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package com.hthl.xxtd;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.security.MessageDigest;
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import org.apache.commons.codec.binary.Hex;
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import org.apache.commons.codec.digest.DigestUtils;
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/**
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*MD5计算工具 xuxile 2017-09-13
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*/
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public
class Md5CaculateUtil {
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/**
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* 获取一个文件的md5值(可处理大文件)
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* @return md5 value
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*/
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public static String getMD5(File file) {
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FileInputStream fileInputStream =
null;
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try {
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MessageDigest MD5 = MessageDigest.getInstance(
“MD5”);
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fileInputStream =
new FileInputStream(file);
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byte[] buffer =
new
byte[
8192];
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int length;
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while ((length = fileInputStream.read(buffer)) != -
1) {
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MD5.update(buffer,
0, length);
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}
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return
new String(Hex.encodeHex(MD5.digest()));
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}
catch (Exception e) {
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e.printStackTrace();
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return
null;
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}
finally {
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try {
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if (fileInputStream !=
null){
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fileInputStream.close();
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}
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}
catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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/**
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* 求一个字符串的md5值
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* @param target 字符串
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* @return md5 value
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*/
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public static String MD5(String target) {
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return DigestUtils.md5Hex(target);
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}
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public static void main(String[] args) {
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long beginTime = System.currentTimeMillis();
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File file =
new File(
“D:/1/pdi-ce-7.0.0.0-24.zip”);
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String md5 = getMD5(file);
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long endTime = System.currentTimeMillis();
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System.out.println(
“MD5:” + md5 +
“\n 耗时:” + ((endTime - beginTime) /
1000) +
“s”);
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}
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}
转自:https://blog.csdn.net/xuxile/article/details/77963894
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package com.hthl.xxtd;
-
-
import java.io.File;
-
import java.io.FileInputStream;
-
import java.io.IOException;
-
import java.security.MessageDigest;
-
-
import org.apache.commons.codec.binary.Hex;
-
import org.apache.commons.codec.digest.DigestUtils;
-
-
/**
-
*MD5计算工具 xuxile 2017-09-13
-
*/
-
public
class Md5CaculateUtil {
-
-
/**
-
* 获取一个文件的md5值(可处理大文件)
-
* @return md5 value
-
*/
-
public static String getMD5(File file) {
-
FileInputStream fileInputStream =
null;
-
try {
-
MessageDigest MD5 = MessageDigest.getInstance(
“MD5”);
-
fileInputStream =
new FileInputStream(file);
-
byte[] buffer =
new
byte[
8192];
-
int length;
-
while ((length = fileInputStream.read(buffer)) != -
1) {
-
MD5.update(buffer,
0, length);
-
}
-
return
new String(Hex.encodeHex(MD5.digest()));
-
}
catch (Exception e) {
-
e.printStackTrace();
-
return
null;
-
}
finally {
-
try {
-
if (fileInputStream !=
null){
-
fileInputStream.close();
-
}
-
}
catch (IOException e) {
-
e.printStackTrace();
-
}
-
}
-
}
-
-
/**
-
* 求一个字符串的md5值
-
* @param target 字符串
-
* @return md5 value
-
*/
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public static String MD5(String target) {
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return DigestUtils.md5Hex(target);
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}
-
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public static void main(String[] args) {
-
long beginTime = System.currentTimeMillis();
-
File file =
new File(
“D:/1/pdi-ce-7.0.0.0-24.zip”);
-
String md5 = getMD5(file);
-
long endTime = System.currentTimeMillis();
-
System.out.println(
“MD5:” + md5 +
“\n 耗时:” + ((endTime - beginTime) /
1000) +
“s”);
-
}
-
}
转自:https://blog.csdn.net/xuxile/article/details/77963894