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package cn.trinea.android.common.util;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
/**
* Json Utils
*
* @author <a href="http://www.trinea.cn" target="_blank">Trinea</a> 2012-5-12
*/
public class JSONUtils {
public static boolean isPrintException = true;
private JSONUtils() {
throw new AssertionError();
}
/**
* get Long from jsonObject
*
* @param jsonObject
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if key is null or empty, return defaultValue</li>
* <li>if {@link JSONObject#getLong(String)} exception, return defaultValue</li>
* <li>return {@link JSONObject#getLong(String)}</li>
* </ul>
*/
public static Long getLong(JSONObject jsonObject, String key, Long defaultValue) {
if (jsonObject == null || StringUtils.isEmpty(key)) {
return defaultValue;
}
try {
return jsonObject.getLong(key);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* get Long from jsonData
*
* @param jsonData
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if jsonData {@link JSONObject#JSONObject(String)} exception, return defaultValue</li>
* <li>return {@link JSONUtils#getLong(JSONObject, String, JSONObject)}</li>
* </ul>
*/
public static Long getLong(String jsonData, String key, Long defaultValue) {
if (StringUtils.isEmpty(jsonData)) {
return defaultValue;
}
try {
JSONObject jsonObject = new JSONObject(jsonData);
return getLong(jsonObject, key, defaultValue);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* @param jsonObject
* @param key
* @param defaultValue
* @return
* @see JSONUtils#getLong(JSONObject, String, Long)
*/
public static long getLong(JSONObject jsonObject, String key, long defaultValue) {
return getLong(jsonObject, key, (Long)defaultValue);
}
/**
* @param jsonData
* @param key
* @param defaultValue
* @return
* @see JSONUtils#getLong(String, String, Long)
*/
public static long getLong(String jsonData, String key, long defaultValue) {
return getLong(jsonData, key, (Long)defaultValue);
}
/**
* get Int from jsonObject
*
* @param jsonObject
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if key is null or empty, return defaultValue</li>
* <li>if {@link JSONObject#getInt(String)} exception, return defaultValue</li>
* <li>return {@link JSONObject#getInt(String)}</li>
* </ul>
*/
public static Integer getInt(JSONObject jsonObject, String key, Integer defaultValue) {
if (jsonObject == null || StringUtils.isEmpty(key)) {
return defaultValue;
}
try {
return jsonObject.getInt(key);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* get Int from jsonData
*
* @param jsonData
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if jsonData {@link JSONObject#JSONObject(String)} exception, return defaultValue</li>
* <li>return {@link JSONUtils#getInt(JSONObject, String, JSONObject)}</li>
* </ul>
*/
public static Integer getInt(String jsonData, String key, Integer defaultValue) {
if (StringUtils.isEmpty(jsonData)) {
return defaultValue;
}
try {
JSONObject jsonObject = new JSONObject(jsonData);
return getInt(jsonObject, key, defaultValue);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* @param jsonObject
* @param key
* @param defaultValue
* @return
* @see JSONUtils#getInt(JSONObject, String, Integer)
*/
public static int getInt(JSONObject jsonObject, String key, int defaultValue) {
return getInt(jsonObject, key, (Integer)defaultValue);
}
/**
* @param jsonObject
* @param key
* @param defaultValue
* @return
* @see JSONUtils#getInt(String, String, Integer)
*/
public static int getInt(String jsonData, String key, int defaultValue) {
return getInt(jsonData, key, (Integer)defaultValue);
}
/**
* get Double from jsonObject
*
* @param jsonObject
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if key is null or empty, return defaultValue</li>
* <li>if {@link JSONObject#getDouble(String)} exception, return defaultValue</li>
* <li>return {@link JSONObject#getDouble(String)}</li>
* </ul>
*/
public static Double getDouble(JSONObject jsonObject, String key, Double defaultValue) {
if (jsonObject == null || StringUtils.isEmpty(key)) {
return defaultValue;
}
try {
return jsonObject.getDouble(key);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* get Double from jsonData
*
* @param jsonData
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if jsonData {@link JSONObject#JSONObject(String)} exception, return defaultValue</li>
* <li>return {@link JSONUtils#getDouble(JSONObject, String, JSONObject)}</li>
* </ul>
*/
public static Double getDouble(String jsonData, String key, Double defaultValue) {
