[英]JAXB - how to unmarshall this XML?
我想使用JaxB將一些漂亮的討厭的XML解組到Java對象。 到目前為止,大多數功能似乎都非常簡單-但我對此有些固執:
<assets>
<asset type="fixed">74,414</asset>
<asset type="current">1,022,069</asset>
<asset type="other">0</asset>
<total type="assets">1,096,483</total>
</assets>
這是dtd的相關部分
<!ELEMENT assets (asset|total)*> <!ELEMENT asset (#PCDATA)> <!ATTLIST asset type CDATA #REQUIRED> <!ELEMENT total (#PCDATA)> <!ATTLIST total type CDATA #REQUIRED>
有任何想法嗎? 還是應該放棄嘗試使用JAXB?
謝謝
通過查看XML和DTD,我創建了該結構的XSD:
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified">
<xs:element name="assets">
<xs:complexType>
<xs:sequence>
<xs:element maxOccurs="unbounded" ref="asset"/>
<xs:element maxOccurs="unbounded" ref="total"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="asset">
<xs:complexType mixed="true">
<xs:attribute name="type" use="required" type="xs:string"/>
</xs:complexType>
</xs:element>
<xs:element name="total">
<xs:complexType mixed="true">
<xs:attribute name="type" use="required" type="xs:string"/>
</xs:complexType>
</xs:element>
</xs:schema>
使用xjc從XSD生成用JAXB綁定注釋注釋的Java類。 然后使用解組器將其解組到Java對象。
編輯
生成的Java類:
import java.util.ArrayList;
import java.util.List;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlValue;
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
"asset",
"total"
})
@XmlRootElement(name = "assets")
public class Assets {
@XmlElement(required = true)
protected List<Asset> asset;
@XmlElement(required = true)
protected List<Total> total;
public List<Asset> getAsset() {
if (asset == null) {
asset = new ArrayList<Asset>();
}
return this.asset;
}
public List<Total> getTotal() {
if (total == null) {
total = new ArrayList<Total>();
}
return this.total;
}
}
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
"content"
})
@XmlRootElement(name = "asset")
public class Asset {
@XmlValue
protected String content;
@XmlAttribute(required = true)
protected String type;
public String getContent() {
return content;
}
public void setContent(String value) {
this.content = value;
}
public String getType() {
return type;
}
public void setType(String value) {
this.type = value;
}
}
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
"content"
})
@XmlRootElement(name = "total")
public class Total {
@XmlValue
protected String content;
@XmlAttribute(required = true)
protected String type;
public String getContent() {
return content;
}
public void setContent(String value) {
this.content = value;
}
public String getType() {
return type;
}
public void setType(String value) {
this.type = value;
}
}
您有要取消編排的課程嗎? 聽起來它需要以下各項:
/** AssetContainer */
@XmlRootElement(namespace = "project/schema")
@XmlAccessorType(XmlAccessType.FIELD)
public class AssetContainer implements Unmarshallable {
private List<Asset> assetList;
private int totalAssets;
}
/** Asset */
@XmlType
@XmlAccessorType(XmlAccessType.FIELD)
public class Asset implements Unmarshallable {
private AssetTypeEnum type;
private int count;
}
/** Unmarshallable */
public interface Unmarshallable {
// Marker interface
}
然后使用XmlTypeAdapter將XML元素映射到適當的類。
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