/*******************************************************************************
 * Copyright 2011-2013 Sergey Tarasevich
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package com.mcxiaoke.commons.cache.naming;

import com.mcxiaoke.commons.utils.CryptoUtils;

import java.math.BigInteger;

public class MD5FileNameGenerator implements FileNameGenerator {

    private static final int RADIX = 10 + 26; // 10 digits + 26 letters

    @Override
    public String generate(String imageUri) {
        byte[] md5 = hash(imageUri.getBytes());
        BigInteger bi = new BigInteger(md5).abs();
        return bi.toString(RADIX);
    }

    private byte[] hash(byte[] data) {
        return CryptoUtils.HASH.md5Bytes(data);
    }
}

/*******************************************************************************
 * Copyright 2011-2013 Sergey Tarasevich
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package com.mcxiaoke.commons.cache.naming;

import com.mcxiaoke.commons.utils.CryptoUtils;

import java.math.BigInteger;

public class Md5FileNameGenerator implements FileNameGenerator {

    private static final int RADIX = 10 + 26; // 10 digits + 26 letters

    @Override
    public String generate(String imageUri) {
        byte[] md5 = hash(imageUri.getBytes());
        BigInteger bi = new BigInteger(md5).abs();
        return bi.toString(RADIX);
    }

    private byte[] hash(byte[] data) {
        return CryptoUtils.HASH.md5Bytes(data);
    }
}

fix class name