Update maven.yml

.github/workflows/maven.yml

@@ -17,7 +17,7 @@ jobs:
       uses: actions/setup-java@v2
       with:
         java-version: '17'
-        distribution: 'adopt' # Hier wird die fehlende Eingabe "distribution" hinzugefügt
+        distribution: 'adopt'
         server-id: 'github'
         server-username: ${{ github.actor }}
         server-password: ${{ secrets.GITHUB_TOKEN }}
@@ -25,15 +25,22 @@ jobs:
     - name: Build Java project with Maven
       run: mvn clean package
         
+    - name: Check if JAR files exist
+      run: |
+        if [ ! -d "target" ] || [ -z "$(ls -A target/*.jar)" ]; then
+          echo "No JAR files found in target directory or target directory does not exist."
+          exit 1
+        fi
+
     - name: Create builds directory
       run: mkdir -p builds
       
-    - name: Copy built JAR file
+    - name: Copy built JAR files
       run: cp -r target/*.jar builds/
 
     - name: Update version.txt
       run: |
         sed -i 's/old_text/new_text/g' ver/version.txt
         git add ver/version.txt builds/*.jar
-        git commit -m "Updated version and built JAR file"
+        git commit -m "Updated version and built JAR files"
         git push