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This article is to share with you about the use of Maven, the editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article. Let's take a look at it with the editor.

1. Download the jar package

The maven project will have a pom.xml file, in which, as long as you add the corresponding configuration, he will automatically download the corresponding jar package for you. You don't have to search everywhere for the jar package you need.

The following is the demonstration configuration file pom.xml

4.0.0 exam exam_3 war 0.0.1-SNAPSHOT junit junit 3.8.1 test org.springframework spring-web 3.0.5.RELEASE org.springframework spring-webmvc 3.0.5.RELEASE

The contents of the nodes above are mainly seen.

One for each configuration.

Org.springframework project name

Spring-webmvc project module

3.0.5.RELEASE project version

Maven will use the project name-project module-project version to maven to download the corresponding jar package from the code base on the Internet.

So this is one of the functions of maven to help you download the jar package.

2. Find dependencies and help you download dependencies

Looking for jar packages is the first basic function, and looking for dependencies on this is based on this function.

In maven's code base, each jar package also has its own pom.xml file, and this file will also have configuration, what dependency scope I will not elaborate on, what I want to express is that as long as you configure the jar package depends on other jar packages will be automatically downloaded by maven.

For example, you have configured

Org.springframework spring-core 2.6

You want maven to help you download the spring-core-2.6.jar package.

And the commons-logging.jar package is needed in this jar package.

This is called dependency, and spring-core-2.6.jar depends on commons-logging.jar.

This is the second function of maven to help you download dependency packages.

3. Hot deployment, hot compilation

It means that when your web project is already running, the code changes can be directly accepted by the web server, so you don't need to restart the server or redeploy the code, and you can package the war or jar project directly through maven.

The above is the use of Maven, the editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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