feat: Add Java Dubbo code generator for Apache Dubbo microservices

.github/workflows/samples-java-dubbo.yaml

@@ -0,0 +1,37 @@
+name: Samples Java Dubbo
+
+on:
+  push:
+    paths:
+      - 'samples/server/petstore/java-dubbo/**'
+  pull_request:
+    paths:
+      - 'samples/server/petstore/java-dubbo/**'
+
+jobs:
+  build:
+    name: Build Java Dubbo
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        sample:
+          # servers
+          - samples/server/petstore/java-dubbo
+    steps:
+      - uses: actions/checkout@v5
+      - uses: actions/setup-java@v5
+        with:
+          distribution: 'temurin'
+          java-version: 17
+      - name: Cache maven dependencies
+        uses: actions/cache@v4
+        env:
+          cache-name: maven-repository
+        with:
+          path: |
+            ~/.m2
+          key: ${{ runner.os }}-${{ github.job }}-${{ env.cache-name }}-${{ hashFiles('**/pom.xml') }}
+      - name: Build
+        working-directory: ${{ matrix.sample }}
+        run: mvn clean package --no-transfer-progress

bin/configs/java-dubbo-server.yaml

@@ -0,0 +1,15 @@
+generatorName: dubbo
+outputDir: samples/server/petstore/java-dubbo
+inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore.yaml
+templateDir: modules/openapi-generator/src/main/resources/java-dubbo
+additionalProperties:
+  hideGenerationTimestamp: "true"
+  artifactId: openapi-dubbo-server-petstore
+  basePackage: "org.openapitools.example"
+  title: "OpenAPI Petstore"
+  serviceInterface: true
+  serviceImplementation: true
+  useTags: true
+  dubboVersion: "3.2.18"
+  javaVersion: "17"
+  registryAddress: "zookeeper://127.0.0.1:2181"

modules/openapi-generator/src/main/resources/META-INF/services/org.openapitools.codegen.CodegenConfig

@@ -27,6 +27,7 @@ org.openapitools.codegen.languages.CSharpClientCodegen
 org.openapitools.codegen.languages.CSharpFunctionsServerCodegen
 org.openapitools.codegen.languages.DartClientCodegen
 org.openapitools.codegen.languages.DartDioClientCodegen
+org.openapitools.codegen.languages.DubboCodegen
 org.openapitools.codegen.languages.EiffelClientCodegen
 org.openapitools.codegen.languages.ElixirClientCodegen
 org.openapitools.codegen.languages.ElmClientCodegen