private static void readJsonFile() {
try (JsonReader jsonReader =
Json.createReader(
new FileReader(
Paths.get(System.getProperty("user.dir"), "target/myData.json").toString()))) {
JsonStructure jsonStructure = jsonReader.read();
JsonValue.ValueType valueType = jsonStructure.getValueType();
if (valueType == JsonValue.ValueType.OBJECT) {
JsonObject jsonObject = (JsonObject) jsonStructure;
JsonValue firstName = jsonObject.get("firstName");
LOGGER.info("firstName=" + firstName);
JsonValue emailAddresses = jsonObject.get("phoneNumbers");
if (emailAddresses.getValueType() == JsonValue.ValueType.ARRAY) {
JsonArray jsonArray = (JsonArray) emailAddresses;
for (int i = 0; i < jsonArray.size(); i++) {
JsonValue jsonValue = jsonArray.get(i);
LOGGER.info("emailAddress(" + i + "): " + jsonValue);
}
}
} else {
LOGGER.warning("First object is not of type " + JsonValue.ValueType.OBJECT);
}
} catch (FileNotFoundException e) {
LOGGER.severe("Failed to open file: " + e.getMessage());
}
}
public static void main(String[] args) throws IOException {
String workingDir = System.getProperty("user.dir");
Path filePath = FileSystems.getDefault().getPath(workingDir + "/resources/Day12");
JsonReader reader = Json.createReader(Files.newInputStream(filePath));
JsonStructure jsonst = reader.read();
System.out.printf("Value is %d\n", navigateTree(jsonst, null));
System.out.printf("Value is %d\n", navigateTree(jsonst, "red"));
}
private static void createJsonFile() {
JsonObject model =
Json.createObjectBuilder()
.add("firstName", "Martin")
.add(
"phoneNumbers",
Json.createArrayBuilder()
.add(Json.createObjectBuilder().add("mobile", "1234 56789"))
.add(Json.createObjectBuilder().add("home", "2345 67890")))
.build();
try (JsonWriter jsonWriter =
Json.createWriter(
new FileWriter(
Paths.get(System.getProperty("user.dir"), "target/myData.json").toString()))) {
jsonWriter.write(model);
} catch (IOException e) {
LOGGER.severe("Failed to create file: " + e.getMessage());
}
}