从大型 json 对象中获取某些属性

Question

我收到一个巨大的 json 对象，我只需要从中获取两个属性。

json是这样来的

"{\r\n\"d\" : [\r\n{\r\n\"__metadata\": {\r\n\"uri\": \"http:\/\/xx.xx.xx\/AciApi.svc\/Port_Domestic(1191)\", \"type\": \"ACIModel.Port_Domestic\"\r\n}, \"PortID\": 1191, \"PortName\": \"PORTLAND\"\r\n}, {\r\n\"__metadata\": {\r\n\"uri\": \"http:\/\/xx.xx.xx\/AciApi.svc\/Port_Domestic(1192)\", \"type\": \"ACIModel.Port_Domestic\"\r\n}, \"PortID\": 1192, \"PortName\": \"BANGOR\"\r\n}, {\r\n\"__metadata\": {\r\n\"uri\": \"http:\/\/xx.xx.xx\/AciApi.svc\/Port_Domestic(1193)\", \"type\": \"ACIModel.Port_Domestic\"\r\n}, \"PortID\": 1193, \"PortName\": \"LUBEC\"\r\n}, {\r\n\"__metadata\": {\r\n\"uri\":....

我只需要 PortName 和 PortID 就可以了

0:{portCode:"",portName:""},
1:{portCode:"",portName:""},
...

Answer 1

var jsonString = "{\r\n\"d\" : [\r\n{\r\n\"__metadata\": {\r\n\"uri\": \"http:\/\/xx.xx.xx\/AciApi.svc\/Port_Domestic(1191)\", \"type\": \"ACIModel.Port_Domestic\"\r\n}, \"PortID\": 1191, \"PortName\": \"PORTLAND\"\r\n}, {\r\n\"__metadata\": {\r\n\"uri\": \"http:\/\/xx.xx.xx\/AciApi.svc\/Port_Domestic(1192)\", \"type\": \"ACIModel.Port_Domestic\"\r\n}, \"PortID\": 1192, \"PortName\": \"BANGOR\"\r\n}, {\r\n\"__metadata\": {\r\n\"uri\": \"http:\/\/xx.xx.xx\/AciApi.svc\/Port_Domestic(1193)\", \"type\": \"ACIModel.Port_Domestic\"\r\n}, \"PortID\": 1193, \"PortName\": \"LUBEC\"\r\n}]}"

var jsonArray = JSON.parse(jsonString).d;

var arrayOfObjectsWithOnlyThose2Properties = jsonArray.map(function(item){ 
   return {
     "portCode": item.PortCode,
     "portName": item.PortName
   }
});
    
console.log(arrayOfObjectsWithOnlyThose2Properties);