我做个GUI程序,用了Access数据库,链接方式如下:
[code="java"]private String driverName = "sun.jdbc.odbc.JdbcOdbcDriver";
private String url = "jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ=db\edHelper.mdb";
private String userName = "??";
private String passWord = "0726abcd0726";
private Connection connect() {
Connection conn = null;
try {
Class.forName(this.driverName);
conn = DriverManager.getConnection(this.url, this.userName,
this.passWord);
} catch (Exception e) {
System.out.println(e.getMessage());
}
return conn;
}
[/code]
这种链接方式运行是没有任何错误的,但是当我打包jar时却报错这样的错误,一直没有找到解决:
DOS模式:
C:>java -jar EDhelper.jar
[Microsoft][ODBC Microsoft Access Driver] '(未知的)'不是一个有效的路径。 确定路
径名称拼写是否正确,以及是否连接到文件存放的服务器。
Exception in thread "main" java.lang.NullPointerException
at com.bruce.EDhelper.core.AccessDB.executeQuery(AccessDB.java:53)
at com.bruce.EDhelper.core.AdvancedEdit.initConfig(AdvancedEdit.java:67)
at com.bruce.EDhelper.core.AdvancedEdit.(AdvancedEdit.java:43)
at com.bruce.EDhelper.UI.EDFrame.(EDFrame.java:88)
at com.bruce.EDhelper.UI.EDFrame.main(EDFrame.java:444)
各位“大虾”如何解决这个问题呢?