使用XML文档Java中的属性创建类的实例 import java.io.IOException； 导入java.util.Vector； 导入javax.xml.parsers.DocumentBuilder； 导入javax.xml.parsers.DocumentBuilderFactory； 导入org.w3c.dom.Document； 导入org.w3c.dom.Element； 导入org.w3c.dom.Node； 导入org.w3c.dom.NodeList； 导入org.xml.sax.SAXException； 导入buildingInfo.Level； 公共类XmlParser{ 公共静态void main（字符串[]args）{ DocumentBuilderFactory工厂=DocumentBuilderFactory.newInstance（）； 向量VL=新向量（30）； 试一试{ DocumentBuilder=factory.newDocumentBuilder（）； Document doc=builder.parse（“C:\\Users\\BeatriceGhetel\\workspace\\IPProject\\src\\configuration\\Configure.xml”）； nodelistitemlist=doc.getElementsByTagName（“级别”）； 对于（int i=0；i我不会直接使用DOMAPI来实现这一点。此用例就是commons消化器的用途：
我尝试创建一个建筑模型，从配置的XML文档中获取属性。我的问题是，我无法区分房间的高度或门的高度，而且它也不总是取高度，它有时取其他值，比如长度而不是高度。我还需要弄清楚如何创建房间集合，以及如何为嵌套项（如门）创建对象。我永远不会直接使用DOM Api来实现这一点。此用例就是commons消化器的用途： 另外，Dom4J是一种处理DOM树的更为Java友好的方法，您可以使用简单的迭代器来处理嵌套元素使用XML文档Java中的属性创建类的实例 import java.io.IOException； 导入java.util.Vector； 导入javax.xml.parsers.DocumentBuilder； 导入javax.xml.parsers.DocumentBuilderFactory； 导入org.w3c.dom.Document； 导入org.w3c.dom.Element； 导入org.w3c.dom.Node； 导入org.w3c.dom.NodeList； 导入org.xml.sax.SAXException； 导入buildingInfo.Level； 公共类XmlParser{ 公共静态void main（字符串[]args）{ DocumentBuilderFactory工厂=DocumentBuilderFactory.newInstance（）； 向量VL=新向量（30）； 试一试{ DocumentBuilder=factory.newDocumentBuilder（）； Document doc=builder.parse（“C:\\Users\\BeatriceGhetel\\workspace\\IPProject\\src\\configuration\\Configure.xml”）； nodelistitemlist=doc.getElementsByTagName（“级别”）； 对于（int i=0；i我不会直接使用DOMAPI来实现这一点。此用例就是commons消化器的用途：,java,xml,parsing,Java,Xml,Parsing,我尝试创建一个建筑模型，从配置的XML文档中获取属性。我的问题是，我无法区分房间的高度或门的高度，而且它也不总是取高度，它有时取其他值，比如长度而不是高度。我还需要弄清楚如何创建房间集合，以及如何为嵌套项（如门）创建对象。我永远不会直接使用DOM Api来实现这一点。此用例就是commons消化器的用途： 另外，Dom4J是一种处理DOM树的更为Java友好的方法，您可以使用简单的迭代器来处理嵌套元素 P>使用的标准W3C DOM API是为了在java、C++和JavaScript Irc之
<> P>使用的标准W3C DOM API是为了在java、C++和JavaScript Irc之间有一个通用的API，所以直接使用它是非常复杂的，正如你已经注意到的。 < P>我不会直接使用DOMAPI来实现这一点。此用例就是commons消化器的用途： 另外，Dom4J是一种处理DOM树的更为Java友好的方法，您可以使用简单的迭代器来处理嵌套元素
<> P>使用的标准W3C DOM API旨在在java、C++和JavaScript Irc之间有一个通用的API，所以直接使用它是非常复杂的，正如您已经注意到的。
JAXB是解析XML对象的最简单的方法之一。只要定义java类结构来匹配XML结构就可以了。它还以更简单的方式支持集合（XML元素数组）。我已经开发了解析给定XML的代码（稍微修改了XML，以显示如何处理Level/Room/Door中的集合）。希望它能帮助你
XML文件-Base.XML import java.io.IOException;
import java.util.Vector;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import buildingInfo.Level;
public class XmlParser {
public static void main(String[] args) {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
Vector<Level> vLvl = new Vector<Level>(30);
try {
DocumentBuilder builder = factory.newDocumentBuilder();
Document doc = builder.parse("C:\\Users\\BeatriceGhetel\\workspace\\IPProject\\src\\configuration\\Configure.xml");
NodeList itemList = doc.getElementsByTagName("LEVEL");
for (int i = 0; i < itemList.getLength(); i++) {
Node it = itemList.item(i);
if (it.getNodeType()==Node.ELEMENT_NODE) {
Element el = (Element) it;
NodeList L = el.getChildNodes();
for (int j=0; j< L.getLength(); j++) {
Node n = L.item(j);
if (n.getNodeType()==Node.ELEMENT_NODE) {
buildingInfo.Level Lvl = new BuildingInfo.Level();
if (n.getNodeName().matches("HEIGHT")) {
Lvl.Height = Float.parseFloat(n.getTextContent());
}
System.out.println(Lvl.Height + " inaltime nivel");
Element e = (Element) n;
}
}
}
}
} catch (Exception ex){
ex.printStackTrace();
}
}
}
<BUILDING>
<LEVEL>
<LABEL> 0 </LABEL>
<HEIGHT> 2.5 </HEIGHT>
<WIDTH> 9 </WIDTH>
<LENGHT> 8 </LENGHT>
<CAPACITY> 120 </CAPACITY>
<ROOM>
<LABEL> 1 </LABEL>
<TYPE> NORMALROOM </TYPE>
<HEIGHT> 2.5 </HEIGHT>
<WIDTH> 5 </WIDTH>
<LENGTH> 5 </LENGTH>
<CAPACITY> 40 </CAPACITY>
<SPRINKLER> YES </SPRINKLER>
<SMOKEDETECTOR> YES </SMOKEDETECTOR>
<EXTINGUISHERNUMBER> 2 </EXTINGUISHERNUMBER>
<DOORNUMBER> 1 </DOORNUMBER>
<DOOR>
<ID> 1 </ID>
<TYPE > EXTERNAL </TYPE >
<CAPACITY> 2 </CAPACITY>
<POSITION> NORTH </POSITION>
</DOOR>
</ROOM>
<?xml version="1.0" encoding="UTF-8"?>
<BUILDING>
<LEVEL>
<LABEL>0</LABEL>
<HEIGHT>2.5</HEIGHT>
<WIDTH>9</WIDTH>
<LENGHT>8</LENGHT>
<CAPACITY>120</CAPACITY>
<ROOM>
<LABEL>1</LABEL>
<TYPE>NORMALROOM</TYPE>
<HEIGHT>2.5</HEIGHT>
