本文实例为大家分享了java如何获取微信accessToken,供大家参考,具体内容如下
package com.fengdi.lianmeng.task; import com.fengdi.lianmeng.common.CacheHelper; import com.fengdi.lianmeng.util.http.HttpRequest; import com.fengdi.lianmeng.util.tencent.CloudSignHelper; import com.fengdi.lianmeng.util.tencent.Interface; import net.sf.json.JSONObject; import org.quartz.JobExecutionContext; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * 定时获取微信accessToken */ public class GetWeiXinAccessTokenTask { private static Logger logger = LoggerFactory.getLogger(GetWeiXinAccessTokenTask.class); /** * 每90分钟,获取一次微信accessToken */ public void getWeiXinAccessToken (JobExecutionContext context){ try{ logger.info("获取微信定时AccessToken任务启动了"); //封装请求数据 String params = "grant_type=client_credential" + "&secret=" + CloudSignHelper.wxspSecret + //小程序的 app_secret (在微信小程序管理后台获取) "&appid="+ CloudSignHelper.appid;//小程序唯一标识appid (在微信小程序管理后台获取) //发送GET请求 String result = HttpRequest.sendGet("https://api.weixin.qq.com/cgi-bin/token",params); // 解析相应内容(转换成json对象) JSONObject jsonObject = JSONObject.fromObject(result); String accessToken = (String) jsonObject.get("access_token"); CacheHelper.put("wxAccessToken",accessToken);//将accessToken放入缓存,用的时候取就行 logger.info("获取微信定时AccessToken任务结束了"); }catch(Exception ex){ logger.error("获取微信定时AccessToken任务失败.",ex); } } }
GET请求
public static String sendGet(String url,String param) { String result = ""; BufferedReader in = null; try { String urlNameString = url + "?" + param; URL realUrl = new URL(urlNameString); // 打开和URL之间的连接 URLConnection connection = realUrl.openConnection(); // 设置通用的请求属性 connection.setRequestProperty("accept","*/*"); connection.setRequestProperty("connection","Keep-Alive"); connection.setRequestProperty("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); // 建立实际的连接 connection.connect(); // 获取所有响应头字段 Map<String,List<String>> map = connection.getHeaderFields(); // 遍历所有的响应头字段 for (String key : map.keySet()) { System.out.println(key + "--->" + map.get(key)); } // 定义 BufferedReader输入流来读取URL的响应 in = new BufferedReader(new InputStreamReader(connection.getInputStream())); String line; while ((line = in.readLine()) != null) { result += line; } } catch (Exception e) { System.out.println("发送GET请求出现异常!" + e); e.printStackTrace(); } // 使用finally块来关闭输入流 finally { try { if (in != null) { in.close(); } } catch (Exception e2) { e2.printStackTrace(); } } return result; }原文链接:https://www.f2er.com/java/526541.html