我按照此处提到的步骤进行操作:http://docs.janusgraph.org/latest/getting-started.html
运行命令时出错:Logger.getLogger(<your-class>.class.getName()).log(Level.SEVERE, null, ex);
错误追踪:
bin/gremlin.sh
我正在使用以下java版本:
Exception in thread "main" java.io.UnsupportedEncodingException: UTF-8i
at sun.nio.cs.StreamEncoder.forOutputStreamWriter(StreamEncoder.java:61)
at java.io.OutputStreamWriter.<init>(OutputStreamWriter.java:100)
at jline.console.ConsoleReader.<init>(ConsoleReader.java:231)
at jline.console.ConsoleReader.<init>(ConsoleReader.java:221)
at jline.console.ConsoleReader.<init>(ConsoleReader.java:213)
at org.codehaus.groovy.tools.shell.PatchedConsoleReader.<init>(PatchedConsoleReader.groovy:32)
at org.codehaus.groovy.vmplugin.v7.IndyInterface.selectMethod(IndyInterface.java:232)
at org.codehaus.groovy.tools.shell.InteractiveShellRunner.<init>(InteractiveShellRunner.groovy:50)
at org.codehaus.groovy.vmplugin.v7.IndyInterface.selectMethod(IndyInterface.java:232)
at org.apache.tinkerpop.gremlin.console.Console.<init>(Console.groovy:118)
at org.codehaus.groovy.vmplugin.v7.IndyInterface.selectMethod(IndyInterface.java:232)
at org.apache.tinkerpop.gremlin.console.Console.main(Console.groovy:478)
有谁能告诉我如何避免这个错误并开始使用JanusGraph?
答案 0 :(得分:0)
从堆栈跟踪中,看起来编码设置为UTF-8i
,这不是有效值。有关典型值,请参阅StandardCharsets。检查您的LC_CTYPE
环境变量或JAVA_OPTIONS
,看看它是否会覆盖input.encoding
或file.encoding
。
例如,这会重新创建上面的堆栈跟踪:
$ export JAVA_OPTIONS=-Dinput.encoding=UTF-8i
$ bin/gremlin.sh
\,,,/
(o o)
-----oOOo-(3)-oOOo-----
Exception in thread "main" java.io.UnsupportedEncodingException: UTF-8i
at sun.nio.cs.StreamEncoder.forOutputStreamWriter(StreamEncoder.java:61)
at java.io.OutputStreamWriter.<init>(OutputStreamWriter.java:100)
at jline.console.ConsoleReader.<init>(ConsoleReader.java:231)
at jline.console.ConsoleReader.<init>(ConsoleReader.java:221)
at jline.console.ConsoleReader.<init>(ConsoleReader.java:213)
etc...
取消设置JAVA_OPTIONS
变量使其再次起作用:
$ unset JAVA_OPTIONS
$ bin/gremlin.sh
\,,,/
(o o)
-----oOOo-(3)-oOOo-----
plugin activated: janusgraph.imports
plugin activated: tinkerpop.server
plugin activated: tinkerpop.utilities
plugin activated: tinkerpop.hadoop
plugin activated: tinkerpop.spark
plugin activated: tinkerpop.tinkergraph
gremlin>