<WIDTH>5</WIDTH>
<LENGTH>5</LENGTH>
<CAPACITY>40</CAPACITY>
<SPRINKLER>YES</SPRINKLER>
<SMOKEDETECTOR>YES</SMOKEDETECTOR>
<EXTINGUISHERNUMBER>2</EXTINGUISHERNUMBER>
<DOORNUMBER>1</DOORNUMBER>
<DOOR>
<ID>1</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>2</CAPACITY>
<POSITION>NORTH</POSITION>
</DOOR>
<DOOR>
<ID>2</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>1</CAPACITY>
<POSITION>SOUTH</POSITION>
</DOOR>
</ROOM>
<ROOM>
<LABEL>2</LABEL>
<TYPE>DELUXEROOM</TYPE>
<HEIGHT>2.5</HEIGHT>
<WIDTH>5</WIDTH>
<LENGTH>5</LENGTH>
<CAPACITY>80</CAPACITY>
<SPRINKLER>YES</SPRINKLER>
<SMOKEDETECTOR>YES</SMOKEDETECTOR>
<EXTINGUISHERNUMBER>2</EXTINGUISHERNUMBER>
<DOORNUMBER>1</DOORNUMBER>
<DOOR>
<ID>3</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>2</CAPACITY>
<POSITION>NORTH</POSITION>
</DOOR>
<DOOR>
<ID>4</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>1</CAPACITY>
<POSITION>SOUTH</POSITION>
</DOOR>
</ROOM>
</LEVEL>
</BUILDING>
@XmlRootElement(name = "BUILDING")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlSeeAlso({ Level.class })
public class Building {
@XmlElement(name = "LEVEL")
private Level levels[];
public Level[] getLevels() {
return levels;
}
public void setLevels(Level[] levels) {
this.levels = levels;
}
@Override
public String toString() {
return "Building [levels=" + Arrays.toString(levels) + "]";
}
}
@XmlRootElement(name = "DOOR")
@XmlAccessorType(XmlAccessType.FIELD)
public class Door {
@XmlElement(name="ID")
private String id;
@XmlElement(name="TYPE")
private String type;
@XmlElement(name="CAPACITY")
private String capacity;
@XmlElement(name="POSITION")
private String position;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getCapacity() {
return capacity;
}
public void setCapacity(String capacity) {
this.capacity = capacity;
}
public String getPosition() {
return position;
}
public void setPosition(String position) {
this.position = position;
}
@Override
public String toString() {
return "Door [id=" + id + ", type=" + type + ", capacity=" + capacity
+ ", position=" + position + "]";
}
}
@XmlRootElement(name="LEVEL")
@XmlSeeAlso({Room.class})
@XmlAccessorType(XmlAccessType.FIELD)
public class Level {
@XmlElement(name="LABEL")
private String Label;
@XmlElement(name="HEIGHT")
private String Height;
@XmlElement(name="ROOM")
private Room rooms[];
public Room[] getRoom() {
return rooms;
}
public void setRoom(Room[] room) {
this.rooms = room;
}
public String getLabel() {
return Label;
}
public void setLabel(String label) {
Label = label;
}
public String getHeight() {
return Height;
}
public void setHeight(String height) {
Height = height;
}
@Override
public String toString() {
return "Level [Label=" + Label + ", Height=" + Height + ", rooms="
+ Arrays.toString(rooms) + "]";
}
}
public class JAXBParser {
public static void main(String args[]) throws JAXBException{
File file = new File("C:\\XMLParserDemo\\src\\Base.xml");
JAXBContext jaxbContext = JAXBContext.newInstance(Building.class);
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
Building building = (Building) jaxbUnmarshaller.unmarshal(file);
System.out.println(building);
}
<?xml version="1.0" encoding="UTF-8"?>
<BUILDING>
<LEVEL>
<LABEL>0</LABEL>
<HEIGHT>2.5</HEIGHT>
<WIDTH>9</WIDTH>
<LENGHT>8</LENGHT>
<CAPACITY>120</CAPACITY>
<ROOM>
<LABEL>1</LABEL>
<TYPE>NORMALROOM</TYPE>
<HEIGHT>2.5</HEIGHT>
<WIDTH>5</WIDTH>
<LENGTH>5</LENGTH>
<CAPACITY>40</CAPACITY>
<SPRINKLER>YES</SPRINKLER>
<SMOKEDETECTOR>YES</SMOKEDETECTOR>
<EXTINGUISHERNUMBER>2</EXTINGUISHERNUMBER>
<DOORNUMBER>1</DOORNUMBER>
<DOOR>
<ID>1</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>2</CAPACITY>
<POSITION>NORTH</POSITION>
</DOOR>
<DOOR>
<ID>2</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>1</CAPACITY>
<POSITION>SOUTH</POSITION>
</DOOR>
</ROOM>
<ROOM>
<LABEL>2</LABEL>
<TYPE>DELUXEROOM</TYPE>
<HEIGHT>2.5</HEIGHT>
<WIDTH>5</WIDTH>
<LENGTH>5</LENGTH>
<CAPACITY>80</CAPACITY>
<SPRINKLER>YES</SPRINKLER>
<SMOKEDETECTOR>YES</SMOKEDETECTOR>
<EXTINGUISHERNUMBER>2</EXTINGUISHERNUMBER>
<DOORNUMBER>1</DOORNUMBER>
<DOOR>
<ID>3</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>2</CAPACITY>
