XJC（XMLJava编译器）是JAXB（JavaXML绑定）的一部分。

如果我看官网链接，最新版本的JAXB似乎是2.2.11。这是你刚刚安装最新JDK版本8u40时得到的。

以下输出显示了与JDK8u40相关的XJC版本：

../JDK8u40/bin$ ./javac -version
javac 1.8.0_40
../JDK8u40/bin$ ./xjc -version
xjc 2.2.8-b130911.1802

（原始JDK路径从OS到OS不同，因此这只是一个示例性表示。）

XJC的版本似乎不同于“最新”的JAXB版本，或者最新的JDK不包含最新的JAXB版本。

我的解决方法是只从Maven存储库安装最新的JAXB版本。听起来很容易，但是为什么现在JAXB的最新版本是2.2.12？忘记把留档放在官方网站上了？好吧，我只是试着不在乎…安装成功后我注意到这个包里面没有XJC。所以继续搜索…我找到了另一个名为“JAXB-XJC”的Maven存储库。但这只是源代码。我只是想安装XJC的最新二进制文件。我看了版本号，是2.2.11。那看起来至少比2.2.8好。

但是我在哪里可以获得XJC的最新二进制文件？

为什么我要安装最新的XJC二进制文件？因为我想知道它是否支持Java8的选项和/或是否支持XSD模式版本1.1。在互联网上的某个地方，我读到最新的XJC至少支持XSD模式版本1.1。这就足够了。但是为了解决这个问题，甲骨文似乎必须修复他们可怕的版本混乱。

更新

我试图通过克隆官方Git存储库并执行mvn清洁安装来构建JAXB。

结果：

[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] JAXB BOM ........................................... SUCCESS [  0.140 s]
[INFO] JAXB BOM with ALL dependencies ..................... SUCCESS [  0.005 s]
[INFO] JAXB Reference Implementation ...................... SUCCESS [  0.515 s]
[INFO] JAXB External parent ............................... SUCCESS [  0.009 s]
[INFO] RNGOM .............................................. SUCCESS [  3.723 s]
[INFO] Codemodel .......................................... SUCCESS [  0.008 s]
[INFO] Codemodel Core ..................................... SUCCESS [  2.622 s]
[INFO] Codemodel Annotation Compiler ...................... SUCCESS [  0.848 s]
[INFO] JAXB TXW parent .................................... SUCCESS [  0.006 s]
[INFO] TXW2 Runtime ....................................... SUCCESS [  1.920 s]
[INFO] TXW2 Compiler ...................................... SUCCESS [  1.507 s]
[INFO] JAXB Core .......................................... SUCCESS [  1.745 s]
[INFO] JAXB Runtime parent ................................ SUCCESS [  0.008 s]
[INFO] JAXB Runtime ....................................... SUCCESS [  5.932 s]
[INFO] JAXB1 Runtime ...................................... SUCCESS [  1.520 s]
[INFO] JAXB XJC ........................................... SUCCESS [  5.555 s]
[INFO] JAXB JXC ........................................... SUCCESS [  2.928 s]
[INFO] Parent for osgi testing modules. ................... SUCCESS [  0.009 s]
[INFO] osgi-test-parent ................................... SUCCESS [  1.315 s]
[INFO] osgi-test-core ..................................... SUCCESS [  0.676 s]
[INFO] JAXB bundles ....................................... SUCCESS [  0.007 s]
[INFO] Old JAXB Core ...................................... SUCCESS [  4.669 s]
[INFO] osgi-test-runtime .................................. SUCCESS [  0.677 s]
[INFO] Old JAXB Runtime ................................... SUCCESS [  3.251 s]
[INFO] osgi-test-xjc ...................................... SUCCESS [  0.637 s]
[INFO] Old JAXB XJC ....................................... SUCCESS [  4.385 s]
[INFO] osgi-test-jxc ...................................... SUCCESS [  0.607 s]
[INFO] Old JAXB JXC ....................................... SUCCESS [  2.169 s]
[INFO] JAXB Documentation parent .......................... SUCCESS [  0.005 s]
[INFO] JAXB Release Documentation ......................... SUCCESS [ 12.401 s]
[INFO] JAXB samples ....................................... SUCCESS [  0.375 s]
[INFO] JAXB RI ............................................ SUCCESS [  1.079 s]
[INFO] JAXB OSGI parent ................................... SUCCESS [  0.005 s]
[INFO] JAXB extra OSGI .................................... FAILURE [  6.668 s]
[INFO] JAXB OSGI .......................................... SKIPPED
[INFO] osgi-test-osgi ..................................... SKIPPED
[INFO] osgi-test-extra_osgi ............................... SKIPPED
[INFO] JAXB OSGi Tests .................................... SKIPPED
[INFO] JAXB WWW Help files ................................ SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 01:08 min
[INFO] Finished at: 2015-03-11T15:40:59+01:00
[INFO] Final Memory: 83M/1546M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-shade-plugin:2.0:shade (default) on project jaxb-extra-osgi: Error creating shaded jar: java.util.jar.Attributes cannot be cast to java.lang.String -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[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/MojoExecutionException
[ERROR] 
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR]   mvn <goals> -rf :jaxb-extra-osgi

JAXB额外OSGI目标的构建过程总是失败。JAXB XJC目标构建成功，但只包含一个抛出jar文件的异常，但没有名为xjc的二进制文件。那么它在哪里？