//调用登录接口，获取 codewx.login({success: function (res) {wx.getSetting({success(setRes) {// 判断是否已授权if (!setRes.authSetting['scope.userInfo']) {// 授权访问wx.authorize({scope: 'scope.userInfo',success() {//获取用户信息wx.getUserInfo({lang: "zh_CN",success: function (userRes) {//发起网络请求wx.request({url: config.loginWXUrl,data: {code: res.code,encryptedData: userRes.encryptedData,iv: userRes.iv},header: {"Content-Type": "application/x-www-form-urlencoded"},method: 'POST',//服务端的回掉success: function (result) {var data = result.data.result;data.expireTime = nowDate + EXPIRETIME;wx.setStorageSync("userInfo", data);userInfo = data;}})}})}})} else {//获取用户信息wx.getUserInfo({lang: "zh_CN",success: function (userRes) {//发起网络请求wx.request({url: config.loginWXUrl,data: {code: res.code,encryptedData: userRes.encryptedData,iv: userRes.iv},header: {"Content-Type": "application/x-www-form-urlencoded"},method: 'POST',success: function (result) {var data = result.data.result;data.expireTime = nowDate + EXPIRETIME;wx.setStorageSync("userInfo", data);userInfo = data;}})}})}}})}})

<dependency><groupId>org.codehaus.xfire</groupId><artifactId>xfire-core</artifactId><version>1.2.6</version></dependency><dependency><groupId>org.bouncycastle</groupId><artifactId>bcprov-jdk16</artifactId><version>1.46</version></dependency>

/** * 微信小程序信息获取 *  * @author zhy */public class WXAppletUserInfo {private static Logger log = Logger.getLogger(WXAppletUserInfo.class);/**     * 获取微信小程序 session_key 和 openid     *      * @author zhy     * @param code 调用微信登陆返回的Code     * @return     */public static JSONObject getSessionKeyOropenid(String code){//微信端登录code值String wxCode = code;ResourceBundle resource = ResourceBundle.getBundle("weixin");//读取属性文件String requestUrl = resource.getString("url");//请求地址 https://api.weixin.qq.com/sns/jscode2sessionMap<String,String> requestUrlParam = new HashMap<String,String>();requestUrlParam.put("appid", resource.getString("appId"));//开发者设置中的appIdrequestUrlParam.put("secret", resource.getString("appSecret"));//开发者设置中的appSecretrequestUrlParam.put("js_code", wxCode);//小程序调用wx.login返回的coderequestUrlParam.put("grant_type", "authorization_code");//默认参数//发送post请求读取调用微信 https://api.weixin.qq.com/sns/jscode2session 接口获取openid用户唯一标识JSONObject jsonObject = JSON.parseObject(UrlUtil.sendPost(requestUrl, requestUrlParam));return jsonObject;}/**     * 解密用户敏感数据获取用户信息     *      * @author zhy     * @param sessionKey 数据进行加密签名的密钥     * @param encryptedData 包括敏感数据在内的完整用户信息的加密数据     * @param iv 加密算法的初始向量     * @return     */public static JSONObject getUserInfo(String encryptedData,String sessionKey,String iv){// 被加密的数据byte[] dataByte = Base64.decode(encryptedData);// 加密秘钥byte[] keyByte = Base64.decode(sessionKey);// 偏移量byte[] ivByte = Base64.decode(iv);try {// 如果密钥不足16位，那么就补足.  这个if 中的内容很重要int base = 16;if (keyByte.length % base != 0) {int groups = keyByte.length / base + (keyByte.length % base != 0 ? 1 : 0);byte[] temp = new byte[groups * base];Arrays.fill(temp, (byte) 0);System.arraycopy(keyByte, 0, temp, 0, keyByte.length);keyByte = temp;}// 初始化Security.addProvider(new BouncyCastleProvider());Cipher cipher = Cipher.getInstance("AES/CBC/PKCS7Padding","BC");SecretKeySpec spec = new SecretKeySpec(keyByte, "AES");AlgorithmParameters parameters = AlgorithmParameters.getInstance("AES");parameters.init(new IvParameterSpec(ivByte));cipher.init(Cipher.DECRYPT_MODE, spec, parameters);// 初始化byte[] resultByte = cipher.doFinal(dataByte);if (null != resultByte && resultByte.length > 0) {String result = new String(resultByte, "UTF-8");return JSON.parseObject(result);}} catch (NoSuchAlgorithmException e) {log.error(e.getMessage(), e);} catch (NoSuchPaddingException e) {        	log.error(e.getMessage(), e);} catch (InvalidParameterSpecException e) {        	log.error(e.getMessage(), e);} catch (IllegalBlockSizeException e) {        	log.error(e.getMessage(), e);} catch (BadPaddingException e) {        	log.error(e.getMessage(), e);} catch (UnsupportedEncodingException e) {        	log.error(e.getMessage(), e);} catch (InvalidKeyException e) {        	log.error(e.getMessage(), e);} catch (InvalidAlgorithmParameterException e) {        	log.error(e.getMessage(), e);} catch (NoSuchProviderException e) {        	log.error(e.getMessage(), e);}return null;}}

/**	 * 向指定 URL 发送POST方法的请求	 * 	 * @param url 发送请求的 URL	 * @param param 请求参数	 * @return 所代表远程资源的响应结果	 */public static String sendPost(String url, Map<String, ?> paramMap) {PrintWriter out = null;BufferedReader in = null;String result = "";String param = "";		Iterator<String> it = paramMap.keySet().iterator();while(it.hasNext()) {			String key = it.next();			param += key + "=" + paramMap.get(key) + "&";		}try {URL realUrl = new URL(url);// 打开和URL之间的连接URLConnection conn = realUrl.openConnection();// 设置通用的请求属性conn.setRequestProperty("accept", "*/*");conn.setRequestProperty("connection", "Keep-Alive");conn.setRequestProperty("Accept-Charset", "utf-8");conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");// 发送POST请求必须设置如下两行conn.setDoOutput(true);conn.setDoInput(true);// 获取URLConnection对象对应的输出流out = new PrintWriter(conn.getOutputStream());// 发送请求参数out.print(param);// flush输出流的缓冲out.flush();// 定义BufferedReader输入流来读取URL的响应in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));String line;while ((line = in.readLine()) != null) {result += line;}} catch (Exception e) {        	log.error(e.getMessage(), e);}//使用finally块来关闭输出流、输入流finally{try{if(out!=null){out.close();}if(in!=null){in.close();}}catch(IOException ex){ex.printStackTrace();}}return result;}