blob: 52ff5511026b9c92ce8bd20e2d19bb44f8b13a31 (
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
52
53
54
55
56
57
58
59
|
GeoJson POJOs for Jackson
=========================
A small package of all GeoJson POJOs (Plain Old Java Objects) for serializing and
deserializing of objects via JSON Jackson Parser.
Usage
-----
If you know what kind of object you expect from a GeoJson file you can directly read it like this:
```java
FeatureCollection featureCollection =
new ObjectMapper().readValue(inputStream, FeatureCollection.class);
```
If you want to read any GeoJson file read the value as GeoJsonObject and then test for the contents via instanceOf:
```java
GeoJsonObject object = new ObjectMapper().readValue(inputStream, GeoJsonObject.class);
if (object instanceof Polygon) {
...
} else if (object instanceof Feature) {
...
}
```
and so on.
Or you can use the GeoJsonObjectVisitor to visit the right method:
```java
GeoJsonObject object = new ObjectMapper().readValue(inputStream, GeoJsonObject.class);
object.accept(visitor);
```
Writing Json is even easier. You just have to create the GeoJson objects and pass them to the Jackson ObjectMapper.
```java
FeatureCollection featureCollection = new FeatureCollection();
featureCollection.add(new Feature());
String json= new ObjectMapper().writeValueAsString(featureCollection);
```
Maven Central
-------------
You can find the library in the Maven Central Repository.
```xml
<dependency>
<groupId>de.grundid.opendatalab</groupId>
<artifactId>geojson-jackson</artifactId>
<version>1.8.1</version>
</dependency>
```
|
