【发布时间】：2014-07-09 00:28:44
【问题描述】：
我正在尝试将应用程序文件夹添加到 Mac 上的 Application Support 文件夹。它可以工作，但我无法写入该文件夹。当我在文件夹上执行ls -l 时，我得到：drwxr-xr-x，但由于某种原因，我无法在那里创建db 文件。
String OS = (System.getProperty("os.name")).toUpperCase();
String location;
if(OS.contains("WIN")){
location = "/" + System.getenv("APPDATA").replace("\\", "/") + "/Phantom";
}else{
location = System.getProperty("user.home");
location += "/Library/Application Support/Phantom";
}
File f = new File(location);
if(!f.isDirectory()){
f.mkdir();
}
Class.forName("org.sqlite.JDBC");
conn = DriverManager.getConnection("jdbc:sqlite:" + location + "/phantom.db");
首先，这是在 mac 上存储此信息的正确位置，对吗？假设是这样，我应该怎么做才能使它起作用？
编辑轨迹：
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:367)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:305)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:894)
at com.sun.javafx.application.LauncherImpl.access$000(LauncherImpl.java:56)
at com.sun.javafx.application.LauncherImpl$1.run(LauncherImpl.java:158)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NoClassDefFoundError: org/sqlite/NativeDB
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1929)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1814)
at java.lang.Runtime.load0(Runtime.java:809)
at java.lang.System.load(System.java:1083)
at org.sqlite.SQLiteJDBCLoader.loadNativeLibrary(SQLiteJDBCLoader.java:200)
at org.sqlite.SQLiteJDBCLoader.extractAndLoadLibraryFile(SQLiteJDBCLoader.java:148)
at org.sqlite.SQLiteJDBCLoader.loadSQLiteNativeLibrary(SQLiteJDBCLoader.java:249)
at org.sqlite.SQLiteJDBCLoader.initialize(SQLiteJDBCLoader.java:65)
at org.sqlite.core.NativeDB.load(NativeDB.java:53)
at org.sqlite.core.CoreConnection.open(CoreConnection.java:136)
at org.sqlite.core.CoreConnection.<init>(CoreConnection.java:66)
at org.sqlite.jdbc3.JDBC3Connection.<init>(JDBC3Connection.java:21)
at org.sqlite.jdbc4.JDBC4Connection.<init>(JDBC4Connection.java:23)
at org.sqlite.SQLiteConnection.<init>(SQLiteConnection.java:44)
at org.sqlite.JDBC.createConnection(JDBC.java:113)
at org.sqlite.JDBC.connect(JDBC.java:87)
at java.sql.DriverManager.getConnection(DriverManager.java:664)
at java.sql.DriverManager.getConnection(DriverManager.java:270)
at phantom.SQLite.connect(SQLite.java:46)
at phantom.SQLite.getUsers(SQLite.java:123)
at phantom.Browser.loadCustomPage(Browser.java:194)
at phantom.Main.start(Main.java:29)
at com.sun.javafx.application.LauncherImpl$8.run(LauncherImpl.java:837)
at com.sun.javafx.application.PlatformImpl$7.run(PlatformImpl.java:335)
at com.sun.javafx.application.PlatformImpl$6$1.run(PlatformImpl.java:301)
at com.sun.javafx.application.PlatformImpl$6$1.run(PlatformImpl.java:298)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl$6.run(PlatformImpl.java:298)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
Caused by: java.lang.ClassNotFoundException: org.sqlite.NativeDB
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 30 more
Exception running application phantom.Main
【问题讨论】：
-
文件夹可能是drwxr-xr-x，但是您以什么用户身份运行此代码？由于文件夹是 755，因此只有 OWNER 对其具有写权限。如果您以其他用户身份运行，则您没有写入权限。
-
我正在使用 Netbeans 构建和执行文件，我假设它使用当前用户构建项目，运行项目，并创建文件夹...
-
暂时试试
chmod 777 "~/Library/App...../Phantom"看看是否有帮助。 -
因此，无论您以何种用户身份登录并运行 netbeans，都必须是该文件夹的所有者。
-
@MarkSetchell 这样做之后，我仍然无法创建数据库 db 文件...
标签： java macos sqlite permissions file-permissions