图片迁移Java

将指定文件夹下所有的文件全部复制到另一个文件夹下

• 递归
• 输入输出字节流

public static void fileMv(String tempPath, String allPath) {
        if(!new File(tempPath).exists()){
            return ;
        }
        File all = new File(allPath);
        if(!all.exists()){
            all.mkdir();
        }
        File temp = new File(tempPath);
        File[] files = temp.listFiles();
        if (files != null) {
            for (File file : files) {
                if (file.isDirectory()) {
                    fileMv(tempPath+"/"+file.getName(), allPath + "/" + file.getName());
                } else {
                    try {
                        FileInputStream inputStream = new FileInputStream(file);
                        FileOutputStream outputStream = new FileOutputStream(allPath+"/"+file.getName());
                        byte[] data = new byte[1024];
                        int ii = 0;
                        while ((ii = inputStream.read(data)) > 0) {
                            outputStream.write(data);
                        }
                        inputStream.close();
                        outputStream.close();
                        // 删除文件
                        log.info("删除文件"+file.getName());
                        //file.delete(); 
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }
        }
    }
    ```