JackJSON 读取服务器端 返回的Json对象

以下列举了几种常用方式：

Json例子：

{    "obj":{        "propImages":[            {                "Key":"1415",                "propTargetUrl":"http://115.29.238.140:8017/cs/images/1068/target",                "propOriginalUrl":"http://115.29.238.140:8017/cs/images/1068",                "fdPrimUrl":"http://115.29.238.140:8017/cs/images/1068",                "fdAutoId":1            },            {                "Key":"1416",                "propTargetUrl":"http://115.29.238.140:8017/cs/images/1069/target",                "propOriginalUrl":"http://115.29.238.140:8017/cs/images/1069",                "fdPrimUrl":"http://115.29.238.140:8017/cs/images/1069",                "fdAutoId":2            },            {                "Key":"1417",                "propTargetUrl":"http://115.29.238.140:8017/cs/images/1070/target",                "propOriginalUrl":"http://115.29.238.140:8017/cs/images/1070",                "fdPrimUrl":"http://115.29.238.140:8017/cs/images/1070",                "fdAutoId":3            },            {                "Key":"1418",                "propTargetUrl":"http://115.29.238.140:8017/cs/images/1071/target",                "propOriginalUrl":"http://115.29.238.140:8017/cs/images/1071",                "fdPrimUrl":"http://115.29.238.140:8017/cs/images/1071",                "fdAutoId":4            },            {                "Key":"1419",                "propTargetUrl":"http://115.29.238.140:8017/cs/images/1072/target",                "propOriginalUrl":"http://115.29.238.140:8017/cs/images/1072",                "fdPrimUrl":"http://115.29.238.140:8017/cs/images/1072",                "fdAutoId":5            },            {                "Key":"1420",                "propTargetUrl":"http://115.29.238.140:8017/cs/images/1073/target",                "propOriginalUrl":"http://115.29.238.140:8017/cs/images/1073",                "fdPrimUrl":"http://115.29.238.140:8017/cs/images/1073",                "fdAutoId":6            }        ],        "propStoreSKU":[            {                "Id":26,                "Name":"颜色",                "Values":[                    "金色",                    "可定制",                    "深棕色",                    "银色"                ],                "ItemIds":[                    27,                    42,                    32,                    37                ],                "IsStore":true,                "ValuesString":"金色,可定制,深棕色,银色"            }        ],        "propUnStoreSKU":[        ],        "propSKUs":[            {                "Id":26,                "Name":"颜色",                "Values":[                    "金色",                    "可定制",                    "深棕色",                    "银色"                ],                "ItemIds":[                    27,                    42,                    32,                    37                ],                "IsStore":true,                "ValuesString":"金色,可定制,深棕色,银色"            }        ],        "propPCUrl":"http://runde.pfbaba.com:8016/Product/Detail/204",        "propFullPrice":"面议",        "propPrice":"面议",        "propShortPrice":"面议",        "propIsNegotiable":true,        "propProperties":[            {                "Name":"尺码",                "Value":"85%"            },            {                "Name":"张幅",                "Value":"30-50尺"            },            {                "Name":"厚度",                "Value":"1.6-1.8mm"            },            {                "Name":"皮层",                "Value":"二层"            },            {                "Name":"纹路",                "Value":"西雅图"            }        ],        "propStartTip":"1件起购",        "propClassifyName":"黄牛皮",        "propShopName":"润德皮革",        "propAppListImage":"http://115.29.238.140:8017/cs/images/1068/300x300",        "propCategory":null,        "propIsRecommendName":"未推荐",        "propIsPublishName":"已发布",        "propIsFreeShippingName":"买家付",        "fdProdId":204,        "fdProdShortId":105,        "fdProdClassifyId":15,        "fdProdName":"厂家直销大量现货 牛皮二层西雅图 各种颜色可定制 纹路清晰",        "fdProdImage":"http://115.29.238.140:8017/cs/images/1068",        "fdProdPrice":"面议",        "fdProdUnit":"平方英尺",        "fdProdStart":"1",        "fdProdSort":336,        "fdProdCreateAt":"2015-12-03 16:01:23",        "fdProdIsRecommend":0,        "fdProdFeature":"",        "fdProdSoftness":"",        "fdProdUses":"箱包等",        "fdProdIntroduce":"<p> </p> <p><img src="http://115.29.238.140:8017/plugin/upload/web/store/editor//attas/20151203/635847552820393542.jpg" alt="" /></p>",        "fdProdNotice":"",        "fdProdCollectionCount":0,        "fdProdShareCount":0,        "fdProdIsPublish":1,        "fdProdIsFreeShipping":0,        "fdProdWeight":0,        "fdProdFreightTemplateId":0,        "fdProdIsHot":1,        "fdProdSummary":"<p> </p> <p> </p>",        "fdProdOriginProvince":23,        "fdProdOriginCity":278,        "fdProdOrigin":"浙江温州市",        "fdProdCategory":null,        "fdProdBrand":"",        "fdProdBrandImg":"",        "fdProdPriceLow":null,        "fdProdPriceHigh":null,        "fdProdType":0,        "fdProdNegotiable":true,        "fdProdNum":"",        "fdAutoId":0    },    "property":{        "obj_name":"Product",        "is_list":false    },    "error":{        "err_msg":"",        "err_code":0,        "request_args":"id=204,data=null,="    }}

