博客

1.分割逻辑

public static void main(String[] args) throws Exception {
        // 文件 分割工具类
        String sourceFilesPath = "D:\\test";
        File sourceFile = new File(sourceFilesPath);
        String copyPath = "D:\\test(分割)";
        File[] sourceFileList = sourceFile.listFiles();
        //文件夹数据
        int size = 10000;
        int i = size;
        int fileNum = 0;
        for (File childrenFile : sourceFileList) {
            if (i == size){
                // 超过1000创建新的文件夹
                i = 0;
                fileNum++;
                File file = new File(copyPath + "\\" + fileNum);
                file.mkdir();
            }
            File copyFile = new File(copyPath +"\\" + fileNum + "\\" + childrenFile.getName());
            copyFileUsingStream(childrenFile,copyFile);
            i++;
        }
    }

2.文件拷贝方法

private static void copyFileUsingStream(File source, File dest) throws IOException {
        InputStream is = null;
        OutputStream os = null;
        try {
            is = new FileInputStream(source);
            os = new FileOutputStream(dest);
            byte[] buffer = new byte[1024];
            int length;
            while ((length = is.read(buffer)) > 0) {
                os.write(buffer, 0, length);
            }
        } finally {
            is.close();
            os.close();
        }
    }