sdclient/discovery-service/src/main/java/org/onap/msb/sdclient/wrapper/util/JacksonJsonUtil.java

   1 /**
   2  * Copyright 2016 ZTE, Inc. and others.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.onap.msb.sdclient.wrapper.util;
  17
  18 import java.util.List;
  19 import java.util.Map;
  20
  21 import org.onap.msb.sdclient.core.CatalogService;
  22 import org.onap.msb.sdclient.core.HealthService;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 import com.fasterxml.jackson.core.type.TypeReference;
  27 import com.fasterxml.jackson.databind.ObjectMapper;
  28 import com.fasterxml.jackson.databind.SerializationFeature;
  29
  30
  31 public class JacksonJsonUtil {
  32
  33          private static final Logger logger = LoggerFactory.getLogger(JacksonJsonUtil.class);
  34
  35         private static ObjectMapper mapper;
  36
  37         /**
  38          * 获取ObjectMapper实例
  39          * @param createNew 方式：true，新实例；false,存在的mapper实例
  40          * @return
  41          */
  42         public static synchronized ObjectMapper getMapperInstance() {
  43        if (mapper == null) {
  44             mapper = new ObjectMapper();
  45         }
  46         return mapper;
  47     }
  48
  49         /**
  50          * 将java对象转换成json字符串
  51          * @param obj 准备转换的对象
  52          * @return json字符串
  53          * @throws Exception
  54          */
  55         public static String beanToJson(Object obj) throws Exception {
  56                 String json=null;
  57                 try {
  58                         ObjectMapper objectMapper = getMapperInstance();
  59                          objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
  60                         json =objectMapper.writeValueAsString(obj);
  61                 } catch (Exception e) {
  62                     logger.error("Class beanToJson faild:"+e.getMessage());
  63                          throw new Exception("Class beanToJson faild:"+e.getMessage());
  64                 }
  65                 return json;
  66         }
  67
  68
  69
  70         /**
  71          * 将json字符串转换成java对象
  72          * @param json 准备转换的json字符串
  73          * @param cls  准备转换的类
  74          * @return
  75          * @throws Exception
  76          */
  77         public static Object jsonToBean(String json, Class<?> cls) throws Exception {
  78                 Object vo =null;
  79                 try {
  80                 ObjectMapper objectMapper = getMapperInstance();
  81                   objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
  82                  vo = objectMapper.readValue(json, cls);
  83
  84                 } catch (Exception e) {
  85                     logger.error(cls+" JsonTobean faild:"+e.getMessage());
  86                         throw new Exception(cls+" JsonTobean faild:"+e.getMessage());
  87                 }
  88                 return vo;
  89         }
  90
  91
  92
  93
  94     /**
  95      * 将json字符串转换成java集合对象
  96      * @param json 准备转换的json字符串
  97      * @param cls  准备转换的类
  98      * @return
  99      * @throws Exception
 100      */
 101     public static List<CatalogService> jsonToListBean(String json) {
 102         List<CatalogService> vo =null;
 103         try {
 104
 105         ObjectMapper objectMapper = getMapperInstance();
 106
 107
 108          vo = objectMapper.readValue(json, new TypeReference<List<CatalogService>>() {});
 109
 110         } catch (Exception e) {
 111             String errorMsg =" JsonTobean faild:"+e.getMessage();
 112             logger.error(errorMsg);
 113         }
 114         return vo;
 115     }
 116
 117     public static <T> T jsonToListBean(String json,TypeReference<T> valueTypeRef) {
 118         try {
 119
 120         ObjectMapper objectMapper = getMapperInstance();
 121
 122
 123         return objectMapper.readValue(json, valueTypeRef);
 124
 125         } catch (Exception e) {
 126             String errorMsg =" JsonTobean faild:"+e.getMessage();
 127             logger.error(errorMsg);
 128         }
 129         return null;
 130     }
 131
 132
 133
 134
 135
 136     /**
 137      * 将json字符串转换成java集合对象
 138      * @param json 准备转换的json字符串
 139      * @param cls  准备转换的类
 140      * @return
 141      * @throws Exception
 142      */
 143     public static Map<String,String[]> jsonToMapBean(String json) {
 144         Map<String,String[]> vo =null;
 145         try {
 146
 147         ObjectMapper objectMapper = getMapperInstance();
 148
 149
 150          vo = objectMapper.readValue(json, new TypeReference<Map<String,String[]>>() {});
 151
 152         } catch (Exception e) {
 153             String errorMsg =" JsonTobean faild";
 154             logger.error(errorMsg);
 155         }
 156         return vo;
 157     }
 158
 159
 160     public static void main(String[] args) {
 161         String json="[{\"Node\":{\"Node\":\"A23179111\",\"Address\":\"10.74.44.27\",\"CreateIndex\":3,\"ModifyIndex\":318},\"Service\":{\"ID\":\"oo_10.74.56.36_5656\",\"Service\":\"oo\",\"Tags\":[\"url:/root\",\"protocol:REST\",\"version:\",\"visualRange:0|1\",\"ttl:-1\",\"status:1\",\"lb_policy:client_custom\",\"lb_server_params:weight=1 max_fails=1 fail_timeout=16s\",\"checkType:TCP\",\"checkInterval:10\",\"checkUrl:10.56.23.63:8989\"],\"Address\":\"10.74.56.36\",\"Port\":5656,\"EnableTagOverride\":false,\"CreateIndex\":314,\"ModifyIndex\":318},\"Checks\":[{\"Node\":\"A23179111\",\"CheckID\":\"serfHealth\",\"Name\":\"Serf Health Status\",\"Status\":\"passing\",\"Notes\":\"\",\"Output\":\"Agent alive and reachable\",\"ServiceID\":\"\",\"ServiceName\":\"\",\"CreateIndex\":3,\"ModifyIndex\":3},{\"Node\":\"A23179111\",\"CheckID\":\"service:oo_10.74.56.36_5656\",\"Name\":\"Service 'oo' check\",\"Status\":\"critical\",\"Notes\":\"\",\"Output\":\"\",\"ServiceID\":\"oo_10.74.56.36_5656\",\"ServiceName\":\"oo\",\"CreateIndex\":314,\"ModifyIndex\":318}]},{\"Node\":{\"Node\":\"A23179111\",\"Address\":\"10.74.44.27\",\"CreateIndex\":3,\"ModifyIndex\":318},\"Service\":{\"ID\":\"oo_10.78.36.36_111\",\"Service\":\"oo\",\"Tags\":[\"url:/root\",\"protocol:REST\",\"version:\",\"visualRange:0|1\",\"ttl:-1\",\"status:1\",\"lb_policy:client_custom\"],\"Address\":\"10.78.36.36\",\"Port\":111,\"EnableTagOverride\":false,\"CreateIndex\":315,\"ModifyIndex\":315},\"Checks\":[{\"Node\":\"A23179111\",\"CheckID\":\"serfHealth\",\"Name\":\"Serf Health Status\",\"Status\":\"passing\",\"Notes\":\"\",\"Output\":\"Agent alive and reachable\",\"ServiceID\":\"\",\"ServiceName\":\"\",\"CreateIndex\":3,\"ModifyIndex\":3}]}]";
 162         List<HealthService> list=jsonToListBean(json,new TypeReference<List<HealthService>>() {
 163         });
 164         System.out.println(list);
 165
 166     }
 167
 168
 169
 170
 171 }