public void run() throws IOException {
Properties properties = ...;
Map<String, Object> map = new TreeMap<>();
for (Object key : properties.keySet()) {
List<String> keyList = Arrays.asList(((String) key).split("\\."));
Map<String, Object> valueMap = createTree(keyList, map);
String value = properties.getProperty((String) key);
value = StringEscapeUtils.unescapeHtml(value);
valueMap.put(keyList.get(keyList.size() - 1), value);
}
Gson gson = new GsonBuilder().setPrettyPrinting().create();
String json = gson.toJson(map);
System.out.println("Ready, converts " + properties.size() + " entries.");
}
@SuppressWarnings("unchecked")
private Map<String, Object> createTree(List<String> keys, Map<String, Object> map) {
Map<String, Object> valueMap = (Map<String, Object>) map.get(keys.get(0));
if (valueMap == null) {
valueMap = new HashMap<String, Object>();
}
map.put(keys.get(0), valueMap);
Map<String, Object> out = valueMap;
if (keys.size() > 2) {
out = createTree(keys.subList(1, keys.size()), valueMap);
}
return out;
}
现在该项目支持Java 7。 –