<POSITION>NORTH</POSITION>
</DOOR>
<DOOR>
<ID>4</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>1</CAPACITY>
<POSITION>SOUTH</POSITION>
</DOOR>
</ROOM>
</LEVEL>
</BUILDING>
@XmlRootElement(name = "BUILDING")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlSeeAlso({ Level.class })
public class Building {
@XmlElement(name = "LEVEL")
private Level levels[];
public Level[] getLevels() {
return levels;
}
public void setLevels(Level[] levels) {
this.levels = levels;
}
@Override
public String toString() {
return "Building [levels=" + Arrays.toString(levels) + "]";
}
}
@XmlRootElement(name = "DOOR")
@XmlAccessorType(XmlAccessType.FIELD)
public class Door {
@XmlElement(name="ID")
private String id;
@XmlElement(name="TYPE")
private String type;
@XmlElement(name="CAPACITY")
private String capacity;
@XmlElement(name="POSITION")
private String position;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getCapacity() {
return capacity;
}
public void setCapacity(String capacity) {
this.capacity = capacity;
}
public String getPosition() {
return position;
}
public void setPosition(String position) {
this.position = position;
}
@Override
public String toString() {
return "Door [id=" + id + ", type=" + type + ", capacity=" + capacity
+ ", position=" + position + "]";
}
}
@XmlRootElement(name="LEVEL")
@XmlSeeAlso({Room.class})
@XmlAccessorType(XmlAccessType.FIELD)
public class Level {
@XmlElement(name="LABEL")
private String Label;
@XmlElement(name="HEIGHT")
private String Height;
@XmlElement(name="ROOM")
private Room rooms[];
public Room[] getRoom() {
return rooms;
}
public void setRoom(Room[] room) {
this.rooms = room;
}
public String getLabel() {
return Label;
}
public void setLabel(String label) {
Label = label;
}
public String getHeight() {
return Height;
}
public void setHeight(String height) {
Height = height;
}
@Override
public String toString() {
return "Level [Label=" + Label + ", Height=" + Height + ", rooms="
+ Arrays.toString(rooms) + "]";
}
}
public class JAXBParser {
public static void main(String args[]) throws JAXBException{
File file = new File("C:\\XMLParserDemo\\src\\Base.xml");
JAXBContext jaxbContext = JAXBContext.newInstance(Building.class);
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
Building building = (Building) jaxbUnmarshaller.unmarshal(file);
System.out.println(building);
}
<?xml version="1.0" encoding="UTF-8"?>
<BUILDING>
<LEVEL>
<LABEL>0</LABEL>
<HEIGHT>2.5</HEIGHT>
<WIDTH>9</WIDTH>
<LENGHT>8</LENGHT>
<CAPACITY>120</CAPACITY>
<ROOM>
<LABEL>1</LABEL>
<TYPE>NORMALROOM</TYPE>
<HEIGHT>2.5</HEIGHT>
<WIDTH>5</WIDTH>
<LENGTH>5</LENGTH>
<CAPACITY>40</CAPACITY>
<SPRINKLER>YES</SPRINKLER>
<SMOKEDETECTOR>YES</SMOKEDETECTOR>
<EXTINGUISHERNUMBER>2</EXTINGUISHERNUMBER>
<DOORNUMBER>1</DOORNUMBER>
<DOOR>
<ID>1</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>2</CAPACITY>
<POSITION>NORTH</POSITION>
</DOOR>
<DOOR>
<ID>2</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>1</CAPACITY>
<POSITION>SOUTH</POSITION>
</DOOR>
</ROOM>
<ROOM>
<LABEL>2</LABEL>
<TYPE>DELUXEROOM</TYPE>
<HEIGHT>2.5</HEIGHT>
<WIDTH>5</WIDTH>
<LENGTH>5</LENGTH>
<CAPACITY>80</CAPACITY>
<SPRINKLER>YES</SPRINKLER>
<SMOKEDETECTOR>YES</SMOKEDETECTOR>
<EXTINGUISHERNUMBER>2</EXTINGUISHERNUMBER>
<DOORNUMBER>1</DOORNUMBER>
<DOOR>
<ID>3</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>2</CAPACITY>
<POSITION>NORTH</POSITION>
</DOOR>
<DOOR>
<ID>4</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>1</CAPACITY>
<POSITION>SOUTH</POSITION>
</DOOR>
</ROOM>
</LEVEL>
</BUILDING>
@XmlRootElement(name = "BUILDING")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlSeeAlso({ Level.class })
public class Building {
@XmlElement(name = "LEVEL")
private Level levels[];
public Level[] getLevels() {
return levels;
}
public void setLevels(Level[] levels) {
this.levels = levels;
}
@Override
public String toString() {
return "Building [levels=" + Arrays.toString(levels) + "]";
}
}
@XmlRootElement(name = "DOOR")
@XmlAccessorType(XmlAccessType.FIELD)
public class Door {
@XmlElement(name="ID")
private String id;
