[add]新增文件MD5

common/src/main/java/com/atmob/common/crypto/CryptoUtils.java

@@ -3,6 +3,10 @@ package com.atmob.common.crypto;
 import android.util.Base64;
 import android.util.Log;
 
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
 import java.io.InputStream;
 import java.io.UnsupportedEncodingException;
 import java.security.MessageDigest;
@@ -480,15 +484,34 @@ public final class CryptoUtils {
 
         public static String md5(InputStream is) {
             try {
-                return md5(IOUtils.readBytes(is));
+                return new String(encodeHex(getMd5(is)));
             } catch (Exception e) {
-                Log.w("exception", e);
                 return "";
             } finally {
                 IOUtils.closeQuietly(is);
             }
         }
 
+        public static String md5(File file) {
+            try {
+                return md5(new FileInputStream(file));
+            } catch (FileNotFoundException ignore) {
+
+            }
+            return "";
+        }
+
+        private static byte[] getMd5(InputStream in) throws NoSuchAlgorithmException, IOException {
+            byte[] buffer = new byte[1024];
+            int len;
+            MessageDigest digest = MessageDigest.getInstance("MD5");
+            while ((len = in.read(buffer, 0, 1024)) != -1) {
+                digest.update(buffer, 0, len);
+            }
+
+            return digest.digest();
+        }
+
         public static byte[] md5Bytes(byte[] data) {
             return getDigest(MD5).digest(data);
         }