無法從命令行運行帶有mysql連接器的類

我試圖運行一個使用MySQL連接器mysql-connector-java-5.1.30-bin.jar的編譯java類文件，但是執行失敗。在運行和Eclipse等IDE時，它工作正常。無法從命令行運行帶有mysql連接器的類

~/dropbox/workspace/mysqltut/src/zetcode/包含以下文件：

mysql-connector-java-5.1.30-bin.jar 
Version.class 
Version.java

在終端導航到~/dropbox/workspace/mysqltut/src/zetcode/後，我可以;噸弄清楚如何得到它才能正常運行。

這是我的嘗試和他們的結果。

嘗試＃1
java -cp /java -cp /mysql-connector-java-5.1.30-bin.jar Version

Error: Could not find or load main class Version`

嘗試＃2
java -cp .:mysql-connector-java-5.1.30-bin.jar Version

Exception in thread "main" java.lang.NoClassDefFoundError: Version (wrong name: zetcode/Version) 
    at java.lang.ClassLoader.defineClass1(Native Method) 
    at java.lang.ClassLoader.defineClass(ClassLoader.java:800) 
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) 
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) 
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71) 
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361) 
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425) 
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:

嘗試3
java -cp .;mysql-connector-java-5.1.30-bin.jar Version

Usage: java [-options] class [args...] 
      (to execute a class) 
    or java [-options] -jar jarfile [args...] 
      (to execute a jar file) 
where options include: 
    -d32  use a 32-bit data model if available 
    -d64  use a 64-bit data model if available 
    -server to select the "server" VM 
        The default VM is server, 
        because you are running on a server-class machine. 


    -cp <class search path of directories and zip/jar files> 
    -classpath <class search path of directories and zip/jar files> 
        A : separated list of directories, JAR archives, 
        and ZIP archives to search for class files. 
    -D<name>=<value> 
        set a system property 
    -verbose:[class|gc|jni] 
        enable verbose output 
    -version  print product version and exit 
    -version:<value> 
        require the specified version to run 
    -showversion print product version and continue 
    -jre-restrict-search | -no-jre-restrict-search 
        include/exclude user private JREs in the version search 
    -? -help  print this help message 
    -X   print help on non-standard options 
    -ea[:<packagename>...|:<classname>] 
    -enableassertions[:<packagename>...|:<classname>] 
        enable assertions with specified granularity 
    -da[:<packagename>...|:<classname>] 
    -disableassertions[:<packagename>...|:<classname>] 
        disable assertions with specified granularity 
    -esa | -enablesystemassertions 
        enable system assertions 
    -dsa | -disablesystemassertions 
        disable system assertions 
    -agentlib:<libname>[=<options>] 
        load native agent library <libname>, e.g. -agentlib:hprof 
        see also, -agentlib:jdwp=help and -agentlib:hprof=help 
    -agentpath:<pathname>[=<options>] 
        load native agent library by full pathname 
    -javaagent:<jarpath>[=<options>] 
        load Java programming language agent, see java.lang.instrument 
    -splash:<imagepath> 
        show splash screen with specified image 
See http://www.oracle.com/technetwork/java/javase/documentation/index.html for more details. 
-bash: mysql-connector-java-5.1.30-bin.jar: command not found

嘗試＃4
我將mysql-connector-java-5.1.30-bin移出zetcode文件夾，並將其放在lib文件夾中一層。然後我重新導航讓我在~/dropbox/workspace/mysqltut/src/現在跑了：
java -cp .:lib/mysql-connector-java-5.1.30-bin.jar zetcode/Version

May 02, 2014 10:54:31 PM zetcode.Version main 
SEVERE: No suitable driver found for jdbc:mysql://localhost:3306/ 
java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/ 
    at java.sql.DriverManager.getConnection(DriverManager.java:596) 
    at java.sql.DriverManager.getConnection(DriverManager.java:215) 
    at zetcode.Version.main(Version.java:24)

來源

2014-05-02 dbconfession

你需要在你的classpath的罐子。將類路徑指向目錄將使ClassLoader在該目錄中查找類，但不會看到這些jar並查找它們。類路徑中的每個元素都是一個根，類加載器將在該根下掃描類和資源。 JRE ClassLoaders不支持嵌套類路徑根。

來源

2014-05-02 19:19:55 evanchooly

我敢肯定的罐子包含在類路徑。我編輯了原始帖子以包含三次嘗試及其結果。請讓我知道我做錯了什麼。謝謝 – dbconfession

我加了第四次嘗試，結果是 – dbconfession

試試這個，

set classpath="mysql jar location";.; 
javac fileName.java

來源

2014-05-03 03:43:39

投降Kannan吧？我沒有問如何編譯。 .class文件已經被創建。 – dbconfession

無法從命令行運行帶有mysql連接器的類

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