@XmlElement(name="TYPE")
private String type;
@XmlElement(name="CAPACITY")
private String capacity;
@XmlElement(name="POSITION")
private String position;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getCapacity() {
return capacity;
}
public void setCapacity(String capacity) {
this.capacity = capacity;
}
public String getPosition() {
return position;
}
public void setPosition(String position) {
this.position = position;
}
@Override
public String toString() {
return "Door [id=" + id + ", type=" + type + ", capacity=" + capacity
+ ", position=" + position + "]";
}
}
@XmlRootElement(name="LEVEL")
@XmlSeeAlso({Room.class})
@XmlAccessorType(XmlAccessType.FIELD)
public class Level {
@XmlElement(name="LABEL")
private String Label;
@XmlElement(name="HEIGHT")
private String Height;
@XmlElement(name="ROOM")
private Room rooms[];
public Room[] getRoom() {
return rooms;
}
public void setRoom(Room[] room) {
this.rooms = room;
}
public String getLabel() {
return Label;
}
public void setLabel(String label) {
Label = label;
}
public String getHeight() {
return Height;
}
public void setHeight(String height) {
Height = height;
}
@Override
public String toString() {
return "Level [Label=" + Label + ", Height=" + Height + ", rooms="
+ Arrays.toString(rooms) + "]";
}
}
public class JAXBParser {
public static void main(String args[]) throws JAXBException{
File file = new File("C:\\XMLParserDemo\\src\\Base.xml");
JAXBContext jaxbContext = JAXBContext.newInstance(Building.class);
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
Building building = (Building) jaxbUnmarshaller.unmarshal(file);
System.out.println(building);
}
<?xml version="1.0" encoding="UTF-8"?>
<BUILDING>
<LEVEL>
<LABEL>0</LABEL>
<HEIGHT>2.5</HEIGHT>
<WIDTH>9</WIDTH>
<LENGHT>8</LENGHT>
<CAPACITY>120</CAPACITY>
<ROOM>
<LABEL>1</LABEL>
<TYPE>NORMALROOM</TYPE>
<HEIGHT>2.5</HEIGHT>
<WIDTH>5</WIDTH>
<LENGTH>5</LENGTH>
<CAPACITY>40</CAPACITY>
<SPRINKLER>YES</SPRINKLER>
<SMOKEDETECTOR>YES</SMOKEDETECTOR>
<EXTINGUISHERNUMBER>2</EXTINGUISHERNUMBER>
<DOORNUMBER>1</DOORNUMBER>
<DOOR>
<ID>1</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>2</CAPACITY>
<POSITION>NORTH</POSITION>
</DOOR>
<DOOR>
<ID>2</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>1</CAPACITY>
<POSITION>SOUTH</POSITION>
</DOOR>
</ROOM>
<ROOM>
<LABEL>2</LABEL>
<TYPE>DELUXEROOM</TYPE>
<HEIGHT>2.5</HEIGHT>
<WIDTH>5</WIDTH>
<LENGTH>5</LENGTH>
<CAPACITY>80</CAPACITY>
<SPRINKLER>YES</SPRINKLER>
<SMOKEDETECTOR>YES</SMOKEDETECTOR>
<EXTINGUISHERNUMBER>2</EXTINGUISHERNUMBER>
<DOORNUMBER>1</DOORNUMBER>
<DOOR>
<ID>3</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>2</CAPACITY>
<POSITION>NORTH</POSITION>
</DOOR>
<DOOR>
<ID>4</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>1</CAPACITY>
<POSITION>SOUTH</POSITION>
</DOOR>
</ROOM>
</LEVEL>
</BUILDING>
@XmlRootElement(name = "BUILDING")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlSeeAlso({ Level.class })
public class Building {
@XmlElement(name = "LEVEL")
private Level levels[];
public Level[] getLevels() {
return levels;
}
public void setLevels(Level[] levels) {
this.levels = levels;
}
@Override
public String toString() {
return "Building [levels=" + Arrays.toString(levels) + "]";
}
}
@XmlRootElement(name = "DOOR")
@XmlAccessorType(XmlAccessType.FIELD)
public class Door {
@XmlElement(name="ID")
private String id;
@XmlElement(name="TYPE")
private String type;
@XmlElement(name="CAPACITY")
private String capacity;
@XmlElement(name="POSITION")
private String position;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getCapacity() {
return capacity;
}
public void setCapacity(String capacity) {
this.capacity = capacity;
}
public String getPosition() {
return position;
}
public void setPosition(String position) {
this.position = position;
}
@Override
public String toString() {
return "Door [id=" + id + ", type=" + type + ", capacity=" + capacity
+ ", position=" + position + "]";
}
}
@XmlRootElement(name="LEVEL")
@XmlSeeAlso({Room.class})
@XmlAccessorType(XmlAccessType.FIELD)
public class Level {
@XmlElement(name="LABEL")
private String Label;
