com.zxy.commons.codec.utils.MD5Utils.java Source code

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Here is the source code for com.zxy.commons.codec.utils.MD5Utils.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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.zxy.commons.codec.utils;

import org.apache.commons.lang.StringUtils;

import com.google.common.hash.Hashing;

/**
 * MD5
 * 
 * <p>
 * <a href="MD5Utils.java"><i>View Source</i></a>
 * 
 * @author zhaoxunyong@qq.com
 * @version 1.0
 * @since 1.0
 */
public final class MD5Utils {

    private MD5Utils() {
    }

    /**
     * 16?md5??8-24?
     * 
     * @param source source
     * @return 16?md5?
     */
    public static String encode16(String source) {
        if (StringUtils.isBlank(source)) {
            return "";
        }
        return encode32(source).substring(8, 24);
    }

    /**
     * 32?md5?
     * 
     * @param source source
     * @return 32?md5?
    */
    public static String encode32(String source) {
        if (StringUtils.isBlank(source)) {
            return source;
        }
        return Hashing.md5().hashBytes(source.getBytes()).toString();
    }

    /**
     * long16?md5
     * 
     * @param source source
     * @return 16?md5?
    */
    public static String encode16Long(Long source) {
        return encode16(source == null ? null : source.toString());
    }
}