Java ssl地址的URL打开连接引发断言异常_Java_Ssl

Java ssl地址的URL打开连接引发断言异常

java ssl

Java ssl地址的URL打开连接引发断言异常,java,ssl,Java,Ssl,我使用下面这样的代码 new URL("https://google.com").openConnection(); 代码在JDK 7中运行良好，但在我使用JDK 8时会引发如下异常 Exception in thread "Goole" java.lang.AssertionError: Default directory is not an absolute path at sun.nio.fs.WindowsFileSystem.<init>(WindowsFi

我使用下面这样的代码

  new URL("https://google.com").openConnection();

代码在JDK 7中运行良好，但在我使用JDK 8时会引发如下异常

 Exception in thread "Goole" java.lang.AssertionError: Default directory is not an absolute path
    at sun.nio.fs.WindowsFileSystem.<init>(WindowsFileSystem.java:61)
    at sun.nio.fs.WindowsFileSystemProvider.<init>(WindowsFileSystemProvider.java:53)

我不理解打开SSL连接和文件系统之间的关系。所以我很困惑。有什么线索吗？

一些研究表明，如果user.dir被设置为相对路径，那么就会抛出前面提到的异常。所以我将user.dir值改为绝对路径，解决了这个问题。以下是满足好奇心的完整堆栈：

 Exception in thread "Goole" java.lang.AssertionError: Default directory is not an absolute path
at sun.nio.fs.WindowsFileSystem.<init>(WindowsFileSystem.java:61)
at sun.nio.fs.WindowsFileSystemProvider.<init>(WindowsFileSystemProvider.java:53)
at sun.nio.fs.DefaultFileSystemProvider.create(DefaultFileSystemProvider.java:36)
at java.nio.file.FileSystems$DefaultFileSystemHolder.getDefaultProvider(FileSystems.java:108)
at java.nio.file.FileSystems$DefaultFileSystemHolder.access$000(FileSystems.java:89)
at java.nio.file.FileSystems$DefaultFileSystemHolder$1.run(FileSystems.java:98)
at java.nio.file.FileSystems$DefaultFileSystemHolder$1.run(FileSystems.java:96)
at java.security.AccessController.doPrivileged(Native Method)
at java.nio.file.FileSystems$DefaultFileSystemHolder.defaultFileSystem(FileSystems.java:96)
at java.nio.file.FileSystems$DefaultFileSystemHolder.<clinit>(FileSystems.java:90)
at java.nio.file.FileSystems.getDefault(FileSystems.java:176)
at java.io.File.toPath(File.java:2234)
at sun.security.provider.SeedGenerator$1.run(SeedGenerator.java:190)
at sun.security.provider.SeedGenerator$1.run(SeedGenerator.java:168)
at java.security.AccessController.doPrivileged(Native Method)
at sun.security.provider.SeedGenerator.getSystemEntropy(SeedGenerator.java:168)
at sun.security.provider.SecureRandom$SeederHolder.<clinit>(SecureRandom.java:190)
at sun.security.provider.SecureRandom.engineNextBytes(SecureRandom.java:210)
at java.security.SecureRandom.nextBytes(SecureRandom.java:457)
at java.security.SecureRandom.next(SecureRandom.java:480)
at java.util.Random.nextInt(Random.java:329)
at sun.security.ssl.SSLContextImpl.engineInit(SSLContextImpl.java:114)
at sun.security.ssl.SSLContextImpl$DefaultSSLContext.<init>(SSLContextImpl.java:675)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
at java.lang.Class.newInstance(Class.java:433)
at java.security.Provider$Service.newInstance(Provider.java:1593)
at sun.security.jca.GetInstance.getInstance(GetInstance.java:236)
at sun.security.jca.GetInstance.getInstance(GetInstance.java:164)
at javax.net.ssl.SSLContext.getInstance(SSLContext.java:156)
at javax.net.ssl.SSLContext.getDefault(SSLContext.java:96)
at javax.net.ssl.SSLSocketFactory.getDefault(SSLSocketFactory.java:122)
at javax.net.ssl.HttpsURLConnection.getDefaultSSLSocketFactory(HttpsURLConnection.java:332)
at javax.net.ssl.HttpsURLConnection.<init>(HttpsURLConnection.java:289)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.<init>(HttpsURLConnectionImpl.java:85)
at sun.net.www.protocol.https.Handler.openConnection(Handler.java:62)
at sun.net.www.protocol.https.Handler.openConnection(Handler.java:57)
at java.net.URL.openConnection(URL.java:972)

