public static void dumpJSON(JsonValue tree, String key, String depthPrefix) {
if (key != null) logger.info(depthPrefix + "Key " + key + ": ");
switch (tree.getValueType()) {
case OBJECT:
logger.info(depthPrefix + "OBJECT");
JsonObject object = (JsonObject) tree;
for (String name : object.keySet()) dumpJSON(object.get(name), name, depthPrefix + " ");
break;
case ARRAY:
logger.info(depthPrefix + "ARRAY");
JsonArray array = (JsonArray) tree;
for (JsonValue val : array) dumpJSON(val, null, depthPrefix + " ");
break;
case STRING:
JsonString st = (JsonString) tree;
logger.info(depthPrefix + "STRING " + st.getString());
break;
case NUMBER:
JsonNumber num = (JsonNumber) tree;
logger.info(depthPrefix + "NUMBER " + num.toString());
break;
case TRUE:
case FALSE:
case NULL:
logger.info(depthPrefix + tree.getValueType().toString());
break;
}
}
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());
}
}
/**
* http://docs.oracle.com/middleware/1213/wls/WLPRG/java-api-for-json-proc.htm#WLPRG1061
*
* @param tree
* @param key
*/
public static Object navigateTree(JsonValue tree, String key) {
Object ret = null;
if (key != null) System.out.print("Key " + key + ": ");
switch (tree.getValueType()) {
case OBJECT:
System.out.println("OBJECT");
JsonObject object = (JsonObject) tree;
for (String name : object.keySet()) navigateTree(object.get(name), name);
break;
case ARRAY:
System.out.println("ARRAY");
JsonArray array = (JsonArray) tree;
for (JsonValue val : array) navigateTree(val, null);
break;
case STRING:
JsonString st = (JsonString) tree;
System.out.println("STRING " + st.getString());
break;
case NUMBER:
JsonNumber num = (JsonNumber) tree;
System.out.println("NUMBER " + num.toString());
break;
case TRUE:
System.out.println("TRUE");
case FALSE:
System.out.println("FALSE");
case NULL:
System.out.println(tree.getValueType().toString());
break;
}
return ret;
}
public static int navigateTree(JsonValue tree, String skip) {
int ret = 0;
switch (tree.getValueType()) {
case OBJECT:
// System.out.println("OBJECT");
JsonArrayBuilder dirtyResult = Json.createArrayBuilder();
JsonObject object = (JsonObject) tree;
for (String name : object.keySet()) {
if (object.get(name).getValueType() == JsonValue.ValueType.STRING
&& object.getString(name).equals(skip)) {
return 0;
}
dirtyResult.add(object.get(name));
}
ret = ret + navigateTree(dirtyResult.build(), skip);
break;
case ARRAY:
// System.out.println("ARRAY");
JsonArray array = (JsonArray) tree;
for (JsonValue val : array) ret = ret + navigateTree(val, skip);
break;
case STRING:
JsonString st = (JsonString) tree;
// System.out.println("STRING " + st.getString());
break;
case NUMBER:
JsonNumber num = (JsonNumber) tree;
return num.intValue();
case TRUE:
case FALSE:
case NULL:
// System.out.println(tree.getValueType().toString());
break;
}
return ret;
}