如何在Android中使用Gson反序列化.NET JsonResult DateTime格式? [英] How to deserialise .NET JsonResult DateTime format with Gson in Android?
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问题描述
我以这种格式从服务器返回JSON:
{
StartDate:/ Date (1451593800000)/,
EndDate:/ Date(1483216200000)/
}
在我的POJO中:
public class Data {
java.util.Date startDate;
java.util.Date endDate;
}
和我的Gson对象:
private final Gson gson = new GsonBuilder()
.serializeNulls()
.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE)
.create();
当我想解析这个JSON时,我得到这个错误:
无法解析的日期:/ Date(1483216200000)/(at offset 0)
使用Gson在Android中解析这样的JSON的正确方法是什么?
解决方案
做了一些这样的事情,创建一个日期序列化程序并将其注册到GsonBuilder。
$ p $
import java.lang.reflect.Type ;
import java.util.Date;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonParseException;
public class DateDeserializer实现JsonDeserializer< Date> {
@Override
public Date deserialize(JsonElement element,Type arg1,
JsonDeserializationContext arg2)throws JsonParseException {
String data = element.getAsString();
data = data.replace(/ Date(,);
data = data.replace()/,);
try {
return new Date(Long.parseLong(data));
} catch(Exception e){
System.out.println(无法解析日期,因为:);
返回null;
$ b
注册Gson Builder p>
Gson gson = new GsonBuilder()。serializeNulls()
.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE)
.registerTypeAdapter (Date.class,new DateDeserializer())。create();
I have a JSON returned from server in this format:
{
"StartDate": "/Date(1451593800000)/",
"EndDate": "/Date(1483216200000)/"
}
And in my POJO:
public class Data {
java.util.Date startDate;
java.util.Date endDate;
}
And my Gson object:
private final Gson gson = new GsonBuilder()
.serializeNulls()
.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE)
.create();
When I wanted to parse this JSON I get this error:
Unparseable date: "/Date(1483216200000)/" (at offset 0)
What is the right way to parse such JSON in Android with Gson?
解决方案
I have done some thing like this, Create a Date Serializer and register it to the GsonBuilder.
import java.lang.reflect.Type;
import java.util.Date;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonParseException;
public class DateDeserializer implements JsonDeserializer<Date> {
@Override
public Date deserialize(JsonElement element, Type arg1,
JsonDeserializationContext arg2) throws JsonParseException {
String data = element.getAsString();
data = data.replace("/Date(", "");
data = data.replace(")/", "");
try {
return new Date(Long.parseLong(data));
} catch (Exception e) {
System.out.println("Failed to parse Date due to:");
return null;
}
}
}
Registering with Gson Builder
Gson gson = new GsonBuilder().serializeNulls()
.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE)
.registerTypeAdapter(Date.class, new DateDeserializer()).create();
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