Java遍历json字符串取值的实例

JSONArray json = (JSONArray) JSONArray.parse(str);for (Object obj : json) {  JSONObject jo = (JSONObject)obj;  int status = jo.getInteger("status");  String message= jo.getString("message");  System.out.println("status---" + status + "---message---" + message);}

[  {    "status":0,    "tags":[      "check:ntp"    ],    "timestamp":1492151922.198,    "check":"datadog.agent.check_status",    "host_name":"song-2",    "message":null,    "id":2  },  {    "status":0,    "tags":null,    "timestamp":1492151922.2325,    "check":"datadog.agent.up",    "host_name":"song-2",    "message":null,    "id":5  }]

/**   * 主机详情中，异常错误信息的报错的平台服务状态和message   * @param str   * @return   * @throws Exception   */  private List<Map<String,String>> operStr(String str) throws Exception{    List<Map<String,String>> mList = new ArrayList<Map<String,String>>();//探针开启的服务名list    JSONArray json = (JSONArray) JSONArray.parse(str);    Map<String,Object> objMap = null;    Map<String,String> resMap = null;    for (Object obj : json) {      objMap = Obj2Map(obj);      @SuppressWarnings("unchecked")      Map<String,Object> mObj = (Map<String, Object>) objMap.get("map");      int status = (Integer) mObj.get("status");      if(status != 0){        resMap = new HashMap<String,String>();        switch (status) {        case 1:          resMap.put("status","WARNING");          break;        case 2:          resMap.put("status","ERROR");          break;        case 3:          resMap.put("status","CRIT");          break;        default:          break;        }        resMap.put("serviceName", ((String) mObj.get("check")).split("//.")[0]);        resMap.put("msg", (String)mObj.get("message"));        mList.add(resMap);      }    }    return mList;  }  /**   * object转map   * @param obj   * @return   * @throws Exception   */  public Map<String,Object> Obj2Map(Object obj) throws Exception{    if(obj == null){        return null;      }    Map<String,Object> map=new HashMap<String, Object>();    Field[] fields = obj.getClass().getDeclaredFields();    for(Field field:fields){      field.setAccessible(true);      map.put(field.getName(), field.get(obj));    }    return map;  }

/**   * 主机详情中，异常错误信息的报错的平台服务状态和message   * @param str   * @return   * @throws Exception   */  private List<Map<String,String>> operStr(String str) throws Exception{    List<Map<String,String>> mList = new ArrayList<Map<String,String>>();//探针开启的服务名list    JSONArray json = (JSONArray) JSONArray.parse(str);    Map<String,String> resMap = null;    for (Object obj : json) {      JSONObject jo = (JSONObject)obj;      int status = jo.getInteger("status");      if(status != 0){        resMap = new HashMap<String,String>();        switch (status) {        case 1:          resMap.put("status","WARNING");          break;        case 2:          resMap.put("status","ERROR");          break;        case 3:          resMap.put("status","CRIT");          break;        default:          break;        }        resMap.put("serviceName", (jo.getString("check")).split("//.")[0]);        resMap.put("msg", jo.getString("message"));        mList.add(resMap);      }    }    return mList;  }

[  [    "haproxy",    "haproxy",    0,    "ERROR",    "swdfghyjuikl",    {    }  ],  [    "gearmand",    "gearmand",    0,    "ERROR",    "'Found no valid connections in list: [<GearmanConnection localhost:4730 connected=False>]'",    {      "version":"[8, 4, 20]"    }  ]]

/**   * 通过查询agentChecksStr解析得到异常信息   * @param agentChecksStr   * @return    */  private List<Map<String,String>> getExceptInfoFromAgentChecks(String agentChecksStr){    List<Map<String,String>> mList = new ArrayList<Map<String,String>>();//探针开启的服务名list    //mList 主机详情中，异常错误信息的报错的平台服务状态和message    Object jsonArray = JSONArray.parse(agentChecksStr);    @SuppressWarnings("unchecked")    List<List<Object>> list= (List<List<Object>>) jsonArray;    Map<String,String> map = null;    for(int i=0;i<list.size();i++){      map = new HashMap<String,String>();      String status = list.get(i).get(3).toString();      if(!status.equals("OK")){        String serviceName = list.get(i).get(0).toString();        String msg = list.get(i).get(4).toString();        map.put("serviceName", serviceName);        map.put("status", status);        map.put("msg", msg);        mList.add(map);      }    }    return mList;  }