首先你得有个单例全局类

/** *  * @ClassName: JackJsonUtil  * @Description: JackJson  解析  * @author William * @date 2016年3月31日 上午10:50:52  * */public class JackJsonUtil {private static final ObjectMapper mapper = new ObjectMapper();private JackJsonUtil() {}public static ObjectMapper getInstance() {return (mapper == null) ? new ObjectMapper() : mapper;}}

然后下面是几种常用的读取方式：一般性JsonNode直接读取方式、Collection类型读取、Bean 持久转换型读取

<pre name="code" class="java"> try {        ObjectMapper objectMapper = JackJsonUtil.getInstance();        JsonNode jsonNode = objectMapper.readTree(result);    JsonNode objNode = jsonNode.get("obj");    JsonNode errorNode = jsonNode.get("error");    JsonNode propertyNode = jsonNode.get("property");    String personString = jsonNode.toString();    JsonNode propNode  = objNode.get("propImages");        Log.e("\n\n============= Get JsonArray Directly  ======================");    Iterator<JsonNode> propIterator = propNode.getElements();    while (propIterator.hasNext()) {    JsonNode jn = propIterator.next();Log.e(jn.get("propOriginalUrl").toString());    }        Log.e("\n\n============= To Map  ======================");    Map map_ = objectMapper.readValue(propNode.toString(), Map.class);    for (int i=0 ; i<map_.size(); i++) {    Iterator it =  map_.entrySet().iterator();    while(it.hasNext()) {    Entry entry = (Entry) it.next();    Log.e(entry.getKey() + " : " + entry.getValue());    }    }        Log.e("\n\n============= To List  ======================");    List propChilds = objectMapper.readValue(propNode.toString(), List.class);    for (int i=0 ; i<propChilds.size(); i++) {    Map map = (Map) propChilds.get(i);    Iterator it =  map.entrySet().iterator();    while(it.hasNext()) {    Entry entry = (Entry) it.next();    Log.e(entry.getKey() + " : " + entry.getValue());    }    }        Log.e("\n\n============= To Bean ======================");    Error error = objectMapper.readValue(errorNode, Error.class);    Log.e("error.getErr_code() : " + error.getErr_code());    Log.e("error.getErr_msg() : " + error.getErr_msg());    Log.e("error.getRequest_args() : " + error.getRequest_args());    } catch (Exception e) {return;}

Error.java文件:

/** *  * @ClassName: Error  * @Description: 接口错误返回信息  * @author William * @date 2016年3月31日 上午11:40:17  * */public class Error {/** * 错误信息 */private String err_msg;/** * 错误码 */private int err_code;/** * 请求参数 */private String request_args;public String getErr_msg() {return err_msg;}public void setErr_msg(String err_msg) {this.err_msg = err_msg;}public int getErr_code() {return err_code;}public void setErr_code(int err_code) {this.err_code = err_code;}public String getRequest_args() {return request_args;}public void setRequest_args(String request_args) {this.request_args = request_args;}}