java - Ubuntu 上的 Bazel 和 Java 11

Question

我正在尝试使用 Java 11 来做我的 Java 作业。它在我的 OS X 机器上运行良好，但我的机器上安装了 JDK 13。我的老师使用 Ubuntu，没有安装最新的 java。如何让 Bazel 使用 JAVA 11，而不需要我的讲师更新他的 JDK。

我的.bazelrc如下:

test --test_output=errors
test --cache_test_results=yes


test --java_toolchain=@bazel_tools//tools/jdk:toolchain_java11

当我运行时:

bazel test java/test/edu/berkeley/cs/util:{hashset,hashmap}

我收到了这个奇妙的错误。

Starting local Bazel server and connecting to it...
INFO: Writing tracer profile to '/home/tomgrant/.cache/bazel/_bazel_tomgrant/75fd013422b9b35862a74918dc983c19/command.profile.gz'
INFO: Analyzed 2 targets (23 packages loaded, 287 targets configured).
INFO: Found 2 test targets...
INFO: Deleting stale sandbox base /home/tomgrant/.cache/bazel/_bazel_tomgrant/75fd013422b9b35862a74918dc983c19/sandbox
ERROR: /home/tomgrant/.cache/bazel/_bazel_tomgrant/75fd013422b9b35862a74918dc983c19/external/bazel_tools/tools/jdk/BUILD:319:1: Action external/bazel_tools/tools/jdk/platformclasspath.jar failed (Exit 1) java failed: error executing command external/remotejdk11_linux/bin/java -XX:+IgnoreUnrecognizedVMOptions '--add-exports=jdk.compiler/com.sun.tools.javac.platform=ALL-UNNAMED' -cp ... (remaining 4 argument(s) skipped)

Use --sandbox_debug to see verbose messages from the sandbox
Exception in thread "main" java.lang.IllegalArgumentException: external/local_jdk
    at jdk.compiler/com.sun.tools.javac.file.Locations$SystemModulesLocationHandler.isCurrentPlatform(Locations.java:1862)
    at jdk.compiler/com.sun.tools.javac.file.Locations$SystemModulesLocationHandler.update(Locations.java:1851)
    at jdk.compiler/com.sun.tools.javac.file.Locations$SystemModulesLocationHandler.handleOption(Locations.java:1798)
    at jdk.compiler/com.sun.tools.javac.file.Locations.handleOption(Locations.java:2062)
    at jdk.compiler/com.sun.tools.javac.file.BaseFileManager.handleOption(BaseFileManager.java:269)
    at jdk.compiler/com.sun.tools.javac.file.BaseFileManager$2.handleFileManagerOption(BaseFileManager.java:222)
    at jdk.compiler/com.sun.tools.javac.main.Option.process(Option.java:1138)
    at jdk.compiler/com.sun.tools.javac.main.Option.handleOption(Option.java:1086)
    at jdk.compiler/com.sun.tools.javac.file.BaseFileManager.handleOption(BaseFileManager.java:232)
    at jdk.compiler/com.sun.tools.javac.main.Arguments.doProcessArgs(Arguments.java:390)
    at jdk.compiler/com.sun.tools.javac.main.Arguments.processArgs(Arguments.java:347)
    at jdk.compiler/com.sun.tools.javac.main.Arguments.init(Arguments.java:246)
    at jdk.compiler/com.sun.tools.javac.api.JavacTool.getTask(JavacTool.java:185)
    at DumpPlatformClassPath.dumpJDK9AndNewerBootClassPath(DumpPlatformClassPath.java:106)
    at DumpPlatformClassPath.main(DumpPlatformClassPath.java:67)
Caused by: java.nio.file.NoSuchFileException: external/local_jdk
    at java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:92)
    at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)
    at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:116)
    at java.base/sun.nio.fs.UnixFileSystemProvider.isSameFile(UnixFileSystemProvider.java:333)
    at java.base/java.nio.file.Files.isSameFile(Files.java:1530)
    at jdk.compiler/com.sun.tools.javac.file.Locations$SystemModulesLocationHandler.isCurrentPlatform(Locations.java:1860)
    ... 14 more
INFO: Elapsed time: 8.063s, Critical Path: 0.26s
INFO: 3 processes: 3 linux-sandbox.
FAILED: Build did NOT complete successfully
//java/test/edu/berkeley/cs/util:hashset                              NO STATUS

FAILED: Build did NOT complete successfully

如果有人能解决这个问题，我会很高兴寄给您一袋 Blue Bottle bean 或类似的东西，值(value) 20 美元 =D

Answer 1

我不知道我是否正确理解了你的问题，但我现在正在寻找同样的问题。

到目前为止，我从 Bazel Dev 的链接中得到了一个答案!来自 gerrit.googlesource.com

请查看此部分:

[[java-11]]==== Java 11 支持通过替代 java 工具链支持 Java 11链接:https://docs.bazel.build/versions/master/toolchains.html[Bazel选项]。要使用 Java 11 构建 Gerrit，请指定 JDK 11 java 工具链:

$ bazel build \
      --host_javabase=@bazel_tools//tools/jdk:remote_jdk11 \
      --javabase=@bazel_tools//tools/jdk:remote_jdk11 \
      --host_java_toolchain=@bazel_tools//tools/jdk:toolchain_java11 \
      --java_toolchain=@bazel_tools//tools/jdk:toolchain_java11 \
      :release