79 lines
2.3 KiB
Java
79 lines
2.3 KiB
Java
package com.gh.common.util;
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import java.io.ByteArrayInputStream;
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import java.math.BigInteger;
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import java.security.MessageDigest;
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public class MD5Utils {
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public static String getUpdateMD5(String url, String content) {
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if (url == null && content == null) {
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return null;
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}
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MessageDigest digest;
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ByteArrayInputStream bais;
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byte buffer[] = new byte[1024];
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int len;
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try {
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digest = MessageDigest.getInstance("MD5");
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bais = new ByteArrayInputStream((url + content).getBytes());
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while ((len = bais.read(buffer, 0, 1024)) != -1) {
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digest.update(buffer, 0, len);
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}
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bais.close();
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} catch (Exception e) {
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e.printStackTrace();
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return null;
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}
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BigInteger bigInt = new BigInteger(1, digest.digest());
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return bigInt.toString(16);
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}
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public static String getUrlMD5(String url) {
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if (url == null) {
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return null;
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}
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MessageDigest digest;
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ByteArrayInputStream bais;
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byte buffer[] = new byte[1024];
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int len;
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try {
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digest = MessageDigest.getInstance("MD5");
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bais = new ByteArrayInputStream(url.getBytes());
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while ((len = bais.read(buffer, 0, 1024)) != -1) {
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digest.update(buffer, 0, len);
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}
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bais.close();
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} catch (Exception e) {
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e.printStackTrace();
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return null;
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}
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BigInteger bigInt = new BigInteger(1, digest.digest());
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return bigInt.toString(16);
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}
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public static String getContentMD5(String content) {
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if (content == null) {
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return null;
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}
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MessageDigest digest;
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ByteArrayInputStream bais;
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byte buffer[] = new byte[1024];
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int len;
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try {
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digest = MessageDigest.getInstance("MD5");
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bais = new ByteArrayInputStream(content.getBytes());
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while ((len = bais.read(buffer, 0, 1024)) != -1) {
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digest.update(buffer, 0, len);
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}
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bais.close();
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} catch (Exception e) {
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e.printStackTrace();
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return null;
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}
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BigInteger bigInt = new BigInteger(1, digest.digest());
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return bigInt.toString(16);
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}
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}
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