/** 
 * Copyright 2018-2028 Akaxin Group
 *
 * 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.windchat.im.business.utils;

/**
 * byte数组与字符串之间转换
 */
public class HexUtils {

	public static String bytesToHexString(byte[] b) {
		StringBuffer returnValue = new StringBuffer();
		for (int i = 0; i < b.length; i++) {
			String hex = Integer.toHexString(b[i] & 0xFF);
			if (hex.length() == 1) {
				hex = '0' + hex;
			}
			returnValue.append(hex.toUpperCase() + " ");
		}

		return returnValue.toString();
	}

	public static void main(String[] args) {
		String test = "你好，我是中国人";

		System.out.println(bytesToHexString(test.getBytes()));

	}
}