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What is the method for java SpringBoot to integrate MyBatisPlus?

1. What is springboot autowiring? Automatic assembly is the core of springboot. Generally speaking, automatic assembly will be associated with springboot. In fact, Spring Framework has already implemented this function. SpringBoot only made further optimization based on it through SPI. SpringBoot defines a set of interface specifications. This set of specifications stipulates that when SpringBoot starts, it will scan the META-INF/spring.factories file in the external reference jar package and load the type information configured in the file into the Spring container (relevant here) JVM class loading mechanism and Sp

May 10, 2023 pm 11:34 PM

JavaSpringBootmybatisplus

How to configure mybatis and transaction management in springboot

1. Configuration of springboot and mybatis 1. First, all the dependencies required by springboot to configure mybatis are as follows: org.springframework.bootspring-boot-starter-parent1.5.1.RELEASEorg.springframework.bootspring-boot-starter-web1.5.1.RELEASEorg. mybatis.spring.bootmybatis-spring-boot-starter1.2.0com.oracleojdbc

May 10, 2023 pm 07:13 PM

SpringBootmybatis

How to use java to get website login verification code

Verification code generation is achieved using the easy-captcha toolkit. First, you need to add relevant dependencies to pom.xml. The code is as follows: com.github.whvcseeasy-captcha1.6.2 verification code format. The easy-captcha verification code tool supports GIF and Chinese. , arithmetic and other types, respectively implemented through the following instance objects: SpecCaptcha (PNG type static picture verification code) GifCaptcha (Gif type picture verification code) ChineseCaptcha (GIF type Chinese picture verification code) ArithmeticCaptcha (arithmetic type picture verification code ) character type

May 10, 2023 pm 06:28 PM

Java

How Spring Boot uses SSE to push data to the front end

Preface SSE is simply a technology where the server actively pushes data to the front end. It is one-way, which means that the front end cannot send data to the server. SSE is suitable for message push, monitoring and other scenarios that only require server push data. The following is a simple simulation using SpringBoot to push progress data to the front end, and the front end page displays the progress bar after accepting it. When using the server in SpringBoot, you need to pay attention. It is best to use the SseEmitter class provided by SpringWeb for operation. At the beginning, I used the method mentioned on the Internet to set the Content-Type to text-stream and found that every time the front end All connections will be re-created. most

May 10, 2023 pm 05:31 PM

SpringBootSSE

How Springboot implements video upload and compression functions

1. Define the video upload request interface publicAjaxResultvideoUploadFile(MultipartFilefile){try{if(null==file||file.isEmpty()){returnAjaxResult.error("The file is empty");}StringossFilePrefix=StringUtils.genUUID();StringfileName =ossFilePrefix+"-"+file.getOriginalFilename(

May 10, 2023 pm 05:16 PM

SpringBoot

How to use SpringBoot to implement a timer

The Springboot startup class code for the implementation of timer adds the @EnableScheduling annotation to enable the timer function @SpringBootApplication@EnableScheduling//Enable the timing function publicclassApplication{publicstaticvoidmain(String[]args){SpringApplication.run(Application.class,args);} }Scheduling task code, the task class needs to be injected into the IoC container through the @Component annotation @Componen

May 10, 2023 pm 02:58 PM

SpringBoot

Redis Java connection method

1. Java connection pool connection (pipeline, lua) adds the following dependencies: redis.clientsjedis2.9.01, TestpublicclassTest{publicstaticvoidmain(String[]args){JedisPoolConfigjedisPoolConfig=newJedisPoolConfig();jedisPoolConfig.setMaxTotal(20);jedisPoolConfig.setMaxIdle(10); jedisPoolConfig.setMinIdle(5);

May 04, 2023 pm 02:52 PM

Javaredis

How does android studio upload pictures to java server

1.build.gradle configuration (increase) dependencies{implementation'com.squareup.okhttp3:okhttp:4.9.0'implementation'org.conscrypt:conscrypt-android:2.5.1'} 2.AndroidManifest.xml configures permissions in the application Add android:usesCleartextTraffic="true&q

