如何解析数据以在Java中创建对象？
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我正在寻找找出如何解析从JSON站点接收到的数据的方法。这是数据的示例。
{ \"weatherObservation\":{
\"clouds\": \"n/a\",
\"weatherCondition\": \"n/a\",
\"observation\": \"KIAD 181852Z 18005KT 10SM CLR 21/06 A2992 RMK AO2 SLP132 T02110056\",
\"windDirection\": 180,
\"ICAO\": \"KIAD\",
\"seaLevelPressure\": 1013.2,
\"elevation\": 93,
\"countryCode\": \"US\",
\"lng\": -77.45,
\"temperature\": \"21.1\",
\"dewPoint\": \"5.6\",
\"windSpeed\": \"05\",
\"humidity\": 36,
\"stationName\": \"Washington DC, Washington-Dulles International Airport\",
\"datetime\": \"2011-04-18 18:52:00\",
\"lat\": 38.93333333333333 }}
public class ICAO {
String clouds;
String weatherCondition;
String observation;
int windDirection;
String ICAOid;
int seaLevelPressure;
int elevation;
String countryCode;
double lng;
double temperature;
double dewpoint;
int windSpeed;
int humidity;
String stationName;
String date;
double lat;
public ICAO(String _clouds,String _weatherCondition,String _observation,int _windDirection,String _ICAOid,int _seaLevelPressure,int _elevation, String _countryCode,
double _lng, double _temperature, double _dewpoint, int _windSpeed, int _humidity, String _stationName, String _date, double _lat)
{
clouds = _clouds;
weatherCondition = _weatherCondition;
observation = _observation;
windDirection = _windDirection;
ICAOid = _ICAOid;
seaLevelPressure = _seaLevelPressure;
elevation = _elevation;
countryCode = _countryCode;
lng = _lng;
temperature = _temperature;
dewpoint = _dewpoint;
windSpeed = _windSpeed;
humidity = _humidity;
stationName = _stationName;
date = _date;
lat = _lat;
}
没有找到相关结果
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功飘
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import javax.xml.bind.annotation.XmlAccessorType; import javax.xml.bind.annotation.XmlAccessType; import javax.xml.bind.annotation.XmlElement; import javax.xml.bind.annotation.XmlRootElement; @XmlRootElement(name=\"weatherObservation\") @XmlAccessorType(XmlAccessType.FIELD) public class ICAO { String clouds; String weatherCondition; String observation; int windDirection; @XmlElement(name=\"ICAO\") String ICAOid; int seaLevelPressure; int elevation; String countryCode; double lng; double temperature; double dewpoint; int windSpeed; int humidity; String stationName; @XmlElement(name=\"datetime\") String date; double lat; }import javax.xml.bind.JAXBContext; import javax.xml.bind.Marshaller; import javax.xml.bind.Unmarshaller; import javax.xml.stream.XMLStreamReader; import org.codehaus.jettison.json.JSONObject; import org.codehaus.jettison.mapped.Configuration; import org.codehaus.jettison.mapped.MappedNamespaceConvention; import org.codehaus.jettison.mapped.MappedXMLStreamReader; public class Demo { public static void main(String[] args) throws Exception { JAXBContext jc = JAXBContext.newInstance(ICAO.class); JSONObject obj = new JSONObject(\"{\\\"weatherObservation\\\":{\\\"clouds\\\": \\\"n/a\\\",\\\"weatherCondition\\\": \\\"n/a\\\",\\\"observation\\\": \\\"KIAD 181852Z 18005KT 10SM CLR 21/06 A2992 RMK AO2 SLP132 T02110056\\\",\\\"windDirection\\\": 180,\\\"ICAO\\\": \\\"KIAD\\\",\\\"seaLevelPressure\\\": 1013.2,\\\"elevation\\\": 93,\\\"countryCode\\\": \\\"US\\\",\\\"lng\\\": -77.45,\\\"temperature\\\": \\\"21.1\\\",\\\"dewPoint\\\": \\\"5.6\\\",\\\"windSpeed\\\": \\\"05\\\",\\\"humidity\\\": 36,\\\"stationName\\\": \\\"Washington DC, Washington-Dulles International Airport\\\",\\\"datetime\\\": \\\"2011-04-18 18:52:00\\\",\\\"lat\\\": 38.93333333333333 }}\"); Configuration config = new Configuration(); MappedNamespaceConvention con = new MappedNamespaceConvention(config); XMLStreamReader xmlStreamReader = new MappedXMLStreamReader(obj, con); Unmarshaller unmarshaller = jc.createUnmarshaller(); ICAO icao = (ICAO) unmarshaller.unmarshal(xmlStreamReader); Marshaller marshaller = jc.createMarshaller(); marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); marshaller.marshal(icao, System.out); } }爆刺疤灯
疾很毋悲
筷啸够对铅
其中data是JSON数据的字符串表示形式。从那里可以使用以下方法： get（String）-获得一个特定的 属性。 keys（）-获得一个枚举 翻译的密钥。 我过去所做的就是在您的自定义对象中创建一个构造函数，该构造函数接收JSON格式的数据，并使用此方法将期望的字段解析为实例变量。