Divide the MSB source codes into two repos

[msb/apigateway.git] / apiroute / apiroute-service / src / main / java / org / onap / msb / apiroute / wrapper / util / JacksonJsonUtil.java

diff --git a/apiroute/apiroute-service/src/main/java/org/onap/msb/apiroute/wrapper/util/JacksonJsonUtil.java b/apiroute/apiroute-service/src/main/java/org/onap/msb/apiroute/wrapper/util/JacksonJsonUtil.java
new file mode 100644 (file)
index 0000000..4a7f50e
--- /dev/null
+++ b/apiroute/apiroute-service/src/main/java/org/onap/msb/apiroute/wrapper/util/JacksonJsonUtil.java
@@ -0,0 +1,110 @@
+/**
+ * Copyright 2016 ZTE, Inc. and others.
+ *
+ * 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.msb.apiroute.wrapper.util;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+
+
+public class JacksonJsonUtil {
+
+  private static final Logger logger = LoggerFactory.getLogger(JacksonJsonUtil.class);
+
+  private volatile static ObjectMapper mapper = null;
+
+  private static ObjectMapper getMapperInstance() {
+    if (mapper == null) {
+      synchronized (JacksonJsonUtil.class) {
+        if (mapper == null) {
+          mapper = new ObjectMapper();
+        }
+      }
+    }
+    return mapper;
+  }
+
+  /**
+   * from java object to json
+   * 
+   * @param obj
+   * @return json
+   * @throws Exception
+   */
+  public static String beanToJson(Object obj) throws Exception {
+      String json = null;
+
+      ObjectMapper objectMapper = getMapperInstance();
+      objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
+      json = objectMapper.writeValueAsString(obj);
+    
+      return json;
+  }
+
+
+
+  /**
+   * from json to java object
+   * 
+   * @param json
+   * @param cls
+   * @return
+   * @throws Exception
+   */
+  public static Object jsonToBean(String json, Class<?> cls) throws Exception {
+    Object vo = null;
+    try {
+      ObjectMapper objectMapper = getMapperInstance();
+      objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
+      vo = objectMapper.readValue(json, cls);
+
+    } catch (Exception e) {
+      logger.error(cls + " JsonTobean faild");
+      throw new Exception(cls + " JsonTobean faild");
+    }
+    return vo;
+  }
+
+  /**
+   * from json to java List
+   * 
+   * @param json
+   * @return
+   * @throws Exception
+   */
+
+  public static <T> T jsonToListBean(String json, TypeReference<T> valueTypeRef) {
+    try {
+
+      ObjectMapper objectMapper = getMapperInstance();
+
+
+      return objectMapper.readValue(json, valueTypeRef);
+
+    } catch (Exception e) {
+      String errorMsg = " JsonTobean faild:" + e.getMessage();
+      logger.error(errorMsg);
+    }
+    return null;
+  }
+
+
+
+}