Runtime.getRuntime().Exec()环境与cmd环境不同吗？

Question

我尝试使用运行时从我的代码运行一个jar，command.The jar通过RMI.It连接到另一个主机，通过一个异常退出。

但是当我从cmd打开这个罐子时，它工作得很好。

jar有5个参数。

代码：

String runCommand = "java -jar WhiteboardStudent.jar "
        + "192.168.0.3" + " " 
        + "2000" + " " 
        + "2001" + " " 
        + "test" + " 0" ;
final Process proc = Runtime
        .getRuntime()
        .exec(runCommand,null,new File("util/"));

命令提示符：

 java -jar WhiteboardStudent.jar 192.168.0.3 2000 2001 test 0

抛出异常的代码如下：

 Object proxy = registry.lookup("RWD");
 Whiteboard whiteboard = (Whiteboard)proxy;

我只是stumped.any ideas？

抛出异常的函数：

Registry registry = LocateRegistry.getRegistry(
                hostname, Integer.parseInt(whiteboardPort)
                );
String serviceName = "RemoteWhiteboard" + sessionID;
Object proxy = registry.lookup(serviceName);
Whiteboard whiteboard = (Whiteboard)proxy;
int userid = whiteboard.userRegistry(userName, "");
Main mainFrame = new Main(sessions, sessionID,
    whiteboard,userid,"");

Answer 1

我的建议是在代码中尝试绝对路径：

String runCommand = "java -jar /c/users/xxx/WhiteboardStudent.jar "
    + "192.168.0.3" + " " 
    + "2000" + " " 
    + "2001" + " " 
    + "test" + " 0" ;