在命令行运行java程序,我做错了什么？

Question

注意 我正在运行Windows,路径看起来像是linus,因为我手动输入它,这就是我对路径的看法.

我正在尝试运行一个java类我已经构建来诊断我与数据库的连接,它引用了oracle jdbc适配器.

当我在没有类路径的情况下运行它时:

%> java DBDiagnostics <connectionString>

当它到达以下代码行时我得到一个异常:

Class.forName("oracle.jdbc.pool.OracleDataSource").newInstance();

除以下异常:

java.lang.ClassNotFoundException: oracle.jdbc.pool.OracleDataSource
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:169)
        at DBDiagnostics.GetConnection(DBDiagnostics.java:43)
        at DBDiagnostics.runDiagnostic(DBDiagnostics.java:29)
        at DBDiagnostics.main(DBDiagnostics.java:18)
Creating connection.
java.sql.SQLException: No suitable driver found for lskd
        at java.sql.DriverManager.getConnection(DriverManager.java:602)
        at java.sql.DriverManager.getConnection(DriverManager.java:207)
        at DBDiagnostics.GetConnection(DBDiagnostics.java:55)
        at DBDiagnostics.runDiagnostic(DBDiagnostics.java:29)
        at DBDiagnostics.main(DBDiagnostics.java:18)
Veryfying connectivity to Database
Exception in thread "main" java.lang.NullPointerException
        at DBDiagnostics.verifyTable(DBDiagnostics.java:86)
        at DBDiagnostics.verifyTable(DBDiagnostics.java:76)
        at DBDiagnostics.verifyDatabseConnectivity(DBDiagnostics.java:68)
        at DBDiagnostics.runDiagnostic(DBDiagnostics.java:36)
        at DBDiagnostics.main(DBDiagnostics.java:18)

我认为这是因为我需要将它包含在类路径中.

所以,我尝试将它添加到类路径中,如下所示:

%> java -classpath .:ojdbc6.jar DBDiagnostics <connectionString>

VM只是说它找不到这个类:

Exception in thread "main" java.lang.NoClassDefFoundError: DBDiagnostics
Caused by: java.lang.ClassNotFoundException: DBDiagnostics
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
Could not find the main class: DBDiagnostics.  Program will exit.

我知道这是一个我应该知道答案的问题,但我做错了什么？

Answer 1

用分号替换冒号:

java -classpath .;ojdbc6.jar DBDiagnostics <connectionString>