Java 驼峰与下划线的属性名互相转换

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public class StringUtil {/** * 转换为下划线 *  * @param camelCaseName * @return */public static String underscoreName(String camelCaseName) {StringBuilder result = new StringBuilder();if (camelCaseName != null && camelCaseName.length() > 0) {result.append(camelCaseName.substring(0, 1).toLowerCase());for (int i = 1; i < camelCaseName.length(); i++) {char ch = camelCaseName.charAt(i);if (Character.isUpperCase(ch)) {result.append("_");result.append(Character.toLowerCase(ch));} else {result.append(ch);}}}return result.toString();}/** * 转换为驼峰 *  * @param underscoreName * @return */public static String camelCaseName(String underscoreName) {StringBuilder result = new StringBuilder();if (underscoreName != null && underscoreName.length() > 0) {boolean flag = false;for (int i = 0; i < underscoreName.length(); i++) {char ch = underscoreName.charAt(i);if ("_".charAt(0) == ch) {flag = true;} else {if (flag) {result.append(Character.toUpperCase(ch));flag = false;} else {result.append(ch);}}}}return result.toString();}}

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