java中对map的字典序排序，算法验证比对微信官网https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1421141115&token=&lang=zh_CN，搜索关键字“附录1-JS-SDK使用权限签名算法”

import java.util.ArrayList;

import java.util.Collection;

import java.util.Collections;

import java.util.HashMap;

import java.util.List;

import org.apache.commons.codec.digest.DigestUtils;

import com.opensymphony.xwork2.ActionSupport;

public class Test extends ActionSupport {

//测试页面

public String test(){

return SUCCESS;

}

public static void main(String [] args){

String jsapi_ticket="kgt8ON7yVITDhtdwci0qef4Fd1u2d2iWwTE-nt2tSR7Me3FmWAhtxJa3QQCiMdLper4cUrqpDxkDJ6ljLgc7PA";

int timestamp=1460637652;

String nonceStr="C1WNnEpCwq4wa158";

String url="http://qq.test.com/test/index.html";

//字典序排序

HashMap map=new HashMap();

map.put("jsapi_ticket", jsapi_ticket);

map.put("timestamp", timestamp+"");

map.put("nonceStr", nonceStr);

map.put("url", url);

Collection keyset= map.keySet();

List list=new ArrayList(keyset);

Collections.sort(list);

//这种打印出的字符串顺序和微信官网提供的字典序顺序是一致的

for(int i=0;i

System.out.println(list.get(i)+"="+map.get(list.get(i)));

}

//微信官网写的按照字典序排序后的字符串 String sign="jsapi_ticket="+jsapi_ticket+"&noncestr="+nonceStr+"&timestamp="+timestamp+"&url="+url; //System.out.println(DigestUtils.shaHex("jsapi_ticket=sM4AOVdWfPE4DxkXGEs8VMCPGGVi4C3VM0P37wVUCFvkVAy_90u5h9nbSlYy3-Sl-HhTdfl2fzFy1AOcHKP7qg&noncestr=Wm3WZYTPz0wzccnW&timestamp=1414587457&url=http://mp.weixin.qq.com?params=value")); //微信返回的加密串 String signature=DigestUtils.shaHex(sign);//sha1加密 System.out.println(signature); } }