Programmer Group

Today, I wrote something else. I happened to write synchronized. I didn't expect it to fall into the pit. Don't laugh. At first, the code was like this: package com.ripplechan.part_1_2_3; import java.util.concurrent.CountDownLatch; /** * @author RippleChan * @date 2018-09-20 * @time 18:05 */ public class DataTest { publi ...

[TOC] Preface I wrote an article before:< Detailed instruction of JWT for password encryption and microservice authentication> Practical operation (practice example) pom(common), add jwt dependency on the original basis <dependencies> <!--lombok--> <dependency> <groupId>org.projectlomb ...

I. Introduction Let's take a look at the phenomenon. You can go first Here Download the code. A brief introduction to the inner class package com.iceberg.springboot.web; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication //@ComponentScan("com.iceberg.s ...

[CRUD is often written in the project, but in practice, I think if there is a complete code specification, it can be generated automatically and speed up the development efficiency The technical principle of code generator is not complicated. Generally, a template is written to generate a series of codes. I saw that the code genera ...

Remote call 1. overview One project wants to call the functionality of another "User management system" calls "commodity management system", We call it "remote call". At this time, "user management system" is equivalent to simulating "browser". 2. Call mode RPC: the remote call mode of c ...

package com.java.design.java8; import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.context.junit4.SpringRunner; import java.util.Arrays; import java.util.Compar ...

Some time ago, in the development process based on springboot, we encountered a problem: the program needs to read all the files of a directory under resource, and it needs to be able to read them in the form of file. However, after packaging, the springboot project becomes a jar package. When reading the file, an error will be rep ...

In the business scenarios of order and payment, the generation rules and methods of DOC No. are very important. There are many kinds of implementation. The simplest one is based on mysql auto add primary key. The advantages and disadvantages of the scheme are not much discussed, and everyone knows. Today, we implement a distrib ...

mybatis-dsc-generator Perfect integration of lombok, swagger code generation tools, so that you no longer worry about cumbersome comments and simple interface implementation: entity integration, format verification, swagger; dao auto add @ mapper, service auto comment and dependency; controller to achieve single table add / modify, and realize ...

This article collates the jar packages and API records that I often use in Java development. <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 --> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <ve ...