尝试按照本 Hibernate 教程中的步骤 #4 进行操作:
mvn exec:java -Dexec.mainClass="org.hsqldb.Server" -Dexec.args="-database.0 file:target/data/tutorial"
我收到此错误:
[INFO] Scanning for projects...
[INFO] Searching repository for plugin with prefix: 'exec'.
[INFO] ------------------------------------------------------------------------
[INFO] Building First Hibernate Tutorial
[INFO] task-segment: [exec:java]
[INFO] ------------------------------------------------------------------------
[INFO] Preparing exec:java
[INFO] No goals needed for project - skipping
[INFO] [exec:java {execution: default-cli}]
[WARNING]
java.lang.ClassNotFoundException: org.hsqldb.Server
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:285)
at java.lang.Thread.run(Thread.java:662)
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] An exception occured while executing the Java class. org.hsqldb.Server
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: < 1 second
[INFO] Finished at: Mon Dec 17 16:35:42 EST 2012
[INFO] Final Memory: 6M/15M
[INFO] ------------------------------------------------------------------------
尽管下载了最新的 hsqldb 包并按照FAQ安装了它。该hsqldb.jar
文件位于C:\hsqldb-2.2.9\hsqldb-2.2.9\hsqldb\lib
并且类路径 env var 指向它:
CLASSPATH=C:\hsqldb-2.2.9\hsqldb-2.2.9\hsqldb\lib
那么为什么我会收到这个ClassNotFoundException: org.hsqldb.Server错误?
我究竟做错了什么?