问题描述
我正在使用Retrofit来获取JSON回复。
I am using Retrofit to get a JSON reply.
以下是我实施的部分内容 -
Here are parts of my implementation -
@GET("/api/report/list")
Observable<Bills> listBill(@Query("employee_id") String employeeID);
而班级票据是 -
public static class Bills {
@SerializedName("report")
public ArrayList<BillItem> billItems;
}
BillItem
类如下 -
public static class BillItem {
@SerializedName("id")
Integer entryID;
@SerializedName("employee_id")
Integer employeeDBID;
@SerializedName("type")
String type;
@SerializedName("subtype")
String subtype;
@SerializedName("date")
String date;
@SerializedName("to")
String to;
@SerializedName("from")
String from;
@SerializedName("amount")
Double amount;
@SerializedName("location")
String location;
@SerializedName("remark")
String remark;
@SerializedName("ispaid")
String isPaid;
@SerializedName("created_at")
String createdAt;
@SerializedName("updated_at")
String updateAt;
}
问题是REST API有时会返回 BillItem 对象,但有时它只是键值
对。如何处理这种情况?
The problem is sometimes the REST API returns an Array of BillItem
objects, but sometimes it is just a key-value
pair. How does one handle such a situation?
收到此响应后,一切正常,因为 JSONArray
被映射到 ArrayList< BillItem>
-
When this response is received, everything works fine because the JSONArray
gets mapped to the ArrayList<BillItem>
-
{
"emp":{
"id":41,
"name":"",
"email":"",
"created_at":"2016-02-01 10:36:38",
"updated_at":"2016-02-01 10:36:38"
},
"report":[
{
"id":175,
"employee_id":41,
"type":"Travel",
"subtype":"Car",
"date":"2016-02-02 00:00:00",
"to":"gaha",
"from":"hshsj",
"amount":"64",
"location":"",
"remark":"shhs",
"ispaid":false,
"created_at":"2016-02-01 13:52:52",
"updated_at":"2016-02-01 13:52:52"
},
{
"id":179,
"employee_id":41,
"type":"Travel",
"subtype":"Car",
"date":"2016-02-01 00:00:00",
"to":"Gsh",
"from":"Dgdh",
"amount":"7646",
"location":"",
"remark":"Shsh",
"ispaid":false,
"created_at":"2016-02-01 14:39:48",
"updated_at":"2016-02-01 14:39:48"
}
]
}
但是,有时响应是这样的,它给出了 JsonSyntaxException
-
But, sometimes the response is this, and it gives a JsonSyntaxException
-
{
"emp":{
"id":41,
"name":"",
"email":"",
"created_at":"2016-02-01 10:36:38",
"updated_at":"2016-02-01 10:36:38"
},
"report":{
"1":{
"id":175,
"employee_id":41,
"type":"Travel",
"subtype":"Car",
"date":"2016-02-02 00:00:00",
"to":"gaha",
"from":"hshsj",
"amount":"64",
"location":"",
"remark":"shhs",
"ispaid":false,
"created_at":"2016-02-01 13:52:52",
"updated_at":"2016-02-01 13:52:52"
},
"2":{
"id":179,
"employee_id":41,
"type":"Travel",
"subtype":"Car",":"2016-02-01 00:00:00",
"to":"Gsh",
"from":"Dgdh",
"amount":"7646",
"location":"",
"remark":"Shsh",
"ispaid":false,
"created_at":"2016-02-01 14:39:48",
"updated_at":"2016-02-01 14:39:48"
},
"0":{
"id":181,
"employee_id":41,
"type":"Travel",
"subtype":"Car",
"date":"2016-02-01 00:00:00",
"to":"ggg",
"from":"vg",
"amount":"0",
"location":"",
"remark":"cvv",
"ispaid":false,
"created_at":"2016-02-01 17:43:43",
"updated_at":"2016-02-01 17:43:43"
},
"3":{
"id":182,
"employee_id":41,
"type":"Travel",
"subtype":"Car",
"date":"2016-02-01 00:00:00",
"to":"Haha",
"from":"Ahah",
"amount":"0",
"location":"",
"remark":"Ahah",
"ispaid":false,
"created_at":"2016-02-01 17:53:58",
"updated_at":"2016-02-01 17:53:58"
}
}
}
如何处理这样的回复?
推荐答案
当你使用Gson反序列化器时,你可以检查JsonElement中的类型:
When you use a Gson deserializer you can check the type in the JsonElement:
Gson gson = new GsonBuilder()
.registerTypeAdapter(BillItem.class, new BillItemDeserializer())
.registerTypeAdapter(Bills.class, new BillsDeserializer())
.create();
RestAdapter.Builder builder = new RestAdapter.Builder()
//...
.setConverter(new GsonConverter(gson));
public class BillsDeserializer implements JsonDeserializer<StringList> {
public Bills deserialize(JsonElement json, Type typeOfT,
JsonDeserializationContext context) throws JsonParseException {
BillItemList value = new BillItemList();
if (json.isJsonArray()) {
for (JsonElement element : json.getAsJsonArray()) {
value.add(gson.fromJson(element, BillItem.class));
}
} else {
value.add(gson.fromJson(element, BillItem.class));
}
return value;
}
}
参见示例:
这篇关于当回复有时是一个对象而有时是一个数组时,如何在使用改进时解析JSON回复?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!