微信服务号/企业号防止AccessToken过期的操作

package engineerjsp.accesstoken.util; /** * IniAccessToeknUtil * @author Engineer-Jsp * @date 2014.12.11 * */ import java.io.BufferedReader; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.net.ConnectException; import java.net.URL; import javax.net.ssl.HttpsURLConnection; import javax.net.ssl.SSLContext; import javax.net.ssl.SSLSocketFactory; import javax.net.ssl.TrustManager; import net.sf.json.JSONException; import net.sf.json.JSONObject; public class IniAccessToeknUtil { /** * 获取access_token的接口地址（GET） 如果是企业号类型，替换参数和地址即可 * */ public final static String access_token_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET"; /** * 获取access_token * @param appid 凭证 * @param appsecret 密钥 * @return */ public static InitAccessTokenBean getAccessToken(String appid, String appsecret) { InitAccessTokenBean accessToken = null; String requestUrl = access_token_url.replace("APPID", appid).replace("APPSECRET", appsecret); JSONObject jsonObject = HttpRequest(requestUrl, "GET", null); // 如果请求成功 if (null != jsonObject) { try { accessToken = new InitAccessTokenBean(); accessToken.setToken(jsonObject.getString("access_token")); accessToken.setExpiresIn(jsonObject.getInt("expires_in")); } catch (JSONException e) { accessToken = null; System.out.println("Exception:"+e); // 获取 accesstoken 失败 String result = String.format("获取token失败 errcode:%s errmsg:%s",jsonObject.getInt("errcode"),jsonObject.getString("errmsg") ); System.out.println(result); } } return accessToken; } /** * 发起https请求并获取结果 * @param requestUrl 请求地址 * @param requestMethod 请求方式（GET、POST） * @param outputStr 提交的数据 * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值) */ public static JSONObject HttpRequest(String requestUrl, String requestMethod, String outputStr) { JSONObject jsonObject = null; StringBuffer buffer = new StringBuffer(); try { // 创建SSLContext对象，并使用我们指定的信任管理器初始化 TrustManager[] tm = { new InitAccessTokenX509() }; SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE"); sslContext.init(null, tm, new java.security.SecureRandom()); // 从上述SSLContext对象中得到SSLSocketFactory对象 SSLSocketFactory ssf = sslContext.getSocketFactory(); URL url = new URL(requestUrl); HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection(); httpUrlConn.setSSLSocketFactory(ssf); httpUrlConn.setDoOutput(true); httpUrlConn.setDoInput(true); httpUrlConn.setUseCaches(false); // 设置请求方式（GET/POST） httpUrlConn.setRequestMethod(requestMethod); if ("GET".equalsIgnoreCase(requestMethod)) httpUrlConn.connect(); // 当有数据需要提交时 if (null != outputStr) { OutputStream outputStream = httpUrlConn.getOutputStream(); // 注意编码格式，防止中文乱码 outputStream.write(outputStr.getBytes("UTF-8")); outputStream.close(); } // 将返回的输入流转换成字符串 InputStream inputStream = httpUrlConn.getInputStream(); InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8"); BufferedReader bufferedReader = new BufferedReader(inputStreamReader); String str = null; while ((str = bufferedReader.readLine()) != null) { buffer.append(str); } bufferedReader.close(); inputStreamReader.close(); // 释放资源 inputStream.close(); inputStream = null; httpUrlConn.disconnect(); jsonObject = JSONObject.fromObject(buffer.toString()); } catch (ConnectException ce) { System.out.println("Connection Timed Out......"); } catch (Exception e) { String result = String.format("Https Request Error:%s", e); System.out.println(result); } return jsonObject; } }