@XmlElement(name="HEIGHT")
private String Height;
@XmlElement(name="ROOM")
private Room rooms[];
public Room[] getRoom() {
return rooms;
}
public void setRoom(Room[] room) {
this.rooms = room;
}
public String getLabel() {
return Label;
}
public void setLabel(String label) {
Label = label;
}
public String getHeight() {
return Height;
}
public void setHeight(String height) {
Height = height;
}
@Override
public String toString() {
return "Level [Label=" + Label + ", Height=" + Height + ", rooms="
+ Arrays.toString(rooms) + "]";
}
}
public class JAXBParser {
public static void main(String args[]) throws JAXBException{
File file = new File("C:\\XMLParserDemo\\src\\Base.xml");
JAXBContext jaxbContext = JAXBContext.newInstance(Building.class);
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
Building building = (Building) jaxbUnmarshaller.unmarshal(file);
System.out.println(building);
}
JAXB是解析XML对象的最简单方法之一。只要定义java类结构来匹配XML结构就可以了。它还以更简单的方式支持集合（XML元素数组）。我已经开发了解析给定XML的代码（稍微修改了XML，以显示如何处理Level/Room/Door中的集合）。希望它能帮助你 XML文件-Base.XML
import java.io.IOException;
import java.util.Vector;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import buildingInfo.Level;
public class XmlParser {
public static void main(String[] args) {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
Vector<Level> vLvl = new Vector<Level>(30);
try {
DocumentBuilder builder = factory.newDocumentBuilder();
Document doc = builder.parse("C:\\Users\\BeatriceGhetel\\workspace\\IPProject\\src\\configuration\\Configure.xml");
NodeList itemList = doc.getElementsByTagName("LEVEL");
for (int i = 0; i < itemList.getLength(); i++) {
Node it = itemList.item(i);
if (it.getNodeType()==Node.ELEMENT_NODE) {
Element el = (Element) it;
NodeList L = el.getChildNodes();
for (int j=0; j< L.getLength(); j++) {
Node n = L.item(j);
if (n.getNodeType()==Node.ELEMENT_NODE) {
buildingInfo.Level Lvl = new BuildingInfo.Level();
if (n.getNodeName().matches("HEIGHT")) {
Lvl.Height = Float.parseFloat(n.getTextContent());
}
System.out.println(Lvl.Height + " inaltime nivel");
Element e = (Element) n;
}
}
}
}
} catch (Exception ex){
ex.printStackTrace();
}
}
}
<BUILDING>
<LEVEL>
<LABEL> 0 </LABEL>
<HEIGHT> 2.5 </HEIGHT>
<WIDTH> 9 </WIDTH>
<LENGHT> 8 </LENGHT>
<CAPACITY> 120 </CAPACITY>
<ROOM>
<LABEL> 1 </LABEL>
<TYPE> NORMALROOM </TYPE>
<HEIGHT> 2.5 </HEIGHT>
<WIDTH> 5 </WIDTH>
<LENGTH> 5 </LENGTH>
<CAPACITY> 40 </CAPACITY>
<SPRINKLER> YES </SPRINKLER>
<SMOKEDETECTOR> YES </SMOKEDETECTOR>
<EXTINGUISHERNUMBER> 2 </EXTINGUISHERNUMBER>
<DOORNUMBER> 1 </DOORNUMBER>
<DOOR>
<ID> 1 </ID>
<TYPE > EXTERNAL </TYPE >
<CAPACITY> 2 </CAPACITY>
<POSITION> NORTH </POSITION>
</DOOR>
</ROOM>
<?xml version="1.0" encoding="UTF-8"?>
<BUILDING>
<LEVEL>
<LABEL>0</LABEL>
<HEIGHT>2.5</HEIGHT>
<WIDTH>9</WIDTH>
<LENGHT>8</LENGHT>
<CAPACITY>120</CAPACITY>
<ROOM>
<LABEL>1</LABEL>
<TYPE>NORMALROOM</TYPE>
<HEIGHT>2.5</HEIGHT>
<WIDTH>5</WIDTH>
<LENGTH>5</LENGTH>
<CAPACITY>40</CAPACITY>
<SPRINKLER>YES</SPRINKLER>
<SMOKEDETECTOR>YES</SMOKEDETECTOR>
<EXTINGUISHERNUMBER>2</EXTINGUISHERNUMBER>
<DOORNUMBER>1</DOORNUMBER>
<DOOR>
<ID>1</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>2</CAPACITY>
<POSITION>NORTH</POSITION>
</DOOR>
<DOOR>
<ID>2</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>1</CAPACITY>
<POSITION>SOUTH</POSITION>
</DOOR>
</ROOM>
<ROOM>
<LABEL>2</LABEL>
<TYPE>DELUXEROOM</TYPE>
<HEIGHT>2.5</HEIGHT>
<WIDTH>5</WIDTH>
<LENGTH>5</LENGTH>
<CAPACITY>80</CAPACITY>
<SPRINKLER>YES</SPRINKLER>
<SMOKEDETECTOR>YES</SMOKEDETECTOR>
<EXTINGUISHERNUMBER>2</EXTINGUISHERNUMBER>
<DOORNUMBER>1</DOORNUMBER>
<DOOR>
<ID>3</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>2</CAPACITY>
<POSITION>NORTH</POSITION>
</DOOR>
<DOOR>
<ID>4</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>1</CAPACITY>
<POSITION>SOUTH</POSITION>
</DOOR>
</ROOM>
</LEVEL>
</BUILDING>
@XmlRootElement(name = "BUILDING")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlSeeAlso({ Level.class })
public class Building {
@XmlElement(name = "LEVEL")
private Level levels[];
public Level[] getLevels() {
return levels;
}
