package com.moral.util;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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/**
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* @ClassName ConvertUtils
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* @Description TODO
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* @Author 陈凯裕
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* @Date 2021/3/26 14:52
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* @Version TODO
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**/
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public class ConvertUtils {
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/**
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* @Description: 下划线转驼峰
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* @Param: [underscore]
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* @return: java.lang.String
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* @Author: 陈凯裕
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* @Date: 2021/3/26
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*/
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public static String underscoreToCamelCase(String underscore) {
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String[] ss = underscore.split("_");
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if (ss.length == 1) {
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return underscore;
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}
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StringBuffer sb = new StringBuffer();
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sb.append(ss[0]);
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for (int i = 1; i < ss.length; i++) {
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sb.append(upperFirstCase(ss[i]));
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}
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return sb.toString();
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}
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/**
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* @Description: 驼峰转下划线
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* @Param: [camelCase]
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* @return: java.lang.String
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* @Author: 陈凯裕
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* @Date: 2021/3/26
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*/
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public static String toLine(String camelCase) {
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Pattern humpPattern = Pattern.compile("[A-Z]");
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Matcher matcher = humpPattern.matcher(camelCase);
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StringBuffer sb = new StringBuffer();
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while (matcher.find()) {
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matcher.appendReplacement(sb, "_" + matcher.group(0).toLowerCase());
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}
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matcher.appendTail(sb);
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return sb.toString();
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}
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/**
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* @Description: 首字母转为小写
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* @Param: [str]
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* @return: java.lang.String
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* @Author: 陈凯裕
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* @Date: 2021/3/26
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*/
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private static String lowerFirstCase(String str) {
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char[] chars = str.toCharArray();
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chars[0] += 32;
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return String.valueOf(chars);
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}
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/**
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* @Description: 首字母转为大写
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* @Param: [str]
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* @return: java.lang.String
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* @Author: 陈凯裕
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* @Date: 2021/3/26
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*/
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private static String upperFirstCase(String str) {
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char[] chars = str.toCharArray();
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chars[0] -= 32;
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return String.valueOf(chars);
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}
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}
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