mvn appengine:run 无法执行目标 com.google.cloud.tools:appengine-maven-plugin:2.2.0:run mvn appengine:deploy 工作正常答案

【问题标题】：mvn appengine:run fails to execute goal com.google.cloud.tools:appengine-maven-plugin:2.2.0:run mvn appengine:deploy works finemvn appengine:run 无法执行目标 com.google.cloud.tools:appengine-maven-plugin:2.2.0:run mvn appengine:deploy 工作正常
【发布时间】：2020-03-27 23:16:41
【问题描述】：

我按照https://cloud.google.com/appengine/docs/standard/java/building-app/static-content 的说明进行操作，我可以部署我的更改并使用 gcloud app browse 检查它们，但我无法使本地开发环境正常工作。

运行 mvn appengine:run -DskipTests 返回以下错误，并且事先尝试 mvn package clean 不会改变它

[INFO] Scanning for projects...
[WARNING] The project mobi.grocerymonkey.groceryapp:groceryapp:war:1.0-SNAPSHOT uses prerequisites which is only intended for maven-plugin projects but not for non maven-plugin projects. For such purposes you should use the maven-enforcer-plugin. See https://maven.apache.org/enforcer/enforcer-rules/requireMavenVersion.html
[INFO] 
[INFO] --------------< mobi.grocerymonkey.groceryapp:groceryapp >--------------
[INFO] Building groceryapp 1.0-SNAPSHOT
[INFO] --------------------------------[ war ]---------------------------------
[INFO] 
[INFO] --- appengine-maven-plugin:2.2.0:run (default-cli) @ groceryapp ---
Feb 26, 2020 3:28:56 PM com.google.cloud.tools.appengine.operations.DevAppServerRunner run
INFO: submitting command: /usr/local/Cellar/openjdk/13.0.2+8_2/libexec/openjdk.jdk/Contents/Home/bin/java -Xdebug -Dappengine.fullscan.seconds=3 -Duse_jetty9_runtime=true -D--enable_all_permissions=true -Dappengine.sdk.root=/Users/kn/Library/Application Support/google-cloud-tools-java/managed-cloud-sdk/LATEST/google-cloud-sdk/platform/google_appengine/google/appengine/tools/java -cp /Users/kn/Library/Application Support/google-cloud-tools-java/managed-cloud-sdk/LATEST/google-cloud-sdk/platform/google_appengine/google/appengine/tools/java/lib/appengine-tools-api.jar com.google.appengine.tools.development.DevAppServerMain --allow_remote_shutdown --disable_update_check --no_java_agent /Users/kn/Documents/private/musical-funicular/groceryapp/target/groceryapp-1.0-SNAPSHOT
[INFO] GCLOUD: WARNING: An illegal reflective access operation has occurred
[INFO] GCLOUD: WARNING: Illegal reflective access by com.google.appengine.tools.development.StreamHandlerFactory (file:/Users/kn/Library/Application%20Support/google-cloud-tools-java/managed-cloud-sdk/LATEST/google-cloud-sdk/platform/google_appengine/google/appengine/tools/java/lib/impl/appengine-local-runtime.jar) to method java.net.URL.getURLStreamHandler(java.lang.String)
[INFO] GCLOUD: WARNING: Please consider reporting this to the maintainers of com.google.appengine.tools.development.StreamHandlerFactory
[INFO] GCLOUD: WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
[INFO] GCLOUD: WARNING: All illegal access operations will be denied in a future release
[INFO] GCLOUD: java.lang.RuntimeException: Unable to create a DevAppServer
[INFO] GCLOUD:  at com.google.appengine.tools.development.DevAppServerFactory.doCreateDevAppServer(DevAppServerFactory.java:369)
[INFO] GCLOUD:  at com.google.appengine.tools.development.DevAppServerFactory.createDevAppServer(DevAppServerFactory.java:301)
[INFO] GCLOUD:  at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:383)
[INFO] GCLOUD:  at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:45)
[INFO] GCLOUD:  at com.google.appengine.tools.development.DevAppServerMain.run(DevAppServerMain.java:257)
[INFO] GCLOUD:  at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:248)
[INFO] GCLOUD: Caused by: java.lang.ExceptionInInitializerError
[INFO] GCLOUD:  at com.google.appengine.tools.development.DevAppServerImpl.<init>(DevAppServerImpl.java:124)
[INFO] GCLOUD:  at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
[INFO] GCLOUD:  at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
[INFO] GCLOUD:  at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
[INFO] GCLOUD:  at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
[INFO] GCLOUD:  at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
[INFO] GCLOUD:  at com.google.appengine.tools.development.DevAppServerFactory.doCreateDevAppServer(DevAppServerFactory.java:354)
[INFO] GCLOUD:  ... 5 more
[INFO] GCLOUD: Caused by: java.lang.IllegalStateException: java.lang.NoSuchMethodException: java.net.SocksSocketImpl.<init>()
[INFO] GCLOUD:  at com.google.appengine.tools.development.DevSocketImplFactory.<clinit>(DevSocketImplFactory.java:76)
[INFO] GCLOUD:  ... 12 more
[INFO] GCLOUD: Caused by: java.lang.NoSuchMethodException: java.net.SocksSocketImpl.<init>()
[INFO] GCLOUD:  at java.base/java.lang.Class.getConstructor0(Class.java:3350)
[INFO] GCLOUD:  at java.base/java.lang.Class.getDeclaredConstructor(Class.java:2554)
[INFO] GCLOUD:  at com.google.appengine.tools.development.DevSocketImplFactory.<clinit>(DevSocketImplFactory.java:72)
[INFO] GCLOUD:  ... 12 more
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  4.892 s
[INFO] Finished at: 2020-02-26T15:28:57+01:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.google.cloud.tools:appengine-maven-plugin:2.2.0:run (default-cli) on project groceryapp: Failed to run devappserver: com.google.cloud.tools.appengine.operations.cloudsdk.process.ProcessHandlerException: com.google.cloud.tools.appengine.AppEngineException: Non zero exit: 1 -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
Kristians-MacBook-Air:groceryapp kn$

