Enable setting json root via json pointer

spring-ai-core/src/main/java/org/springframework/ai/reader/JsonReader.java

@@ -103,4 +103,26 @@ private Document parseJsonNode(JsonNode jsonNode, ObjectMapper objectMapper) {
 		return new Document(content, metadata);
 	}
 
+	public List<Document> get(JsonNode rootNode) {
+		if (rootNode.isArray()) {
+			return StreamSupport.stream(rootNode.spliterator(), true)
+				.map(jsonNode -> parseJsonNode(jsonNode, objectMapper))
+				.toList();
+		}
+		else {
+			return Collections.singletonList(parseJsonNode(rootNode, objectMapper));
+		}
+	}
+
+	public List<Document> get(String pointer) {
+		try {
+			JsonNode rootNode = objectMapper.readTree(this.resource.getInputStream());
+			rootNode = rootNode.at(pointer);
+			return get(rootNode);
+		}
+		catch (IOException e) {
+			throw new RuntimeException(e);
+		}
+	}
+
 }

spring-ai-core/src/test/java/org/springframework/ai/reader/JsonReaderTests.java

@@ -28,11 +28,14 @@
 @SpringBootTest
 public class JsonReaderTests {
 
+	@Value("classpath:person.json")
+	private Resource ObjectResource;
+
 	@Value("classpath:bikes.json")
 	private Resource arrayResource;
 
-	@Value("classpath:person.json")
-	private Resource ObjectResource;
+	@Value("classpath:events.json")
+	private Resource eventsResource;
 
 	@Test
 	void loadJsonArray() {
@@ -56,4 +59,26 @@ void loadJsonObject() {
 		}
 	}
 
+	@Test
+	void loadJsonArrayFromPointer() {
+		assertThat(arrayResource).isNotNull();
+		JsonReader jsonReader = new JsonReader(eventsResource, "description");
+		List<Document> documents = jsonReader.get("/0/sessions");
+		assertThat(documents).isNotEmpty();
+		for (Document document : documents) {
+			assertThat(document.getContent()).isNotEmpty();
+			assertThat(document.getContent()).contains("Session");
+		}
+	}
+
+	@Test
+	void loadJsonObjectFromPointer() {
+		assertThat(ObjectResource).isNotNull();
+		JsonReader jsonReader = new JsonReader(ObjectResource, "name");
+		List<Document> documents = jsonReader.get("/store");
+		assertThat(documents).isNotEmpty();
+		assertThat(documents.size()).isEqualTo(1);
+		assertThat(documents.get(0).getContent()).contains("name: Bike Shop");
+	}
+
 }

spring-ai-core/src/test/resources/events.json

@@ -0,0 +1,15 @@
+[
+  {
+    "sessions": [
+      {
+        "description": "Session one"
+      },
+      {
+        "description": "Session two"
+      },
+      {
+        "description": "Session three"
+      }
+    ]
+  }
+]