package com.hikvision.ga;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

/**
 * 工具类
 *
 * @author
 * @create 2019-01-11 17:06
 **/
public class  Tools {

    /**
     * 将图片写到 硬盘指定目录下
     *
     * @param in
     * @param dirPath
     * @param filePath
     */
    public static void savePicToDisk(InputStream in, String dirPath,
                                     String filePath) {

        try {
            File dir = new File(dirPath);
            if (dir == null || !dir.exists()) {
                dir.mkdirs();
            }

            //文件真实路径
            String realPath = dirPath.concat(filePath);
            File file = new File(realPath);
            if (file == null || !file.exists()) {
                file.createNewFile();
            }

            FileOutputStream fos = new FileOutputStream(file);
            byte[] buf = new byte[1024];
            int len = 0;
            while ((len = in.read(buf)) != -1) {
                fos.write(buf, 0, len);
            }
            fos.flush();
            fos.close();

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                in.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}