Question

我为Cassandra提供了Hector库的简单示例：https://github.com/zznate/cassandra-tutorial/tree/master/src/main/java/com/datastax/tutorial 编译成功了。但是我无法运行它：

        root@ns38:/home/marcin/work/java/jctserv/hector-core-1.0-3# javac -cp cassandra-thrift-1.0.6.jar:FastInfoset-1.2.2.jar:slf4j-api-1.6.1.jar:uuid-3.2.0.jar:commons-lang-2.4.jar:guava-r09.jar:speed4j-0.9.jar:commons-pool-1.5.3.jar:hector-core-1.0-3.jar InsertRowsForColumnFamilies.java TutorialCommand.java
root@ns38:/home/marcin/work/java/jctserv/hector-core-1.0-3# java InsertRowsForColumnFamilies
Exception in thread "main" java.lang.NoClassDefFoundError: InsertRowsForColumnFamilies (wrong name: com/datastax/tutorial/InsertRowsForColumnFamilies)
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: InsertRowsForColumnFamilies.  Program will exit.
root@ns38:/home/marcin/work/java/jctserv/hector-core-1.0-3#

我做错了什么？感谢。

Answer 1

您需要根据提到的包将类文件放在适当的文件夹中，然后使用classpath和完全限定的类名调用Java。见http://www.cs.usfca.edu/~parrt/course/601/lectures/java.tools.html

尝试：

java -cp cassandra-thrift-1.0.6.jar:FastInfoset-1.2.2.jar:slf4j-api-1.6.1.jar:uuid-3.2.0.jar:commons-lang-2.4.jar:guava-r09.jar:speed4j-0.9.jar:commons-pool-1.5.3.jar:hector-core-1.0-3.jar com.datastax.tutorial.InsertRowsForColumnFamilies

Answer 2

试试这个

java com.datastax.tutorial.InsertRowsForColumnFamilies

如何运行Cassandra Hector客户端示例？

2 个答案: