JAVA IO - 临时文件和folder拷贝

逃离我推掉我的手 2022-01-14 13:19 233阅读 0赞

[2019独角兽企业重金招聘Python工程师标准>>> ][2019_Python_] ![hot3.png][]

//create a temp file
        	   File temp = File.createTempFile("temp-file-name", ".tmp"); 
     
        	   System.out.println("Temp file : " + temp.getAbsolutePath());

Working dir

String workingDir = System.getProperty("user.dir");
    	   System.out.println("Current working directory : " + workingDir);

folder copy

public static void copyFolder(File src, File dest)
        	throws IOException{
     
        	if(src.isDirectory()){
     
        		//if directory not exists, create it
        		if(!dest.exists()){
        		   dest.mkdir();
        		   System.out.println("Directory copied from " 
                                  + src + "  to " + dest);
        		}
     
        		//list all the directory contents
        		String files[] = src.list();
     
        		for (String file : files) {
        		   //construct the src and dest file structure
        		   File srcFile = new File(src, file);
        		   File destFile = new File(dest, file);
        		   //recursive copy
        		   copyFolder(srcFile,destFile);
        		}
     
        	}else{
        		//if file, then copy it
        		//Use bytes stream to support all file types
        		InputStream in = new FileInputStream(src);
        	        OutputStream out = new FileOutputStream(dest); 
     
        	        byte[] buffer = new byte[1024];
     
        	        int length;
        	        //copy the file content in bytes 
        	        while ((length = in.read(buffer)) > 0){
        	    	   out.write(buffer, 0, length);
        	        }
     
        	        in.close();
        	        out.close();
        	        System.out.println("File copied from " + src + " to " + dest);
        	}
        }

转载于:https://my.oschina.net/u/138995/blog/192097

[2019_Python_]: https://my.oschina.net/u/2663968/blog/3061697
[hot3.png]: /images/20220114/1dd54f000cbf405cbc94780f68b57ab4.png