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app/src/main/java/com/gh/common/util/MD5Utils.java

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