把map的key转换成驼峰命名
package com.talkweb.utils; import java.util.HashMap; import java.util.Iterator; import java.util.Map; import java.util.Map.Entry; public class CommTool { /** * 把map的key转换成驼峰命名 * @param map * @return */ public static Map<String, Object> toReplaceKeyLow(Map<String, Object> map) { Map re_map = new HashMap(); if (re_map != null) { Iterator var2 = map.entrySet().iterator(); while (var2.hasNext()) { Entry<String, Object> entry = (Entry) var2.next(); re_map.put(underlineToCamel((String) entry.getKey()), map.get(entry.getKey())); } map.clear(); } return re_map; } public static final char UNDERLINE = '_'; public static String underlineToCamel(String param) { if (param == null || "".equals(param.trim())) { return ""; } int len = param.length(); StringBuilder sb = new StringBuilder(len); for (int i = 0; i < len; i++) { char c = param.charAt(i); if (c == UNDERLINE) { if (++i < len) { sb.append(Character.toUpperCase(param.charAt(i))); } } else { sb.append(Character.toLowerCase(param.charAt(i))); } } return sb.toString(); } }