迁移到Google Cloud Endpoint Framework以Java

Question

我有一个现有的基于Gradle的多模块Google App Engine（GAE）项目，该项目最初基于https://github.com/GoogleCloudPlatform/appengine-modules-sample-java.

该项目有Cloud Endpoint for App Engine，我正在将其迁移到Cloud Endpoint Framework（"云endpoint版本2"）。我遵循了https://cloud.google.com/endpoints/docs/frameworks/java/required_files，这意味着我改变了这些：

建筑格拉德尔

+       compile 'com.google.endpoints:endpoints-framework-auth:1.0.0-beta.10'
+       compile 'com.google.endpoints:endpoints-management-control-appengine:1.0.0-beta.10'

appengine网站。xml

+       <env-variables>
+               <env-var name="ENDPOINTS_SERVICE_NAME" value="myproject.appspot.com" />
+       </env-variables>

网状物xml

+       <!-- Endpoints service config from service management -->
+       <filter>
+               <filter-name>endpoints-api-configuration</filter-name>
+               <filter-class>com.google.api.control.ServiceManagementConfigFilter</filter-class>
+       </filter>
+       <filter-mapping>
+               <filter-name>endpoints-api-configuration</filter-name>
+               <servlet-name>api</servlet-name>
+       </filter-mapping>
+
+       <!-- Endpoints logging and monitoring -->
+       <filter>
+               <filter-name>endpoints-api-controller</filter-name>
+               <filter-class>com.google.api.control.extensions.appengine.GoogleAppEngineControlFilter</filter-class>
+               <init-param>
+                       <param-name>endpoints.projectId</param-name>
+                       <param-value>myproject</param-value>
+               </init-param>
+               <init-param>
+                       <param-name>endpoints.serviceName</param-name>
+                       <param-value>myproject.appspot.com</param-value>
+               </init-param>
+       </filter>
+       <filter-mapping>
+               <filter-name>endpoints-api-controller</filter-name>
+               <servlet-name>api</servlet-name>
+       </filter-mapping>

（我已经完成了https://cloud.google.com/appengine/docs/java/endpoints/migrating的部分，我不会在这里讨论）

但我在尝试使用“gradle appengineRun”运行它时遇到了这个错误：

    Oct 24, 2016 8:53:12 AM com.google.appengine.tools.development.SystemPropertiesManager setSystemProperties
    INFO: Overwriting system property key 'java.util.logging.config.file', value '/Users/username/.gradle/appengine-sdk/appengine-java-sdk-1.9.42/config/sdk/logging.properties' with value 'WEB-INF/logging.properties' from '/Users/username/Documents/code/myproject/web/ear/build/exploded-app/default-1.0/WEB-INF/appengine-web.xml'
    Oct 24, 2016 8:53:12 AM com.google.appengine.tools.development.DevAppServerImpl <init>
    INFO: Ignoring application.xml context-root element, for details see https://developers.google.com/appengine/docs/java/modules/#config
    com.google.appengine.tools.development.EnvironmentVariableChecker$IncorrectEnvironmentVariableException: One or more environment variables have been configured in appengine-web.xml that have missing or different values in your local environment. We recommend you use system properties instead, but if you are interacting with legacy code that requires specific environment variables to have specific values, please set these environment variables in your environment before running.
    [Mismatch environmentVariableName=ENDPOINTS_SERVICE_NAME environmentVariableValue=null appEngineWebXmlValue=myproject.appspot.com appEngineWebXmlFile=/Users/username/Documents/code/myproject/web/ear/build/exploded-app/default-1.0/WEB-INF/appengine-web.xml]
            at com.google.appengine.tools.development.EnvironmentVariableChecker.check(EnvironmentVariableChecker.java:75)
            at com.google.appengine.tools.development.ApplicationConfigurationManager.checkEnvironmentVariables(ApplicationConfigurationManager.java:240)
            at com.google.appengine.tools.development.ApplicationConfigurationManager.access$000(ApplicationConfigurationManager.java:32)
            at com.google.appengine.tools.development.ApplicationConfigurationManager$EarModuleConfigurationHandle.checkEnvironmentVariables(ApplicationConfigurationManager.java:486)
            at com.google.appengine.tools.development.JettyContainerService.connectContainer(JettyContainerService.java:213)
            at com.google.appengine.tools.development.AbstractContainerService.createConnection(AbstractContainerService.java:269)
            at com.google.appengine.tools.development.AbstractInstanceHolder.createConnection(AbstractInstanceHolder.java:37)
            at com.google.appengine.tools.development.AbstractModule.createConnection(AbstractModule.java:73)
            at com.google.appengine.tools.development.Modules.createConnections(Modules.java:99)
            at com.google.appengine.tools.development.DevAppServerImpl.doStart(DevAppServerImpl.java:239)
            at com.google.appengine.tools.development.DevAppServerImpl.access$000(DevAppServerImpl.java:45)
            at com.google.appengine.tools.development.DevAppServerImpl$1.run(DevAppServerImpl.java:217)
            at com.google.appengine.tools.development.DevAppServerImpl$1.run(DevAppServerImpl.java:215)
            at java.security.AccessController.doPrivileged(Native Method)
            at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerImpl.java:215)
            at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:277)
            at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:48)
            at com.google.appengine.tools.development.DevAppServerMain.run(DevAppServerMain.java:225)
            at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:216)

我该怎么解决这个问题？

Answer 1

我添加了一个环境变量：

key = ENDPOINTS_SERVICE_NAME 
value = myproject.appspot.com

（此处介绍如何添加环境变量）

以下是解释此标签含义的谷歌文档：

可选。appengine-web.xml文件可以定义应用程序运行时设置的环境变量。

为了避免与本地环境发生冲突，开发服务器不会基于此文件设置环境变量，并要求本地环境已将这些变量设置为匹配值。