JAVA 中文汉字转换阿拉伯数字（最终版，支持转换的最大值不超过int限制）
import org.springframework.util.ObjectUtils;
import org.springframework.util.StringUtils;
import java.util.HashMap;
import java.util.List;
/**
* @author <a href="/motcs">motcs</a>
* @since 2022-05-18 18:39:58 星期三
*/
public class ConverterNumber {
static final List<String> CHINESE_NUMBER = List.of("零", "一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "百", "千", "万", "亿");
private static final HashMap<Character, Integer> chineseMap = new HashMap<>() {{
put('零', 0);
put('一', 1);
put('二', 2);
put('三', 3);
put('四', 4);
put('五', 5);
put('六', 6);
put('七', 7);
put('八', 8);
put('九', 9);
put('十', 10);
put('百', 100);
put('千', 1000);
put('万', 10000);
put('亿', 100000000);
}};
public static String chineseToNumber(String chinese) {
if (ObjectUtils.isEmpty(chinese)) {
return "00";
}
//判断是否十纯中文汉字，不是则直接返回00
if (!isChineseNum(chinese)) {
return "00";
}
int number = 0;
int temp = 0;
for (int i = 0; i < chinese.length(); i++) {
int current = chineseMap.get(chinese.charAt(i));
if (current < 10) {
temp += current;
} else {
// 处理十百千的情况
if (current == 10||current == 100||current == 1000) {
if (temp == 0) {
temp = 1;
}
number += temp * current;
temp = 0;
} else { // 处理其他情况
number += temp;
number += current;
temp = 0;
}
}
}
number += temp;
return append(String.valueOf(number));
}
/**
* 判断传入的字符串是否全是汉字数字
*
* @param chineseStr 中文
* @return 是否全是中文数字
*/
private static boolean isChineseNum(String chineseStr) {
for (char c : chineseStr.toCharArray()) {
if (!CHINESE_NUMBER.contains(String.valueOf(c))) {
return false;
}
}
return true;
}
private static String append(String num) {
if (StringUtils.hasLength(num)) {
return num.length() == 2 ? num : "0" + num;
}
return "00";
}
}