Mind , due to operational needs, two units need to interface data docking, the unit needs to send a data string to json unit 2. However units to json data fields are not sent in, listen to them explain that customers lose those fields on the system they will take over those fields, and those customers do not enter the field, they will default without. A unit requires two units, such a field is not detected with the default value is empty!
So as a unit Second, we need to find ways to detect which fields a unit did not bring over. At first way is to think immediately treated with unusual circumstances, as when the program itself is tested, they reported not found, so the exception handling with it excusable. . . If, after using the exception, thought for a moment only capture not found, there will finally captured in this field directly blank ok.
Then the question is, of abnormality tried, the finally processed too bad; so want another method of use, with a the json containsKey () function to determine whether the presence of the Key json string, i.e., whether there this field; of course, other functions can also be judged, according to the introduction of the json own package.
Here are my own situation:
First, I import json package:
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;code show as below:
/**
* 9903接口解析json数据并且将数据进行入库
*
* @author syp
* @time 2019年7月3日11:49:02
*/
public String dateRepository(String jsonData) {
Log4jBean.logger.info("开始处理入库程序!");
ReadConfig.PullConfigXml(); //启动配置文件
DBUtils db = new DBUtils();
JSONObject json=new JSONObject();
String jsonStr=jsonData.substring(44, jsonData.length());
JSONObject jsonObject = JSONObject.fromObject(jsonStr);
JSONObject jsonCard=jsonObject.getJSONObject("cardid_info")
JSONObject jsonObu = jsonObject.getJSONObject("obu_info");
JSONObject jsonUser=jsonObject.getJSONObject("user_info");
JSONObject jsonCar = jsonObject.getJSONObject("car_info");
//准备将所有json数据信息入开卡集合表ETC_OPEN_CARD_COLLECTION
JSONObject jsonAccno = jsonObject.getJSONObject("accno_info");
String allSql = "insert into ETC_OPEN_CARD_COLLECTION(ACCOUNTID,LINKMOBILE,ACCNO_USERNAME,CERTSN,POSID,GENTIME,TRX_SERNO,EMPLOYEEID,ORG_TRX_SERNO,CARD_ID,CARDTYPE,CARD_BRAND,CARD_MODEL,AGENCYID,CARD_USERID,VEHICLEID,ENABLETIME,EXPIRETIME,ISSUEDTYPE,CHANNELID,ISSUEDTIME,CARD_STATUS,STATUSCHANGETIME,CARD_OPERATION,OBU_ID,OBU_BRAND,OBU_MODEL,OBU_USERID,OBU_VEHICLEID,OBU_ENABLETIME,OBU_EXPIRETIME,REGISTEREDTYPE,REGISTEREDCHANNELID,REGISTEREDTIME,INSTALLTYPE,INSTALLCHANNELID,INSTALLTIME,OBU_STATUS,OBU_STATUSCHANGETIME,OBU_OPERATION,USER_ID,USERTYPE,USER_NAME,USERIDTYPE,USERIDNUM,USER_TEL,USER_ADDRESS,USER_REGISTEREDTYPE,USER_CHANNELID,USER_REGISTEREDTIME,DEPARTMENT,AGENTNAME,AGENTIDTYPE,AGENTIDNUM,USER_STATUS,USER_STATUSCHANGETIME,USER_OPERATION,CAR_ID,CAR_TYPE,CAR_USERID,OWNERNAME,OWNERIDTYPE,OWNERIDNUM,OWNERTEL,CAR_ADDRESS,CAR_CONTACT,CAR_REGISTEREDTYPE,CAR_CHANNELID,CAR_REGISTEREDTIME,VEHICLETYPE,VEHICLEMODEL,USECHARACTER,VIN,ENGINENUM,REGISTERDATE,ISSUEDATE,FILENUM,APPROVEDCOUNT,TOTALMASS,MAINTENANCEMASS,PERMITTEDWEIGHT,OUTSIDEDIMENSIONS,PERMITTEDTOWWEIGHT,TESTRECORD,WHEELCOUNT,AXLECOUNT,AXLEDISTANCE,AXISTYPE,CAR_OPERATION) values('"
+ (jsonAccno.containsKey("accountid")?jsonAccno.getString("accountid"):"")
+ "','"
+ (jsonAccno.containsKey("linkmobile")?jsonAccno.getString("linkmobile"):"")
+ "','"
+ (jsonAccno.containsKey("username")?jsonAccno.getString("username"):"")
+ "','"
+ (jsonAccno.containsKey("certsn")?jsonAccno.getString("certsn"):"")
+ "','"
+ (jsonAccno.containsKey("posid")?jsonAccno.getString("posid"):"")
+ "','"
+ (jsonAccno.containsKey("gentime")?jsonAccno.getString("gentime"):"")