if (StringUtils.isEmpty(jsonData)) {
return defaultValue;
}
try {
JSONObject jsonObject = new JSONObject(jsonData);
return getDouble(jsonObject, key, defaultValue);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* @param jsonObject
* @param key
* @param defaultValue
* @return
* @see JSONUtils#getDouble(JSONObject, String, Double)
*/
public static double getDouble(JSONObject jsonObject, String key, double defaultValue) {
return getDouble(jsonObject, key, (Double)defaultValue);
}
/**
* @param jsonObject
* @param key
* @param defaultValue
* @return
* @see JSONUtils#getDouble(String, String, Double)
*/
public static double getDouble(String jsonData, String key, double defaultValue) {
return getDouble(jsonData, key, (Double)defaultValue);
}
/**
* get String from jsonObject
*
* @param jsonObject
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if key is null or empty, return defaultValue</li>
* <li>if {@link JSONObject#getString(String)} exception, return defaultValue</li>
* <li>return {@link JSONObject#getString(String)}</li>
* </ul>
*/
public static String getString(JSONObject jsonObject, String key, String defaultValue) {
if (jsonObject == null || StringUtils.isEmpty(key)) {
return defaultValue;
}
try {
return jsonObject.getString(key);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* get String from jsonData
*
* @param jsonData
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if jsonData {@link JSONObject#JSONObject(String)} exception, return defaultValue</li>
* <li>return {@link JSONUtils#getString(JSONObject, String, JSONObject)}</li>
* </ul>
*/
public static String getString(String jsonData, String key, String defaultValue) {
if (StringUtils.isEmpty(jsonData)) {
return defaultValue;
}
try {
JSONObject jsonObject = new JSONObject(jsonData);
return getString(jsonObject, key, defaultValue);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* get String from jsonObject
*
* @param jsonObject
* @param defaultValue
* @param keyArray
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if keyArray is null or empty, return defaultValue</li>
* <li>get {@link #getJSONObject(JSONObject, String, JSONObject)} by recursion, return it. if anyone is
* null, return directly</li>
* </ul>
*/
public static String getStringCascade(JSONObject jsonObject, String defaultValue, String... keyArray) {
if (jsonObject == null || ArrayUtils.isEmpty(keyArray)) {
return defaultValue;
}
String data = jsonObject.toString();
for (String key : keyArray) {
data = getStringCascade(data, key, defaultValue);
if (data == null) {
return defaultValue;
}
}
return data;
}
/**
* get String from jsonData
*
* @param jsonData
* @param defaultValue
* @param keyArray
* @return <ul>
* <li>if jsonData is null, return defaultValue</li>
* <li>if keyArray is null or empty, return defaultValue</li>
* <li>get {@link #getJSONObject(JSONObject, String, JSONObject)} by recursion, return it. if anyone is
* null, return directly</li>
* </ul>
*/
public static String getStringCascade(String jsonData, String defaultValue, String... keyArray) {
if (StringUtils.isEmpty(jsonData)) {
return defaultValue;
}
String data = jsonData;
for (String key : keyArray) {
data = getString(data, key, defaultValue);
if (data == null) {
return defaultValue;
}
}
return data;
}
/**
* get String array from jsonObject
*
* @param jsonObject
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if key is null or empty, return defaultValue</li>
* <li>if {@link JSONObject#getJSONArray(String)} exception, return defaultValue</li>
* <li>if {@link JSONArray#getString(int)} exception, return defaultValue</li>
* <li>return string array</li>
* </ul>
*/
public static String[] getStringArray(JSONObject jsonObject, String key, String[] defaultValue) {
if (jsonObject == null || StringUtils.isEmpty(key)) {
return defaultValue;
}
try {
JSONArray statusArray = jsonObject.getJSONArray(key);
if (statusArray != null) {
String[] value = new String[statusArray.length()];
for (int i = 0; i < statusArray.length(); i++) {
value[i] = statusArray.getString(i);
}
return value;
}
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
return defaultValue;
}
/**
* get String array from jsonData
*
* @param jsonData
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if jsonData {@link JSONObject#JSONObject(String)} exception, return defaultValue</li>
* <li>return {@link JSONUtils#getStringArray(JSONObject, String, JSONObject)}</li>
* </ul>
*/
public static String[] getStringArray(String jsonData, String key, String[] defaultValue) {
if (StringUtils.isEmpty(jsonData)) {
