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Eclipse Maven 插件配置问题

发布于 2024-09-11 02:41:56 字数 6905 浏览 10 评论 0原文

我已经关注了 这个线程

现在，当我尝试使用已安装的 Maven 插件进行构建时，出现以下错误。 我执行的目标是从首选项安装的 JRE 中的 clean -X install

Unable to locate the Javac Compiler in:
  C:\Program Files\Java\jre6\..\lib\tools.jar
Please ensure you are using JDK 1.4 or above and
not a JRE (the com.sun.tools.javac.Main class is required).
In most cases you can change the location of your Java
installation by setting the JAVA_HOME environment variable.
-> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.0.2:compile (default-compile) on project trojantime: Compilation failure
Unable to locate the Javac Compiler in:
  C:\Program Files\Java\jre6\..\lib\tools.jar
Please ensure you are using JDK 1.4 or above and
not a JRE (the com.sun.tools.javac.Main class is required).
In most cases you can change the location of your Java
installation by setting the JAVA_HOME environment variable.

    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:581)
    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:324)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:247)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:104)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:427)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:157)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:121)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.CompilationFailureException: Compilation failure
Unable to locate the Javac Compiler in:
  C:\Program Files\Java\jre6\..\lib\tools.jar
Please ensure you are using JDK 1.4 or above and
not a JRE (the com.sun.tools.javac.Main class is required).
In most cases you can change the location of your Java
installation by setting the JAVA_HOME environment variable.

    at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:516)
    at org.apache.maven.plugin.CompilerMojo.execute(CompilerMojo.java:114)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:105)
    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:577)
    ... 14 more
[ERROR] 
[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/MojoFailureException

它是 JRE 设置，

这里是关于>安装>配置>的快照

*** Platform Details:

*** System properties:
awt.toolkit=sun.awt.windows.WToolkit
com.sun.management.jmxremote=
eclipse.application=org.eclipse.ui.ide.workbench
eclipse.commands=-os
win32
-ws
win32
-arch
x86
-showsplash
D:\eclipse VT preconfigured\eclipse\\plugins\org.eclipse.platform_3.3.202.v201002111343\splash.bmp
-launcher
D:\eclipse VT preconfigured\eclipse\eclipse.exe
-name
Eclipse
--launcher.library
D:\eclipse VT preconfigured\eclipse\plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.0.200.v20090519\eclipse_1206.dll
-startup
D:\eclipse VT preconfigured\eclipse\plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
-showlocation
-product
org.eclipse.epp.package.jee.product
-vm
c:\Program Files\Java\jdk1.6.0_04\jre\bin\client\jvm.dll
eclipse.home.location=file:/D:/eclipse VT preconfigured/eclipse/
eclipse.launcher=D:\eclipse VT preconfigured\eclipse\eclipse.exe
[email protected]/../p2/
eclipse.p2.profile=epp.package.jee
eclipse.product=org.eclipse.epp.package.jee.product
eclipse.startTime=1279882656890
eclipse.vm=c:\Program Files\Java\jdk1.6.0_04\jre\bin\client\jvm.dll
eclipse.vmargs=-Dosgi.requiredJavaVersion=1.5
-Xms40m
-Xmx740m
-Xss4m
-XX:PermSize=128m
-XX:MaxPermSize=128m
-XX:CompileThreshold=5
-XX:MaxGCPauseMillis=10
-XX:MaxHeapFreeRatio=70
-XX:+UseConcMarkSweepGC
-XX:+CMSIncrementalMode
-XX:+CMSIncrementalPacing
-Dcom.sun.management.jmxremote
-Djava.class.path=D:\eclipse VT preconfigured\eclipse\plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
file.encoding=Cp1252
file.encoding.pkg=sun.io
file.separator=\
java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment
java.awt.printerjob=sun.awt.windows.WPrinterJob
java.class.path=D:\eclipse VT preconfigured\eclipse\plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
java.class.version=50.0
java.endorsed.dirs=c:\Program Files\Java\jdk1.6.0_04\jre\lib\endorsed
java.ext.dirs=c:\Program Files\Java\jdk1.6.0_04\jre\lib\ext;C:\WINDOWS\Sun\Java\lib\ext
java.home=c:\Program Files\Java\jdk1.6.0_04\jre
java.io.tmpdir=C:\DOCUME~1\argus\LOCALS~1\Temp\
java.library.path=D:\eclipse VT preconfigured\eclipse;.;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;c:/Program Files/Java/jdk1.6.0_04/jre/bin/client;c:/Program Files/Java/jdk1.6.0_04/jre/bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\TortoiseSVN\bin;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\Java\jdk1.6.0_04\bin;C:\Program Files\MySQL\MySQL Server 5.1\bin;C:\Documents and Settings\argus\My Documents\apache-ant-1.7.1-bin\apache-ant-1.7.1\bin;C:\Documents and Settings\argus\My Documents\apache-maven-2.0.10\bin;C:\Documents and Settings\argus\My Documents\groovy-binary-1.7.3\groovy-1.7.3\bin;C:\Documents and Settings\argus\My Documents\patch-2.5.9-7-bin\bin
java.rmi.server.randomIDs=true
java.runtime.name=Java(TM) SE Runtime Environment
java.runtime.version=1.6.0_04-b12
java.specification.name=Java Platform API Specification
java.specification.vendor=Sun Microsystems Inc.
java.specification.version=1.6
java.vendor=Sun Microsystems Inc.
java.vendor.url=http://java.sun.com/
java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi
java.version=1.6.0_04
java.vm.info=mixed mode
java.vm.name=Java HotSpot(TM) Client VM
java.vm.specification.name=Java Virtual Machine Specification
java.vm.specification.vendor=Sun Microsystems Inc.
java.vm.specification.version=1.0
java.vm.vendor=Sun Microsystems Inc.
java.vm.version=10.0-b19
line.separator=
.
.
.
原文

