这是一个简单的类来显示4个案例。 抱歉我的英语(很糟糕)
public static void main(String[] args) throws IOException {
//TODO De temporal a archivo en directorio
//TODO from file in temporary folder to file in common folder.
File fromTemp_Dir = File.createTempFile("Temp_Dir_FROM", ".temp");
File toTemp_Dir = new File ("Temp_Dir");
BufferedWriter bufferWriterTemp_DirFROM = new BufferedWriter(new FileWriter(fromTemp_Dir));
bufferWriterTemp_DirFROM.write("Temp_Dir_FROM");
bufferWriterTemp_DirFROM.close();
BufferedWriter bufferWriterTemp_DirTO = new BufferedWriter(new FileWriter(toTemp_Dir));
bufferWriterTemp_DirTO.write("Temp_Dir_TO");
bufferWriterTemp_DirTO.close();
System.out.println("fromTemp_Dir exist? "+fromTemp_Dir.exists());
System.out.println("toTemp_Dir exist? "+toTemp_Dir.exists());
toTemp_Dir.delete();
if (!fromTemp_Dir.renameTo(toTemp_Dir)){
System.out.println("rename fail 'De temporal a archivo en directorio'");
}else {
System.out.println("Rename successful 'De temporal a archivo en directorio'");
}
//TODO De archivo a temporal
//TODO from file in common folder to file in temporary folder.
File fromDir_Temp = new File ("Dir_FROM");
File toDir_Temp = File.createTempFile("Dir_Temp_TO", ".temp");
BufferedWriter bufferWriterDir_TempFROM = new BufferedWriter(new FileWriter(fromDir_Temp));
bufferWriterDir_TempFROM.write("Dir_Temp_FROM");
bufferWriterDir_TempFROM.close();
BufferedWriter bufferWriterDir_TempTO = new BufferedWriter(new FileWriter(toDir_Temp));
bufferWriterDir_TempTO.write("Dir_Temp_TO");
bufferWriterDir_TempTO.close();
toDir_Temp.delete();
if (!fromDir_Temp.renameTo(toDir_Temp)){
System.out.println("rename fail 'De archivo en directorio a temporal'");
} else{
System.out.println("rename successful 'De archivo en directorio a temporal'");
}
//TODO De temporal a temporal
//TODO from temporary folder to temporary folder
File fromTemp = File.createTempFile("archivoTempFROM_", ".temp");
File toTemp = File.createTempFile("archivoTempTO_", ".temp");
BufferedWriter bufferWriterFROMTemp = new BufferedWriter(new FileWriter(fromTemp));
bufferWriterFROMTemp.write("archivoTempFROM");
bufferWriterFROMTemp.close();
BufferedWriter bufferWriterTOTemp = new BufferedWriter(new FileWriter(toTemp));
bufferWriterTOTemp.write("archivoTempTO");
bufferWriterTOTemp.close();
toTemp.delete();
if (!fromTemp.renameTo(toTemp)){
System.out.println("rename fail 'De temporal a temporal'");
}else {
System.out.println("Rename successful 'De temporal a temporal'");
}
//TODO De archivo a archivo en directorio
//TODO from file in common directory to file in common directory
File fromDir = new File("archivoDirFROM");
File toDir = new File("archivoDirTO");
BufferedWriter bufferWriterFROMDir = new BufferedWriter(new FileWriter(fromDir));
bufferWriterFROMDir.write("archivoDirFROM");
bufferWriterFROMDir.close();
BufferedWriter bufferWriterTODir = new BufferedWriter(new FileWriter(toDir));
bufferWriterTODir.write("archivoDirTO");
bufferWriterTODir.close();
toDir.delete();
if (!fromDir.renameTo(toDir)){
System.out.println("rename fail 'De archivo a archivo en directorio'");
}else {
System.out.println("Rename successful 'De archivo a archivo en directorio'");
}
}
在我的控制台中显示
fromTemp_Dir存在吗?真正
toTemp_Dir存在?真正
重命名失败'De temporal a archivo en directorio'
重命名失败'De archivo en directorio a temporal'
重命名成功'De temporal a temporal'
重命名成功'De archivo a archivo en directorio'
这个类可以在某些PC上运行,但在其他PC上运行(在7台PC中测试,5个工作,2个不工作),所有都安装了ubuntu。
据说这是一个权限问题,但我已将PC设置为管理员和root。
我尝试使用gksu和sudo,但是没有用。
任何解决方案?
感谢。
答案 0 :(得分:2)
阅读renameTo doc:
Whether or not this method can move a file from one filesystem to another is platform-dependent. The return value should always be checked to make sure that the rename operation was successful
我有一个像你这样的问题,但我不得不处理很多文件,我需要确保事情发生。解决方案是使用操作系统来做,调用 调用Runtime.getRuntime()。EXEC(命令)
在命令内部我可以做一个“mv”file1 file2 听起来很傻,但它完成了这项工作。可能经常这样做是相当昂贵的,但它没有任何大问题。
干杯, 尤金。
答案 1 :(得分:1)
更改<{p>的renameTo()
方法
Files.move(new File(newFilePath), new File(oldFilePath));
这完美无缺。