blob: b3c8f373145f10a3e6bc3b1262ba9f105ed197c5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
package utils;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonParseException;
import com.google.gson.JsonPrimitive;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
import java.lang.reflect.Type;
import org.joda.time.DateTime;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;
/**
* Converts a Twitter date string to a DateTime with timezone.
*
* @author Peter Wu
*/
public class TwitterDateAdapter implements JsonDeserializer<DateTime>,
JsonSerializer<DateTime> {
private static final DateTimeFormatter DATE_FORMATTER
= DateTimeFormat.forPattern("EEE MMM dd HH:mm:ss Z yyyy")
.withOffsetParsed();
@Override
public DateTime deserialize(JsonElement je, Type type,
JsonDeserializationContext jdc) throws JsonParseException {
JsonPrimitive jp;
if (!je.isJsonPrimitive() || !(jp = je.getAsJsonPrimitive()).isString()) {
throw new JsonParseException("Invalid date type");
}
String datetime = jp.getAsString();
try {
return DATE_FORMATTER.parseDateTime(datetime);
} catch (IllegalArgumentException ex) {
throw new JsonParseException("Invalid date: " + datetime, ex);
}
}
@Override
public JsonElement serialize(DateTime t, Type type,
JsonSerializationContext jsc) {
return new JsonPrimitive(formatDateTime(t));
}
public static String formatDateTime(DateTime t) {
return DATE_FORMATTER.print(t);
}
}
|