public void setLevels(Level[] levels) {
this.levels = levels;
}
@Override
public String toString() {
return "Building [levels=" + Arrays.toString(levels) + "]";
}
}
@XmlRootElement(name = "DOOR")
@XmlAccessorType(XmlAccessType.FIELD)
public class Door {
@XmlElement(name="ID")
private String id;
@XmlElement(name="TYPE")
private String type;
@XmlElement(name="CAPACITY")
private String capacity;
@XmlElement(name="POSITION")
private String position;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getCapacity() {
return capacity;
}
public void setCapacity(String capacity) {
this.capacity = capacity;
}
public String getPosition() {
return position;
}
public void setPosition(String position) {
this.position = position;
}
@Override
public String toString() {
return "Door [id=" + id + ", type=" + type + ", capacity=" + capacity
+ ", position=" + position + "]";
}
}
@XmlRootElement(name="LEVEL")
@XmlSeeAlso({Room.class})
@XmlAccessorType(XmlAccessType.FIELD)
public class Level {
@XmlElement(name="LABEL")
private String Label;
@XmlElement(name="HEIGHT")
private String Height;
@XmlElement(name="ROOM")
private Room rooms[];
public Room[] getRoom() {
return rooms;
}
public void setRoom(Room[] room) {
this.rooms = room;
}
public String getLabel() {
return Label;
}
public void setLabel(String label) {
Label = label;
}
public String getHeight() {
return Height;
}
public void setHeight(String height) {
Height = height;
}
@Override
public String toString() {
return "Level [Label=" + Label + ", Height=" + Height + ", rooms="
+ Arrays.toString(rooms) + "]";
}
}
public class JAXBParser {
public static void main(String args[]) throws JAXBException{
File file = new File("C:\\XMLParserDemo\\src\\Base.xml");
JAXBContext jaxbContext = JAXBContext.newInstance(Building.class);
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
Building building = (Building) jaxbUnmarshaller.unmarshal(file);
System.out.println(building);
}
<?xml version="1.0" encoding="UTF-8"?>
<BUILDING>
<LEVEL>
<LABEL>0</LABEL>
<HEIGHT>2.5</HEIGHT>
<WIDTH>9</WIDTH>
<LENGHT>8</LENGHT>
<CAPACITY>120</CAPACITY>
<ROOM>
<LABEL>1</LABEL>
<TYPE>NORMALROOM</TYPE>
<HEIGHT>2.5</HEIGHT>
<WIDTH>5</WIDTH>
<LENGTH>5</LENGTH>
<CAPACITY>40</CAPACITY>
<SPRINKLER>YES</SPRINKLER>
<SMOKEDETECTOR>YES</SMOKEDETECTOR>
<EXTINGUISHERNUMBER>2</EXTINGUISHERNUMBER>
<DOORNUMBER>1</DOORNUMBER>
<DOOR>
<ID>1</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>2</CAPACITY>
<POSITION>NORTH</POSITION>
</DOOR>
<DOOR>
<ID>2</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>1</CAPACITY>
<POSITION>SOUTH</POSITION>
</DOOR>
</ROOM>
<ROOM>
<LABEL>2</LABEL>
<TYPE>DELUXEROOM</TYPE>
<HEIGHT>2.5</HEIGHT>
<WIDTH>5</WIDTH>
<LENGTH>5</LENGTH>
<CAPACITY>80</CAPACITY>
<SPRINKLER>YES</SPRINKLER>
<SMOKEDETECTOR>YES</SMOKEDETECTOR>
<EXTINGUISHERNUMBER>2</EXTINGUISHERNUMBER>
<DOORNUMBER>1</DOORNUMBER>
<DOOR>
<ID>3</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>2</CAPACITY>
<POSITION>NORTH</POSITION>
</DOOR>
<DOOR>
<ID>4</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>1</CAPACITY>
<POSITION>SOUTH</POSITION>
</DOOR>
</ROOM>
</LEVEL>
</BUILDING>
@XmlRootElement(name = "BUILDING")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlSeeAlso({ Level.class })
public class Building {
@XmlElement(name = "LEVEL")
private Level levels[];
public Level[] getLevels() {
return levels;
}
public void setLevels(Level[] levels) {
this.levels = levels;
}
@Override
public String toString() {
return "Building [levels=" + Arrays.toString(levels) + "]";
}
}
@XmlRootElement(name = "DOOR")
@XmlAccessorType(XmlAccessType.FIELD)
public class Door {
@XmlElement(name="ID")
private String id;
@XmlElement(name="TYPE")
private String type;
@XmlElement(name="CAPACITY")
private String capacity;
@XmlElement(name="POSITION")
private String position;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getCapacity() {
return capacity;
}
public void setCapacity(String capacity) {
this.capacity = capacity;
}
public String getPosition() {
return position;
}
public void setPosition(String position) {
this.position = position;
}
@Override
