com.fasc.open.api.utils.crypt.HashFile Maven / Gradle / Ivy
/**
* 包名：com.yq365.utils.crypt
* 文件名：com.yq365.utils.crypt
* 创建者：zyb
* 创建日：2015-3-9
*
* CopyRight 2015 ShenZhen Fabigbig Technology Co.Ltd All Rights Reserved
*/
package com.fasc.open.api.utils.crypt;
import com.fasc.open.api.exception.ApiException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.MessageDigest;
/**
* @author Fadada
* 2021/9/8 16:09:38
*/
public class HashFile {
private static Logger log = LoggerFactory.getLogger(HashFile.class);
private static char[] hexChar = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
private HashFile() {
}
/**
* @param filename 文件名称
* @return 文件名称md值
* @throws ApiException 异常
*/
public static String getFileMd5(String filename) throws ApiException {
FileInputStream fis = null;
try {
fis = new FileInputStream(filename);
return getHash(fis, "MD5");
} catch (Exception e) {
log.error("文件名MD5失败：{}", e.getMessage(), e);
throw new ApiException("文件名MD5失败");
} finally {
if(fis != null) {
try {
fis.close();
} catch (IOException e) {
log.error("文件流关闭异常 {}", e.getMessage(), e);
}
}
}
}
/**
* @param file 对象
* @return 文件名称md值
* @throws ApiException 异常
*/
public static String getFileMd5(File file) throws ApiException {
FileInputStream fis = null;
try {
fis = new FileInputStream(file);
return getHash(fis, "MD5");
} catch (Exception e) {
log.error("文件MD5失败：{}", e.getMessage(), e);
throw new ApiException("文件MD5失败");
} finally {
if(fis != null) {
try {
fis.close();
} catch (IOException e) {
log.error("文件流关闭异常 {}", e.getMessage(), e);
}
}
}
}
public static String getFileMd5(FileInputStream fis) throws ApiException {
return getHash(fis, "MD5");
}
public static String getFileMd5(byte[] dataBytes) throws ApiException {
return getHash(dataBytes, "MD5");
}
public static String getFileSha256(String filename) throws ApiException {
FileInputStream fis = null;
try {
fis = new FileInputStream(filename);
return getHash(fis, "SHA-256");
} catch (Exception e) {
log.error("文件名称SHA256失败：{}", e.getMessage(), e);
throw new ApiException("文件名称SHA256失败");
} finally {
if(fis != null) {
try {
fis.close();
} catch (IOException e) {
log.error("文件流关闭异常 {}", e.getMessage(), e);
}
}
}
}
public static String getFileSha256(File file) throws ApiException {
FileInputStream fis = null;
try {
fis = new FileInputStream(file);
return getHash(fis, "SHA-256");
} catch (Exception e) {
log.error("文件SHA256失败：{}", e.getMessage(), e);
throw new ApiException("文件SHA256失败");
} finally {
if(fis != null) {
try {
fis.close();
} catch (IOException e) {
log.error("文件流关闭异常 {}", e.getMessage(), e);
}
}
}
}
public static String getFileSha256(FileInputStream fis) throws ApiException {
return getHash(fis, "SHA-256");
}
public static String getFileSha256(byte[] dataBytes) throws ApiException {
return getHash(dataBytes, "SHA-256");
}
private static String getHash(InputStream inputStream, String hashType) throws ApiException {
MessageDigest messageDigest = null;
try {
byte[] buffer = new byte[1024];
messageDigest = MessageDigest.getInstance(hashType);
int numRead;
while ((numRead = inputStream.read(buffer)) > 0) {
messageDigest.update(buffer, 0, numRead);
}
return toHexString(messageDigest.digest());
} catch (Exception e) {
log.error("输入流获取Hash值失败：{}", e.getMessage(), e);
throw new ApiException("输入流获取Hash值失败");
}
}
private static String getHash(byte[] dataBytes, String hashType) throws ApiException {
MessageDigest messageDigest = null;
try {
messageDigest = MessageDigest.getInstance(hashType);
return toHexString(messageDigest.digest(dataBytes));
} catch (Exception e) {
log.error("字节数据获取Hash值失败：{}", e.getMessage(), e);
throw new ApiException("字节数据获取Hash值失败");
}
}
private static String toHexString(byte[] b) {
StringBuilder sb = new StringBuilder(b.length * 2);
for (int i = 0; i < b.length; i++) {
sb.append(hexChar[((b[i] & 0xF0) >>> 4)]);
sb.append(hexChar[(b[i] & 0xF)]);
}
return sb.toString();
}
}