Apr 28, 2023 pm 09:07 PM

AndroidJavastudio

Analysis of Java lock usage scenarios at work

1. SynchronizedSynchronized is a reentrant exclusive lock. It has a similar function to ReentrantLock lock. Any place where synchronized is used, ReentrantLock can be used instead. The biggest similarity between the two is: reentrant + exclusive lock, both The main differences are as follows: ReentrantLock has richer functions, such as providing Condition, a locking API that can be interrupted, and can satisfy complex lock + queue scenarios, etc.; ReentrantLock has fair locks and unfair locks, while synchronized has both Right and wrong lock; the usage postures of the two are also different, Ree

Apr 28, 2023 pm 03:34 PM

Java

How to develop Java 8 Spring Boot applications in Docker

First, let's check the docker-compose file: version:'2'services:springappserver:build:context:.dockerfile:springapp.dockerfileports:-"8080:8080"networks:-net-spring-dbvolumes:-.:/ vol/developmentdepends_on:-mysqldbservermysqldbserver:build:co

Apr 27, 2023 pm 11:49 PM

DockerJavaspring boot

How to implement hexagonal architecture using Java?

Hexagonal architecture is a design style that uses layering to isolate core logic from external objects. Its core logic is the business module, and external elements are integration points, such as databases, external APIs, interfaces, etc. It divides the software into internal and external parts. The internal part contains the core business logic and domain layer (the so-called layered architecture), and the external part contains interfaces, databases, messaging and other contents. Internals and externals communicate with each other through ports and adapters. *Translation Note: Hexagonal Architecture (Hexagonal Architecture) was proposed by Alistair Cockburn to solve the problems caused by the traditional layered architecture. * 1. Advantages Software developed using hexagonal architecture is independent of channels and therefore can support multiple channels

Apr 23, 2023 pm 01:25 PM

Java

Java code writing skills example analysis

Development Tools I don’t know how many “old” programmers are still using Eclipse. These programmers are either stuck in the old ways or simply don’t know the existence of other good development tools. Eclipse suffers from memory lag and various other problems. Occasionally, the appearance of inexplicable exceptions tells us that it is time to look for new development tools. I don’t want to explain more about what kind of IDE to change when changing IDE. If you want to become an excellent Java programmer, please change to IntelliJIDEA. For the benefits of using IDEA, please search Google. Don't tell me that the shortcut keys don't work. Changing IDE is not the focus of this article, so I don't want to spend too much space writing about why I changed IDE. Here, I can only tell you, change the IDE

Apr 18, 2023 pm 10:58 PM

Java

What is the most commonly used technology stack for Java?

Commonly used technology stacks in Java include: 1. JDK; 2. Web framework; 3. Web container; 4. ORM framework; 5. Spring; 6. Database; 7. Search engine; 8. Back-end template engine; 9. Workflow ; 10. Other language middleware, such as Kafka, RocketMQ or RabbitMQ, etc. Inventory of commonly used technology stacks for Java development 1. Introduction Recently, many people have privately asked me about the commonly used Java development technology stacks, so today I will summarize a wave of commonly used Java technology stacks. 2. Most of the JDK versions of JDK have been moved to 8. Those who use 11 are ahead of the curve. Please look for the LTS version! No

Apr 14, 2023 pm 09:43 PM

Java

Analyze how vue sends a request to the springboot program

Vue is a popular JavaScript framework that can be used to build single-page applications. Spring Boot is a popular Java framework for building web applications. In many cases, front-end applications need to send HTTP requests to back-end applications to obtain data or perform operations. This article will introduce how to send requests to Spring Boot applications in Vue applications. The following are the steps to implement: ## 1. Install AxiosAxios is a popular JavaScript

Apr 10, 2023 am 09:05 AM