无法在Eclipse中运行Ant Build

Question

我的蚂蚁模型最近某个时候停止工作了。我不知道确切的时间，因为我只是偶尔在这个项目中进行ant构建。我得到以下弹出窗口：

错误仅适用于此项目。我可以从另一个项目运行构建没有问题。

build.xml文件可能非常简单，但仍然会导致错误：

<project basedir=".">
    <target name="init">
    </target>
</project>

我检查了Eclipse的日志，发现了以下错误：

!SESSION 2020-10-15 04:24:23.311 -----------------------------------------------
eclipse.buildId=4.17.0.I20200902-1800
java.version=13.0.1
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US
Framework arguments:  -product org.eclipse.epp.package.java.product
Command-line arguments:  -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.java.product

!ENTRY org.eclipse.jface 2 0 2020-10-15 04:24:25.323
!MESSAGE Keybinding conflicts occurred.  They may interfere with normal accelerator operation.
!SUBENTRY 1 org.eclipse.jface 2 0 2020-10-15 04:24:25.323
!MESSAGE A conflict occurred for CTRL+SHIFT+T:
Binding(CTRL+SHIFT+T,
  ParameterizedCommand(Command(org.eclipse.jdt.ui.navigate.open.type,Open Type,
    Open a type in a Java editor,
    Category(org.eclipse.ui.category.navigate,Navigate,null,true),
    org.eclipse.ui.internal.WorkbenchHandlerServiceHandler@5f67181f,
    ,,true),null),
  org.eclipse.ui.defaultAcceleratorConfiguration,
  org.eclipse.ui.contexts.window,,,system)
Binding(CTRL+SHIFT+T,
  ParameterizedCommand(Command(org.eclipse.lsp4e.symbolinworkspace,Go to Symbol in Workspace,
    ,
    Category(org.eclipse.lsp4e.category,Language Servers,null,true),
    org.eclipse.ui.internal.WorkbenchHandlerServiceHandler@1169fdfd,
    ,,true),null),
  org.eclipse.ui.defaultAcceleratorConfiguration,
  org.eclipse.ui.contexts.window,,,system)

!ENTRY org.eclipse.e4.ui.workbench 4 0 2020-10-15 04:24:27.543
!MESSAGE Unable to retrieve the bundle from the URI: bundleclass://org.eclipse.recommenders.news.rcp/org.eclipse.recommenders.internal.news.rcp.toolbar.NewsToolControl

!ENTRY org.eclipse.egit.ui 2 0 2020-10-15 04:24:28.090
!MESSAGE Warning: The environment variable HOME is not set. The following directory will be used to store the Git
user global configuration and to define the default location to store repositories: 'C:\Users\Joshua'. If this is
not correct please set the HOME environment variable and restart Eclipse. Otherwise Git for Windows and
EGit might behave differently since they see different configuration options.
This warning can be switched off on the Team > Git > Confirmations and Warnings preference page.

    !ENTRY org.eclipse.ant.launching 4 120 2020-10-15 04:24:37.887
    !MESSAGE Error logged from Ant UI: 
    !STACK 0
    java.net.SocketException: Socket closed
      at java.base/sun.nio.ch.NioSocketImpl.endAccept(NioSocketImpl.java:689)
      at java.base/sun.nio.ch.NioSocketImpl.accept(NioSocketImpl.java:762)
      at java.base/java.net.ServerSocket.implAccept(ServerSocket.java:662)
      at java.base/java.net.ServerSocket.platformImplAccept(ServerSocket.java:628)
      at java.base/java.net.ServerSocket.implAccept(ServerSocket.java:604)
      at java.base/java.net.ServerSocket.implAccept(ServerSocket.java:561)
      at java.base/java.net.ServerSocket.accept(ServerSocket.java:518)
      at org.eclipse.ant.internal.launching.launchConfigurations.RemoteAntBuildListener$ServerConnection.run(RemoteAntBuildListener.java:91)

