编译Sqoop2错误解决，编译sqoop2错误


Sqoop2的代码结构相对于Sqoop做了大幅度调整，其中编译方式也从ant+maven杂糅的方式变为依赖maven3，今天将源代码下下来，放到linux测试机器/export/build下后，运行“ mvn package -Pbinary -Dhadoop.profile=200 ”命令，居然出现以下错误：

Downloaded: http://repo2.maven.org/maven2/org/sonatype/aether/aether-util/1.7/aether-util-1.7.jar (106 KB at 78.1 KB/sec)
[WARNING] Error injecting: org.apache.maven.plugins.site.DefaultMavenReportExecutor
java.lang.NoClassDefFoundError: org/sonatype/aether/graph/DependencyFilter
	at java.lang.Class.getDeclaredConstructors0(Native Method)
	at java.lang.Class.privateGetDeclaredConstructors(Class.java:2493)
	at java.lang.Class.getDeclaredConstructors(Class.java:1901)
	at com.google.inject.spi.InjectionPoint.forConstructorOf(InjectionPoint.java:245)
	at com.google.inject.internal.ConstructorBindingImpl.create(ConstructorBindingImpl.java:99)
	at com.google.inject.internal.InjectorImpl.createUninitializedBinding(InjectorImpl.java:653)
	at com.google.inject.internal.InjectorImpl.createJustInTimeBinding(InjectorImpl.java:863)
	at com.google.inject.internal.InjectorImpl.createJustInTimeBindingRecursive(InjectorImpl.java:790)
	at com.google.inject.internal.InjectorImpl.getJustInTimeBinding(InjectorImpl.java:278)
	at com.google.inject.internal.InjectorImpl.getBindingOrThrow(InjectorImpl.java:210)
	at com.google.inject.internal.InjectorImpl.getProviderOrThrow(InjectorImpl.java:986)
	at com.google.inject.internal.InjectorImpl.getProvider(InjectorImpl.java:1019)
	at com.google.inject.internal.InjectorImpl.getProvider(InjectorImpl.java:982)
	at com.google.inject.internal.InjectorImpl.getInstance(InjectorImpl.java:1032)
	at org.eclipse.sisu.space.AbstractDeferredClass.get(AbstractDeferredClass.java:48)
	at com.google.inject.internal.ProviderInternalFactory.provision(ProviderInternalFactory.java:86)
	at com.google.inject.internal.InternalFactoryToInitializableAdapter.provision(InternalFactoryToInitializableAdapter.java:55)
	at com.google.inject.internal.ProviderInternalFactory$1.call(ProviderInternalFactory.java:70)
	at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:100)
	at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:116)
	at com.google.inject.internal.ProvisionListenerStackCallback.provision(ProvisionListenerStackCallback.java:55)
	at com.google.inject.internal.ProviderInternalFactory.circularGet(ProviderInternalFactory.java:68)
	at com.google.inject.internal.InternalFactoryToInitializableAdapter.get(InternalFactoryToInitializableAdapter.java:47)
	at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
	at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1054)
	at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
	at com.google.inject.Scopes$1$1.get(Scopes.java:59)
	at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
	at com.google.inject.internal.InjectorImpl$2$1.call(InjectorImpl.java:997)
	at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1054)
	at com.google.inject.internal.InjectorImpl$2.get(InjectorImpl.java:993)
	at org.eclipse.sisu.inject.LazyBeanEntry.getValue(LazyBeanEntry.java:82)
	at org.eclipse.sisu.plexus.LazyPlexusBean.getValue(LazyPlexusBean.java:51)
	at org.eclipse.sisu.plexus.PlexusRequirements$RequirementProvider.get(PlexusRequirements.java:250)
	at org.eclipse.sisu.plexus.ProvidedPropertyBinding.injectProperty(ProvidedPropertyBinding.java:48)
	at org.eclipse.sisu.bean.BeanInjector.injectMembers(BeanInjector.java:52)
	at com.google.inject.internal.MembersInjectorImpl.injectMembers(MembersInjectorImpl.java:128)
	at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:118)
	at com.google.inject.internal.ConstructorInjector.access$000(ConstructorInjector.java:32)
	at com.google.inject.internal.ConstructorInjector$1.call(ConstructorInjector.java:92)
	at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:100)
	at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:116)
	at com.google.inject.internal.ProvisionListenerStackCallback.provision(ProvisionListenerStackCallback.java:55)
	at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:90)
	at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:269)
	at com.google.inject.internal.InjectorImpl$2$1.call(InjectorImpl.java:997)
	at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1054)
	at com.google.inject.internal.InjectorImpl$2.get(InjectorImpl.java:993)
	at com.google.inject.internal.InjectorImpl.getInstance(InjectorImpl.java:1032)
	at org.eclipse.sisu.space.AbstractDeferredClass.get(AbstractDeferredClass.java:48)
	at com.google.inject.internal.ProviderInternalFactory.provision(ProviderInternalFactory.java:86)
	at com.google.inject.internal.InternalFactoryToInitializableAdapter.provision(InternalFactoryToInitializableAdapter.java:55)
	at com.google.inject.internal.ProviderInternalFactory$1.call(ProviderInternalFactory.java:70)
	at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:100)
	at org.eclipse.sisu.plexus.PlexusLifecycleManager.onProvision(PlexusLifecycleManager.java:133)
	at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:109)
