SSHJ 和 Maven 阴影插件答案

【问题标题】：SSHJ and the Maven shade pluginSSHJ 和 Maven 阴影插件
【发布时间】：2013-11-17 21:45:23
【问题描述】：

在 Eclipse 中测试 SSHJ，一切看起来都不错。但是当我使用 Maven shade 插件打包 SSHJ 时，我得到了以下错误：

Exception in thread "main" net.schmizz.sshj.userauth.UserAuthException: Exhausted available authentication methods
at net.schmizz.sshj.SSHClient.auth(SSHClient.java:217)
at net.schmizz.sshj.SSHClient.authPublickey(SSHClient.java:316)
at net.schmizz.sshj.SSHClient.authPublickey(SSHClient.java:365)
at net.schmizz.sshj.SSHClient.authPublickey(SSHClient.java:295)
at no.f12.SshRepository.executeTaskOnHost(SshRepository.java:23)
at no.f12.SshService.serviceCommand(SshService.java:22)
at no.f12.App.main(App.java:29)

添加

Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

将错误消息更改为：

Exception in thread "main" net.schmizz.sshj.transport.TransportException: Unable to reach a settlement: [] and [aes128-ctr, aes192-ctr, aes256-ctr, arcfour256, arcfour128, aes128-gcm@openssh.com, aes256-gcm@openssh.com, aes128-cbc, 3des-cbc, blowfish-cbc, cast128-cbc, aes192-cbc, aes256-cbc, arcfour, rijndael-cbc@lysator.liu.se]
at net.schmizz.sshj.transport.Proposal.firstMatch(Proposal.java:165)
at net.schmizz.sshj.transport.Proposal.negotiate(Proposal.java:147)
at net.schmizz.sshj.transport.KeyExchanger.gotKexInit(KeyExchanger.java:239)
at net.schmizz.sshj.transport.KeyExchanger.handle(KeyExchanger.java:364)
at net.schmizz.sshj.transport.TransportImpl.handle(TransportImpl.java:478)
at net.schmizz.sshj.transport.Decoder.decode(Decoder.java:127)
at net.schmizz.sshj.transport.Decoder.received(Decoder.java:195)
at net.schmizz.sshj.transport.Reader.run(Reader.java:72)

知道如何解决这个问题吗？

我为什么要使用阴影的一些背景知识......我试图达到一个点，即 Java 的使用和小型实用程序的分发非常简单。所以我使用这个创建了一个真正可执行的 jar：https://github.com/brianm/really-executable-jars-maven-plugin。这使我能够创建一个可执行文件来分发并添加到用户的路径中。有点像 Go 有一个包含所有依赖项的二进制文件。

【问题讨论】：

我使用的代码可以在这里找到顺便说一句：github.com/anderssv/executable-ssh-util
测试工作：mvn -Passembly clean install && cd target && /bin/bash bin/app services stop
测试失败：mvn clean install && cd target && ./executable-ssh-util-1.0-SNAPSHOT.jar services stop

标签： java maven bouncycastle maven-shade-plugin sshj

【解决方案1】：

我遇到了这个确切的问题。我终于放弃了尝试把所有东西都放在一个大的“uberjar”中。

相反，我使用 maven-assembly-plugin 组装了所有 jar，然后将它们提取并添加到类路径中以便执行，例如'java -cp all-needed-libs/* com.company.MainClass'.

【讨论】：

【解决方案2】：

另一种可行的方法是将 bouncycastle 添加到 JRE 扩展库中。

例如，将“bcprov-jdk15on-1.49.jar”放在主机上的文件夹“$JAVA_HOME/jre/lib/ext/”中。

【讨论】：

【解决方案3】：

您必须签署 jar，这是 Javax.security 的要求。我遇到了类似的问题，我的测试中有堆栈跟踪：

Cannot init Cipher factory: blowfish-cbc
java.lang.SecurityException: JCE cannot authenticate the provider BC
    at javax.crypto.Cipher.getInstance(Cipher.java:642)
    at javax.crypto.Cipher.getInstance(Cipher.java:580)
    at net.schmizz.sshj.common.SecurityUtils.getCipher(SecurityUtils.java:96)
    at net.schmizz.sshj.transport.cipher.BaseCipher.init(BaseCipher.java:88)
    ....
Caused by: java.util.jar.JarException: file:/test-jar-with-dependencies.jar has unsigned entries - library.properties
    at javax.crypto.JarVerifier.verifySingleJar(JarVerifier.java:462)
    at javax.crypto.JarVerifier.verifyJars(JarVerifier.java:322)
    at javax.crypto.JarVerifier.verify(JarVerifier.java:250)
    at javax.crypto.JceSecurity.verifyProviderJar(JceSecurity.java:161)
    at javax.crypto.JceSecurity.getVerificationResult(JceSecurity.java:187)
    at javax.crypto.Cipher.getInstance(Cipher.java:638)
    at javax.crypto.Cipher.getInstance(Cipher.java:580)
    at net.schmizz.sshj.common.SecurityUtils.getCipher(SecurityUtils.java:96)
    at net.schmizz.sshj.transport.cipher.BaseCipher.init(BaseCipher.java:88)
    at net.schmizz.sshj.DefaultConfig.initCipherFactories(DefaultConfig.java:152)
    at net.schmizz.sshj.DefaultConfig.<init>(DefaultConfig.java:107)

【讨论】：