I have followed this thread

now when i try to build using maven plugin installed i am getting following error.
goal i executed was clean -X install

Unable to locate the Javac Compiler in:
  C:\Program Files\Java\jre6\..\lib\tools.jar
Please ensure you are using JDK 1.4 or above and
not a JRE (the com.sun.tools.javac.Main class is required).
In most cases you can change the location of your Java
installation by setting the JAVA_HOME environment variable.
-> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.0.2:compile (default-compile) on project trojantime: Compilation failure
Unable to locate the Javac Compiler in:
  C:\Program Files\Java\jre6\..\lib\tools.jar
Please ensure you are using JDK 1.4 or above and
not a JRE (the com.sun.tools.javac.Main class is required).
In most cases you can change the location of your Java
installation by setting the JAVA_HOME environment variable.

    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:581)
    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:324)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:247)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:104)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:427)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:157)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:121)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.CompilationFailureException: Compilation failure
Unable to locate the Javac Compiler in:
  C:\Program Files\Java\jre6\..\lib\tools.jar
Please ensure you are using JDK 1.4 or above and
not a JRE (the com.sun.tools.javac.Main class is required).
In most cases you can change the location of your Java
installation by setting the JAVA_HOME environment variable.

    at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:516)
    at org.apache.maven.plugin.CompilerMojo.execute(CompilerMojo.java:114)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:105)
    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:577)
    ... 14 more
[ERROR] 
[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/MojoFailureException

