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【Java】 url转map map转string

作者:Gilbert / 发布于2015/7/15/ 587


	package com.jiyuren.fast.utils;
	
	import java.util.ArrayList;
	import java.util.Collections;
	import java.util.HashMap;
	import java.util.List;
	import java.util.Map;
	
	/**
	* @author jiyuren
	*/
	public class UrlEncode {
	 /**
	 * 将 String 转为 map
	 *
	 * @param param
	 * aa=11&bb=22&cc=33
	 * @return
	 */
	 public static Map<String, Object> getUrlParams(String param) {
	 Map<String, Object> map = new HashMap<String, Object>();
	 if ("".equals(param) || null == param) {
	 return map;
	 }
	 String[] params = param.split("&");
	 for (int i = 0; i < params.length; i++) {
	 String[] p = params[i].split("=");
	 if (p.length == 2) {
	 map.put(p[0], p[1]);
	 }
	 }
	 return map;
	 }
	
	 /**
	 * 将map 转为 string
	 *
	 * @param map
	 * @return
	 */
	 public static String getUrlParamsByMap(Map<String, Object> map,
	 boolean isSort) {
	 if (map == null) {
	 return "";
	 }
	 StringBuffer sb = new StringBuffer();
	 List<String> keys = new ArrayList<String>(map.keySet());
	 if (isSort) {
	 Collections.sort(keys);
	 }
	 for (int i = 0; i < keys.size(); i++) {
	 String key = keys.get(i);
	 String value = map.get(key).toString();
	 sb.append(key + "=" + value);
	 sb.append("&");
	 }
	 String s = sb.toString();
	 if (s.endsWith("&")) {
	 s = s.substring(0, s.lastIndexOf("&"));
	 }
	 /*
	 * for (Map.Entry<String, Object> entry : map.entrySet()) {
	 * sb.append(entry.getKey() + "=" + entry.getValue()); sb.append("&"); }
	 * String s = sb.toString(); if (s.endsWith("&")) { //s =
	 * StringUtils.substringBeforeLast(s, "&"); s = s.substring(0,
	 * s.lastIndexOf("&")); }
	 */
	 return s;
	 }
	
	 public static void main(String[] args) {
	 Map<String, Object> map = new HashMap<String, Object>();
	 map.put("age", "20");
	 map.put("sex", "man");
	 map.put("name", "zhangsan");
	 System.out.println(getUrlParamsByMap(map, false));
	
	 }
	}

试试其它关键字

　url转map　　　　map转string　

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