デフォルトのデプロイ動作を変更するには、appengine:deploy コマンドでパラメータを渡します。たとえば、次のコマンドでは、pom.xml ファイルで定義されたサービスを特定の Google Cloud プロジェクトにデプロイし、そのサービスにカスタム バージョン ID を割り当て、新しいバージョンの自動トラフィック ルーティングを無効にします。
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["わかりにくい","hardToUnderstand","thumb-down"],["情報またはサンプルコードが不正確","incorrectInformationOrSampleCode","thumb-down"],["必要な情報 / サンプルがない","missingTheInformationSamplesINeed","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-09-04 UTC。"],[[["\u003cp\u003eApache Maven is a Java build automation tool, and the App Engine Maven plugin facilitates building and deploying Java applications to App Engine.\u003c/p\u003e\n"],["\u003cp\u003eBefore using the plugin, ensure Maven version 3.9.1 or newer is installed, and that the gcloud CLI and \u003ccode\u003eapp-engine-java\u003c/code\u003e component are also installed.\u003c/p\u003e\n"],["\u003cp\u003eThe App Engine Maven plugin is added to a project by modifying the \u003ccode\u003epom.xml\u003c/code\u003e file, specifying the \u003ccode\u003ecom.google.cloud.tools:appengine-maven-plugin\u003c/code\u003e with version \u003ccode\u003e2.8.1\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe command \u003ccode\u003emvn package appengine:deploy -Dapp.deploy.projectId=PROJECT_ID\u003c/code\u003e builds, packages, and deploys the application to App Engine, with the option to omit \u003ccode\u003e-Dapp.deploy.projectId\u003c/code\u003e if already specified in the \u003ccode\u003epom.xml\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eDeployment behavior can be customized using parameters in the \u003ccode\u003eappengine:deploy\u003c/code\u003e command, such as specifying a project ID, custom version ID, or disabling automatic traffic routing.\u003c/p\u003e\n"]]],[],null,["# Using Apache Maven and the App Engine Plugin\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\n[Apache Maven](http://maven.apache.org/) is a\nbuild automation tool for Java.\n\nApp Engine provides a Maven plugin that you can use to build and deploy\nyour app to App Engine. The plugin does not support Enterprise\nApplication Archive (EAR) projects.\n| **Note:** For information about other ways to build and deploy your app, see [Testing and deploying your app](/appengine/docs/standard/testing-and-deploying-your-app).\n\nBefore you start\n----------------\n\n1. Determine if Maven is installed and which version you have by running\n the following command:\n\n mvn -v\n\n If Maven is installed, a long string of information beginning with\n `Apache Maven` and followed by a version number such as `3.9.1` will\n display.\n2. If you don't have Maven 3.9.1 or newer installed:\n\n 1. [Download](https://maven.apache.org/download.cgi) Maven 3.9.1 or newer.\n 2. [Install](https://maven.apache.org/install.html) Maven 3.9.1 or newer.\n\n | **Note:** Linux users might need to download Maven instead of using `apt-get install` to install Maven 3.9.1 or newer.\n3. If you haven't already done so, follow the steps\n [here](/appengine/docs/standard/setting-up-environment)\n to download the gcloud CLI, create your Google Cloud project, and\n initialize your App Engine app.\n\n4. Install the gcloud CLI `app-engine-java` component:\n\n gcloud components install app-engine-java\n\nAdding the App Engine Maven plugin\n----------------------------------\n\nTo use the [App Engine Maven plugin](https://github.com/GoogleCloudPlatform/appengine-plugins/tree/main/app-maven-plugin), add the following lines to the `plugins` section in\nyour project's `pom.xml` file: \n\n \u003cplugin\u003e\n \u003cgroupId\u003ecom.google.cloud.tools\u003c/groupId\u003e\n \u003cartifactId\u003eappengine-maven-plugin\u003c/artifactId\u003e\n \u003cversion\u003e2.8.1\u003c/version\u003e\n \u003c/plugin\u003e\n\n| **Note:** If there is a newer version of the App Engine Maven plugin, you should upgrade to the [latest version](http://mvnrepository.com/artifact/com.google.cloud.tools/appengine-maven-plugin).\n\nBuilding and deploying your app\n-------------------------------\n\nAfter you add the App Engine Maven plugin to your project's `pom.xml`\nfile, you can use the following command to build deploy your app: \n\n```\nmvn package appengine:deploy -Dapp.deploy.projectId=PROJECT_ID\n```\n\nReplace \u003cvar translate=\"no\"\u003ePROJECT_ID\u003c/var\u003e with the ID of your Google Cloud project. If\nyour `pom.xml` file already\n\n[specifies your\nproject ID](/appengine/docs/standard/java-gen2/maven-reference#appenginedeploy)\n, you don't need to include the `-Dapp.deploy.projectId` property in the\ncommand you run.\n\nThe `package` goal builds and packages your app, and the\n\n[`appengine:deploy` goal](/appengine/docs/standard/java-gen2/maven-reference#appenginedeploy)\n\ndoes the following:\n\n1. Generates a unique version ID for the new version of your app.\n\n2. Deploys the new version to App Engine.\n\n3. Routes all traffic to the new version.\n\nChanging the deployment defaults\n--------------------------------\n\nYou can change the default deployment behavior by passing parameters in the\n`appengine:deploy` command. For example, the following command deploys the\nservice defined in your `pom.xml` file to a specific Google Cloud project,\nassigns a custom version ID to the service, and turns off automatic traffic\nrouting for the new version: \n\n```bash\nmvn appengine:deploy -Dapp.deploy.projectId=PROJECT_ID -Dapp.deploy.version=VERSION_ID -Dapp.deploy.promote=False\n```\n\nYou can also use the `appengine:deploy` command to deploy configuration files,\nsuch as `cron.yaml`, `dispatch.yaml`, and `index.yaml`.\n\nFor more information, see the `appengine:deploy`\n\n[reference](/appengine/docs/standard/java-gen2/maven-reference#appenginedeploy)\n.\n\nWhat's next\n-----------\n\n- Review the [JDK 21 App Engine Maven plugin sample](https://github.com/GoogleCloudPlatform/java-docs-samples/tree/main/appengine-java21/helloworld).\n- Explore the plugin code and report issues on [GitHub](https://github.com/GoogleCloudPlatform/app-maven-plugin).\n- Learn how to specify parameters for tasks by referring to [App Engine Maven Goals and Parameters](/appengine/docs/standard/java-gen2/maven-reference#appenginedeploy)."]]