in Installed JRE from preferences it is JRE set and

here is the snapshot of about>installation>configuration>

*** Platform Details:

*** System properties:
awt.toolkit=sun.awt.windows.WToolkit
com.sun.management.jmxremote=
eclipse.application=org.eclipse.ui.ide.workbench
eclipse.commands=-os
win32
-ws
win32
-arch
x86
-showsplash
D:\eclipse VT preconfigured\eclipse\\plugins\org.eclipse.platform_3.3.202.v201002111343\splash.bmp
-launcher
D:\eclipse VT preconfigured\eclipse\eclipse.exe
-name
Eclipse
--launcher.library
D:\eclipse VT preconfigured\eclipse\plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.0.200.v20090519\eclipse_1206.dll
-startup
D:\eclipse VT preconfigured\eclipse\plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
-showlocation
-product
org.eclipse.epp.package.jee.product
-vm
c:\Program Files\Java\jdk1.6.0_04\jre\bin\client\jvm.dll
eclipse.home.location=file:/D:/eclipse VT preconfigured/eclipse/
eclipse.launcher=D:\eclipse VT preconfigured\eclipse\eclipse.exe
[email protected]/../p2/
eclipse.p2.profile=epp.package.jee
eclipse.product=org.eclipse.epp.package.jee.product
eclipse.startTime=1279882656890
eclipse.vm=c:\Program Files\Java\jdk1.6.0_04\jre\bin\client\jvm.dll
eclipse.vmargs=-Dosgi.requiredJavaVersion=1.5
-Xms40m
-Xmx740m
-Xss4m
-XX:PermSize=128m
-XX:MaxPermSize=128m
-XX:CompileThreshold=5
-XX:MaxGCPauseMillis=10
-XX:MaxHeapFreeRatio=70
-XX:+UseConcMarkSweepGC
-XX:+CMSIncrementalMode
-XX:+CMSIncrementalPacing
-Dcom.sun.management.jmxremote
-Djava.class.path=D:\eclipse VT preconfigured\eclipse\plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
file.encoding=Cp1252
file.encoding.pkg=sun.io
file.separator=\
java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment
java.awt.printerjob=sun.awt.windows.WPrinterJob
java.class.path=D:\eclipse VT preconfigured\eclipse\plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
java.class.version=50.0
java.endorsed.dirs=c:\Program Files\Java\jdk1.6.0_04\jre\lib\endorsed
java.ext.dirs=c:\Program Files\Java\jdk1.6.0_04\jre\lib\ext;C:\WINDOWS\Sun\Java\lib\ext
java.home=c:\Program Files\Java\jdk1.6.0_04\jre
java.io.tmpdir=C:\DOCUME~1\argus\LOCALS~1\Temp\
java.library.path=D:\eclipse VT preconfigured\eclipse;.;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;c:/Program Files/Java/jdk1.6.0_04/jre/bin/client;c:/Program Files/Java/jdk1.6.0_04/jre/bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\TortoiseSVN\bin;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\Java\jdk1.6.0_04\bin;C:\Program Files\MySQL\MySQL Server 5.1\bin;C:\Documents and Settings\argus\My Documents\apache-ant-1.7.1-bin\apache-ant-1.7.1\bin;C:\Documents and Settings\argus\My Documents\apache-maven-2.0.10\bin;C:\Documents and Settings\argus\My Documents\groovy-binary-1.7.3\groovy-1.7.3\bin;C:\Documents and Settings\argus\My Documents\patch-2.5.9-7-bin\bin
java.rmi.server.randomIDs=true
java.runtime.name=Java(TM) SE Runtime Environment
java.runtime.version=1.6.0_04-b12
java.specification.name=Java Platform API Specification
java.specification.vendor=Sun Microsystems Inc.
java.specification.version=1.6
java.vendor=Sun Microsystems Inc.
java.vendor.url=http://java.sun.com/
java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi
java.version=1.6.0_04
java.vm.info=mixed mode
java.vm.name=Java HotSpot(TM) Client VM
java.vm.specification.name=Java Virtual Machine Specification
java.vm.specification.vendor=Sun Microsystems Inc.
java.vm.specification.version=1.0
java.vm.vendor=Sun Microsystems Inc.
java.vm.version=10.0-b19
line.separator=
.
.
.

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评论（8）

少女的英雄梦 2024-09-18 02:41:56

看来 Eclipse 仍然指的是 JRE 而不是 JDK。此外，Eclipse 中的默认运行时（可在“首选项”对话框的“已安装的运行时”页面中找到）可能是 JRE。

我注意到，有时会出现这种情况，因为获得了多个虚拟机配置，并且应用了第一个或最后一个配置。您可以通过转到 Eclipse 的“关于”页面，然后查看“安装详细信息”中的“配置”选项卡来确认是否是这种情况（在 Helios 中）。通常，罪魁祸首是 eclipse.ini 中缺少新行。

It appears that Eclipse is still referring to a JRE instead of a JDK. Also, the default runtime in Eclipse (found in the "Installed Runtimes" page of the Preferences dialog) might be a JRE.

I've noticed that this sometimes occurs due to multiple VM configurations being obtained, with the first or the last being applied. You can confirm whether this is the case (in Helios), by going to the About page of Eclipse, and then viewing the Configuration tab in Installation Details. Usually the culprit turns out to be a missing new line in eclipse.ini.

