你如何用名字中的冒号解析JSON？ 安卓/ Java的

例如： { "primary:title":"Little Red Riding Hood"}

我的Java解析器（Android）总是因为主要和标题之间的冒号而陷入困境。 我可以轻松解析其他任何内容，我只需要帮助。

 public class MainActivity extends Activity { /** Called when the activity is first created. */ TextView txtViewParsedValue; private JSONObject jsonObject; private JSONArray jsonArray; String [] titles, links, mediaDescriptions, mediaCredits, descriptions, dcCreators, pubDates, categories; String [] permalinks, texts; // guid String [] rels, hrefs; String [] urls, media, heights, widths; // media:content String strParsedValue = ""; private String strJSONValue; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); strJSONValue = readRawTextFile(this, R.raw.jsonextract); txtViewParsedValue = (TextView) findViewById(R.id.text_view_1); try { parseJSON(); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public void parseJSON() throws JSONException { txtViewParsedValue.setText("Parse 1"); jsonObject = new JSONObject(strJSONValue); jsonArray = jsonObject.getJSONArray("item"); titles = new String[jsonArray.length()]; links = new String[jsonArray.length()]; permalinks = new String[jsonArray.length()]; texts = new String[jsonArray.length()]; mediaDescriptions = new String[jsonArray.length()]; mediaCredits = new String[jsonArray.length()]; descriptions = new String[jsonArray.length()]; dcCreators = new String[jsonArray.length()]; pubDates = new String[jsonArray.length()]; categories = new String[jsonArray.length()]; txtViewParsedValue.setText("Parse 2"); for (int i=0; i<jsonArray.length(); i++) { JSONObject object = jsonArray.getJSONObject(i); titles[i] = object.getString("title"); links[i] = object.getString("link"); JSONObject guidObj = object.getJSONObject("guid"); permalinks[i] = guidObj.getString("isPermaLink"); texts[i] = guidObj.getString("text"); //mediaDescriptions[i] = object.getString("media:description"); //mediaCredits[i] = object.getString("media:credit"); // *** THE PARSER FAILS IF THE COMMENTED LINES ARE IMPLEMENTED BECAUSE // OF THE : IN BETWEEN THE NAMES *** descriptions[i] = object.getString("description"); //dcCreators[i] = object.getString("dc:creator"); pubDates[i] = object.getString("pubDate"); categories[i] = object.getString("category"); } for (int i=0; i<jsonArray.length(); i++) { strParsedValue += "\nTitle: " + titles[i]; strParsedValue += "\nLink: " + links[i]; strParsedValue += "\nPermalink: " + permalinks[i]; strParsedValue += "\nText: " + texts[i]; strParsedValue += "\nMedia Description: " + mediaDescriptions[i]; strParsedValue += "\nMedia Credit: " + mediaCredits[i]; strParsedValue += "\nDescription: " + descriptions[i]; strParsedValue += "\nDC Creator: " + dcCreators[i]; strParsedValue += "\nPublication Date: " + pubDates[i]; strParsedValue += "\nCategory: " + categories[i]; strParsedValue += "\n"; } txtViewParsedValue.setText(strParsedValue); } public static String readRawTextFile(Context ctx, int resId) { InputStream inputStream = ctx.getResources().openRawResource(resId); InputStreamReader inputreader = new InputStreamReader(inputStream); BufferedReader buffreader = new BufferedReader(inputreader); String line; StringBuilder text = new StringBuilder(); try { while (( line = buffreader.readLine()) != null) { text.append(line); //text.append('\n'); } } catch (IOException e) { return null; } return text.toString(); } 

Answer 1

对于一个，并回答你的问题，JSONObject和org.json。*类没有问题，如果它们正确形成，则解析具有冒号的键。 传递了以下unit testing，这意味着它能够解析您的示例场景：

 public void testParsingKeysWithColons() throws JSONException { String raw = "{ \"primary:title\":\"Little Red Riding Hood\"}"; JSONObject obj = new JSONObject(raw); String primaryTitle = obj.getString("primary:title"); assertEquals("Little Red Riding Hood", primaryTitle); } 

另一个建议是，为数据使用字符串数组是笨拙的，使用数据结构表示对象可以更好地组织。 而不是标题，链接，描述的字符串数组; 使用具有这些属性的对象并创建对象列表。 例如：

 public class MyDataStructure { public String title; public String primaryTitle; public String link; public String mediaDescription; public static class Keys { public static String title = "title"; public static String primaryTitle = "primary:title"; public static String link = "link"; public static String mediaDescription = "media:description"; } } 

然后你可以创建一个“翻译器”类，为你做所有的解析并返回你的对象列表。 这更易于使用和跟踪。 您永远不必考虑数据不对齐或在您的arrays中拥有比预期更多或更少的数据。 如果输入数据丢失或任何json格式错误，您还可以更轻松地测试问题所在。

 public class MyDataStructureTranslator { public static List parseJson(String rawJsonData) throws JSONException { List list = new ArrayList(); JSONObject obj = new JSONObject(rawJsonData); JSONArray arr = obj.getJSONArray("item"); for(int i = 0; i < arr.length(); i++) { JSONObject current = arr.getJSONObject(i); MyDataStructure item = new MyDataStructure(); item.title = current.getString(MyDataStructure.Keys.title); item.primaryTitle = current.getString(MyDataStructure.Keys.primaryTitle); item.link = current.getString(MyDataStructure.Keys.link); item.mediaDescription = current.getString(MyDataStructure.Keys.mediaDescription); list.add(item); } return list; } }