为什么执行激活器给出ExceptionInInitializerError引起的：java.security.NoSuchAlgorithmException：SHA1 MessageDigest不可用？ [英] Why does executing activator give ExceptionInInitializerError caused by: java.security.NoSuchAlgorithmException: SHA1 MessageDigest not available?
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问题描述
执行启动器 > Typesafe Activator 1.2.12 在Windows上使用Java 8我遇到以下异常：
Upon executing activator from Typesafe Activator 1.2.12 on cygwin on Windows with Java 8 I'm getting the following exception:
java.lang.ExceptionInInitializerError
at xsbt.boot.Update.settings$lzycompute(Update.scala:79)
at xsbt.boot.Update.settings(Update.scala:74)
at xsbt.boot.Update.ivyLockFile$lzycompute(Update.scala:96)
at xsbt.boot.Update.apply(Update.scala:103)
at xsbt.boot.Launch.update(Launch.scala:355)
at xsbt.boot.Launch.xsbt$boot$Launch$$retrieve$1(Launch.scala:210)
at xsbt.boot.Launch$$anonfun$3.apply(Launch.scala:218)
at scala.Option.getOrElse(Option.scala:120)
at xsbt.boot.Launch.xsbt$boot$Launch$$getAppProvider0(Launch.scala:218)
at xsbt.boot.Launch$$anon$2.call(Launch.scala:198)
at xsbt.boot.Locks$GlobalLock.withChannel$1(Locks.scala:98)
at xsbt.boot.Locks$GlobalLock.xsbt$boot$Locks$GlobalLock$$withChannelRetries$1(Locks.scala:81)
at xsbt.boot.Locks$GlobalLock$$anonfun$withFileLock$1.apply(Locks.scala:102)
at xsbt.boot.Using$.withResource(Using.scala:11)
at xsbt.boot.Using$.apply(Using.scala:10)
at xsbt.boot.Locks$GlobalLock.ignoringDeadlockAvoided(Locks.scala:62)
at xsbt.boot.Locks$GlobalLock.withLock(Locks.scala:52)
at xsbt.boot.Locks$.apply0(Locks.scala:31)
at xsbt.boot.Locks$.apply(Locks.scala:28)
at xsbt.boot.Launch.locked(Launch.scala:240)
at xsbt.boot.Launch.app(Launch.scala:149)
at xsbt.boot.Launch.app(Launch.scala:147)
at xsbt.boot.Launch$.run(Launch.scala:102)
at xsbt.boot.Launch$$anonfun$apply$1.apply(Launch.scala:36)
at xsbt.boot.Launch$.launch(Launch.scala:117)
at xsbt.boot.Launch$.apply(Launch.scala:19)
at xsbt.boot.Boot$.runImpl(Boot.scala:44)
at xsbt.boot.Boot$.main(Boot.scala:20)
at xsbt.boot.Boot.main(Boot.scala)
Caused by: java.lang.RuntimeException: The SHA1 algorithm is not available in your classpath
at org.apache.ivy.core.cache.DefaultRepositoryCacheManager.<clinit>(DefaultRepositoryCacheManager.java:86)
... 29 more
Caused by: java.security.NoSuchAlgorithmException: SHA1 MessageDigest not available
at sun.security.jca.GetInstance.getInstance(GetInstance.java:159)
at java.security.Security.getImpl(Security.java:695)
at java.security.MessageDigest.getInstance(MessageDigest.java:159)
at org.apache.ivy.core.cache.DefaultRepositoryCacheManager.<clinit>(DefaultRepositoryCacheManager.java:84)
... 29 more
Error during sbt execution: java.lang.ExceptionInInitializerError
sbt
解决方案是什么？
推荐答案
类似的错误有一天，在我的情况下，我不得不手工解开一些Java *。pack 文件。
I had similar error one day and in my case I had to unpack some Java *.pack files by hand.
$ find . -type f -name '*.pack'
./jre/lib/charsets.pack
./jre/lib/deploy.pack
./jre/lib/ext/jfxrt.pack
./jre/lib/ext/localedata.pack
./jre/lib/javaws.pack
./jre/lib/jsse.pack
./jre/lib/plugin.pack
./jre/lib/rt.pack
./lib/tools.pack
每个文件必须解压缩，如 unpack200.exe jsse.pack jsse.jar ，然后问题SHA1算法不可用类路径。
Each file had to be unpacked like unpack200.exe jsse.pack jsse.jar and then problem with "The SHA1 algorithm is not available in your classpath" was solved.
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