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Diffstat (limited to 'service/src/main/java/org/onap/vfc/nfvo/multivimproxy/common/util/JsonUtil.java')
| -rw-r--r-- | service/src/main/java/org/onap/vfc/nfvo/multivimproxy/common/util/JsonUtil.java | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/service/src/main/java/org/onap/vfc/nfvo/multivimproxy/common/util/JsonUtil.java b/service/src/main/java/org/onap/vfc/nfvo/multivimproxy/common/util/JsonUtil.java new file mode 100644 index 0000000..14df83a --- /dev/null +++ b/service/src/main/java/org/onap/vfc/nfvo/multivimproxy/common/util/JsonUtil.java @@ -0,0 +1,290 @@ +/* + * Copyright 2016 Huawei Technologies Co., Ltd. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.onap.vfc.nfvo.multivimproxy.common.util; + +import org.onap.vfc.nfvo.multivimproxy.common.constant.ParamConstant; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import net.sf.json.JSONArray; +import net.sf.json.JSONException; +import net.sf.json.JSONObject; + +/** + * + * Json Utility Class.<br/> + * <p> + * </p> + * + * @author + * @version VFC 1.0 Sep 10, 2016 + */ +public final class JsonUtil { + + private static final Logger LOG = LoggerFactory.getLogger(StringUtil.class); + + private static final int TYPE_STRING = 0; + + private static final int TYPE_INT = 1; + + private static final int TYPE_JSONA = 2; + + private static final int TYPE_JSONO = 3; + + private static final int TYPE_LONG = 4; + + private JsonUtil() { + } + + /** + * + * Get Json Field String.<br> + * + * @param jsonObj + * @param fieldName + * @return + * @since VFC 1.0 + */ + public static String getJsonFieldStr(JSONObject jsonObj, String fieldName) { + return (String)getJsonFieldObject(jsonObj, fieldName, TYPE_STRING); + } + + /** + * + * Get Json Field Integer.<br> + * + * @param jsonObj + * @param fieldName + * @return + * @since VFC 1.0 + */ + public static Integer getJsonFieldInt(JSONObject jsonObj, String fieldName) { + return (Integer)getJsonFieldObject(jsonObj, fieldName, TYPE_INT); + } + + /** + * + * Get Json Field array.<br> + * + * @param jsonObj + * @param fieldName + * @return + * @since VFC 1.0 + */ + public static JSONArray getJsonFieldArr(JSONObject jsonObj, String fieldName) { + return (JSONArray)getJsonFieldObject(jsonObj, fieldName, TYPE_JSONA); + } + + /** + * + * Get Json Field Json.<br> + * + * @param jsonObj + * @param fieldName + * @return + * @since VFC 1.0 + */ + public static JSONObject getJsonFieldJson(JSONObject jsonObj, String fieldName) { + return (JSONObject)getJsonFieldObject(jsonObj, fieldName, TYPE_JSONO); + } + + /** + * + * Get Json Field Long.<br> + * + * @param jsonObj + * @param fieldName + * @return + * @since VFC 1.0 + */ + public static Long getJsonFieldLong(JSONObject jsonObj, String fieldName) { + return (Long)getJsonFieldObject(jsonObj, fieldName, TYPE_LONG); + } + + /** + * + * Get Json Field Object.<br> + * + * @param jsonObj + * @param fieldName + * @param classType + * @return + * @since VFC 1.0 + */ + private static Object getJsonFieldObject(JSONObject jsonObj, String fieldName, int classType) { + try { + if(null != jsonObj && jsonObj.has(fieldName)) { + Object result; + switch(classType) { + case TYPE_STRING: + result = "null".equals(jsonObj.getString(fieldName)) ? "" : jsonObj.getString(fieldName); + break; + case TYPE_INT: + result = jsonObj.getInt(fieldName); + break; + case TYPE_JSONA: + result = jsonObj.getJSONArray(fieldName); + break; + case TYPE_JSONO: + result = jsonObj.getJSONObject(fieldName); + break; + case TYPE_LONG: + result = jsonObj.getLong(fieldName); + break; + default: + result = null; + break; + } + return result; + } + } catch(JSONException e) { + LOG.error("function=getJsonFieldLong, exception: {} ", e); + return null; + } + return null; + } + + /** + * + * Check whether the Json Object is empty.<br> + * + * @param jsonObject + * @return + * @since VFC 1.0 + */ + public static boolean isNullJson(JSONObject jsonObject) { + if(null == jsonObject || jsonObject.isEmpty()) { + return true; + } + return false; + } + + /** + * + * Get String value by Json.<br> + * + * @param json + * @param key + * @return + * @since VFC 1.0 + */ + public static String getStrValueByjson(JSONObject json, String key) { + JSONArray names = json.names(); + String result = null; + for(int i = 0; i < names.size(); i++) { + String nodeName = names.getString(i); + if(json.optJSONObject(nodeName) != null) { + result = getStrValueByjson(json.getJSONObject(nodeName), key); + } + if(json.optJSONArray(nodeName) != null) { + result = getStrValueByJArray(json.getJSONArray(nodeName), key); + } + if(nodeName.equals(key)) { + result = json.getString(nodeName); + break; + } + } + return result; + } + + private static String getStrValueByJArray(JSONArray json, String key) { + String result = null; + for(int i = 0; i < json.size(); i++) { + if(json.optJSONObject(i) != null) { + result = getStrValueByjson(json.getJSONObject(i), key); + } + if(json.optJSONArray(i) != null) { + result = getStrValueByJArray(json.getJSONArray(i), key); + } + } + return result; + } + + /** + * + * Get Json Value by Json object.<br> + * + * @param json + * @param key + * @return + * @since VFC 1.0 + */ + public static JSONObject getJsonValueByjson(JSONObject json, String key) { + JSONObject resultJson = new JSONObject(); + String result = getStrValueByjson(json, key); + if(null == result) { + return null; + } + resultJson.element(key, result); + return resultJson; + + } + + /** + * + * Get String Value by Json object.<br> + * + * @param json + * @param parentKey + * @param key + * @return + * @since VFC 1.0 + */ + public static String getStrValueByParentJson(JSONObject json, String parentKey, String key) { + if(parentKey.isEmpty()) { + return getStrValueByjson(json, key); + } + JSONObject parentJson = getJsonValueByjson(json, parentKey); + if(isNullJson(parentJson)) { + return null; + } + return getStrValueByjson(parentJson, key); + + } + + /** + * + * Get response Data.<br> + * + * @param obj + * @return + * @since VFC 1.0 + */ + public static JSONObject getResponseData(JSONObject obj) { + JSONObject result = new JSONObject(); + + Integer retCode = getJsonFieldInt(obj, ParamConstant.PARAM_RETCODE); + if(null == retCode || retCode == -1) { + return null; + } + + if(obj.optJSONObject(ParamConstant.PARAM_DATA) != null) { + result = obj.getJSONObject(ParamConstant.PARAM_DATA); + } else if(obj.optJSONArray(ParamConstant.PARAM_DATA) != null) { + result = obj.getJSONArray(ParamConstant.PARAM_DATA).getJSONObject(0); + } + if(result.isEmpty()) { + return null; + } + + if(result.containsKey(ParamConstant.PARAM_RETCODE)) { + result = getResponseData(result); + } + return result; + } + +} |