com.wudaosoft.commons.utils.Identities Maven / Gradle / Ivy
/**
* Copyright 2009-2018 Wudao Software Studio(wudaosoft.com)
*
* 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.wudaosoft.commons.utils;
import java.security.SecureRandom;
import java.util.UUID;
/**
* 封装各种生成唯一性ID算法的工具类.
*
* @author Changsoul Wu
*
*/
public class Identities {
private static SecureRandom random = new SecureRandom();
/**
* 封装JDK自带的UUID, 通过Random数字生成, 中间有-分割.
*/
public static String uuid() {
return UUID.randomUUID().toString();
}
/**
* 封装JDK自带的UUID, 通过Random数字生成, 中间无-分割.
*/
public static String uuid2() {
return UUID.randomUUID().toString().replaceAll("-", "");
}
/**
* 使用SecureRandom随机生成Long.
*/
public static long randomLong() {
return Math.abs(random.nextLong());
}
/**
* 基于Base62编码的SecureRandom随机生成bytes.
*/
public static String randomBase62(int length) {
byte[] randomBytes = new byte[length];
random.nextBytes(randomBytes);
return Encodes.encodeBase62(randomBytes);
}
}