return defaultValue;
}
try {
JSONObject jsonObject = new JSONObject(jsonData);
return getStringArray(jsonObject, key, defaultValue);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* get String list from jsonObject
*
* @param jsonObject
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if key is null or empty, return defaultValue</li>
* <li>if {@link JSONObject#getJSONArray(String)} exception, return defaultValue</li>
* <li>if {@link JSONArray#getString(int)} exception, return defaultValue</li>
* <li>return string array</li>
* </ul>
*/
public static List<String> getStringList(JSONObject jsonObject, String key, List<String> defaultValue) {
if (jsonObject == null || StringUtils.isEmpty(key)) {
return defaultValue;
}
try {
JSONArray statusArray = jsonObject.getJSONArray(key);
if (statusArray != null) {
List<String> list = new ArrayList<String>();
for (int i = 0; i < statusArray.length(); i++) {
list.add(statusArray.getString(i));
}
return list;
}
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
return defaultValue;
}
/**
* get String list from jsonData
*
* @param jsonData
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if jsonData {@link JSONObject#JSONObject(String)} exception, return defaultValue</li>
* <li>return {@link JSONUtils#getStringList(JSONObject, String, List)}</li>
* </ul>
*/
public static List<String> getStringList(String jsonData, String key, List<String> defaultValue) {
if (StringUtils.isEmpty(jsonData)) {
return defaultValue;
}
try {
JSONObject jsonObject = new JSONObject(jsonData);
return getStringList(jsonObject, key, defaultValue);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* get JSONObject from jsonObject
*
* @param jsonObject
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if key is null or empty, return defaultValue</li>
* <li>if {@link JSONObject#getJSONObject(String)} exception, return defaultValue</li>
* <li>return {@link JSONObject#getJSONObject(String)}</li>
* </ul>
*/
public static JSONObject getJSONObject(JSONObject jsonObject, String key, JSONObject defaultValue) {
if (jsonObject == null || StringUtils.isEmpty(key)) {
return defaultValue;
}
try {
return jsonObject.getJSONObject(key);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* get JSONObject from jsonData
*
* @param jsonData
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonData is null, return defaultValue</li>
* <li>if jsonData {@link JSONObject#JSONObject(String)} exception, return defaultValue</li>
* <li>return {@link JSONUtils#getJSONObject(JSONObject, String, JSONObject)}</li>
* </ul>
*/
public static JSONObject getJSONObject(String jsonData, String key, JSONObject defaultValue) {
if (StringUtils.isEmpty(jsonData)) {
return defaultValue;
}
try {
JSONObject jsonObject = new JSONObject(jsonData);
return getJSONObject(jsonObject, key, defaultValue);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* get JSONObject from jsonObject
*
* @param jsonObject
* @param defaultValue
* @param keyArray
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if keyArray is null or empty, return defaultValue</li>
* <li>get {@link #getJSONObject(JSONObject, String, JSONObject)} by recursion, return it. if anyone is
* null, return directly</li>
* </ul>
*/
public static JSONObject getJSONObjectCascade(JSONObject jsonObject, JSONObject defaultValue, String... keyArray) {
if (jsonObject == null || ArrayUtils.isEmpty(keyArray)) {
return defaultValue;
}
JSONObject js = jsonObject;
for (String key : keyArray) {
js = getJSONObject(js, key, defaultValue);
if (js == null) {
return defaultValue;
}
}
return js;
}
/**
* get JSONObject from jsonData
*
* @param jsonData
* @param defaultValue
* @param keyArray
* @return <ul>
* <li>if jsonData is null, return defaultValue</li>
* <li>if keyArray is null or empty, return defaultValue</li>
* <li>get {@link #getJSONObject(JSONObject, String, JSONObject)} by recursion, return it. if anyone is
* null, return directly</li>
* </ul>
*/
public static JSONObject getJSONObjectCascade(String jsonData, JSONObject defaultValue, String... keyArray) {
if (StringUtils.isEmpty(jsonData)) {
return defaultValue;
}
try {
JSONObject jsonObject = new JSONObject(jsonData);
return getJSONObjectCascade(jsonObject, defaultValue, keyArray);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* get JSONArray from jsonObject
*
* @param jsonObject
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if key is null or empty, return defaultValue</li>
* <li>if {@link JSONObject#getJSONArray(String)} exception, return defaultValue</li>