pom.xml

    <?xml version="1.0" encoding="UTF-8"?>
<project>
  <modelVersion>4.0.0</modelVersion>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>

  <groupId>mobi.grocerymonkey.groceryapp</groupId>
  <artifactId>groceryapp</artifactId>

  <properties>
    <!-- uncomment if you wish to set your project here project- gcloud is used otherwise -->
    <!-- <app.deploy.project>enduring-trees-259812</app.deploy.project> -->
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <maven.compiler.showDeprecation>true</maven.compiler.showDeprecation>
    <archiveClasses>true</archiveClasses>
  </properties>

  <prerequisites>
    <maven>3.5</maven>
  </prerequisites>

  <dependencies>
    <!-- Compile/runtime dependencies -->
    <dependency>
      <groupId>com.google.appengine</groupId>
      <artifactId>appengine-api-1.0-sdk</artifactId>
      <version>1.9.78</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>4.0.1</version>
      <type>jar</type>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

    <!-- Test Dependencies -->
    <dependency>
      <groupId>com.google.appengine</groupId>
      <artifactId>appengine-testing</artifactId>
      <version>1.9.78</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>com.google.appengine</groupId>
      <artifactId>appengine-api-stubs</artifactId>
      <version>1.9.78</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>com.google.appengine</groupId>
      <artifactId>appengine-tools-sdk</artifactId>
      <version>1.9.78</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>com.google.truth</groupId>
      <artifactId>truth</artifactId>
      <version>1.0.1</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-engine</artifactId>
      <version>5.6.0</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.mockito</groupId>
      <artifactId>mockito-all</artifactId>
      <version>2.0.2-beta</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>com.googlecode.objectify</groupId>
      <artifactId>objectify</artifactId>
      <version>6.0.6</version>
    </dependency>

        <dependency>
        <groupId>org.json</groupId>
        <artifactId>json</artifactId>
        <version>20190722</version>
        </dependency>
  </dependencies>

