(Solved) How does maven package the project on the Git warehouse (such as an open source project) into a jar package and import it as a dependency into the local project for use

Problem phenomenon:

Today I am thinking: How does maven package the projects on the Git warehouse (such as open source projects) into jar packages and import them into local projects as dependencies for use?

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problem analysis:

This technique is often used: When you need to use some functions of a packaged project to complete the needs of a local project , because the project has many files, you don’t want to copy these files to the local project yourself. this way.

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Solution:

1. First pull the GitHub warehouse project code to the local

Command: git clone git warehouse address

Here is a demonstration of graphical operations based on  IDEA development tools  :

Then open the project.

2. Type the project into a jar package and install it into the maven warehouse

Execute the commands in sequence : mvn clean package -DSkipTests and  mvn clean install -DSkipTests

D:\Github Project\UserAgentParser>mvn clean package -DSkipTests
[INFO] Building jar: D:\Github Project\UserAgentParser\target\UserAgentParser-0.0.1.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 25.845 s
[INFO] Finished at: 2019-04-09T14:57:39+08:00
[INFO] Final Memory: 19M/210M
[INFO] ------------------------------------------------------------------------

D:\Github Project\UserAgentParser>mvn clean install -DSkipTests
[INFO] Installing D:\Github Project\UserAgentParser\target\UserAgentParser-0.0.1.jar to C:\Users\ghc\.m2\repository\com\kumkee\UserAgentParser\0.0.1\UserAgentParser-0.0.1.jar
[INFO] Installing D:\Github Project\UserAgentParser\pom.xml to C:\Users\ghc\.m2\repository\com\kumkee\UserAgentParser\0.0.1\UserAgentParser-0.0.1.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 8.027 s
[INFO] Finished at: 2019-04-09T14:58:51+08:00
[INFO] Final Memory: 19M/217M
[INFO] ------------------------------------------------------------------------

Here is a demonstration of graphical operations based on  IDEA development tools  . Click the operations in the figure in order. Pay attention to the information on the Terminal console  . If BUILD SUCCESS appears, it means success:

3. Add maven dependency in the project pom.xml

You can look at the pom.xml file in the git warehouse project you need to Clone . There will be the following required information in it, just fill it in, such as:

        <dependency>
            <groupId>cn.stephen</groupId>
            <artifactId>DemoProject</artifactId>
            <version>0.0.1</version>
        </dependency>

4. After the dependent package is imported successfully, the functions can be used.