forked from janbodnar/Java-Advanced
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathJsonParserEx.java
More file actions
78 lines (50 loc) · 2.27 KB
/
JsonParserEx.java
File metadata and controls
78 lines (50 loc) · 2.27 KB
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
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
package com.zetcode;
import javax.json.Json;
import javax.json.stream.JsonParser;
import java.io.IOException;
import java.net.URL;
public class JsonParserEx {
public static void main(String[] args) throws IOException {
var url = new URL("https://jsonplaceholder.typicode.com/posts");
try (var in = url.openStream(); var parser = Json.createParser(in)) {
// starting array
parser.next();
while (parser.hasNext()) {
// starting object
var event1 = parser.next();
if (event1 == JsonParser.Event.START_OBJECT) {
while (parser.hasNext()) {
var event = parser.next();
if (event == JsonParser.Event.KEY_NAME) {
switch (parser.getString()) {
case "userId":
parser.next();
System.out.printf("User Id: %d%n", parser.getInt());
break;
case "id":
parser.next();
System.out.printf("Post Id: %d%n", parser.getInt());
break;
case "title":
parser.next();
System.out.printf("Post title: %s%n", parser.getString());
break;
case "body":
parser.next();
if ("bar".equals(parser.getString())) {
System.out.println("baaaaaar");
}
System.out.printf("Post body: %s%n%n", parser.getString());
break;
default:
parser.next();
System.out.printf("Default: %s%n", parser.getString());
break;
}
}
}
}
}
}
}
}