import com.alibaba.fastjson.JSON;  import com.alibaba.fastjson.JSONArray;  import com.alibaba.fastjson.JSONObject;  import io.swagger.models.auth.In;  import java.io.IOException;  import java.security.KeyManagementException;  import java.security.NoSuchAlgorithmException;  import java.util.Iterator;    /**  * Created by Administrator on 2017/4/21.  */  public class test {        public static void main(String[] args) throws Exception {                  //第一种格式         /**         * [             {                 "data ": [                     {                         "building_id ": "*** ",                         "building_num ": "** ",                         "door_name ": "** ",                         "electric ": "** ",                         "room_name ": "** "                     }                 ],                 "success ": true                 }             ]         */          String s="[{\"success\":true,\"data\":[{\"building_id\":\"***\",\"building_num\":\"**\",\"room_name\":\"**\",\"door_name\":\"**\",\"electric\":\"**\"}]}]" ;          String b= s.substring(0,s.length()-1);          String c=b.substring(1, b.length());          System.out.println(b+"b___");          JSONObject jsonx = JSON.parseObject(c);          JSONArray ja = jsonx.getJSONArray("data");          for (int i = 0; i < ja.size(); i++) {              JSONObject jo = ja.getJSONObject(i);              String building_id = jo.getString("building_id");              System.out.println(building_id+"building_id>>>>>");          }           //第二种格式         /**          * [                 {                     "password ": "*1234567890 ",                     "success ": "true "                 }             ]          */          String s="[{\"success\":\"true\",\"password\":\"*1234567890\"}]";          String b= s.substring(0,s.length()-1);          String c=b.substring(1, b.length());          System.out.println(c+"c___");          JSONObject reagobj = JSONObject.fromObject(c);          String name = reagobj.getString("password");          System.out.println(name+"name,,,,,,");          String password = jm.getString("password");          System.out.println(password);          System.out.println("看看有没有值"+password);                        //第三种格式          /**         * {             "data ": {                 "access_token ": "5a7040ccf66bafd06acd39b6f61c19230eaba426755509646d6da23ddd9fb206 ",                 "expires_second ": 36000             },             "rlt_code ": "HH0000 ",             "rlt_msg ": "成功 "         }          */          String res="{\"data\":{\"access_token\":\"5a7040ccf66bafd06acd39b6f61c19230eaba426755509646d6da23ddd9fb206\",\"expires_second\":36000},\"rlt_code\":\"HH0000\",\"rlt_msg\":\"成功\"}";          JSONObject jsonObject= JSON.parseObject(res);          String data = jsonObject.getString("data");          JSONObject jsondata= JSON.parseObject(data);          String token = jsondata.getString("access_token");                      //第四种格式           /**          * {              "data ":                 {                      "total ":23,                      "start ":0,                      "total_page ":3,                      "rows ":                         [                             { "op_way ": "3 ", "user_mobile ": "15321918571 ", "op_time ":1493881391976, "pwd_no ":30},                             { "op_way ": "1 ", "op_time ":1493880995000, "pwd_no ":31}                         ],                      "current_page ":1,                      "page_size ":10                 },              "rlt_code ": "HH0000 ",             "rlt_msg ": "成功 "         }         */          String res="{\"data\":{\"total\":23,\"start\":0,\"total_page\":3,\"rows\":[{\"op_way\":\"1\",\"op_time\":1493884964000,\"pwd_no\":31},{\"op_way\":\"3\",\"user_mobile\":\"18518517491\",\"op_time\":1493884615032,\"pwd_no\":30},{\"op_way\":\"3\",\"user_mobile\":\"18518517491\",\"op_time\":1493883836552,\"pwd_no\":30},{\"op_way\":\"1\",\"op_time\":1493883294000,\"pwd_no\":31},{\"op_way\":\"1\",\"op_time\":1493883256000,\"pwd_no\":31},{\"op_way\":\"3\",\"user_mobile\":\"15321918571\",\"op_time\":1493883015371,\"pwd_no\":30},{\"op_way\":\"1\",\"op_time\":1493882007000,\"pwd_no\":31},{\"op_way\":\"3\",\"user_mobile\":\"15321918571\",\"op_time\":1493881498520,\"pwd_no\":30},{\"op_way\":\"3\",\"user_mobile\":\"15321918571\",\"op_time\":1493881391976,\"pwd_no\":30},{\"op_way\":\"1\",\"op_time\":1493880995000,\"pwd_no\":31}],\"current_page\":1,\"page_size\":10},\"rlt_code\":\"HH0000\",\"rlt_msg\":\"成功\"}";          JSONObject jsonObject= JSON.parseObject(res);          String data = jsonObject.getString("data");          JSONObject jsonObjects= JSON.parseObject(data);          JSONArray ja = jsonObjects.getJSONArray("rows");          for (int i = 0; i < ja.size(); i++) {              JSONObject jo = ja.getJSONObject(i);              String op_way = jo.getString("op_way");              String op_time = jo.getString("op_time");              SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");              long lt = new Long(op_time);              Date date = new Date(lt);              res = simpleDateFormat.format(date);              String pwd_no = jo.getString("pwd_no");              String user_mobile = jo.getString("user_mobile");              System.out.println(op_way+res+pwd_no+user_mobile+"------------");          }                     }        }