由于公眾號換了公司主體，需要做遷移，玩家的openId數據需要做處理。
(我是按我要的json格式，將粉絲導成了1萬條數據的一個json文件)
?文件格式：
{"info":[{"openId":"ogVous494ltuNmO4zHb1seHeGLSk"}] }
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package exportFansFromPublic;import java.io.FileWriter; import java.io.PrintWriter; import java.util.HashMap; import java.util.List; import java.util.Map; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONArray; import com.alibaba.fastjson.JSONObject; import com.odao.weixin.api.support.AccessTokenKit; import com.odao.weixin.api.support.HttpKit;/*** 導出公眾號粉絲* @author wangfj*/ public class ExportFansFromPublic { @SuppressWarnings({ "unchecked", "static-access","rawtypes"})public static void main(String[] args) throws Exception { String token = AccessTokenKit.getTokenNew("appId", "app秘鑰");String accesstoken = (String) ((Map) JSON.parseObject(token, Map.class)).get("access_token");Map<String,String> params = new HashMap<String,String>();params.put("access_token", accesstoken);String nextOpenId = "";for(int i=1;i<=50;i++){ //我這了定的50，是根據公眾號粉絲數量來的，一個文件一萬條，你們自己算if(!"".equals(nextOpenId)){params.put("next_openid", nextOpenId);}//根據appId,appSecret獲取數據粉絲openId(1次1萬條)//格式：{"data"：{"openid":["oneOpenId,twoOpenId"]},"next_openid":"theNextOpenId"}try{String data = HttpKit.get("https://api.weixin.qq.com/cgi-bin/user/get",params);JSONObject json = (JSONObject) JSONObject.parse(data);String openId = json.get("data").toString();JSONObject open = (JSONObject) JSONObject.parse(openId);String openIds = open.get("openid").toString();JSONArray arr= JSONObject.parseArray(openIds);List<String> list = arr.toJavaObject(arr, List.class);nextOpenId = writerJson(list,i);}catch(Exception e){System.out.println("導出完畢");break;} }}public static String writerJson(List<String> list,int fileName){String nextOpenId = "";FileWriter fw = null; PrintWriter out = null; try { // 指定生成txt的文件路徑 fw = new FileWriter("C:/Users/admin/Desktop/fan/"+fileName+".json"); out = new PrintWriter(fw); out.println("{");out.println("\t\"info\":[");for(int i=0;i<list.size();i++){if(i!=list.size()-1){out.println("\t\t{\"openId\":\""+list.get(i)+"\"},");}else{nextOpenId = list.get(i);out.println("\t\t{\"openId\":\""+list.get(i)+"\"}");}}out.println("\t]");out.println("}");} catch (Exception e) { e.printStackTrace();} finally { try { out.close(); fw.close(); out.flush(); // 由于此處用到了緩沖流，如果數據量過大，不進行flush操作，某些數據將依舊 存在于內從中而不會寫入文件，此問題一定要注意 } catch (Exception e) { e.printStackTrace(); } } return nextOpenId;} }
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