import java.io.File;  
import java.io.FileInputStream;  
import java.io.FileOutputStream;  
      
public class Test {  
      private static int a = 5;  
      
      public static void main(String[] args) {  
        //需要复制的目标文件或目标文件夹  
        String pathname = "C:/Users/Desktop/git_project";  
        File file = new File(pathname);  
        //复制到的位置  
        String topathname = "C:/Users/Desktop/movie";  
        File toFile = new File(topathname);  
        try {  
            copy(file, toFile);  
        } catch (Exception e) {  
                // TODO Auto-generated catch block  
                e.printStackTrace();  
        }  
      }  
      
      public static void copy(File file, File toFile) throws Exception {  
          byte[] b = new byte[1024];  
          int a;  
          FileInputStream fis;  
          FileOutputStream fos;  
          if (file.isDirectory()) {  
              String filepath = file.getAbsolutePath();  
              filepath=filepath.replaceAll("\\\\", "/");  
              String toFilepath = toFile.getAbsolutePath();  
              toFilepath=toFilepath.replaceAll("\\\\", "/");  
              int lastIndexOf = filepath.lastIndexOf("/");  
              toFilepath = toFilepath + filepath.substring(lastIndexOf ,filepath.length());  
              File copy=new File(toFilepath);  
                //复制文件夹  
              if (!copy.exists()) {  
                  copy.mkdir();  
              }  
                //遍历文件夹  
              for (File f : file.listFiles()) {  
                  copy(f, copy);  
              }  
           } else {  
                if (toFile.isDirectory()) {  
                    String filepath = file.getAbsolutePath();  
                    filepath=filepath.replaceAll("\\\\", "/");  
                    String toFilepath = toFile.getAbsolutePath();  
                    toFilepath=toFilepath.replaceAll("\\\\", "/");  
                    int lastIndexOf = filepath.lastIndexOf("/");  
                    toFilepath = toFilepath + filepath.substring(lastIndexOf ,filepath.length());  
                      
                    //写文件  
                    File newFile = new File(toFilepath);  
                    fis = new FileInputStream(file);  
                    fos = new FileOutputStream(newFile);  
                    while ((a = fis.read(b)) != -1) {  
                        fos.write(b, 0, a);  
                    }  
                } else {  
                    //写文件  
                    fis = new FileInputStream(file);  
                    fos = new FileOutputStream(toFile);  
                    while ((a = fis.read(b)) != -1) {  
                        fos.write(b, 0, a);  
                    }  
                }  
      
          }  
      }  
      
}