java.io.File的renameTo方法移动文件失败的解决方案

import java.io.File;
/**
* 文件移动方法测试
*/
public class FileTest {
  public static void main(String[] args) {
     String filePath="/tmp/test.txt";
     File file = new File(filePath);
     boolean b = file.renameTo(new File("/run/test.txt"));
     System.out.println(b);
 }
}

javac FileTest.java
java FileTest

import org.apache.commons.io.FileUtils;
import java.io.File;
import java.io.IOException;
/**
* 文件移动方法测试
*/
public class FileTest {
  public static void main(String[] args) {
     String filePath="/tmp/test.txt";
     File file = new File(filePath);
     boolean b = file.renameTo(new File("/run/test.txt"));
     System.out.println(b);
     //使用apache的FileUtils工具
     try {
         FileUtils.moveFile(file,new File("/run/test.txt"));
         System.out.println("success");
     } catch (IOException e) {
         e.printStackTrace();
     }
 }
}

javac -cp /root/jar/commons-io-2.4.jar FileTest.java
java -cp /root/jar/commons-io-2.4.jar: FileTest

//先使用renameTo方法进行移动
boolean rename = srcFile.renameTo(destFile);
if (!rename) {
 //renameTo移动失败，就复制文件，然后删除原文件
 copyFile( srcFile, destFile );
 if (!srcFile.delete()) {
 FileUtils.deleteQuietly(destFile);
 throw new IOException("Failed to delete original file '" + srcFile +
  "' after copy to '" + destFile + "'");
 }
}