package com.dsh.course.util;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Random;
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public class StrUtils {
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/**
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* 把逗号分隔的字符串转换字符串数组
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* Convert comma-separated string to string array.
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*
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* @param str
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* @return
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*/
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public static String[] splitStr2StrArr(String str, String split) {
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if (str != null && !str.equals("")) {
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return str.split(split);
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}
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return null;
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}
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/**
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* 把逗号分隔字符串转换List的Long
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*
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* @param str
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* @return
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*/
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public static List<Long> splitStr2LongArr(String str) {
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String[] strings = splitStr2StrArr(str, ",");
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if (strings == null) return null;
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List<Long> result = new ArrayList<>();
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for (String string : strings) {
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result.add(Long.parseLong(string));
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}
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return result;
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}
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/**
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* 把逗号分隔字符串转换List的Long
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*
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* @param str
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* @return
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*/
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public static List<Long> splitStr2LongArr(String str, String split) {
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String[] strings = splitStr2StrArr(str, split);
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if (strings == null) return null;
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List<Long> result = new ArrayList<>();
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for (String string : strings) {
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result.add(Long.parseLong(string));
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}
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return result;
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}
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public static String getRandomString(int length) {
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String str = "0123456789";
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Random random = new Random();
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StringBuffer sb = new StringBuffer();
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for (int i = 0; i < length; i++) {
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int number = random.nextInt(10);
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sb.append(str.charAt(number));
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}
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return sb.toString();
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}
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public static String getComplexRandomString(int length) {
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String str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
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Random random = new Random();
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StringBuffer sb = new StringBuffer();
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for (int i = 0; i < length; i++) {
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int number = random.nextInt(62);
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sb.append(str.charAt(number));
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}
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return sb.toString();
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}
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public static String getClassCodeString(int length) {
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String str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
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Random random = new Random();
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StringBuffer sb = new StringBuffer();
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for (int i = 0; i < length; i++) {
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int number = random.nextInt(36);
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sb.append(str.charAt(number));
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}
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return sb.toString();
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}
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public static String convertPropertiesToHtml(String properties) {
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//1:容量:6:32GB_4:样式:12:塑料壳
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StringBuilder sBuilder = new StringBuilder();
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String[] propArr = properties.split("_");
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for (String props : propArr) {
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String[] valueArr = props.split(":");
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sBuilder.append(valueArr[1]).append(":").append(valueArr[3]).append("<br>");
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}
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return sBuilder.toString();
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}
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public static List<Integer> dealStrToList(String str) {
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List<Integer> list = new ArrayList<>();
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if (null == str || str == "" || str.isEmpty()) {
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return list;
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}
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String[] strArray = str.split(";");
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for (String numStr : strArray) {
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switch (numStr) {
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case "周一":
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list.add(1);
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break;
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case "周二":
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list.add(2);
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break;
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case "周三":
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list.add(3);
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break;
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case "周四":
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list.add(4);
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break;
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case "周五":
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list.add(5);
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break;
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case "周六":
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list.add(6);
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break;
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case "周日":
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list.add(7);
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break;
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}
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}
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return list;
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}
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}
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