public static String getJSONFromMap(Map<String, String> map) {
String result = null;
if (map != null) {
try {
JSONObject jsonObject = new JSONObject();
for (Entry<String, String> entry : map.entrySet()) {
jsonObject.put(entry.getKey(), entry.getValue());
}
result = jsonObject.toString();
} catch (JSONException e) {
// log
}
}
return result;
}
/**
* Write the contents of the JSONObject as JSON text to a writer. For compactness, no whitespace
* is added.
*
* <p>Warning: This method assumes that the data structure is acyclical.
*
* @return The writer.
* @throws JSONException
*/
public Writer write(Writer writer) throws JSONException {
try {
boolean b = false;
Iterator keys = keys();
writer.write('{');
while (keys.hasNext()) {
if (b) {
writer.write(',');
}
Object k = keys.next();
writer.write(quote(k.toString()));
writer.write(':');
Object v = this.myHashMap.get(k);
if (v instanceof JSONObject) {
((JSONObject) v).write(writer);
} else if (v instanceof JSONArray) {
((JSONArray) v).write(writer);
} else {
writer.write(valueToString(v));
}
b = true;
}
writer.write('}');
return writer;
} catch (IOException e) {
throw new JSONException(e);
}
}
public static Map<String, String> getMapFromJSON(String jsonString) {
Map<String, String> descriptions = new HashMap<String, String>();
if (jsonString != null) {
try {
JSONObject jsonObject = new JSONObject(jsonString);
@SuppressWarnings("unchecked")
Iterator<String> keyIterator = jsonObject.keys();
while (keyIterator.hasNext()) {
String type = (String) keyIterator.next();
descriptions.put(type, jsonObject.getString(type));
}
} catch (JSONException e) {
// log
}
}
return descriptions;
}
/**
* Construct a JSONObject from a subset of another JSONObject. An array of strings is used to
* identify the keys that should be copied. Missing keys are ignored.
*
* @param jo A JSONObject.
* @param sa An array of strings.
* @throws JSONException If a value is a non-finite number.
*/
public JSONObject(JSONObject jo, String[] sa) throws JSONException {
this();
for (int i = 0; i < sa.length; i += 1) {
putOpt(sa[i], jo.opt(sa[i]));
}
}