    !ENTRY org.eclipse.core.jobs 4 2 2020-10-15 04:24:37.888
    !MESSAGE An internal error occurred during: "Launching Hypnos build.xml".
    !STACK 0
    java.lang.NullPointerException
      at org.eclipse.jdt.launching.AbstractJavaLaunchConfigurationDelegate.getBootpathExt(AbstractJavaLaunchConfigurationDelegate.java:364)
      at org.eclipse.jdt.launching.AbstractJavaLaunchConfigurationDelegate.getVMSpecificAttributesMap(AbstractJavaLaunchConfigurationDelegate.java:679)
      at org.eclipse.jdt.launching.JavaLaunchDelegate.getVMRunnerConfiguration(JavaLaunchDelegate.java:92)
      at org.eclipse.jdt.launching.JavaLaunchDelegate.launch(JavaLaunchDelegate.java:160)
      at org.eclipse.ant.internal.launching.launchConfigurations.AntLaunchDelegate.runInSeparateVM(AntLaunchDelegate.java:580)
      at org.eclipse.ant.internal.launching.launchConfigurations.AntLaunchDelegate.launch(AntLaunchDelegate.java:251)
      at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:807)
      at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:718)
      at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:1021)
      at org.eclipse.debug.internal.ui.DebugUIPlugin$2.run(DebugUIPlugin.java:1224)
      at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)

我使用的是Eclipse 2020-06。我尝试升级到Eclipse 2020-09来解决这个问题，但没有成功。

根据eclipse的JVM是eclipse。vm=C:\java\jdk-13.0.1\bin\server\jvm。dll

该java文件夹中的释放文件说：

BUILD_TYPE="commercial"
IMPLEMENTOR="Oracle Corporation"
JAVA_VERSION="13.0.1"
JAVA_VERSION_DATE="2019-10-15"
MODULES="java.base java.compiler java.datatransfer java.xml java.prefs java.desktop java.instrument java.logging java.management java.security.sasl java.naming java.rmi java.management.rmi java.net.http java.scripting java.security.jgss java.transaction.xa java.sql java.sql.rowset java.xml.crypto java.se java.smartcardio jdk.accessibility jdk.internal.vm.ci jdk.management jdk.unsupported jdk.internal.vm.compiler jdk.aot jdk.internal.jvmstat jdk.attach jdk.charsets jdk.compiler jdk.crypto.ec jdk.crypto.cryptoki jdk.crypto.mscapi jdk.dynalink jdk.internal.ed jdk.editpad jdk.hotspot.agent jdk.httpserver jdk.internal.le jdk.internal.opt jdk.internal.vm.compiler.management jdk.jartool jdk.javadoc jdk.jcmd jdk.management.agent jdk.jconsole jdk.jdeps jdk.jdwp.agent jdk.jdi jdk.jfr jdk.jlink jdk.jshell jdk.jsobject jdk.jstatd jdk.localedata jdk.management.jfr jdk.naming.dns jdk.naming.rmi jdk.net jdk.pack jdk.rmic jdk.scripting.nashorn jdk.scripting.nashorn.shell jdk.sctp jdk.security.auth jdk.security.jgss jdk.unsupported.desktop jdk.xml.dom jdk.zipfs"
OS_ARCH="x86_64"
OS_NAME="Windows"
SOURCE=".:hg:b06ae01c3eea open:hg:8d03d066c4e8"

知道如何解决这个问题吗？

Answer 1

在将Eclipse升级到2022-03之后，我遇到了类似的错误。Ant不会运行，但没有显示错误。然后我注意到了java。网SocketException：工作区日志中出现套接字关闭错误。

只有当我使用最新的Java版本，但需要使用JDK 1.8时，才能按照另一个答案的建议更改JRE。由于我无法解决这个问题，我只是将Eclipse降级到2021至2012年。

显然，在未来的版本中，至少需要Java11来运行Ant：https://bugs.eclipse.org/bugs/show_bug.cgi?id=579317

Answer 2

这似乎与用于运行Ant脚本的Java有关。

在运行配置中，在JRE选项卡中，确保选择了JRE/JDK（对于现有的Ant运行配置，由于首选项的更改，可能会丢失先前选择的JRE/JDKJava