微信公众号开发之如何一键导出微信所有用户信息到Excel

/**
   * 将详细的用户信息保存到Excel
   * @param userInfos
   * @return
   */
  private File saveToExcel(List<UserInfo> userInfos){
    File file=null;
    try {
      WritableWorkbook wwb = null;
      
      // 创建可写入的Excel工作簿
      String fileName = "用户详细信息.xls";
      file=new File(fileName);
      //以fileName为文件名来创建一个Workbook
      wwb = Workbook.createWorkbook(file);

      // 创建工作表
      WritableSheet ws = wwb.createSheet("用户详细信息", 0);
      ws.setColumnView(0,8);
      ws.setColumnView(1,15);
      ws.setColumnView(2,50);
      ws.setColumnView(3,8);
      ws.setColumnView(4,10);
      ws.setColumnView(5,10);
      ws.setColumnView(6,10);
      ws.setColumnView(7,20);
      ws.setColumnView(8,50);
      ws.setColumnView(9,10);
      ws.setColumnView(10,30);
      ws.setColumnView(11,20);
      ws.setColumnView(12,20);
      
      ws.mergeCells(0,0,12,0);//合并第一列第一行到第七列第一行的所有单元格 
      WritableFont font1= new WritableFont(WritableFont.TIMES,16,WritableFont.BOLD); 
      WritableCellFormat format1=new WritableCellFormat(font1); 
      format1.setAlignment(jxl.format.Alignment.CENTRE);
      Label top= new Label(0, 0, "所有用户详细信息",format1);
      ws.addCell(top);
      
      //要插入到的Excel表格的行号，默认从0开始
      Label labelId= new Label(0, 1, "编号");
      Label labelnickname= new Label(1, 1, "用户的昵称");
      Label labelopenid= new Label(2, 1, "用户的标识");
      Label labelsex= new Label(3, 1, "性别");
      Label labelcountry= new Label(4,1, "所在国家");
      Label labelprovince= new Label(5,1, "所在省份");
      Label labelcity= new Label(6, 1, "所在城市");
      Label labellanguage= new Label(7,1, "用户的语言");
      Label labelheadimgurl= new Label(8,1, "用户头像");
      Label labelsubscribe= new Label(9, 1, "是否订阅");
      Label labelsubscribetime= new Label(10, 1, "关注时间");
      Label labelgroupid= new Label(11, 1, "所在的分组ID");
      Label labelremark= new Label(12, 1, "备注");
      ws.addCell(labelId);
      ws.addCell(labelnickname);
      ws.addCell(labelopenid);
      ws.addCell(labelsex);
      ws.addCell(labelcountry);
      ws.addCell(labelprovince);
      ws.addCell(labelcity);
      ws.addCell(labellanguage);
      ws.addCell(labelheadimgurl);
      ws.addCell(labelsubscribe);
      ws.addCell(labelsubscribetime);
      ws.addCell(labelgroupid);
      ws.addCell(labelremark);
      for (int i = 0; i < userInfos.size(); i++) {
          
          Label labelId_i= new Label(0, i+2, i+1+"");
          Label nickName= new Label(1, i+2, userInfos.get(i).getNickname());
          Label openid= new Label(2, i+2, userInfos.get(i).getOpenid());

        String sexStr=userInfos.get(i).getSex();
        //用户的性别，值为1时是男性，值为2时是女性，值为0时是未知
        if (StrKit.notBlank(sexStr)) {
          int sexInt=Integer.parseInt(sexStr);
          if (sexInt==1) {
            sexStr="男";
          }else if (sexInt==2) {
            sexStr="女";
          }
        }else {
          sexStr="未知";
        }

          Label sex= new Label(3, i+2, sexStr);
          Label country= new Label(4, i+2, userInfos.get(i).getCountry());
          Label province= new Label(5, i+2, userInfos.get(i).getProvince());
          Label city= new Label(6, i+2, userInfos.get(i).getCity());
          Label language= new Label(7, i+2, userInfos.get(i).getLanguage());
          Label headimgaeurl= new Label(8, i+2, userInfos.get(i).getHeadimgurl());

