damiao/eladmin-system/src/main/java/me/zhengjie/appapi/util/SysUtil.java

package me.zhengjie.appapi.util;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sun.misc.BASE64Encoder;

import java.io.*;
import java.text.SimpleDateFormat;
import java.util.*;

public class SysUtil {

	private static final Logger log = LoggerFactory.getLogger(SysUtil.class);

	/**
	 * 生成8位随机字符串
	 *
	 * @return
	 */
	public static String getRandomStr() {
		String[] chars = new String[] { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F",
				"G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" };

		StringBuffer shortBuffer = new StringBuffer();
		String uuid = UUID.randomUUID().toString().replace("-", "");
		for (int j = 0; j < 8; j++) {
			String str = uuid.substring(j * 4, j * 4 + 4);
			int par = Integer.parseInt(str, 16);
			shortBuffer.append(chars[par % 36]);
		}
		return shortBuffer.toString();
	}

	/**
	 * 图片转base64字符串
	 *
	 * @param imgFile 图片路径
	 * @return base64字符串格式的图片
	 */
	public static String imageToBase64Str(String imgFile) {
		InputStream inputStream = null;
		byte[] data = null;
		try {
			inputStream = new FileInputStream(imgFile);
			data = new byte[inputStream.available()]; // 根据文件流字节大小初始化data字节数组大小
			inputStream.read(data); // 将流读入data
			inputStream.close(); // 关闭流
		} catch (IOException e) {
			e.printStackTrace();
		}
		// 将图片数组加密
		BASE64Encoder encoder = new BASE64Encoder();
		return encoder.encode(data);
	}

	/**
	 * 生成16位唯一性的订单号
	 *
	 * @return
	 */
	public static String getUUID() {
		// 随机生成一位整数
		int random = (int) (Math.random() * 9 + 1);
		String valueOf = String.valueOf(random);
		// 生成uuid的hashCode值
		int hashCode = UUID.randomUUID().toString().hashCode();
		// 可能为负数
		if (hashCode < 0) {
			hashCode = -hashCode;
		}
		String value = valueOf + String.format("%015d", hashCode);
		return value;
	}

	/**
	 * 视频文件转base64
	 *
	 * @param path 视频文件路径带文件名
	 * @return base64
	 */
	public static String videoToBase64(String path) {
		File videofilePath = new File(path);
		long size = videofilePath.length();
		byte[] imageByte = new byte[(int) size];
		FileInputStream fs = null;
		BufferedInputStream bis = null;
		try {
			fs = new FileInputStream(videofilePath);
			bis = new BufferedInputStream(fs);
			bis.read(imageByte);
		} catch (FileNotFoundException e) {
			log.info("文件" + videofilePath.getName() + "不能被找到：{}", e.getMessage());
		} catch (IOException e) {
			log.info("byte转换BASE64出错：" + e.getMessage());
		} finally {
			if (bis != null) {
				try {
					bis.close();
				} catch (IOException e) {
					log.info("关闭输入流出错：" + e.getMessage());
				}
			}
			if (fs != null) {
				try {
					fs.close();
				} catch (IOException e) {
					log.info("关闭输入流出错：" + e.getMessage());
				}
			}
		}
		return (new BASE64Encoder()).encode(imageByte);
	}

	/**
	 * 字符串写入文件
	 *
	 * @param str
	 * @param path
	 */
	public static void writeToFile(String str, String path) {
		FileWriter writer;
		try {
			writer = new FileWriter(path);
			writer.write(str);
			writer.flush();
			writer.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	/**
	 * 获取十分钟后的时间戳
	 *
	 * @return
	 */
	public static long tenMinAfter() {
		Date date = new Date();
		System.out.println(date.getTime());
		date.setTime(date.getTime() + 10 * 60 * 1000);
		long time = date.getTime();
		return time;
	}

	/**
	 * 将文件转换成byte数组
	 *
	 * @param tradeFile
	 * @return
	 */
	public static byte[] File2byte(File tradeFile) {
		byte[] buffer = null;
		try {
			FileInputStream fis = new FileInputStream(tradeFile);
			ByteArrayOutputStream bos = new ByteArrayOutputStream();
			byte[] b = new byte[1024];
			int n;
			while ((n = fis.read(b)) != -1) {
				bos.write(b, 0, n);
			}
			fis.close();
			bos.close();
			buffer = bos.toByteArray();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return buffer;
	}

	/**
	 * 通过文件名获取证件号
	 * 
	 * @param fileName
	 * @return
	 */
	public static String fileNameToIdNo(String fileName) {
		int i = fileName.lastIndexOf("-");
		String substring = fileName.substring(i + 1, i + 18 + 1);
		return substring;
	}

	/**
	 * 将本地文件转Base64
	 *
	 * 转Base64
	 * 
	 * @param videofilePath
	 * @return
	 */
	public static String fileToBase64(File videofilePath) {
		long size = videofilePath.length();
		byte[] imageByte = new byte[(int) size];
		FileInputStream fs = null;
		BufferedInputStream bis = null;
		try {
			fs = new FileInputStream(videofilePath);
			bis = new BufferedInputStream(fs);
			bis.read(imageByte);
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if (bis != null) {
				try {
					bis.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			if (fs != null) {
				try {
					fs.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
		return Base64.getEncoder().encodeToString(imageByte);
	}

	/**
	 * 证件号解析性别年龄
	 * 
	 * @param CardCode
	 * @return
	 * @throws Exception
	 */
	public static Map<String, String> getCarInfo(String CardCode) {
		Map<String, String> map = new HashMap<String, String>();
		try {
			String year = CardCode.substring(6).substring(0, 4);// 得到年份
			String yue = CardCode.substring(10).substring(0, 2);// 得到月份
			// String day=CardCode.substring(12).substring(0,2);//得到日
			String sex;
			if (Integer.parseInt(CardCode.substring(16).substring(0, 1)) % 2 == 0) {// 判断性别
				sex = "女";
			} else {
				sex = "男";
			}
			Date date = new Date();// 得到当前的系统时间
			SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
			String fyear = format.format(date).substring(0, 4);// 当前年份
			String fyue = format.format(date).substring(5, 7);// 月份
			// String fday=format.format(date).substring(8,10);
			int age = 0;
			if (Integer.parseInt(yue) <= Integer.parseInt(fyue)) { // 当前月份大于用户出身的月份表示已过生
				age = Integer.parseInt(fyear) - Integer.parseInt(year) + 1;
			} else {// 当前用户还没过生
				age = Integer.parseInt(fyear) - Integer.parseInt(year);
			}
			map.put("sex", sex);
			map.put("age", String.valueOf(age));
		} catch (Exception e) {
			map.put("sex", "男");
			map.put("age", "22");
		}

		return map;
	}
	/**
	 * 判断操作系统是否为Windows
	 * @return
	 */
	public static boolean isWindows() {
		String osName = System.getProperty("os.name");
		if (osName.toLowerCase().contains("windows")) {
			return true;
		}
		return false;
	}

	public static void main(String[] args) {
		isWindows();
	}

}