java实现微信公众平台中的字典排序

开发十年，就只剩下这套Java开发体系了 >>>   

一、利用Java自带的方法实现字典序排序
 

import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;



public static void main(String [] args){
/*
* 规则描述
*1. 将token、timestamp、nonce三个参数进行字典序排序
*2. 将三个参数字符串拼接成一个字符串进行sha1加密
*3. 开发者获得加密后的字符串可与signature对比，标识该请求来源于微信 
*/

String signature="0f829ac4e6689efbd338abda4c090f90bab60725";
String timestamp="1455868453";
String nonce="1677866950";
String token="weixin";

ArrayList<String> list=new ArrayList<String>();
list.add(nonce);
list.add(timestamp);
list.add(token);

Collections.sort(list);


System.out.println(DigestUtils.sha1Hex(list.get(0)+list.get(1)+list.get(2)));

//微信返回的加密串
System.out.println(signature2);
}

控制台输出：

0f829ac4e6689efbd338abda4c090f90bab60725
0f829ac4e6689efbd338abda4c090f90bab60725

 

二、java中对map的字典序排序

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<String,String> map=new HashMap<String,String>();  
  
map.put("jsapi_ticket", jsapi_ticket);  
map.put("timestamp", timestamp+"");  
map.put("nonceStr", nonceStr);  
map.put("url", url);  
  
Collection<String> keyset= map.keySet();   
  
List list=new ArrayList<String>(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<list.size();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+"×tamp="+timestamp+"&url="+url;  
  
  
  
//System.out.println(DigestUtils.shaHex("jsapi_ticket=sM4AOVdWfPE4DxkXGEs8VMCPGGVi4C3VM0P37wVUCFvkVAy_90u5h9nbSlYy3-Sl-HhTdfl2fzFy1AOcHKP7qg&noncestr=Wm3WZYTPz0wzccnW×tamp=1414587457&url=http://mp.weixin.qq.com?params=value"));  
//微信返回的加密串  
String signature=DigestUtils.sha1Hex(sign);//sha1加密  
System.out.println(signature);  
  
  
}  
}