+ "','"
+ (jsonAccno.containsKey("trx_serno")?jsonAccno.getString("trx_serno"):"")
+ "','"
+ (jsonAccno.containsKey("employeeid")?jsonAccno.getString("employeeid"):"")
+ "','"
+ (jsonAccno.containsKey("org_trx_serno")?jsonAccno.getString("org_trx_serno"):"")
+ "','"
+ (jsonCard.containsKey("id")?jsonCard.getString("id"):"")
+ "','"
+ (jsonCard.containsKey("cardType")?jsonCard.getString("cardType"):"")
+ "','"
+ (jsonCard.containsKey("brand")?jsonCard.getString("brand"):"")
+ "','"
+ (jsonCard.containsKey("model")?jsonCard.getString("model"):"")
+ "','"
+ (jsonCard.containsKey("agencyId")?jsonCard.getString("agencyId"):"")
+ "','"
+ (jsonCard.containsKey("userId")?jsonCard.getString("userId"):"")
+ "','"
+ (jsonCard.containsKey("vehicleId")?jsonCard.getString("vehicleId"):"")
+ "','"
+ (jsonCard.containsKey("enableTime")?jsonCard.getString("enableTime"):"")
+ "','"
+ (jsonCard.containsKey("expireTime")?jsonCard.getString("expireTime"):"")
+ "','"
+ (jsonCard.containsKey("issuedType")?jsonCard.getString("issuedType"):"")
+ "','"
+ (jsonCard.containsKey("channelId")?jsonCard.getString("channelId"):"")
+ "','"
+ (jsonCard.containsKey("issuedTime")?jsonCard.getString("issuedTime"):"")
+ "','"
+ (jsonCard.containsKey("status")?jsonCard.getString("status"):"")
+ "','"
+ (jsonCard.containsKey("statusChangeTime")?jsonCard.getString("statusChangeTime"):"")
+ "','"
+ (jsonCard.containsKey("operation")?jsonCard.getString("operation"):"")
+ "','"
+ (jsonObu.containsKey("id")?jsonObu.getString("id"):"")
+ "','"
+ (jsonObu.containsKey("brand")?jsonObu.getString("brand"):"")
+ "','"
+ (jsonObu.containsKey("model")?jsonObu.getString("model"):"")
+ "','"
+ (jsonObu.containsKey("userId")?jsonObu.getString("userId"):"")
+ "','"
+ (jsonObu.containsKey("vehicleId")?jsonObu.getString("vehicleId"):"")
+ "','"
+ (jsonObu.containsKey("enableTime")?jsonObu.getString("enableTime"):"")
+ "','"
+ (jsonObu.containsKey("expireTime")?jsonObu.getString("expireTime"):"")
+ "','"
+ (jsonObu.containsKey("registeredType")?jsonObu.getString("registeredType"):"")
+ "','"
+ (jsonObu.containsKey("registeredChannelId")?jsonObu.getString("registeredChannelId"):"")
+ "','"
+ (jsonObu.containsKey("registeredTime")?jsonObu.getString("registeredTime"):"")
+ "','"
+ (jsonObu.containsKey("installType")?jsonObu.getString("installType"):"")
+ "','"
+ (jsonObu.containsKey("installChannelId")?jsonObu.getString("installChannelId"):"")
+ "','"
+ (jsonObu.containsKey("installTime")?jsonObu.getString("installTime"):"")
+ "','"
+ (jsonObu.containsKey("status")?jsonObu.getString("status"):"")
+ "','"
+ (jsonObu.containsKey("statusChangeTime")?jsonObu.getString("statusChangeTime"):"")
+ "','"
+ (jsonObu.containsKey("operation")?jsonObu.getString("operation"):"")
+ "','"
+ (jsonUser.containsKey("id")?jsonUser.getString("id"):"")
+ "','"
+ (jsonUser.containsKey("userType")?jsonUser.getString("userType"):"")
+ "','"
+ (jsonUser.containsKey("userName")?jsonUser.getString("userName"):"")
+ "','"
+ (jsonUser.containsKey("userIdType")?jsonUser.getString("userIdType"):"")
+ "','"
+ (jsonUser.containsKey("userIdNum")?jsonUser.getString("userIdNum"):"")
+ "','"
+ (jsonUser.containsKey("tel")?jsonUser.getString("tel"):"")
+ "','"
+ (jsonUser.containsKey("address")?jsonUser.getString("address"):"")
+ "','"
+ (jsonUser.containsKey("registeredType")?jsonUser.getString("registeredType"):"")
+ "','"
+ (jsonUser.containsKey("channelId")?jsonUser.getString("channelId"):"")
+ "','"
+ (jsonUser.containsKey("registeredTime")?jsonUser.getString("registeredTime"):"")
+ "','"
+ (jsonUser.containsKey("department")?jsonUser.getString("department"):"")