public String toString() {
return "Door [id=" + id + ", type=" + type + ", capacity=" + capacity
+ ", position=" + position + "]";
}
}
@XmlRootElement(name="LEVEL")
@XmlSeeAlso({Room.class})
@XmlAccessorType(XmlAccessType.FIELD)
public class Level {
@XmlElement(name="LABEL")
private String Label;
@XmlElement(name="HEIGHT")
private String Height;
@XmlElement(name="ROOM")
private Room rooms[];
public Room[] getRoom() {
return rooms;
}
public void setRoom(Room[] room) {
this.rooms = room;
}
public String getLabel() {
return Label;
}
public void setLabel(String label) {
Label = label;
}
public String getHeight() {
return Height;
}
public void setHeight(String height) {
Height = height;
}
@Override
public String toString() {
return "Level [Label=" + Label + ", Height=" + Height + ", rooms="
+ Arrays.toString(rooms) + "]";
}
}
public class JAXBParser {
public static void main(String args[]) throws JAXBException{
File file = new File("C:\\XMLParserDemo\\src\\Base.xml");
JAXBContext jaxbContext = JAXBContext.newInstance(Building.class);
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
Building building = (Building) jaxbUnmarshaller.unmarshal(file);
System.out.println(building);
}
<?xml version="1.0" encoding="UTF-8"?>
<BUILDING>
<LEVEL>
<LABEL>0</LABEL>
<HEIGHT>2.5</HEIGHT>
<WIDTH>9</WIDTH>
<LENGHT>8</LENGHT>
<CAPACITY>120</CAPACITY>
<ROOM>
<LABEL>1</LABEL>
<TYPE>NORMALROOM</TYPE>
<HEIGHT>2.5</HEIGHT>
<WIDTH>5</WIDTH>
<LENGTH>5</LENGTH>
<CAPACITY>40</CAPACITY>
<SPRINKLER>YES</SPRINKLER>
<SMOKEDETECTOR>YES</SMOKEDETECTOR>
<EXTINGUISHERNUMBER>2</EXTINGUISHERNUMBER>
<DOORNUMBER>1</DOORNUMBER>
<DOOR>
<ID>1</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>2</CAPACITY>
<POSITION>NORTH</POSITION>
</DOOR>
<DOOR>
<ID>2</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>1</CAPACITY>
<POSITION>SOUTH</POSITION>
</DOOR>
</ROOM>
<ROOM>
<LABEL>2</LABEL>
<TYPE>DELUXEROOM</TYPE>
<HEIGHT>2.5</HEIGHT>
<WIDTH>5</WIDTH>
<LENGTH>5</LENGTH>
<CAPACITY>80</CAPACITY>
<SPRINKLER>YES</SPRINKLER>
<SMOKEDETECTOR>YES</SMOKEDETECTOR>
<EXTINGUISHERNUMBER>2</EXTINGUISHERNUMBER>
<DOORNUMBER>1</DOORNUMBER>
<DOOR>
<ID>3</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>2</CAPACITY>
<POSITION>NORTH</POSITION>
</DOOR>
<DOOR>
<ID>4</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>1</CAPACITY>
<POSITION>SOUTH</POSITION>
</DOOR>
</ROOM>
</LEVEL>
</BUILDING>
@XmlRootElement(name = "BUILDING")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlSeeAlso({ Level.class })
public class Building {
@XmlElement(name = "LEVEL")
private Level levels[];
public Level[] getLevels() {
return levels;
}
public void setLevels(Level[] levels) {
this.levels = levels;
}
@Override
public String toString() {
return "Building [levels=" + Arrays.toString(levels) + "]";
}
}
@XmlRootElement(name = "DOOR")
@XmlAccessorType(XmlAccessType.FIELD)
public class Door {
@XmlElement(name="ID")
private String id;
@XmlElement(name="TYPE")
private String type;
@XmlElement(name="CAPACITY")
private String capacity;
@XmlElement(name="POSITION")
private String position;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getCapacity() {
return capacity;
}
public void setCapacity(String capacity) {
this.capacity = capacity;
}
public String getPosition() {
return position;
}
public void setPosition(String position) {
this.position = position;
}
@Override
public String toString() {
return "Door [id=" + id + ", type=" + type + ", capacity=" + capacity
+ ", position=" + position + "]";
}
}
@XmlRootElement(name="LEVEL")
@XmlSeeAlso({Room.class})
@XmlAccessorType(XmlAccessType.FIELD)
public class Level {
@XmlElement(name="LABEL")
private String Label;
@XmlElement(name="HEIGHT")
private String Height;
@XmlElement(name="ROOM")
private Room rooms[];
public Room[] getRoom() {
return rooms;
}
public void setRoom(Room[] room) {
this.rooms = room;
}
public String getLabel() {
return Label;
}
public void setLabel(String label) {
Label = label;
}
public String getHeight() {
return Height;
}
public void setHeight(String height) {
Height = height;
}
@Override
public String toString() {
