Maison >Applet WeChat >Développement WeChat >Paiement du compte public WeChat (1) Comment obtenir l'openId de l'utilisateur
1. Obtenez un compte apikey, appsecret et marchand
Enregistrez un compte public et un compte marchand
2. Obtenez l'OpenId de l'utilisateur
https://open.weixin.qq.com/connect/oauth/authorize?appid= appid&redirect_uri=url&response_type =code&scope=snsapi_userinfo&state=park#wechat_redirect
String code = request.getParameter("code")3.code pour openId
/** * 常量类 * @author rory.wu * */ public class Constants { // 第三方用户唯一凭证 public static String appid = ""; // 第三方用户唯一凭证密钥 public static String appsecret = ""; //商户ID public static String mch_id=""; //获取openId public static String oauth_url = "https://api.weixin.qq.com/sns/oauth/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code"; }
/** * 通用工具类 * @author rory.wu * @version . * @since 年月日 */ public class CommonUtil { private static Logger log = Logger.getLogger(CommonUtil.class); public static JSONObject httpsRequestToJsonObject(String requestUrl, String requestMethod, String outputStr) { JSONObject jsonObject = null; try { StringBuffer buffer = httpsRequest(requestUrl, requestMethod, outputStr); jsonObject = JSONObject.fromObject(buffer.toString()); } catch (ConnectException ce) { log.error("连接超时:"+ce.getMessage()); } catch (Exception e) { log.error("https请求异常:"+e.getMessage()); } return jsonObject; } private static StringBuffer httpsRequest(String requestUrl, String requestMethod, String output) throws NoSuchAlgorithmException, NoSuchProviderException, KeyManagementException, MalformedURLException, IOException, ProtocolException, UnsupportedEncodingException { URL url = new URL(requestUrl); HttpsURLConnection connection = (HttpsURLConnection) url.openConnection(); connection.setDoOutput(true); connection.setDoInput(true); connection.setUseCaches(false); connection.setRequestMethod(requestMethod); if (null != output) { OutputStream outputStream = connection.getOutputStream(); outputStream.write(output.getBytes("UTF-")); outputStream.close(); } // 从输入流读取返回内容 InputStream inputStream = connection.getInputStream(); InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-"); BufferedReader bufferedReader = new BufferedReader(inputStreamReader); String str = null; StringBuffer buffer = new StringBuffer(); while ((str = bufferedReader.readLine()) != null) { buffer.append(str); } bufferedReader.close(); inputStreamReader.close(); inputStream.close(); inputStream = null; connection.disconnect(); return buffer; } } /** * 获取用户的openId,并放入session * @param code 微信返回的code */ private void setOpenId(String code) { session.put("code", code); String oauth_url = Constants.oauth_url.replace("APPID", Constants.appid).replace("SECRET", Constants.appsecret).replace("CODE", String.valueOf(session.get("code"))); log.info("oauth_url:"+oauth_url); JSONObject jsonObject = CommonUtil.httpsRequestToJsonObject(oauth_url, "POST", null); log.info("jsonObject:"+jsonObject); Object errorCode = jsonObject.get("errcode"); if(errorCode != null) { log.info("code不合法"); }else{ String openId = jsonObject.getString("openid"); log.info("openId:"+openId); session.put("openId", openId); } } oauth_url返回的格式是: { "access_token":"ACCESS_TOKEN", "expires_in":, "refresh_token":"REFRESH_TOKEN", "openid":"OPENID", "scope":"SCOPE", "unionid": "o_bmasdasdsad_sgVthMZOPfL" } Code无效时: { "errcode": ,"errmsg":"invalid code" }Le contenu ci-dessus est le paiement du compte public WeChat (1) comment obtenir l'openId utilisateur partagé par l'éditeur de Script House. J'espère qu'il vous plaira. Pour plus de paiements par compte public WeChat (1) Comment obtenir des articles sur l'utilisateur openId, veuillez faire attention au site Web PHP chinois !