package com.hx.util.code;
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import com.hx.util.DateUtil;
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import com.hx.util.StringUtils;
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import org.apache.commons.lang3.RandomStringUtils;
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import java.util.Date;
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import java.util.Random;
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/**生成编号工具
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*/
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public class NumberTool {
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/**大小写字母*/
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private static final String LETTER_ARR = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
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/**大小写字母和数字*/
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private static final String LETTER_NUMBER = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
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/**小写字母*/
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private static final String LETTER_SMALL = "abcdefghijklmnopqrstuvwxyz";
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/**大写字母*/
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private static final String LETTER_BIG = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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/**随机获大写字母组合
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* @param lengrhCount 长度
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* @return
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*/
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public static String letterBig(long lengrhCount){
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char[] c = LETTER_BIG.toCharArray();
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Random random = new Random();
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StringBuilder data = new StringBuilder();
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for( int i = 0; i < lengrhCount; i ++) {
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data.append(c[random.nextInt(c.length)]);
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}
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return data.toString();
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}
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/**随机获小写字母组合
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* @param lengrhCount 长度
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* @return
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*/
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public static String letterSmall(long lengrhCount){
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char[] c = LETTER_SMALL.toCharArray();
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Random random = new Random();
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StringBuilder data = new StringBuilder();
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for( int i = 0; i < lengrhCount; i ++) {
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data.append(c[random.nextInt(c.length)]);
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}
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return data.toString();
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}
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/**随机获取大小写字母和数字组合
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* @param lengrhCount 长度
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* @return
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*/
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public static String letterNumber(long lengrhCount){
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char[] c = LETTER_NUMBER.toCharArray();
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Random random = new Random();
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StringBuilder data = new StringBuilder();
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for( int i = 0; i < lengrhCount; i ++) {
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data.append(c[random.nextInt(c.length)]);
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}
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return data.toString();
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}
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/**随机获取大小写字母组合
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* @param lengrhCount 长度
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* @return
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*/
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public static String letterRandom(long lengrhCount){
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char[] c = LETTER_ARR.toCharArray();
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Random random = new Random();
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StringBuilder data = new StringBuilder();
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for( int i = 0; i < lengrhCount; i ++) {
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data.append(c[random.nextInt(c.length)]);
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}
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return data.toString();
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}
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/**随机生成字符串（0-9）
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* @param lengthCount 长度
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* @return
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*/
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public static String generateCardNo(long lengthCount) {
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Random r=new Random();
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//定义变长字符串
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StringBuilder str = new StringBuilder();
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for(int i=0;i<lengthCount;i++){
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str.append(r.nextInt(10));
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}
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return str.toString();
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}
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}
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