JAVA - eine XML-Datei in Map Parsing FasterXml.Jackson mit

Question

Ich habe die folgende XML-Datei:

<?xml version="1.0" encoding="UTF-8"?> 
<Site xmlns="bla" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" id="0" affiliations="foo" status="OPERATIONAL" color="#DB2253" updateTime="2002-12-17T09:30:47.0Z" name="GFB_0035" subject="GF"> 
    <location> 
     <vertices Lat="41.905889" Lon="12.452019"/> 
     <vertices Lat="41.905973" Lon="12.453596"/> 
     <vertices Lat="41.905206" Lon="12.453707"/> 
     <vertices Lat="41.905058" Lon="12.452109"/> 
    </location> 
</Site> 

ich FasterXml.Jackson bin mit den Daten in ein Map<String, Object> Objekt mit dem folgenden Code zu analysieren:

XmlMapper xmlMapper = new XmlMapper(); 
Map<String, Object> data = xmlMapper.readValue(new File(xmlFile), Map.class); 

Wenn ich jedoch auf den Inhalt des Feldes "location" schaue, habe ich nur einen Scheitelpunkt anstelle von vier (der letzte).

UPDATE: Die Karte Objekt, das ich aussieht wie das unten erhalten:

{id=0, affiliations=foo, status=OPERATIONAL, color=#DB2253, updateTime=2002-12-17T09:30:47.0Z, name=GFB_0035, subject=GF, location={vertices={Lat=41.905058, Lon=12.452109}}} 

Gibt es eine Möglichkeit, alle vier Einträge zu bekommen FasterXml.Jackson mit?

Answer 1

Nach Java Documentation -

Eine Karte kann nicht doppelten Schlüssel enthält; Jeder Schlüssel kann höchstens einem Wert zugeordnet werden.

Und deshalb, wenn Sie den Inhalt des Feldes "Ort" betrachten, haben Sie nur einen Scheitelpunkt anstelle von vier (der letzte).

Ich denke, Sie sollten die XML in Ihre eigenen Klassen zu analysieren, anstatt sie in Karte

Siehe unten Beispiel speichern -

import java.io.IOException; 

import com.fasterxml.jackson.core.JsonParseException; 
import com.fasterxml.jackson.databind.JsonMappingException; 
import com.fasterxml.jackson.dataformat.xml.XmlMapper; 

public class Stack { 


    public static void main(String[] args) throws JsonParseException, JsonMappingException, IOException { 

     String xmlFile = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" 
       + "<Site xmlns=\"bla\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" id=\"0\" affiliations=\"foo\"" 
       + " status=\"OPERATIONAL\" color=\"#DB2253\" updateTime=\"2002-12-17T09:30:47.0Z\" name=\"GFB_0035\" " 
       + "subject=\"GF\">" 
       + " <location>" 
       + "  <vertices lat=\"41.905889\" lon=\"12.452019\"/>" 
       + "  <vertices lat=\"41.905973\" lon=\"12.453596\"/>" 
       + "  <vertices lat=\"41.905206\" lon=\"12.453707\"/>" 
       + "  <vertices lat=\"41.905058\" lon=\"12.452109\"/>" 
       + " </location>" 
       + "</Site>"; 

     XmlMapper mapper = new XmlMapper(); 
     SiteData site = mapper.readValue(xmlFile, SiteData.class); 
     System.out.println(site); 
    } 

} 

SiteData.java

import com.fasterxml.jackson.xml.annotate.JacksonXmlProperty; 
import com.fasterxml.jackson.xml.annotate.JacksonXmlRootElement; 

@JacksonXmlRootElement(localName = "Site") 
public class SiteData { 

    private String id; 

    private String affiliations; 

    private String status; 

    private String color; 

    private String updateTime; 

    private String name; 

    private String subject; 

    @JacksonXmlProperty(localName = "location") 
    private LocationData location; 

    public String getId() { 
     return id; 
    } 

    public void setIdValue(String id) { 
     this.id = id; 
    } 

    public String getAffiliations() { 
     return affiliations; 
    } 

    public void setAffiliations(String affiliations) { 
     this.affiliations = affiliations; 
    } 

    public String getStatus() { 
     return status; 
    } 

    public void setStatus(String status) { 
     this.status = status; 
    } 

    public String getColor() { 
     return color; 
    } 

    public void setColor(String color) { 
     this.color = color; 
    } 

    public String getUpdateTime() { 
     return updateTime; 
    } 

    public void setUpdateTime(String updateTime) { 
     this.updateTime = updateTime; 
    } 

    public String getName() { 
     return name; 
    } 

    public void setName(String name) { 
     this.name = name; 
    } 

    public String getSubject() { 
     return subject; 
    } 

    public void setSubject(String subject) { 
     this.subject = subject; 
    } 

    public LocationData getLocation() { 
     return location; 
    } 

    public void setLocation(LocationData location) { 
     this.location = location; 
    } 

    @Override 
    public String toString() { 
     return "Site [id=" + id + ", affiliations=" + affiliations 
       + ", status=" + status + ", color=" + color + ", updateTime=" 
       + updateTime + ", name=" + name + ", subject=" + subject 
       + ", locations=" + location + "]"; 
    } 
} 

location. Java

import java.util.List; 

import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlElementWrapper; 

public class LocationData { 

    @JacksonXmlElementWrapper(useWrapping=false) 
    private List<VerticesData> vertices; 

    public List<VerticesData> getVertices() { 
     return vertices; 
    } 

    public void setVertices(List<VerticesData> vertices) { 
     this.vertices = vertices; 
    } 

    @Override 
    public String toString() { 
     return "LocationData [vertices=" + vertices + "]"; 
    } 

} 

VerticesData.java

public class VerticesData { 

    private String lat; 

    private String lon; 

    public String getLat() { 
     return lat; 
    } 

    public void setLat(String lat) { 
     this.lat = lat; 
    } 

    public String getLon() { 
     return lon; 
    } 

    public void setLon(String lon) { 
     this.lon = lon; 
    } 

    @Override 
    public String toString() { 
     return "Vertices [lat=" + lat + ", lon=" + lon + "]"; 
    } 

} 

Ausgang:

Site [id=0, affiliations=foo, status=OPERATIONAL, color=#DB2253, updateTime=2002-12-17T09:30:47.0Z, name=GFB_0035, subject=GF, locations=LocationData [vertices=[Vertices [lat=41.905889, lon=12.452019], Vertices [lat=41.905973, lon=12.453596], Vertices [lat=41.905206, lon=12.453707], Vertices [lat=41.905058, lon=12.452109]]]]