# 60.6 Google Cloud

谷歌云有几个用于启动Spring Boot应用程序的选项。最简单的入门方法可能是App Engine，但是你也可以找到用Container Engine在容器中运行Spring Boot的方法，或者用Compute Engine在虚拟机中运行Spring Boot的方法。

要在App Engine中运行，你可以首先在UI中创建一个项目，它为您设置一个惟一的标识符，并设置HTTP路由。将一个Java应用程序添加到项目中，并保持它为空，然后使用[谷歌云SDK](https://cloud.google.com/sdk/downloads)将你的Spring Boot应用程序从命令行或CI构建推入该位置。

App Engine需要你创建一个`app.yaml`文件来描述应用程序所需的资源。通常，你把这个文件放在`src/main/appengine`，它应该类似于以下文件:

```
service: default

runtime: java
env: flex

runtime_config:
  jdk: openjdk8

handlers:
- url: /.*
  script: this field is required, but ignored

manual_scaling:
  instances: 1

health_check:
  enable_health_check: False

env_variables:
  ENCRYPT_KEY: your_encryption_key_here
```

你可以通过将项目ID添加到构建配置中来部署应用程序(例如，使用Maven插件)，如下面的示例所示：

```markup
<plugin>
    <groupId>com.google.cloud.tools</groupId>
    <artifactId>appengine-maven-plugin</artifactId>
    <version>1.3.0</version>
    <configuration>
        <project>myproject</project>
    </configuration>
</plugin>
```

然后使用`mvn appengine:deploy`进行部署（如果需要首先进行身份验证，则构建将失败）。

**注** 谷歌App Engine Classic与Servlet 2.5 API绑定在一起，因此如果不进行一些修改，就不能在那里部署Spring应用程序。请参阅本指南的[Servlet 2.5部分](https://docs.spring.io/spring-boot/docs/2.0.0.RELEASE/reference/htmlsingle/#howto-servlet-2-5)。


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