Add support to build a execuable jar

.github/workflows/build.yaml

@@ -0,0 +1,34 @@
+# This workflow will build a package using Maven and then publish it to GitHub packages when a release is created
+# For more information see: https://github.com/actions/setup-java/blob/main/docs/advanced-usage.md#apache-maven-with-a-settings-path
+
+name: Maven Package
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 11
+        uses: actions/setup-java@v2
+        with:
+          java-version: '11'
+          distribution: 'adopt'
+          server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
+          settings-path: ${{ github.workspace }} # location for the settings.xml file
+
+      - name: Build with Maven
+        run: mvn -B package --file pom.xml
+
+      - name: Publish to GitHub Packages Apache Maven
+        run: mvn deploy -s $GITHUB_WORKSPACE/settings.xml
+        env:
+          GITHUB_TOKEN: ${{ github.token }}

README.md

@@ -10,3 +10,14 @@ According to different use cases, we provide several Jenkinsfile for you:
 |[Jenkinsfile.jmeter.groovy](Jenkinsfile.jmeter.groovy)|A kubernetes environment|Running a JMeter test in Jenkins|
 |[Jenkinsfile-milestone.groovy](Jenkinsfile-milestone.groovy)|None|Abort running build if new one is started|
 See also https://jenkins-zh.cn/about/course/#1
+
+# Jar
+
+You can run it via the following:
+
+```
+mvn package
+java -jar target/demo-junit-1.0.1-20170422.jar
+```
+
+# War

pom.xml

@@ -25,6 +25,29 @@
                     <target>7</target>
                 </configuration>
             </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>make-a-jar</id>
+                        <phase>compile</phase>
+                        <goals>
+                            <goal>jar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+                <configuration>
+                    <archive>
+                        <manifest>
+                            <addClasspath>true</addClasspath>
+                            <mainClass>
+                                cli.App
+                            </mainClass>
+                        </manifest>
+                    </archive>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
 

src/main/java/cli/App.java

@@ -0,0 +1,10 @@
+package cli;
+
+/**
+ * This is a demo for Java executable jar
+ */
+public class App {
+    public static void main(String[] args) {
+        System.out.println("Env: NAME=" + System.getenv("NAME"));
+    }
+}