for novices. First, create a demo database and then a user table in Mysql. The code is as follows create database Demo default charset=utf8; use Demo; create table user ...

Posted on Sat, 15 Feb 2020 08:24:16 -0800 by Webbyturtle

Delete selected actions in table

I. Preface Recently, in the Java Web exercise, there is a requirement to delete the data checked in the table. At this time, you need to obtain which check box is checked and submit it to the servlet to call the method to delete, as shown in the figure Two, train of thought Here, you can add a form label to the outside of the whole form, and ...

Posted on Sat, 15 Feb 2020 06:37:54 -0800 by 99degrees

Servlet&HTTP&Request of Java learning notes

1, The architecture of Servlet 1.Servlet: Interface 2.GenericServlet: abstract class The other methods in the Servlet interface are implemented by default, and only the servlet() method is abstracted. When defining Servlet classes in the future, you can inherit GenericServlet and implement servlet() m ...

Posted on Sat, 15 Feb 2020 01:15:07 -0800 by lawnninja

JDBC operation database 06

There is a problem in synthesizing the jdbc operations in the previous several articles, that is, too many repetitive steps need to be written, which wastes time, so you can write a jdbc tool class, encapsulate some repetitive code, and call directly when necessary Steps: 1. Write the JdbcUtil class as ...

Posted on Fri, 14 Feb 2020 07:11:48 -0800 by p2003morris

Get the background user name and password of the website by detecting sql injection vulnerability through sqlnamp

lnmp environment needs to be built in advance Install sqlmapproject sqlmap [root@ localhost ~]# tar -xvzf sqlmapproject-sqlmap-1.0.9-87-g7eab1bc.tar.gz [root@ localhost ~]# cd sqlmapproject-sqlmap-7eab1bc/ [root@ localhost sqlmapproject-sqlmap-7eab1bc]# python sqlmap.py Unzip DVWA master to the r ...

Posted on Fri, 14 Feb 2020 06:39:42 -0800 by Valdoua