* <li>return {@link JSONObject#getJSONArray(String)}</li>
* </ul>
*/
public static JSONArray getJSONArray(JSONObject jsonObject, String key, JSONArray defaultValue) {
if (jsonObject == null || StringUtils.isEmpty(key)) {
return defaultValue;
}
try {
return jsonObject.getJSONArray(key);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* get JSONArray from jsonData
*
* @param jsonData
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if jsonData {@link JSONObject#JSONObject(String)} exception, return defaultValue</li>
* <li>return {@link JSONUtils#getJSONArray(JSONObject, String, JSONObject)}</li>
* </ul>
*/
public static JSONArray getJSONArray(String jsonData, String key, JSONArray defaultValue) {
if (StringUtils.isEmpty(jsonData)) {
return defaultValue;
}
try {
JSONObject jsonObject = new JSONObject(jsonData);
return getJSONArray(jsonObject, key, defaultValue);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* get Boolean from jsonObject
*
* @param jsonObject
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if key is null or empty, return defaultValue</li>
* <li>return {@link JSONObject#getBoolean(String)}</li>
* </ul>
*/
public static boolean getBoolean(JSONObject jsonObject, String key, Boolean defaultValue) {
if (jsonObject == null || StringUtils.isEmpty(key)) {
return defaultValue;
}
try {
return jsonObject.getBoolean(key);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* get Boolean from jsonData
*
* @param jsonData
* @param key
* @param defaultValue
* @return <ul>
* <li>if jsonObject is null, return defaultValue</li>
* <li>if jsonData {@link JSONObject#JSONObject(String)} exception, return defaultValue</li>
* <li>return {@link JSONUtils#getBoolean(JSONObject, String, Boolean)}</li>
* </ul>
*/
public static boolean getBoolean(String jsonData, String key, Boolean defaultValue) {
if (StringUtils.isEmpty(jsonData)) {
return defaultValue;
}
try {
JSONObject jsonObject = new JSONObject(jsonData);
return getBoolean(jsonObject, key, defaultValue);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return defaultValue;
}
}
/**
* get map from jsonObject.
*
* @param jsonObject key-value pairs json
* @param key
* @return <ul>
* <li>if jsonObject is null, return null</li>
* <li>return {@link JSONUtils#parseKeyAndValueToMap(String)}</li>
* </ul>
*/
public static Map<String, String> getMap(JSONObject jsonObject, String key) {
return JSONUtils.parseKeyAndValueToMap(JSONUtils.getString(jsonObject, key, null));
}
/**
* get map from jsonData.
*
* @param jsonData key-value pairs string
* @param key
* @return <ul>
* <li>if jsonData is null, return null</li>
* <li>if jsonData length is 0, return empty map</li>
* <li>if jsonData {@link JSONObject#JSONObject(String)} exception, return null</li>
* <li>return {@link JSONUtils#getMap(JSONObject, String)}</li>
* </ul>
*/
public static Map<String, String> getMap(String jsonData, String key) {
if (jsonData == null) {
return null;
}
if (jsonData.length() == 0) {
return new HashMap<String, String>();
}
try {
JSONObject jsonObject = new JSONObject(jsonData);
return getMap(jsonObject, key);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return null;
}
}
/**
* parse key-value pairs to map. ignore empty key, if getValue exception, put empty value
*
* @param sourceObj key-value pairs json
* @return <ul>
* <li>if sourceObj is null, return null</li>
* <li>else parse entry by {@link MapUtils#putMapNotEmptyKey(Map, String, String)} one by one</li>
* </ul>
*/
@SuppressWarnings("rawtypes")
public static Map<String, String> parseKeyAndValueToMap(JSONObject sourceObj) {
if (sourceObj == null) {
return null;
}
Map<String, String> keyAndValueMap = new HashMap<String, String>();
for (Iterator iter = sourceObj.keys(); iter.hasNext();) {
String key = (String)iter.next();
MapUtils.putMapNotEmptyKey(keyAndValueMap, key, getString(sourceObj, key, ""));
}
return keyAndValueMap;
}
/**
* parse key-value pairs to map. ignore empty key, if getValue exception, put empty value
*
* @param source key-value pairs json
* @return <ul>
* <li>if source is null or source's length is 0, return empty map</li>
* <li>if source {@link JSONObject#JSONObject(String)} exception, return null</li>
* <li>return {@link JSONUtils#parseKeyAndValueToMap(JSONObject)}</li>
* </ul>
*/
public static Map<String, String> parseKeyAndValueToMap(String source) {
if (StringUtils.isEmpty(source)) {
return null;
}
try {
JSONObject jsonObject = new JSONObject(source);
return parseKeyAndValueToMap(jsonObject);
} catch (JSONException e) {
if (isPrintException) {
e.printStackTrace();
}
return null;
}
}
}