	at com.google.inject.internal.ProvisionListenerStackCallback.provision(ProvisionListenerStackCallback.java:55)
	at com.google.inject.internal.ProviderInternalFactory.circularGet(ProviderInternalFactory.java:68)
	at com.google.inject.internal.InternalFactoryToInitializableAdapter.get(InternalFactoryToInitializableAdapter.java:47)
	at com.google.inject.internal.InjectorImpl$2$1.call(InjectorImpl.java:997)
	at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1047)
	at com.google.inject.internal.InjectorImpl$2.get(InjectorImpl.java:993)
	at com.google.inject.Scopes$1$1.get(Scopes.java:59)
	at org.eclipse.sisu.inject.LazyBeanEntry.getValue(LazyBeanEntry.java:82)
	at org.eclipse.sisu.plexus.LazyPlexusBean.getValue(LazyPlexusBean.java:51)
	at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:260)
	at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:252)
	at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getConfiguredMojo(DefaultMavenPluginManager.java:459)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:97)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
	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:84)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:317)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:152)
	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:555)
	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:158)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	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: java.lang.ClassNotFoundException: org.sonatype.aether.graph.DependencyFilter
	at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:259)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:235)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:227)
	... 89 more
[WARNING] Error injecting: org.apache.maven.plugins.site.SiteMojo
java.lang.NoClassDefFoundError: org/sonatype/aether/graph/DependencyFilter
	at java.lang.Class.getDeclaredConstructors0(Native Method)
	at java.lang.Class.privateGetDeclaredConstructors(Class.java:2493)
	at java.lang.Class.getDeclaredConstructors(Class.java:1901)
	at com.google.inject.spi.InjectionPoint.forConstructorOf(InjectionPoint.java:245)
	at com.google.inject.internal.ConstructorBindingImpl.create(ConstructorBindingImpl.java:99)
	at com.google.inject.internal.InjectorImpl.createUninitializedBinding(InjectorImpl.java:653)
	at com.google.inject.internal.InjectorImpl.createJustInTimeBinding(InjectorImpl.java:863)
	at com.google.inject.internal.InjectorImpl.createJustInTimeBindingRecursive(InjectorImpl.java:790)
	at com.google.inject.internal.InjectorImpl.getJustInTimeBinding(InjectorImpl.java:278)
	at com.google.inject.internal.InjectorImpl.getBindingOrThrow(InjectorImpl.java:210)
	at com.google.inject.internal.InjectorImpl.getProviderOrThrow(InjectorImpl.java:986)
	at com.google.inject.internal.InjectorImpl.getProvider(InjectorImpl.java:1019)
	at com.google.inject.internal.InjectorImpl.getProvider(InjectorImpl.java:982)
	at com.google.inject.internal.InjectorImpl.getInstance(InjectorImpl.java:1032)
	at org.eclipse.sisu.space.AbstractDeferredClass.get(AbstractDeferredClass.java:48)
	at com.google.inject.internal.ProviderInternalFactory.provision(ProviderInternalFactory.java:86)
	at com.google.inject.internal.InternalFactoryToInitializableAdapter.provision(InternalFactoryToInitializableAdapter.java:55)
	at com.google.inject.internal.ProviderInternalFactory$1.call(ProviderInternalFactory.java:70)
	at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:100)
	at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:116)
	at com.google.inject.internal.ProvisionListenerStackCallback.provision(ProvisionListenerStackCallback.java:55)
	at com.google.inject.internal.ProviderInternalFactory.circularGet(ProviderInternalFactory.java:68)
	at com.google.inject.internal.InternalFactoryToInitializableAdapter.get(InternalFactoryToInitializableAdapter.java:47)
	at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
	at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1054)
	at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
	at com.google.inject.Scopes$1$1.get(Scopes.java:59)
	at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
	at com.google.inject.internal.InjectorImpl$2$1.call(InjectorImpl.java:997)
	at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1054)
	at com.google.inject.internal.InjectorImpl$2.get(InjectorImpl.java:993)
	at org.eclipse.sisu.inject.LazyBeanEntry.getValue(LazyBeanEntry.java:82)
	at org.eclipse.sisu.plexus.LazyPlexusBean.getValue(LazyPlexusBean.java:51)
	at org.eclipse.sisu.plexus.PlexusRequirements$RequirementProvider.get(PlexusRequirements.java:250)
	at org.eclipse.sisu.plexus.ProvidedPropertyBinding.injectProperty(ProvidedPropertyBinding.java:48)
	at org.eclipse.sisu.bean.BeanInjector.injectMembers(BeanInjector.java:52)
	at com.google.inject.internal.MembersInjectorImpl.injectMembers(MembersInjectorImpl.java:128)
	at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:118)