/**   * 通过查询agentChecksStr解析得到异常信息   * @param agentChecksStr   * @return    */  private List<Map<String,String>> getExceptInfoFromAgentChecks(String agentChecksStr){    //探针开启的服务名list    List<Map<String,String>> mList = new ArrayList<Map<String,String>>();    JSONArray jsonArray = (JSONArray) JSONArray.parse(agentChecksStr);    Map<String,String> map = null;    for (Object obj : jsonArray) {      map = new HashMap<String,String>();      JSONArray ja = (JSONArray)obj;      String status = ja.getString(3);      if(!status.equals("OK")){        String serviceName = ja.getString(0);        String msg = ja.getString(4);        map.put("serviceName", serviceName);        map.put("status", status);        map.put("msg", msg);        mList.add(map);      }    }    return mList;  }

import com.google.gson.Gson;import com.google.gson.JsonArray;import com.google.gson.JsonElement;import com.google.gson.JsonObject;import com.google.gson.JsonParser;public class MainTest {  public static void main(String[] args) throws Exception{    String jsonstr0 = "{/"alarmDetails/":{/"conditionDetails/":{/"alarmId/":7,/"alarmNodataNotifyTime/":1,/"alarmNowSeriesWaitTime/":2},/"conditionStatic/":{/"alarmId/":7,/"conditionAggregate/":/"avg/",/"conditionOperator/":1,/"conditionThresholdTime/":5,/"conditionThresholdValue/":/"123/"},/"metricDetails/":{/"alarmId/":7,/"metricAggregater/":/"avg/",/"metricBy/":/"host/",/"metricExcludeTag/":/"host:paas-177/",/"metricName/":/"system.cpu.user/",/"metricQ/":/"avg:system.cpu.user{#address:wuhan,!host:paas-177}by{host}/",/"metricTag/":/"#address:wuhan/"},/"notify/":[{/"alarmId/":7,/"notifyChannel/":5,/"notifyUserId/":1},{/"alarmId/":7,/"notifyChannel/":5,/"notifyUserId/":2}],/"view/":{/"alarmExpression/":/"avg(last_5m)avg:system.cpu.user{#address:wuhan,!host:paas-177}by{host}>123.0/",/"alarmId/":7,/"alarmLastValue/":/"UP/",/"alarmName/":/"static_metric/",/"alarmStatus/":1,/"alarmType/":2,/"alarmTypeJoin/":3,/"createTime/":/"2017-06-28 17:25:52.0/",/"createUserId/":1,/"isDisable/":false,/"lastAlarmTime/":/"2017-06-28 17:25:27.0/",/"metricName/":/"system.cpu.user/",/"metricTag/":/"#address:wuhan/",/"updateTime/":/"2017-06-29 15:49:18.0/"}},/"alarmId/":7,/"allMark/":{/"avg:system.cpu.user{host:cfeng-4,#address:wuhan,!host:paas-177}/":{/"changePutTime/":true,/"lastPutTsdbTime/":1499655343,/"lastSuccessCheckTime/":1499655349,/"series/":/"avg:system.cpu.user{host:cfeng-4,#address:wuhan,!host:paas-177}/",/"tagMap/":{/"host/":/"cfeng-4/",/"#address/":/"wuhan/",/"!host/":/"paas-177/"}}},/"joinType/":3,/"useMetricUnit/":/"percent/",/"validataDetails/":{/"status/":0,/"validataMerges/":[{/"alarmMarkDto/":{/"changePutTime/":true,/"lastPutTsdbTime/":1499655343,/"lastSuccessCheckTime/":1499655349,/"series/":/"avg:system.cpu.user{host:cfeng-4,#address:wuhan,!host:paas-177}/",/"tagMap/":{/"host/":/"cfeng-4/",/"#address/":/"wuhan/",/"!host/":/"paas-177/"}},/"status/":0,/"tag/":/"host:cfeng-4/",/"validataNodata/":{/"currentTime/":1499655349,/"isNodata/":false,/"lastSuccessCheckTime/":1499655349,/"series/":/"avg:system.cpu.user{host:cfeng-4,#address:wuhan,!host:paas-177}/",/"tag/":{/"host/":/"cfeng-4/",/"#address/":/"wuhan/",/"!host/":/"paas-177/"},/"thresholdTime/":60},/"validataStatic/":{/"converToThresholdValue/":123.0,/"end/":1499655343,/"intervalAggregator/":/"avg/",/"isAlart/":true,/"operator/":1,/"series/":/"avg:system.cpu.user{host:cfeng-4,#address:wuhan,!host:paas-177}/",/"start/":1499655043,/"sysUnit/":/"percent/",/"tag/":{/"#address/":/"wuhan/",/"host/":/"cfeng-4/",/"!host/":/"paas-177/"},/"thresholdTime/":300,/"thresholdValue/":/"123/",/"value/":5.715769243240357}}],/"validataTimeSeconds/":1499655349}}";    String jsonstr1 = "{/"alarmDetails/":{/"conditionDetails/":{/"alarmId/":7,/"alarmNodataNotifyTime/":1,/"alarmNowSeriesWaitTime/":2},/"conditionStatic/":{/"alarmId/":7,/"conditionAggregate/":/"avg/",/"conditionOperator/":1,/"conditionThresholdTime/":5,/"conditionThresholdValue/":/"123/"},/"metricDetails/":{/"alarmId/":7,/"metricAggregater/":/"avg/",/"metricBy/":/"host/",/"metricExcludeTag/":/"host:paas-177/",/"metricName/":/"system.cpu.user/",/"metricQ/":/"avg:system.cpu.user{#address:wuhan,!host:paas-177}by{host}/",/"metricTag/":/"#address:wuhan/"},/"notify/":[{/"alarmId/":7,/"notifyChannel/":5,/"notifyUserId/":1},{/"alarmId/":7,/"notifyChannel/":5,/"notifyUserId/":2}],/"view/":{/"alarmExpression/":/"avg(last_5m)avg:system.cpu.user{#address:wuhan,!host:paas-177}by{host}>123.0/",/"alarmId/":7,/"alarmLastValue/":/"UP/",/"alarmName/":/"static_metric/",/"alarmStatus/":1,/"alarmType/":2,/"alarmTypeJoin/":3,/"createTime/":/"2017-06-28 17:25:52.0/",/"createUserId/":1,/"isDisable/":false,/"lastAlarmTime/":/"2017-06-28 17:25:27.0/",/"metricName/":/"system.cpu.user/",/"metricTag/":/"#address:wuhan/",/"updateTime/":/"2017-06-29 15:49:18.0/"}},/"alarmId/":7,/"allMark/":{/"avg:system.cpu.user{host:cfeng-4,#address:wuhan,!host:paas-177}/":{/"changePutTime/":true,/"lastPutTsdbTime/":1499655374,/"lastSuccessCheckTime/":1499655379,/"series/":/"avg:system.cpu.user{host:cfeng-4,#address:wuhan,!host:paas-177}/",/"tagMap/":{/"host/":/"cfeng-4/",/"#address/":/"wuhan/",/"!host/":/"paas-177/"}}},/"joinType/":3,/"useMetricUnit/":/"percent/",/"validataDetails/":{/"status/":0,/"validataMerges/":[{/"alarmMarkDto/":{/"changePutTime/":true,/"lastPutTsdbTime/":1499655374,/"lastSuccessCheckTime/":1499655379,/"series/":/"avg:system.cpu.user{host:cfeng-4,#address:wuhan,!host:paas-177}/",/"tagMap/":{/"host/":/"cfeng-4/",/"#address/":/"wuhan/",/"!host/":/"paas-177/"}},/"status/":0,/"tag/":/"host:cfeng-4/",/"validataNodata/":{/"currentTime/":1499655379,/"isNodata/":false,/"lastSuccessCheckTime/":1499655379,/"series/":/"avg:system.cpu.user{host:cfeng-4,#address:wuhan,!host:paas-177}/",/"tag/":{/"host/":/"cfeng-4/",/"#address/":/"wuhan/",/"!host/":/"paas-177/"},/"thresholdTime/":60},/"validataStatic/":{/"converToThresholdValue/":123.0,/"end/":1499655374,/"intervalAggregator/":/"avg/",/"isAlart/":true,/"operator/":1,/"series/":/"avg:system.cpu.user{host:cfeng-4,#address:wuhan,!host:paas-177}/",/"start/":1499655074,/"sysUnit/":/"percent/",/"tag/":{/"#address/":/"wuhan/",/"host/":/"cfeng-4/",/"!host/":/"paas-177/"},/"thresholdTime/":300,/"thresholdValue/":/"123/",/"value/":5.089640821729388}}],/"validataTimeSeconds/":1499655379}}";    Set<String> set = new HashSet<String>();    set.add(jsonstr0);    set.add(jsonstr1);    Gson gs = new Gson();    List<Object> eventList = new ArrayList<Object>();    for (String str : set) {      JsonObject returnData = new JsonParser().parse(str).getAsJsonObject();      JsonObject ad = returnData.get("alarmDetails").getAsJsonObject();      JsonObject vd = returnData.get("validataDetails").getAsJsonObject();      JsonArray vm = vd.get("validataMerges").getAsJsonArray();      JsonArray nf = ad.get("notify").getAsJsonArray();      JsonObject v = ad.get("view").getAsJsonObject();      String validataTimeSeconds = vd.get("validataTimeSeconds").toString();      for (JsonElement je : vm) {        je.getAsJsonObject().add("view", v);        je.getAsJsonObject().add("notify", nf);        je.getAsJsonObject().addProperty("validataTimeSeconds", Long.parseLong(validataTimeSeconds));        eventList.add(je);      }    }    for (Object obj : eventList) {      String inParam = gs.toJson(obj);      System.out.println(inParam);    }    System.out.println(gs.toJson(eventList));  }}