  <build>
    <!-- for hot reload of the web application-->
    <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
    <plugins>
      <plugin>
        <groupId>com.google.cloud.tools</groupId>
        <artifactId>appengine-maven-plugin</artifactId>
        <version>2.2.0</version>
        <configuration>
          <project>enduring-trees-259812</project>
          <version>1</version>
            <jvmFlags>
              <jvmFlag>-Xdebug</jvmFlag>
              <jvmFlag>-Dappengine.fullscan.seconds=3</jvmFlag>
            </jvmFlags>
        </configuration>
      </plugin>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>versions-maven-plugin</artifactId>
        <version>2.7</version>
        <executions>
          <execution>
            <phase>compile</phase>
            <goals>
              <goal>display-dependency-updates</goal>
              <goal>display-plugin-updates</goal>
            </goals>
          </execution>
        </executions>
        <configuration>
          <excludes>
            <exclude>javax.servlet:javax.servlet-api</exclude>
            <exclude>com.google.guava:guava</exclude> <!-- avoid android version -->
          </excludes>
        </configuration>
      </plugin>

      <plugin>
        <artifactId>maven-war-plugin</artifactId>
        <version>3.2.3</version>
      </plugin>

      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.8.1</version>
      </plugin>

      <plugin>
        <artifactId>maven-clean-plugin</artifactId>
        <version>3.1.0</version>
      </plugin>

      <plugin>
        <artifactId>maven-install-plugin</artifactId>
        <version>3.0.0-M1</version>
      </plugin>

      <plugin>
        <artifactId>maven-surefire-plugin</artifactId>
        <version>3.0.0-M4</version>
      </plugin>

      <plugin>
        <artifactId>maven-site-plugin</artifactId>
        <version>3.8.2</version>
      </plugin>

      <plugin>
        <artifactId>maven-resources-plugin</artifactId>
        <version>3.1.0</version>
      </plugin>

      <plugin>
        <artifactId>maven-deploy-plugin</artifactId>
        <version>3.1</version>
      </plugin>

      <plugin>
        <artifactId>maven-enforcer-plugin</artifactId>
        <version>3.0.0-M3</version>
        <executions>
          <execution>
            <id>enforce-maven</id>
            <goals>
              <goal>enforce</goal>
            </goals>
            <configuration>
              <rules>
                <requireMavenVersion>
                  <version>3.5</version>
                </requireMavenVersion>
                <requirePluginVersions>
                   <message>Best Practice is to always define plugin versions!</message>
                   <banLatest>true</banLatest>
                   <banRelease>true</banRelease>
                   <phases>clean,deploy,verify,appengine:run,appengine:deploy,appengine:update,appengine:devappaserver,site</phases>
                </requirePluginVersions>
              </rules>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
</project>

appengine-web.xml

<?xml version="1.0" encoding="utf-8"?>
<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
    <runtime>java8</runtime>
    <threadsafe>true</threadsafe>
    <system-properties>
        <property name="java.util.logging.config.file" value="WEB-INF/logging.properties"/>
    </system-properties>
    <static-files>
      <include path="/**.html"></include>
    </static-files>
</appengine-web-app>

mvn clean install -U 已运行

【问题讨论】：

您能否附上您的pom.xml 和appengine-web.xml 文件，以便我查看问题是由于依赖关系还是配置文件有问题。但与此同时，您可以尝试运行以下命令：mvn clean install -U 此命令会重新下载所有依赖项，以防出现故障或之前未正确下载。希望这会有所帮助。
@sneacsu 现在添加了两个文件
appengine-web.xml 丢失，您是否尝试运行mvn clean install -U 命令？
mvn clean install -U 现在已经运行，一切顺利。文件已添加
在完成mvn clean install -U 之后，您是否尝试过mvn appengine:run。我看不出你的配置文件有什么问题。

标签： java maven gcloud

【解决方案1】：

由于使用了不匹配的 JDK 版本，我遇到了同样的构建错误。使用“java -version”检查您的 JDK 版本。可能你应该使用 Java8(Java1.8) 而不是 Open JDK13。

【讨论】：

嗨，谢谢。 java -version openjdk version "1.8.0_232" OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_232-b09) OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.232-b09, mixed mode) 感谢您的评论:)