	at com.google.inject.internal.ConstructorInjector.access$000(ConstructorInjector.java:32)
	at com.google.inject.internal.ConstructorInjector$1.call(ConstructorInjector.java:92)
	at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:100)
	at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:116)
	at com.google.inject.internal.ProvisionListenerStackCallback.provision(ProvisionListenerStackCallback.java:55)
	at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:90)
	at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:269)
	at com.google.inject.internal.InjectorImpl$2$1.call(InjectorImpl.java:997)
	at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1054)
	at com.google.inject.internal.InjectorImpl$2.get(InjectorImpl.java:993)
	at com.google.inject.internal.InjectorImpl.getInstance(InjectorImpl.java:1032)
	at org.eclipse.sisu.space.AbstractDeferredClass.get(AbstractDeferredClass.java:48)
	at com.google.inject.internal.ProviderInternalFactory.provision(ProviderInternalFactory.java:86)
	at com.google.inject.internal.InternalFactoryToInitializableAdapter.provision(InternalFactoryToInitializableAdapter.java:55)
	at com.google.inject.internal.ProviderInternalFactory$1.call(ProviderInternalFactory.java:70)
	at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:100)
	at org.eclipse.sisu.plexus.PlexusLifecycleManager.onProvision(PlexusLifecycleManager.java:133)
	at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:109)
	at com.google.inject.internal.ProvisionListenerStackCallback.provision(ProvisionListenerStackCallback.java:55)
	at com.google.inject.internal.ProviderInternalFactory.circularGet(ProviderInternalFactory.java:68)
	at com.google.inject.internal.InternalFactoryToInitializableAdapter.get(InternalFactoryToInitializableAdapter.java:47)
	at com.google.inject.internal.InjectorImpl$2$1.call(InjectorImpl.java:997)
	at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1047)
	at com.google.inject.internal.InjectorImpl$2.get(InjectorImpl.java:993)
	at com.google.inject.Scopes$1$1.get(Scopes.java:59)
	at org.eclipse.sisu.inject.LazyBeanEntry.getValue(LazyBeanEntry.java:82)
	at org.eclipse.sisu.plexus.LazyPlexusBean.getValue(LazyPlexusBean.java:51)
	at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:260)
	at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:252)
	at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getConfiguredMojo(DefaultMavenPluginManager.java:459)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:97)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
	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:84)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:317)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:152)
	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:555)
	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:158)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	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: java.lang.ClassNotFoundException: org.sonatype.aether.graph.DependencyFilter
	at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:259)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:235)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:227)
	... 89 more
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] Sqoop ............................................. SUCCESS [0.954s]
[INFO] Sqoop Common ...................................... SUCCESS [34.939s]
[INFO] Sqoop SPI ......................................... SUCCESS [0.307s]
[INFO] Sqoop Core ........................................ SUCCESS [3.602s]
[INFO] Sqoop Repository .................................. SUCCESS [0.060s]
[INFO] Sqoop Derby Repository ............................ SUCCESS [1:16.035s]
[INFO] Sqoop Execution Engines ........................... SUCCESS [0.038s]
[INFO] Sqoop Mapreduce Execution Engine .................. SUCCESS [48.675s]
[INFO] Sqoop Submission Engines .......................... SUCCESS [0.034s]
[INFO] Sqoop Mapreduce Submission Engine ................. SUCCESS [0.466s]
[INFO] Sqoop Connectors .................................. SUCCESS [0.029s]
[INFO] Sqoop Connector SDK ............................... SUCCESS [0.149s]
[INFO] Sqoop Generic JDBC Connector ...................... SUCCESS [28.447s]
[INFO] Sqoop Server ...................................... SUCCESS [1.531s]
[INFO] Sqoop Client ...................................... SUCCESS [0.933s]
[INFO] Sqoop Shell ....................................... SUCCESS [0.880s]
[INFO] Sqoop Documentation ............................... FAILURE [38.448s]
[INFO] Sqoop Distribution ................................ SKIPPED
[INFO] Sqoop Integration Tests ........................... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3:56.302s
[INFO] Finished at: Mon Oct 13 11:25:45 CST 2014
[INFO] Final Memory: 35M/275M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-site-plugin:3.0-beta-3:site (packaging-documentation) on project sqoop-docs: Execution packaging-documentation of goal org.apache.maven.plugins:maven-site-plugin:3.0-beta-