回复 原文
北斗星光 2024-09-18 02:41:56

也许您正在重用在 JDK 外部设置 JRE 时所做的“运行配置”。创建一个新的“运行配置”，确保该选项卡指示 Java JDK。

Perhaps you are reusing a "Run configuration" you did when the JRE was set up outside the JDK. Create a new "Run Configuration", making sure that the tab is indicated Java JDK.

回复 原文
客…行舟 2024-09-18 02:41:56

尝试将 JAVA_HOME 设置为 JDK 而不是 JRE ？

Try setting JAVA_HOME to JDK and not to JRE ?

回复 原文
廻憶裏菂餘溫 2024-09-18 02:41:56

当您使用 Eclipse 创建 Maven 项目时，项目属性的文本文件编码可能与 pom.xml 中的 project.build.sourceEncoding 不同。如果是这种情况，那么当您构建项目时，您会收到错误

“无法在以下位置找到 Javac 编译器：...”

例如，我的文本文件编码是 GBK，而我的 project.build.sourceEncoding 是 UTF-8。我刚刚将文本文件编码修改为 UTF-8，一切正常！

When you created your Maven project with Eclipse, maybe the text file encoding of your project's properties and the project.build.sourceEncoding in your pom.xml were not the same. If that's the case, then when you built the project, you'd get the error

"Unable to locate the Javac Compiler in:..."

For example, my text file encoding was GBK, and my project.build.sourceEncoding was UTF-8. I just modified my text file encoding to UTF-8, and everything was OK!

回复 原文
南街九尾狐 2024-09-18 02:41:56

我也遇到过这样的问题。

就我而言，事实证明 JAVA_HOME 仅为我的用户定义，而 PATH 为系统设置，并且 maven 插件使用默认 JRE 而不是 JDK。
因此，请确保 JAVA_HOME 和 PATH 位于同一范围内（我将两个变量都放在系统中，并将 JAVA_HOME 添加为 PATH 中的第一部分）。

希望它能帮助某人。

I had also this kind of problems.

In my case it turned out that JAVA_HOME was defined for my user only while PATH was set for the system and maven plugin used default JRE instead of JDK.
So make sure that JAVA_HOME and PATH are in the same scope (I put both variables for system and added JAVA_HOME as the first part in PATH).

Hope it helps someone.

回复 原文
伴我老 2024-09-18 02:41:56

请注意 -vm 选项的格式 - 准确非常重要：

-vm 选项及其值（路径）必须位于不同的行上。
该值必须是 Java 可执行文件的完整绝对路径，而不仅仅是 Java 主目录。
-vm 选项必须出现在 -vmargs 选项之前，因为 -vmargs 之后的所有内容都会直接传递到 JVM。

Note the format of the -vm option - it is important to be exact:

The -vm option and its value (the path) must be on separate lines.
The value must be the full absolute path to the Java executable, not just to the Java home directory.
The -vm option must occur before the -vmargs option, since everything after -vmargs is passed directly to the JVM.

回复 原文
回梦 2024-09-18 02:41:56

如果所有环境都很好，但您仍然遇到构建错误，那么最后的方法是将 JAVA_HOME 设置为 JDK 1.5 或更高版本。然后从命令提示符构建项目。构建应该会成功。

If all the environments are fine and you are still getting build errors then the final approach is to set JAVA_HOME as JDK 1.5 or above. Then build the project from the command prompt. The build should be successful.

回复 原文
随遇而安 2024-09-18 02:41:56

块引用

将 JRE 转换为 JDK 的

： ->Goto windows
-> 偏好设置
->在左上角搜索框中输入已安装的 JRE
-> 单击已安装的 JRE
-> 从右侧对话框中选择add
->单击标准虚拟机
->选择“JREHOME”目录并执行以下操作“C:\ProgramFiles\java\jdk1.8.0_131”
->然后输入jdk1.8.0_131“JRE NAME”
-> 单击“完成”。

Blockquote

TO CONVERT JRE TO JDK:

->Goto windows
->Preferences
->type as installed JRE's in the left top searchbox
->click installed JRE's
->select add from the right dialogBox
->click standard vm
->select the directory for "JREHOME" and do the following "C:\ProgramFiles\java\jdk1.8.0_131"
->then type as jdk1.8.0_131 "JRE NAME"
->click finish.

回复 原文
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