/**
* 获取已读新闻ID
*
* @return 格式：id1,id2,id3,...,idn
*/
public static String getReadNewsIds() {
Json[] queryRead = Db.queryRead();
String string = "";
for (int i = 0; i < queryRead.length; i++) {
string += queryRead[i].getString("newsid") + ",";
}
return string;
}