3:site failed: A required class was missing while executing org.apache.maven.plugins:maven-site-plugin:3.0-beta-3:site: org/sonatype/aether/graph/DependencyFilter

通过网上搜索发现，原来需要修改docs/模块下的pom.xml，将其中依赖的maven-site-plugin插件版本进行替换， 本身的版本已经过时了，替换为3.3的版本即可。 

<plugin>
        <artifactId>maven-site-plugin</artifactId>
        <version>3.3</version>
</plugin>

如果使用mvn clean install 编译时，还可可能碰到以下错误：

1、Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project sqoop-shell: Compilation failure
解决方式是加上额外参数： -Drat.numUnapprovedLicenses=100


2、[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 40.778s
[INFO] Finished at: Mon Oct 13 15:11:20 CST 2014
[INFO] Final Memory: 28M/599M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project sqoop-shell: Compilation failure
[ERROR] Failure executing javac, but could not parse the error:
[ERROR] 
[ERROR] 
[ERROR] The system is out of resources.
[ERROR] Consult the following stack trace for details.
[ERROR] java.lang.OutOfMemoryError: PermGen space
[ERROR] at java.lang.ClassLoader.defineClass1(Native Method)
[ERROR] at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
[ERROR] at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
[ERROR] at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
[ERROR] at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
[ERROR] at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
[ERROR] at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
[ERROR] at java.security.AccessController.doPrivileged(Native Method)
[ERROR] at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
[ERROR] at org.codehaus.plexus.compiler.javac.IsolatedClassLoader.loadClass(IsolatedClassLoader.java:56)
[ERROR] at com.sun.tools.javac.main.JavaCompiler.<init>(JavaCompiler.java:333)
[ERROR] at com.sun.tools.javac.main.JavaCompiler.instance(JavaCompiler.java:88)
[ERROR] at com.sun.tools.javac.main.Main.compile(Main.java:424)
[ERROR] at com.sun.tools.javac.main.Main.compile(Main.java:353)
[ERROR] at com.sun.tools.javac.main.Main.compile(Main.java:342)
[ERROR] at com.sun.tools.javac.main.Main.compile(Main.java:333)
[ERROR] at com.sun.tools.javac.Main.compile(Main.java:94)
[ERROR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ERROR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
[ERROR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[ERROR] at java.lang.reflect.Method.invoke(Method.java:606)

解决方法是修改总控pom.xml中jdk编译版本与本机安装jdk版本保持一致：

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compile.source>1.7</maven.compile.source>
    <maven.compile.target>1.7</maven.compile.target>
    <commons-dbcp.version>1.4</commons-dbcp.version>
    <commons-lang.version>2.5</commons-lang.version>




编译错误怎解决

要学会看编译语句Main.cc: In function 'int main()':Main.cc:47: error: redefinition of 'int main()' ====》重复定义main函数，表示文件里出现了两个main函数。Main.cc:13: error: 'int main()' previously defined here ==》这里是第一个main函数所在的行
 

VS编译错误，怎解决

在查找预编译头时遇到意外的文件结尾。是否忘记了向源中添加“#include "stdafx.h"”? 编译器已经估计错误所在，你根据提示查找错误，在源文件中看看有没有#include "stdafx.h"这句话
 

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