//获取设备信息（只有硬件设备和虚拟设备有）HashMap<String,String> paramMap = new HashMap<String,String>();paramMap.put("hostid", mHostId);paramMap.put("ptype", dto.getPtype());paramMap.put("type_flag", dto.getTypeFlag());paramMap.put("api_key", apikey);String resStr = HttpUtils.get(DEVICE_INFO_URL, paramMap);JSONObject jobj = JSON.parseObject(resStr);JSONObject obj = (JSONObject)jobj.get("result");if(obj.size() != 0){  String restr = jobj.get("result").toString();  DeviceInfoDto deviceInfoDto = new Gson().fromJson(restr, DeviceInfoDto.class);  dto.setDeviceInfo(deviceInfoDto);}

List<Map<Integer, Long>> result = new ArrayList<Map<Integer, Long>>();Map<String, String> timeMap = null;List<Map<String, String>> timeArr = new ArrayList<Map<String, String>>();for (int j = 0; j < result.size(); j++) {timeMap = new HashMap<String, String>();if (j == result.size() - 1) {  timeMap.put("startTime",result.get(j).get(result.get(j).keySet().iterator().next()) + "");  timeMap.put("endTime", System.currentTimeMillis() + "");} else {  timeMap.put("startTime", result.get(j).get(result.get(j).keySet().iterator().next()) + "");  timeMap.put("endTime", (result.get(j+1).get(result.get(j+1).keySet().iterator().next()) - 1) + "");}timeMap.put("hostName", "*");//1:info,2:error,3:success,4:warningInteger key = result.get(j).keySet().iterator().next();if (key == 1) {  timeMap.put("status", "info");} else if (key == 2) {  timeMap.put("status", "error");} else if (key == 3) {  timeMap.put("status", "success");} else if (key == 4) {  timeMap.put("status", "warning");} timeArr.add(timeMap);}