return "Level [Label=" + Label + ", Height=" + Height + ", rooms="
+ Arrays.toString(rooms) + "]";
}
}
public class JAXBParser {
public static void main(String args[]) throws JAXBException{
File file = new File("C:\\XMLParserDemo\\src\\Base.xml");
JAXBContext jaxbContext = JAXBContext.newInstance(Building.class);
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
Building building = (Building) jaxbUnmarshaller.unmarshal(file);
System.out.println(building);
}
<?xml version="1.0" encoding="UTF-8"?>
<BUILDING>
<LEVEL>
<LABEL>0</LABEL>
<HEIGHT>2.5</HEIGHT>
<WIDTH>9</WIDTH>
<LENGHT>8</LENGHT>
<CAPACITY>120</CAPACITY>
<ROOM>
<LABEL>1</LABEL>
<TYPE>NORMALROOM</TYPE>
<HEIGHT>2.5</HEIGHT>
<WIDTH>5</WIDTH>
<LENGTH>5</LENGTH>
<CAPACITY>40</CAPACITY>
<SPRINKLER>YES</SPRINKLER>
<SMOKEDETECTOR>YES</SMOKEDETECTOR>
<EXTINGUISHERNUMBER>2</EXTINGUISHERNUMBER>
<DOORNUMBER>1</DOORNUMBER>
<DOOR>
<ID>1</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>2</CAPACITY>
<POSITION>NORTH</POSITION>
</DOOR>
<DOOR>
<ID>2</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>1</CAPACITY>
<POSITION>SOUTH</POSITION>
</DOOR>
</ROOM>
<ROOM>
<LABEL>2</LABEL>
<TYPE>DELUXEROOM</TYPE>
<HEIGHT>2.5</HEIGHT>
<WIDTH>5</WIDTH>
<LENGTH>5</LENGTH>
<CAPACITY>80</CAPACITY>
<SPRINKLER>YES</SPRINKLER>
<SMOKEDETECTOR>YES</SMOKEDETECTOR>
<EXTINGUISHERNUMBER>2</EXTINGUISHERNUMBER>
<DOORNUMBER>1</DOORNUMBER>
<DOOR>
<ID>3</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>2</CAPACITY>
<POSITION>NORTH</POSITION>
</DOOR>
<DOOR>
<ID>4</ID>
<TYPE>EXTERNAL</TYPE>
<CAPACITY>1</CAPACITY>
<POSITION>SOUTH</POSITION>
</DOOR>
</ROOM>
</LEVEL>
</BUILDING>
@XmlRootElement(name = "BUILDING")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlSeeAlso({ Level.class })
public class Building {
@XmlElement(name = "LEVEL")
private Level levels[];
public Level[] getLevels() {
return levels;
}
public void setLevels(Level[] levels) {
this.levels = levels;
}
@Override
public String toString() {
return "Building [levels=" + Arrays.toString(levels) + "]";
}
}
@XmlRootElement(name = "DOOR")
@XmlAccessorType(XmlAccessType.FIELD)
public class Door {
@XmlElement(name="ID")
private String id;
@XmlElement(name="TYPE")
private String type;
@XmlElement(name="CAPACITY")
private String capacity;
@XmlElement(name="POSITION")
private String position;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getCapacity() {
return capacity;
}
public void setCapacity(String capacity) {
this.capacity = capacity;
}
public String getPosition() {
return position;
}
public void setPosition(String position) {
this.position = position;
}
@Override
public String toString() {
return "Door [id=" + id + ", type=" + type + ", capacity=" + capacity
+ ", position=" + position + "]";
}
}
@XmlRootElement(name="LEVEL")
@XmlSeeAlso({Room.class})
@XmlAccessorType(XmlAccessType.FIELD)
public class Level {
@XmlElement(name="LABEL")
private String Label;
@XmlElement(name="HEIGHT")
private String Height;
@XmlElement(name="ROOM")
private Room rooms[];
public Room[] getRoom() {
return rooms;
}
public void setRoom(Room[] room) {
this.rooms = room;
}
public String getLabel() {
return Label;
}
public void setLabel(String label) {
Label = label;
}
public String getHeight() {
return Height;
}
public void setHeight(String height) {
Height = height;
}
@Override
public String toString() {
return "Level [Label=" + Label + ", Height=" + Height + ", rooms="
+ Arrays.toString(rooms) + "]";
}
}
public class JAXBParser {
public static void main(String args[]) throws JAXBException{
File file = new File("C:\\XMLParserDemo\\src\\Base.xml");
JAXBContext jaxbContext = JAXBContext.newInstance(Building.class);
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
Building building = (Building) jaxbUnmarshaller.unmarshal(file);
System.out.println(building);
}
我提到我已经尝试过StackOverflow的其他相关主题我的意思是，我实际上需要一些东西来帮助我确定2.5是关卡的高度，并在遇到房间时停止获取关卡属性，然后知道2.5（可能是一个不同的值，更明显）是房间的高度，所以我可以创建不同的对象。添加了此评论，希望它能让您更好地了解我需要做什么。无论如何，我会尝试使用Digester解析XML，正如第一个答案中所建议的，也许它会帮助解决我的问题。我提到我已经尝试过StackOverflow的其他相关主题，我的意思是，实际上，我需要一些东西来帮助我确定2.5是标高的高度，并在遇到房间时停止获取标高属性，然后知道2.5（可能是一个不同的值，更明显）是房间的高度，因此我可以创建不同的o