80 lines
2.4 KiB
Java
80 lines
2.4 KiB
Java
package com.nis.util;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map.Entry;
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import java.util.Set;
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public class FormatUtils {
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/**
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* 将List<HashMap<String,Object>>中HashMap的key全部转化为变量形式，<br>
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* 如{"BRH_ID":"1234","BRH_NAME":"机构"}改为{"brhId":"1234","brhName":"机构"}
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*
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* @param list
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* @return
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*/
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public static List<HashMap<String, Object>> formatHashMapKeyInList(
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List<HashMap<String, Object>> list) {
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List result = new ArrayList();
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// 遍历list后进行格式化列表元素
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if (list!=null){
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for (HashMap<String, Object> h : list) {
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// 将hashMap的key转化为驼峰格式，如{"BRH_ID":"1234"}改为{"brhId":"1234"}
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result.add(formatHashMapKey(h));
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}
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}
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return result;
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}
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/**
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* 将hashMap的key转化为驼峰格式，如{"BRH_ID":"1234","BRH_NAME":"机构"}改为{"brhId":"1234",
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* "brhName":"机构"}
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*
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* @param hashMap
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* @return
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*/
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public static HashMap<String, Object> formatHashMapKey(
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HashMap<String, Object> hashMap) {
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HashMap result = new HashMap();
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String key = null;
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// 遍历map
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for (Entry<String, Object> e : (Set<Entry<String, Object>>) hashMap.entrySet()) {
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key = (String) e.getKey();
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// 将hashMap的key转化为驼峰格式
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key = formatDBNameToVarName(key);
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// 封装为新的map
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result.put(key, e.getValue());
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}
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// 返回格式化后的map
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return result;
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}
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/**
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* 数据库列名转化为属性名,如DEAL_ID=dealId; <br>
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* 不能保证完全正确，如DBUTIL不会智能的转化为DBUtil,而会转化为dbutil, <br>
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* 规则为全部转化为单词，然后首字母小写
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*
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* @param DBName
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* @return
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*/
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public static String formatDBNameToVarName(String DBName) {
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StringBuilder result = new StringBuilder("");
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// 以"_"分割
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String[] DBNameArr = DBName.split("_");
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for (int i = 0, j = DBNameArr.length; i < j; i++) {
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// 获取以"_"分割后的字符数组的每个元素的第一个字母，
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result.append(DBNameArr[i].charAt(0));
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// 将其他字符转换成小写
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result.append(DBNameArr[i].substring(1).toLowerCase());
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}
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char c0 = result.charAt(0);
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if (c0 >= 'A' && c0 <= 'Z')
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c0 = (char) (c0 + 'a' - 'A');
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result.setCharAt(0, c0);
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return result.toString();
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}
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}
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