Java中json文档中叶节点的所有路径的输出列表

Java中json文档中叶节点的所有路径的输出列表

事实证明，使用Gson做到这一点非常容易，尤其是使用2.3中引入的JsonReader.getPath（）方法时。

static void parseJson(String json) throws IOException {    JsonReader reader = new JsonReader(new StringReader(json));    reader.setLenient(true);    while (true) {        JsonToken token = reader.peek();        switch (token) { case BEGIN_ARRAY:     reader.beginArray();     break; case END_ARRAY:     reader.endArray();     break; case BEGIN_OBJECT:     reader.beginObject();     break; case END_OBJECT:     reader.endObject();     break; case NAME:     reader.nextName();     break; case STRING:     String s = reader.nextString();     print(reader.getPath(), quote(s));     break; case NUMBER:     String n = reader.nextString();     print(reader.getPath(), n);     break; case BOOLEAN:     boolean b = reader.nextBoolean();     print(reader.getPath(), b);     break; case NULL:     reader.nextNull();     break; case END_document:     return;        }    }}static private void print(String path, Object value) {    path = path.substring(2);    path = PATTERN.matcher(path).replaceAll("");    System.out.println(path + ": " + value);}static private String quote(String s) {    return new StringBuilder() .append('"') .append(s) .append('"') .toString();}static final String REGEX = "\[[0-9]+\]";static final Pattern PATTERN = Pattern.compile(REGEX);