migrate project to maven

Author: bnasslahsen

.travis.yml

@@ -1,9 +1,10 @@
-dist: trusty
 language: java
-install: true
-
 jdk:
-  - oraclejdk8
+  - openjdk8
+cache:
+  directories:
+    - $HOME/.m2
+    - $HOME/.sonar/cache
 
 addons:
   sonarcloud:
@@ -12,14 +13,11 @@ addons:
       secure: "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"
 
 script:
-  - 'if [ "$TRAVIS_PULL_REQUEST" = "false" ]; then bash ./gradlew build sonarqube publish; fi'
-  - 'if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then bash ./gradlew build; fi'
+  - mvn clean package sonar:sonar -Dsonar.projectKey=springdoc_springdoc-openapi --settings settings.xml
 
-before_cache:
-  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
-  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
-
-cache:
-  directories:
-    - $HOME/.gradle/caches/
-    - $HOME/.gradle/wrapper/
+deploy:
+  provider: script
+  script: mvn deploy -DskipTests --settings settings.xml
+  on:
+    branch: master
+