The core idea of Spring is summed up very well!

Author: Java program yuanhuanhuanhttps://blog.csdn.net/Lubanjava/article/details/100084602 Dependency injection is an embodiment of face-to-face interface programming and the core idea of Spring. In fact, dependency injection is not an advanced technology, but it's a little mysterious to be packaged by Spring. class Main {     interface Lang ...

Posted on Thu, 18 Jun 2020 03:36:10 -0400 by Stille

Spring learning -- interceptor of Spring MVC

Before learning the development of interceptors, we need to make clear the difference between filters and interceptors, and find a blog that speaks clearly. You can refer to it. Difference between interceptor and filter Article catalog 1, Development interceptor class 2, Configure interceptors 3, Test ...

Posted on Thu, 18 Jun 2020 02:49:34 -0400 by kituscat

Common file processing commands in python

0 foreword Recently, I've been dealing with the reading and processing of data sets. It's inevitable to use the knowledge points of file processing in python. Although some functions and knowledge points know what's going on, they don't feel that they have a solid grasp. Therefore, I plan to sort ou ...

Posted on Thu, 18 Jun 2020 01:14:11 -0400 by k_ind

Input box for Android development EditText

Now let's briefly introduce the technical points: 1. How to use fillet input box and button background 2. How to realize the vertical line behind "mobile number" and "password" 3. How to nest the layout of input boxes 4. How to listen to the input events of the input box and the dyna ...

Posted on Wed, 17 Jun 2020 22:12:59 -0400 by robinjohn

Introduction to Spring MVC

Introduction to Spring MVC It is better to have a spring foundation to learn Spring MVC, because Spring MVC also uses spring's IOC technology when creating objects. The role of Spring MVC: Spring MVC is the framework of presentation layer in ssm framework, which is mainly used for the purpose of inter ...

Posted on Wed, 17 Jun 2020 03:45:34 -0400 by jhoop2002

My development diary

Today, I mainly did the basic data management of the test user module, and encountered a relatively large problem. The user attributes are all IDS, but they need to be converted to the corresponding string type when returned to the front end, and then there are various kinds of validation of non mandatory parameters. A complex SQL, especially i ...

Posted on Tue, 16 Jun 2020 00:46:03 -0400 by RynMan

Spring AOP Learning Notes 03: Acquisition Enhancer for Core Implementation of AOP

  Above Describes how spring opens AOP, simply by registering the AnnotationAwareAspectJAutoProxyCreator class with the container, because this class eventually implements the BeanPostProcessor interface and completes the creation of the AOP proxy object in its postProcessAfterInitialization() method when the bean init method is executedAfter ...

Posted on Mon, 15 Jun 2020 22:49:31 -0400 by sm

AJAX and JSON in java learning

Let's talk about A jax and JSON today. In the process of project construction, the technology of ajax is generally used for front and back platform interaction, and the data of front and back interaction is made with json. Let's take a look at what ajax and json are. Ajax 1. What is ajax? AJAX is a t ...

Posted on Mon, 15 Jun 2020 05:12:34 -0400 by reliable

Wechat code scanning payment (detailed code)

Wechat code scanning payment Recently, when the project was rebuilt, she was responsible for the payment module. WeChat scan code payment (NATIVE) and Alipay scan code payment were also the first contact. Although it was written out according to official documents and some blogs, there were many proble ...

Posted on Mon, 15 Jun 2020 04:48:05 -0400 by ams007

hadoop high availability installation (HA)

High availability hadoop installation HA Write at the beginning Installation procedure 1. Distribute JDK 1.1 install jdk 2. Synchronization time 3. Configuration file check before installation 4. Secret key free settings of NN and other three machines 5. No secret key between two NN 6. Modify some c ...

Posted on Mon, 15 Jun 2020 03:30:10 -0400 by ludachris