我正在尝试浏览本指南
https://developer.amazon.com/public/solutions/alexa/alexa-voice-service/docs/java-client-sample
我在＆＃34;运行客户＆＃34;步骤，特别是步骤4到8。 我运行mvn validate 建立成功，
我运行mvn install 建立成功，
我运行mvn exec：exec 构建失败并出现以下错误
> C:\Users\tbh38\Desktop\Coding Files\AVSFiles\samples\javaclient>mvn exec:exec -e
[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Alexa Voice Service Sample Java Client 20160207.0
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- exec-maven-plugin:1.2.1:exec (default-cli) @ sample-java-client ---
ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console.
Exception in thread "main" javax.json.stream.JsonParsingException: Unexpected char 85 at (line no=7, column no=27, offset=167)
at org.glassfish.json.JsonTokenizer.unexpectedChar(JsonTokenizer.java:532)
at org.glassfish.json.JsonTokenizer.unescape(JsonTokenizer.java:231)
at org.glassfish.json.JsonTokenizer.readString(JsonTokenizer.java:184)
at org.glassfish.json.JsonTokenizer.nextToken(JsonTokenizer.java:376)
at org.glassfish.json.JsonParserImpl$ObjectContext.getNextEvent(JsonParserImpl.java:261)
at org.glassfish.json.JsonParserImpl$StateIterator.next(JsonParserImpl.java:172)
at org.glassfish.json.JsonParserImpl.next(JsonParserImpl.java:149)
at org.glassfish.json.JsonReaderImpl.readObject(JsonReaderImpl.java:177)
at org.glassfish.json.JsonReaderImpl.readObject(JsonReaderImpl.java:184)
at org.glassfish.json.JsonReaderImpl.readObject(JsonReaderImpl.java:103)
at com.amazon.alexa.avs.config.DeviceConfigUtils.readConfigFile(DeviceConfigUtils.java:60)
at com.amazon.alexa.avs.config.DeviceConfigUtils.readConfigFile(DeviceConfigUtils.java:46)
at com.amazon.alexa.avs.AVSApp.<init>(AVSApp.java:79)
at com.amazon.alexa.avs.AVSApp.main(AVSApp.java:74)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.279 s
[INFO] Finished at: 2016-07-14T09:50:07-04:00
[INFO] Final Memory: 11M/304M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:exec (default-cli) on project sample-java-client: Command execution failed. Process exited with an error: 1 (Exit value: 1) -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:exec (default-cli) on project sample-java-client: Command execution failed.
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.MojoExecutionException: Command execution failed.
at org.codehaus.mojo.exec.ExecMojo.execute(ExecMojo.java:362)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
... 20 more
Caused by: org.apache.commons.exec.ExecuteException: Process exited with an error: 1 (Exit value: 1)
at org.apache.commons.exec.DefaultExecutor.executeInternal(DefaultExecutor.java:377)
at org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:160)
at org.codehaus.mojo.exec.ExecMojo.executeCommandLine(ExecMojo.java:610)
at org.codehaus.mojo.exec.ExecMojo.execute(ExecMojo.java:352)... 22 more
[ERROR]
[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
>
> Blockquote
我的pom.xml文件看起来像
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.amazon.alexa.avs</groupId>
<artifactId>sample-java-client</artifactId>
<version>20160207.0</version>
<packaging>jar</packaging>
<name>Alexa Voice Service Sample Java Client</name>
<url>https://developer.amazon.com/appsandservices/solutions/alexa/alexa-voice-service</url>
<properties>
<jetty.version>9.3.7.v20160115</jetty.version>
<!-- The latest version of alpn-boot that supports JDK 1.8.0_71 through 1.8.0_74 -->
<!-- To override, pass -Dalpn-boot.version=YOUR_VERSION when running "mvn install" and "mvn exec:exec" -->
<!-- Your version can be determined here: http://www.eclipse.org/jetty/documentation/current/alpn-chapter.html#alpn-versions -->
<alpn-boot.version>8.1.8.v20160420</alpn-boot.version>
<slf4j.version>1.7.10</slf4j.version>
<log4j.version>2.3</log4j.version>
</properties>
<dependencies>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.9</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>uk.co.caprica</groupId>
<artifactId>vlcj</artifactId>
<version>2.4.1</version>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.json</artifactId>
<version>1.0.4</version>
</dependency>
<dependency>
<groupId>javazoom</groupId>
<artifactId>jlayer</artifactId>
<version>1.0.1</version>
</dependency>
<dependency>
<groupId>org.mortbay.jetty.alpn</groupId>
<artifactId>alpn-boot</artifactId>
<version>${alpn-boot.version}</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.13</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-slf4j-impl</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>${log4j.version}</version>
</dependency>
<!-- Jetty 9.3.7-SNAPSHOT -->
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-alpn-client</artifactId>
<version>${jetty.version}</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-http</artifactId>
<version>${jetty.version}</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty.http2</groupId>
<artifactId>http2-client</artifactId>
<version>${jetty.version}</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty.http2</groupId>
<artifactId>http2-http-client-transport</artifactId>
<version>${jetty.version}</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty.http2</groupId>
<artifactId>http2-hpack</artifactId>
<version>${jetty.version}</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty.http2</groupId>
<artifactId>http2-common</artifactId>
<version>${jetty.version}</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-server</artifactId>
<version>${jetty.version}</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-security</artifactId>
<version>${jetty.version}</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-servlet</artifactId>
<version>${jetty.version}</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-util</artifactId>
<version>${jetty.version}</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-io</artifactId>
<version>${jetty.version}</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-client</artifactId>
<version>${jetty.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
<includes>
<include>**/*.properties</include>
</includes>
</resource>
<!-- Don't filter the mp3 files or they'll get corrupted -->
<resource>
<directory>src/main/resources</directory>
<filtering>false</filtering>
<includes>
<include>**/*.mp3</include>
</includes>
</resource>
</resources>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<configuration>
<executable>java</executable>
<arguments>
<argument>-Xbootclasspath/p:${settings.localRepository}/org/mortbay/jetty/alpn/alpn-boot/${alpn-boot.version}/alpn-boot-${alpn-boot.version}.jar</argument>
<argument>-Dlog4j.configurationFile=file:///${basedir}/log4j2.xml</argument>
<argument>-classpath</argument>
<classpath/>
<argument>-Djna.library.path=${env.VLC_PATH}</argument>
<argument>com.amazon.alexa.avs.AVSApp</argument>
</arguments>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
到目前为止，我已经尝试过1.8u71和1.8u74的不同版本的JDK，我尝试过使用命令＆＃39; -Dalpn-boot.version = YOUR_VERSION＆＃39;在mvn安装之后和mvn exec：exec之后。我还从头开始重新启动了这个示例项目，结果出现了同样的错误。
可悲的是，我对所有这些仍然相当新，并且已经对如何处理错误采取了立场。任何帮助表示赞赏。