When I do the project again, the customer needs me to implement a function, probably when adding classifications, if the database has the same classifications, the jsp interface will prompt for information and cannot be added successfully.The results are as follows:
Below is the idea for implementation:
1. First implement an onblur event in ...
Posted by BLeez on Fri, 17 Jul 2020 09:02:47 -0700
Add group groupadd www
Add user WWW: useradd - G www under www group
Modify configuration file nginx.conf :
user www www;
#Set the default type to binary stream
#Specify the hea ...
Posted by ftrudeau on Wed, 01 Jul 2020 08:01:07 -0700
Above (design mode visitor mode): https://blog.csdn.net/qq_16498553/article/details/106934637
What is the business representative model?
What can the business representative model do?
Business representative model class diagram
Source code ...
Posted by rifts on Wed, 24 Jun 2020 19:37:48 -0700
Markdown authoring tool
Idea development tools
GItHub project address
The whole process of class loading and running:
When we use the java command to run the main function of a class to start the program, we first need to load the main class into the JVM through th ...
Posted by khaitan_anuj on Tue, 23 Jun 2020 03:23:00 -0700
Day 14 of Kite's learning framework
1. Spring MVC interceptor
Introduction: Spring MVC's processor interceptor is similar to the Filter in Servlet development, which is used for preprocessing and postprocessing the processor. Users can define some interceptors to implement specific functions. When i ...
Posted by Tilemachos on Fri, 19 Jun 2020 20:50:36 -0700
Spring MVC core technology
1, Request redirection and forwarding
When the processor finishes processing the request and jumps to other resources, there are two ways: request forwarding and redirection. According to the type of resources to jump, it can be divided into two categories: jump to page an ...
Posted by classifieds100 on Tue, 16 Jun 2020 20:48:28 -0700
Design and implementation of book management system
The structure of library staff is complex, the number of staff is limited, and it involves a wide range of aspects. If manual operation is also used to deal with the problem of book borrowing, the work will be very tedious, requiring a lot of manpow ...
Posted by unplugme71 on Sun, 14 Jun 2020 23:18:20 -0700
1. What is a filter?
In the process of client to server, when sending a request, if there is non-conforming information, it will be intercepted by the filter, if it is conforming, it will be released, and when the server responds to the client, it will also be judged that if there is non-conforming in ...
Posted by chadrt on Sun, 14 Jun 2020 21:23:07 -0700
7. Using regular expressions in Python
7.1 regular expression
When dealing with strings, we often use the need to find strings that meet some complex rules. Regular expressions are tools for describing these rules. Regular expressions are the code used to record text rules.
7.1.1 line locator
Posted by philipolson on Sat, 13 Jun 2020 04:41:18 -0700