Programmer Group

I used to use the Android native Toast. I feel that there is no need to work hard on it. When I saw the Toast, it was immediately circled. It's really beautiful. Project address As we all know, the usage of Android native Toast is 1 Toast.makeText(MainActivity.this,"Toast show contents",Toast.LENGTH_SHORT).show(); Method is divided into Co ...

1.0 integration preparation The gradle remote warehouse depends on. Open the project and find the build.gradle file of the app. Add the following configuration: Add maven warehouse address: repositories { maven { url "http://maven.aliyun.com/nexus/content/repositories/releases" } } Add grad ...

This is the first article to understand the Spring proxy mechanism, trying to understand how Spring implements Bean registration and proxy. This article will raise the question: will Spring register beans and create proxy objects with Jdk proxy or cglib? 1 project preparation 1.1 create a Spring Boot project Create a Spring Boot project that ...

First of all, a question is raised. Why do we separate the jar package? The reason is very simple. The jar files that we use the spring boot maven plugin plug-in to package are usually large, or tens of meters less. If the external network transmission of the upload cloud server is slow, why the files will be large after packaging? This is bec ...

The Maven project in Eclipse should have a library called Maven Dependencies, as follows: In the Configure Build Path interface, Maven Dependencies: Sometimes the library disappears. It's useless to click Add Library in the Configure Build Path interface. I tried several times and failed to add it There are two correct w ...

After checking the usage of JMH, many blogs have to be very complicated. This step is quite simple for me Using Intellij IDEA2018.2 as the integrated development environment, JMH version is 1.21 Note that when building a project, you must create a maven project and directly import the two jar s, jmh core and jmh generator ann ...

By default, the plug-in spring boot Maven plugin packages the whole project into a Jar package that can run (the so-called Flat Jar), resulting in a large Jar package (usually dozens of M +). Nowadays, there are many things in iterative publishing. It will waste a lot of time to upload such a huge file every time, and sometimes there will be er ...

When we call an interface, we may fail for network reasons and try again successfully. This is the retry mechanism.Be careful to use retries when they are not idempotent. tips: idempotency Idempotency is defined in HTTP/1.1 as requesting a resource once or more should have the same result for the resource itself (except for problems such as net ...

In order to facilitate development, we usually use SNAPSHOT version. After stage development, we need to change SNAPSHOT to release version (such as 1.0.0.SNAPSHOT - "1.0.0) to prevent online environment from being damaged. The manual step is to delete the SNAPSHOT, then tag the code (for backup), then mvn deploy uploads the release versio ...

One background Recently, we are using spring boot to develop project A, which introduces module B developed by small partners. It starts service locally and runs well. When it is deployed to the server, an error will be reported as soon as it runs: Caused by: java.lang.ClassNotFoundException. Note: there are many reasons for this error, such as ...