content: /*
   * 微信公众平台(JAVA) SDK
   *
   * Copyright (c) 2014, Ansitech Network Technology Co.,Ltd All rights reserved.
   * 
   * http://www.weixin4j.org/
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.weixin4j.component;
  
  import com.alibaba.fastjson.JSONArray;
  import com.alibaba.fastjson.JSONObject;
  import java.util.List;
  import org.apache.commons.lang.StringUtils;
  import org.weixin4j.Configuration;
  import org.weixin4j.Weixin;
  import org.weixin4j.WeixinException;
  import org.weixin4j.http.HttpsClient;
  import org.weixin4j.http.Response;
  import org.weixin4j.model.base.Token;
  
  /**
   * 基础组件
   *
   * @author yangqisheng
   * @since 0.1.0
   */
  public class BaseComponent extends AbstractComponent {
  
      public BaseComponent(Weixin weixin) {
          super(weixin);
      }
  
      /**
       * 获取access_token（每次都获取新的，请缓存下来，2小时过期）
       *
       * @return 获取的AccessToken对象
       * @throws org.weixin4j.WeixinException 微信操作异常
       */
      public Token token() throws WeixinException {
          if (StringUtils.isEmpty(weixin.getAppId())) {
              throw new IllegalArgumentException("appid can't be null or empty");
          }
          if (StringUtils.isEmpty(weixin.getSecret())) {
              throw new IllegalArgumentException("secret can't be null or empty");
          }
          //拼接参数
          String param = "?grant_type=client_credential&appid=" + weixin.getAppId() + "&secret=" + weixin.getSecret();
          //创建请求对象
          HttpsClient http = new HttpsClient();
          //调用获取access_token接口
          Response res = http.get("https://api.weixin.qq.com/cgi-bin/token" + param);
          //根据请求结果判定，是否验证成功
          JSONObject jsonObj = res.asJSONObject();
          if (jsonObj == null) {
              throw new WeixinException(getCause(-1));
          }
          if (Configuration.isDebug()) {
              System.out.println("getAccessToken返回json：" + jsonObj.toString());
          }
          Object errcode = jsonObj.get("errcode");
          if (errcode != null) {
              //返回异常信息
              throw new WeixinException(getCause(jsonObj.getIntValue("errcode")));
          }
          //设置凭证，设置accessToken和过期时间
          //update at 0.1.6 因为 fastjson 1.2.68 直接转换JSON不走set方法
          return new Token(jsonObj);
      }
  
      /**
       * 将一条长链接转成短链接
       *
       * @param long_url 长链接
       * @return 短链接
       * @throws org.weixin4j.WeixinException 微信操作异常
       */
      public String shortUrl(String long_url) throws WeixinException {
          if (StringUtils.isEmpty(long_url)) {
              throw new IllegalStateException("long_url can not be null or empty");
          }
          JSONObject postJson = new JSONObject();
          postJson.put("action", "long2short");
          postJson.put("long_url", long_url);
  
          HttpsClient http = new HttpsClient();
          //调用创建Tick的access_token接口
          Response res = http.post("https://api.weixin.qq.com/cgi-bin/shorturl?access_token=" + weixin.getToken().getAccess_token(), postJson);
          //根据请求结果判定，返回结果
          JSONObject jsonObj = res.asJSONObject();
          if (jsonObj == null) {
              throw new WeixinException(getCause(-1));
          }
          Object errcode = jsonObj.get("errcode");
          if (errcode != null && !errcode.toString().equals("0")) {
              //返回异常信息
              throw new WeixinException(getCause(jsonObj.getIntValue("errcode")));
          } else {
              return jsonObj.getString("short_url");
          }
      }
  
      /**
       * 获取微信服务器IP地址
       *
       * @return 微信服务器IP地址列表
       * @throws org.weixin4j.WeixinException 微信操作异常
       */
      public List<String> getCallbackIp() throws WeixinException {
          //创建请求对象
          HttpsClient http = new HttpsClient();
          //调用获取微信服务器IP接口
          Response res = http.get("https://api.weixin.qq.com/cgi-bin/getcallbackip?access_token=" + weixin.getToken().getAccess_token());
          //根据请求结果判定，是否验证成功
          JSONObject jsonObj = res.asJSONObject();
          //成功返回如下JSON:
          //{"ip_list":["127.0.0.1","127.0.0.1"]}
          if (jsonObj != null) {
              if (Configuration.isDebug()) {
                  System.out.println("获取getCallbackIp返回json：" + jsonObj.toString());
              }
              Object errcode = jsonObj.get("errcode");
              if (errcode != null && !errcode.toString().equals("0")) {
                  //返回异常信息
                  throw new WeixinException(getCause(jsonObj.getIntValue("errcode")));
              } else {
                  JSONArray ipList = jsonObj.getJSONArray("ip_list");
                  if (ipList != null) {
                      //转换为List
                      List ips = ipList.subList(0, ipList.size());
                      return (List<String>) ips;
                  }
              }
          }
          return null;
      }
  }
  