1.[代码][Java]代码

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 getUrlParams(String param) {

Map map = new HashMap();

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 map,

boolean isSort) {

if (map == null) {

return "";

}

StringBuffer sb = new StringBuffer();

List keys = new ArrayList(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 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 map = new HashMap();

map.put("age", "20");

map.put("sex", "man");

map.put("name", "zhangsan");

System.out.println(getUrlParamsByMap(map, false));

}

}