+ "','"
+ (jsonUser.containsKey("agentName")?jsonUser.getString("agentName"):"")
+ "','"
+ (jsonUser.containsKey("agentIdType")?jsonUser.getString("agentIdType"):"")
+ "','"
+ (jsonUser.containsKey("agentIdNum")?jsonUser.getString("agentIdNum"):"")
+ "','"
+ (jsonUser.containsKey("status")?jsonUser.getString("status"):"")
+ "','"
+ (jsonUser.containsKey("statusChangeTime")?jsonUser.getString("statusChangeTime"):"")
+ "','"
+ (jsonUser.containsKey("operation")?jsonUser.getString("operation"):"")
+ "','"
+ (jsonCar.containsKey("id")?jsonCar.getString("id"):"")
+ "','"
+ (jsonCar.containsKey("type")?jsonCar.getString("type"):"")
+ "','"
+ (jsonCar.containsKey("userId")?jsonCar.getString("userId"):"")
+ "','"+
(jsonCar.containsKey("ownerName")?jsonCar.getString("ownerName"):"")
+ "','"+
(jsonCar.containsKey("ownerIdType")?jsonCar.getString("ownerIdType"):"")
+ "','"+
(jsonCar.containsKey("ownerIdNum")?jsonCar.getString("ownerIdNum"):"")
+ "','"+
(jsonCar.containsKey("ownerTel")?jsonCar.getString("ownerTel"):"")
+ "','"+
(jsonCar.containsKey("address")?jsonCar.getString("address"):"")
+ "','"+
(jsonCar.containsKey("contact")?jsonCar.getString("contact"):"")
+ "','"+
(jsonCar.containsKey("registeredType")?jsonCar.getString("registeredType"):"")
+ "','"+
(jsonCar.containsKey("channelId")?jsonCar.getString("channelId"):"")
+ "','"+
(jsonCar.containsKey("registeredTime")?jsonCar.getString("registeredTime"):"")
+ "','"+
(jsonCar.containsKey("vehicleType")?jsonCar.getString("vehicleType"):"")
+ "','"+
(jsonCar.containsKey("vehicleModel")?jsonCar.getString("vehicleModel"):"")
+ "','"+
(jsonCar.containsKey("useCharacter")?jsonCar.getString("useCharacter"):"")
+ "','"+
(jsonCar.containsKey("VIN")?jsonCar.getString("VIN"):"")
+ "','"+
(jsonCar.containsKey("engineNum")?jsonCar.getString("engineNum"):"")
+ "','"+
(jsonCar.containsKey("registerDate")?jsonCar.getString("registerDate"):"")
+ "','"+
(jsonCar.containsKey("issueDate")?jsonCar.getString("issueDate"):"")
+ "','"+
(jsonCar.containsKey("fileNum")?jsonCar.getString("fileNum"):"")
+ "','"+
(jsonCar.containsKey("approvedCount")?jsonCar.getString("approvedCount"):"")
+ "','"+
(jsonCar.containsKey("totalMass")?jsonCar.getString("totalMass"):"")
+ "','"+
(jsonCar.containsKey("maintenanceMass")?jsonCar.getString("maintenanceMass"):"")
+ "','"+
(jsonCar.containsKey("permittedWeight")?jsonCar.getString("permittedWeight"):"")
+ "','"+
(jsonCar.containsKey("outsideDimensions")?jsonCar.getString("outsideDimensions"):"")
+ "','"+
(jsonCar.containsKey("permittedTowWeight")?jsonCar.getString("permittedTowWeight"):"")
+ "','"+
(jsonCar.containsKey("testRecord")?jsonCar.getString("testRecord"):"")
+ "','"+
(jsonCar.containsKey("wheelCount")?jsonCar.getString("wheelCount"):"")
+ "','"+
(jsonCar.containsKey("axleCount")?jsonCar.getString("axleCount"):"")
+ "','"+
(jsonCar.containsKey("axleDistance")?jsonCar.getString("axleDistance"):"")
+ "','"+
(jsonCar.containsKey("axisType")?jsonCar.getString("axisType"):"")
+ "','"+
(jsonCar.containsKey("operation")?jsonCar.getString("operation"):"")
+ "')";
int allParam = db.updateMethod(allSql, null);
if (allParam > 0) {
Log4jBean.logger.info("开卡集合数据写入开卡集合表成功!");
json.put("return_msg", "处理成功!");
json.put("return_code", "0");
} else {
Log4jBean.logger.error("开卡集合数据写入开卡集合表失败!");
json.put("return_msg", "处理失败!");
json.put("return_code", "-1");
}
return json.toString();
}It can be seen through the code, each field with containsKey () function to do the deal, so do not be afraid to come first serve Unit of j'son string which can not be found in the field;
Finally, tests have been successfully put in storage. .