如何在java中复制文件 [英] How to copy file in java

问题描述

我试图在java中复制文件并将其移动到新文件夹。这是我一直在使用的代码，但我总是在指定的目录中收到此错误（访问被拒绝）。有没有办法可以解决这个或更好的方法来复制文件？谢谢

Im trying to copy a file in java and move it to a new folder. This is the code i HAve been using but I always get this error "(Access is denied) in the specified directory". Is there a way i can fix this or a better way to copy the files? thanks

try{
          File f1 = new File(fpath);
          File f2 = new File("C:/users/peter/documents/foldertest2/hats");
          InputStream in = new FileInputStream(f1);

          //For Append the file.
          //OutputStream out = new FileOutputStream(f2,true);

          //For Overwrite the file.
          OutputStream out = new FileOutputStream(f2);

          byte[] buf = new byte[1024];
          int len;
          while ((len = in.read(buf)) > 0){
            out.write(buf, 0, len);
          }
          in.close();
          out.close();
          System.out.println("File copied.");
        }
        catch(FileNotFoundException ex){
          System.out.println(ex.getMessage() + " in the specified directory.");
          System.exit(0);
        }
        catch(IOException e){
          System.out.println(e.getMessage());      
        }

更新：
我检查了文件夹权限，它们都是开放的对于所有用户和我的

UPDATE: I checked the folder permissions and they are all open for all users and mine

推荐答案

编辑乱搞，第二次尝试：

Edit ups messed up, second try:

您必须为FileOutputStream提供有效的文件名，只需将文件名附加到目标路径 C：/ users / peter / documents / foldertest2 / hats / hat3 只有文件夹名称，它会尝试访问该文件夹，就好像它是一个文件并失败。

You have to give the FileOutputStream a valid file name, just append the name of your file to the target path C:/users/peter/documents/foldertest2/hats/hat3 with only the folder name it will try to access the folder as if it was a file and fail.

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