最近弄hadoop 程式碼 編譯安裝時，出現如下錯誤

[ERROR] Failed to execute goal org.apache.hadoop:hadoop-maven-plugins:2.6.4:protoc (compile-protoc) on project hadoop-common: org.apache.maven.plugin.MojoExecutionException: 'protoc --version' did not return a version -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to
 
 execute goal org.apache.hadoop:hadoop-maven-plugins:2.6.4:protoc (compile-protoc) on project hadoop-common: org.apache.maven.plugin.MojoExecutionException: 'protoc --version' did not return a version
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:216)
        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:862)
        at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:286)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:197)
        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:497)
        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: org.apache.maven.plugin.MojoExecutionException: 'protoc --version' did not return a version
        at org.apache.hadoop.maven.plugin.protoc.ProtocMojo.execute(ProtocMojo.java:105)

原因：
沒有安裝protoc

window 環境安裝

步驟1： 軟體準備

1. protobuf-2.5.0.tar.gz
2. protoc-2.5.0-win32.zip

步驟2： 安裝

1. 解壓protobuf-2.5.0.tar.gz 和 protoc-2.5.0-win32.zip
2. 將protoc-2.5.0-win32中的protoc.exe拷貝到c:\windows\system32中
3. 將protoc.exe檔案拷貝到解壓後的XXX\protobuf-2.5.0\src目錄中
4. 進入XXX\protobuf-2.5.0\Java 目錄
   執行【mvn package】命令編輯該包 生成protobuf-java-2.5.0.jar檔案（位於target目錄中）
5. 配置protoc.exe的path路徑，並重啟計算機