Java 微信公众号导出所有粉丝(openId)
由于公众号换了公司主体,需要做迁移,玩家的openId数据需要做处理。
(我是按我要的json格式,将粉丝导成了1万条数据的一个json文件)
文件格式:
{ "info":[ {"openId":"ogVous494ltuNmO4zHb1seHeGLSk"} ] }
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; /** * 导出公众号粉丝 * @author wangfj */ public class ExportFansFromPublic { @SuppressWarnings({ "unchecked", "static-access","rawtypes"}) public static void main(String[] args) throws Exception { String token = AccessTokenKit.getTokenNew("appId", "app秘钥"); 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++){ //我这了定的50,是根据公众号粉丝数量来的,一个文件一万条,你们自己算 if(!"".equals(nextOpenId)){ params.put("next_openid", nextOpenId); } //根据appId,appSecret获取数据粉丝openId(1次1万条) //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("导出完毕"); break; } } } public static String writerJson(List<String> list,int fileName){ String nextOpenId = ""; FileWriter fw = null; PrintWriter out = null; try { // 指定生成txt的文件路径 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(); // 由于此处用到了缓冲流,如果数据量过大,不进行flush操作,某些数据将依旧 存在于内从中而不会写入文件,此问题一定要注意 } catch (Exception e) { e.printStackTrace(); } } return nextOpenId; } }