线程“Goole”java.lang.AssertionError中的异常：默认目录不是绝对路径位于sun.nio.fs.WindowsFileSystem.（windowsfystem.java:61）位于sun.nio.fs.WindowsFileSystemProvider。（WindowsFileSystemProvider.java:53）位于sun.nio.fs.DefaultFileSystemProvider.create（DefaultFileSystemProvider.java:36）位于java.nio.file.FileSystems$DefaultFileSystemHolder.getDefaultProvider（FileSystems.java:108）位于java.nio.file.FileSystems$DefaultFileSystemHolder.access$000（FileSystems.java:89）位于java.nio.file.FileSystems$DefaultFileSystemHolder$1.run（FileSystems.java:98）位于java.nio.file.FileSystems$DefaultFileSystemHolder$1.run（FileSystems.java:96）位于java.security.AccessController.doPrivileged（本机方法）位于java.nio.file.FileSystems$DefaultFileSystemHolder.defaultFileSystem（FileSystems.java:96）位于java.nio.file.FileSystems$DefaultFileSystemHolder。（FileSystems.java:90）位于java.nio.file.FileSystems.getDefault（FileSystems.java:176）位于java.io.File.toPath（File.java:2234）位于sun.security.provider.SeedGenerator$1.run（SeedGenerator.java:190）位于sun.security.provider.SeedGenerator$1.run（SeedGenerator.java:168）位于java.security.AccessController.doPrivileged（本机方法）位于sun.security.provider.SeedGenerator.getSystemEntropy（SeedGenerator.java:168）位于sun.security.provider.SecureRandom$SeederHolder。（SecureRandom.java:190）位于sun.security.provider.SecureRandom.engineNextBytes（SecureRandom.java:210）位于java.security.SecureRandom.nextBytes（SecureRandom.java:457）在java.security.SecureRandom.next（SecureRandom.java:480）位于java.util.Random.nextInt（Random.java:329）位于sun.security.ssl.SSLContextImpl.engineInit（SSLContextImpl.java:114）位于sun.security.ssl.SSLContextImpl$DefaultSSLContext。（SSLContextImpl.java:675）位于sun.reflect.NativeConstructorAccessorImpl.newInstance0（本机方法）位于sun.reflect.NativeConstructorAccessorImpl.newInstance（NativeConstructorAccessorImpl.java:62）在sun.reflect.DelegatingConstructorAccessorImpl.newInstance（DelegatingConstructorAccessorImpl.java:45）位于java.lang.reflect.Constructor.newInstance（Constructor.java:408）位于java.lang.Class.newInstance（Class.java:433）位于java.security.Provider$Service.newInstance（Provider.java:1593）位于sun.security.jca.GetInstance.GetInstance（GetInstance.java:236）位于sun.security.jca.GetInstance.GetInstance（GetInstance.java:164）位于javax.net.ssl.SSLContext.getInstance（SSLContext.java:156）位于javax.net.ssl.SSLContext.getDefault（SSLContext.java:96）位于javax.net.ssl.SSLSocketFactory.getDefault（SSLSocketFactory.java:122）位于javax.net.ssl.HttpsURLConnection.getDefaultSSLSocketFactory（HttpsURLConnection.java:332）位于javax.net.ssl.HttpsURLConnection（HttpsURLConnection.java:289） http.HttpsURLConnectionImpl.（HttpsURLConnectionImpl.java:85）位于sun.net.www.protocol.https.Handler.openConnection（Handler.java:62）位于sun.net.www.protocol.https.Handler.openConnection（Handler.java:57）位于java.net.URL.openConnection（URL.java:972）

向我们展示更多堆栈跟踪。这真的来自于sun.nio.fs.WindowsFileSystem.（WindowsFileSystem.java:61）的

openConnection（）

？

你到底是如何将user.dir
设置为相对路径的？我想是System.setProperty（“user.dir”，…）。我认为SSL连接无论如何都不应该依赖于user.dir属性集。至少它在Java7中工作。