In our regular business processing, most of the internal processing interfaces are database-related and based on the Winform development framework of hybrid development. Although when the client calls, the general choice is also based on Web API calls, but the back-end We may not only process our business database, but also call other external interfaces, […]
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Windows enumerates device information
Enumeration of device information is mainly implemented through the interface in the SetupAPI module, in conjunction with the corresponding device class GUID. Here we take enumerating USB device information as an example, including device instance addresses, etc.: #include <stdio.h> #include <Windows.h> #include <SetupAPI.h> #pragma comment(lib, “SetupAPI.lib”) #include <devguid.h> // The specific device GUID requires initguid, […]
MyBatis Plus integrates Redis to implement distributed second-level cache
MyBatis cache description MyBatis provides two levels of cache, namely first-level cache and second-level cache. The first-level cache is a SqlSession-level cache. It only stores cached data inside the SqlSession object. If the SqlSession objects are different, the cache cannot be hit. The second-level cache is a mapper-level cache. As long as the Mapper class […]
The use of foreign keys and foreign key constraint strategies in MySQL
1. The concept of foreign key constraints Foreign key constraint (FOREIGN KEY, abbreviated as FK is a concept of database design, it ensures that the relationship between two tables maintains data consistency and integrity. Foreign key means that a field in the table depends on the value of a field in another table, and the […]
[Springboot] Based on annotation development Springboot-Vue3 integrates Mybatis-plus to implement paging query (2) – front-end el-pagination implementation
Series of articles [Springboot] Based on annotation development Springboot-Vue3 integrates Mybatis-plus to implement paging query – back-end implementation Article directory Series of articles system version Implement function Implementation ideas Data format passed in from backend frontendel-table Encapsulate axois interface Introducing the el-pagination paging component of Element-plus Axois gets background data System version Backend: Springboot 2.7, […]
IDEA integrates Hadoop3.x under Windows
1. Hadoop development package download 1.1 Download the corresponding hadoop development package on the windows system, for example: hadoop3.3.5 version 1.1 Unzip the development package and rename it 2. Patch 2.1 Since it is a windows development system, some patches need to be installed to run normally. Install them in the bin directory of hadoop. […]
Parse html to generate Word document
Content: Read the text content in the html file, and then generate a Word document for export. Case scenario: After the requirement development is completed, a document (code modification list) needs to be written. The content of the document is all the codes modified/added this time. The modified file paths and code snippets need to […]
SpringBoot–middleware technology-3: Integrate mongodb, integrate ElasticSearch, attached case with code (simple and easy to understand)
SpringBoot integrates mongodb Implementation steps: pom file import coordinates <!–mongo–> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-mongodb</artifactId> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> Yaml configuration file configures mongodb: spring: data: mongodb: uri: mongodb://localhost/spring Just create a pojo @Data @NoArgsConstructor @AllArgsConstructor public class Book {<!– –> private int id; private String name; […]
“The charm of the GUI graphical interface, the secure communication of the SSH protocol and the efficient development of IDEA integrated with Git”
Article directory introduction 1. Practical application of GUI graphical interface 2. Secure communication using SSH protocol What is SSH? git/github generates the key and passes Remote github warehouse configuration 3. Quick start guide for integrating Git with IDEA Summarize Introduction In the field of computer science, a graphical user interface (GUI) is a user interface […]
SpringBoot2.X integration integrates Dubbo
Environment installation Dubbo uses zookeeper as the registration center. You must first install zookeeper. Install zookeeper on Windows as follows: https://blog.csdn.net/qq_33316784/article/details/88563482 Install zookeeper on Linux as follows: https://www.cnblogs.com/expiator/p/9853378.html SpringBoot new project If you still don’t know how to create a new SpringBoot project, you can refer to: https://www.cnblogs.com/expiator/p/15844275.html Service providerDubbo-provider Created dubbo-provider module as a […]