          Label subscribe= new Label(9, i+2, userInfos.get(i).getSubscribe().equals("1")?"已关注":"未关注");
        //获取关注时间
        String subscribe_time = userInfos.get(i).getSubscribe_time();

        if (StrKit.notBlank(subscribe_time)) {
          subscribe_time=sfg.format(new Date(Long.parseLong(subscribe_time) * 1000L));
        }
          Label subscribetime= new Label(10, i+2, subscribe_time);
          Label groupid= new Label(11, i+2, userInfos.get(i).getGroupid());
          Label remark= new Label(12, i+2, userInfos.get(i).getRemark());
          ws.addCell(labelId_i);
          ws.addCell(openid);
          ws.addCell(nickName);
          ws.addCell(sex);
          ws.addCell(country);
          ws.addCell(province);
          ws.addCell(city);
          ws.addCell(language);
          ws.addCell(headimgaeurl);
          ws.addCell(subscribe);
          ws.addCell(subscribetime);
          ws.addCell(groupid);
          ws.addCell(remark);
      }
     
      //写进文档
      wwb.write();
      // 关闭Excel工作簿对象
      wwb.close();
    } catch (Exception e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
    return file;
  }

/**
   * 获取所有的openid
   * @return
   */
  public List<String> getAllOpenId(){
    List<String> openIds = getOpenIds(null);
    return openIds;
  }

private List<String> getOpenIds(String next_openid){
    List<String> openIdList=new ArrayList<String>();
    ApiResult apiResult=UserApi.getFollowers(next_openid);
    String json=apiResult.getJson();
log.error("json:"+json);
    if (apiResult.isSucceed()) {
      JSONObject result = JSON.parseObject(json);
      next_openid = apiResult.getStr("next_openid");
      int count = apiResult.getInt("count");
      JSONObject openIdObject = result.getJSONObject("data");
      if (count>0) {
        JSONArray openids=openIdObject.getJSONArray("openid");
        for (int i = 0; i < openids.size(); i++) {
          openIdList.add(openids.getString(i));
        }
      }
      //下一页
      if (next_openid!=null&& !next_openid.equals("")) {
        List<String> list = getOpenIds(next_openid);
        openIdList.addAll(list);
      }
    }
    return openIdList;
  }

/**
   * 根据openId列表获取用户信息
   * @param allOpenId  
   * @return
   */
  private List<UserInfo> getAllUserInfo(List<String> allOpenId){
    List<UserInfo> userInfos = new ArrayList<UserInfo>();
    int total=allOpenId.size();
    UserConfig[] user_list=null;
    //开发者可通过该接口来批量获取用户基本信息。最多支持一次拉取100条。
    int temp=100;//一次获取100
    if (total>temp) {
      int page=0;//当前页面
      int count=total/100+(total%100>0?1:0);//总共获取多少次
      int index=0;
      while (page<count) {
        index=(temp*(page+1))>total?total:(temp*(page+1));
        System.out.println("/////////"+page*temp+" "+index);
        user_list=new UserConfig[index-(page*temp)];
        for (int i = page*temp; i <index; i++) {
          UserConfig config=new UserConfig();
          config.setLang(LangType.zh_CN);
          config.setOpenid(allOpenId.get(i));
          user_list[i-(page*temp)]=config;
        }
        GetUserInfo getUserInfo = new GetUserInfo();
        getUserInfo.setUser_list(user_list);
        String jsonGetUserInfo = JsonKit.toJson(getUserInfo);
        System.out.println("jsonGetUserInfo："+jsonGetUserInfo);
        
        ApiResult apiResult = UserApi.batchGetUserInfo(jsonGetUserInfo);
        
        String jsonResult = apiResult.getJson();
        //将json转化为对象
        List<UserInfo> userInfo = parseJsonToUserInfo(jsonResult);
        userInfos.addAll(userInfo);
        page++;
      }
    }else {
      user_list=new UserConfig[total];
      for (int i = 0; i < user_list.length; i++) {
        System.out.println(allOpenId.get(i));
        UserConfig config=new UserConfig();
        config.setLang(LangType.zh_CN);
        config.setOpenid(allOpenId.get(i));
        user_list[i]=config;
      }
      GetUserInfo getUserInfo = new GetUserInfo();
      getUserInfo.setUser_list(user_list);
      String jsonGetUserInfo = JsonKit.toJson(getUserInfo);
      
      
      ApiResult batchGetUserInfo = UserApi.batchGetUserInfo(jsonGetUserInfo);
      List<UserInfo> userInfo = parseJsonToUserInfo(batchGetUserInfo.getJson());
      userInfos.addAll(userInfo);
    }
    return userInfos;
  }

public void index(){
    List<UserInfo> allUserInfo = getAllUserInfo(getAllOpenId());
    
    if (!allUserInfo.isEmpty()) {
      ///下载userInfos
      File file = saveToExcel(allUserInfo);
      renderFile(file);
    }else {
      render("目前暂无用户...");
    }
  }