微信公众号入门笔记（四）获取access_token(3/4)

本篇文章主要介绍了"微信公众号入门笔记（四）获取access_token"，主要涉及到方面的内容，对于Javajrs看球网直播吧_低调看直播体育app软件下载_低调看体育直播感兴趣的同学可以参考一下： 作者：zhutulang 以下是微信公众平台开发者文档中截取的内容： access_token是公众号的全局唯一票据，公众号调用各接口时都需使用access_t...

package com.dongliushui.quartz;

importjava.io.UnsupportedEncodingException;

import org.apache.log4j.Logger;
importorg.springframework.beans.factory.annotation.Value;
import org.springframework.scheduling.annotation.Scheduled;
importorg.springframework.stereotype.Component;

import com.dongliushui.util.HttpUtil;

/**
 *@ClassName: AccessTokenTaker
 *@Description: 获取access_token
 *@author zhutulang
 *@date 2016年1月10日
 *@version V1.0
 */
@Component
public class AccessTokenTaker {

         @Value("#{weixinProperties['AppId']}")
         private  String appId;

         @Value("#{weixinProperties['AppSecret']}")
         private  String appSecret;

         @Value("#{weixinProperties['get_access_token_url']}")
         private  String getAccessTokenUrl;

         /**
          * access_token
          */
         privatestatic  String ACCESS_TOKEN = null;
         /**
          * 上次更新access_token时间
          */
         privatestatic  LongLAST_ACCESS_TOKEN_UPDATE_TIME = null;

         privatestatic Logger log = Logger.getLogger(AccessTokenTaker.class);

         /**
          * 
Title: get<／p>
          * 
Description: 每隔一个小时去获取一次access_token<／p>
          * @author zhutulang
          * @version 1.0
          */
         @Scheduled(fixedRate=3600000)
         privatevoid getTask(){
                   get();
         }

         /**
          * 
Title: getFromCache<／p>
          * 
Description: 从缓存中获取access_token<／p>
          * @return
          * @author zhutulang
          * @version 1.0
          */
         public  String getFromCache(){
                   returnACCESS_TOKEN;
         }

         /**
          * 
Title: getNew<／p>
          * 
Description: 强制更新、获取access_token<／p>
          * 
如果发现现在的时间戳和上次更新的时间戳间隔小于5分钟，那么不更新
          * @return
          * @author zhutulang
          * @version 1.0
          */
         publicsynchronized  String getNew(){
                   longtimeNow = System.currentTimeMillis();
                   if(LAST_ACCESS_TOKEN_UPDATE_TIME== null){
                            get();
                   }elseif(timeNow - LAST_ACCESS_TOKEN_UPDATE_TIME < 300000){
                            //如果是5分钟以内
                            returnACCESS_TOKEN;
                   }else{
                            get();
                   }
                   returnACCESS_TOKEN;
         }

         /**
          * 
Title: get<／p>
          * 
Description: 调用获取access_token接口<／p>
          * @author zhutulang
          * @version 1.0
          */
         synchronized  void get(){
                   Stringurl = getAccessTokenUrl.replace("APPID",appId).replace("APPSECRET", appSecret);
                   StringcontentType = "application/json";
                   byte[]bytes = HttpUtil.doHttpsGet(url, contentType);
                   try{
                            StringaccessToken = new String(bytes, "UTF-8");
                            longtimeNow = System.currentTimeMillis();
                            ACCESS_TOKEN= accessToken;
                            LAST_ACCESS_TOKEN_UPDATE_TIME= timeNow;
                            log.info("执行获取access_token任务，access_token="+ACCESS_TOKEN);
                 log.info("时间戳="+LAST_ACCESS_TOKEN_UPDATE_TIME);
                   }catch (UnsupportedEncodingException e) {
                            //TODO Auto-generated catch block
                            e.printStackTrace();
                   }
         }

         publicString getAppId() {
                   returnappId;
         }

         publicvoid setAppId(String appId) {
                   this.appId= appId;
         }

         publicString getAppSecret() {
                   returnappSecret;
         }

         publicvoid setAppSecret(String appSecret) {
                   this.appSecret= appSecret;
         }

         publicString getGetAccessTokenUrl() {
                   returngetAccessTokenUrl;
         }

         publicvoid setGetAccessTokenUrl(String getAccessTokenUrl) {
                   this.getAccessTokenUrl= getAccessTokenUrl;
         }
}

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