問(wèn)題描述
我得到了這個(gè) XML 結(jié)構(gòu):
<Tax>
<Money currency="USD">0.00</Money>
<Description xml:lang="en">
17.5% Non-Recoverable
<ShortName>vatspecial</ShortName>
</Description>
</Tax>
注意 Description 節(jié)點(diǎn)有 MixedContent (由文本和 XML 組成) 這是 XSD 部分關(guān)于 Description 節(jié)點(diǎn):
Notice that Description node has MixedContent (composed with text and XML) and this is the XSD part regarding Description node:
<xsd:complexType name="TaxDescriptionType">
<xsd:sequence>
<xsd:element name="ShortName" type="xsd:string" />
</xsd:sequence>
<xsd:attribute ref="xml:lang" />
</xsd:complexType>
此時(shí)一切正常，XJC 輸出與 TaxDescriptionType 類(lèi)似的生成類(lèi):
Everything is ok at this point, XJC outputs the generated classes like this one regarding TaxDescriptionType:
package org.com.project;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlSchemaType;
import javax.xml.bind.annotation.XmlType;
import javax.xml.bind.annotation.adapters.CollapsedStringAdapter;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
/**
* <p>Java class for TaxDescriptionType complex type.
*
* <p>The following schema fragment specifies the expected content contained within this class.
*
* <pre>
* <complexType name="TaxDescriptionType">
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="ShortName" type="{http://www.w3.org/2001/XMLSchema}string"/>
* </sequence>
* <attribute ref="{http://www.w3.org/XML/1998/namespace}lang"/>
* </restriction>
* </complexContent>
* </complexType>
* </pre>
*
*
*/
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "TaxDescriptionType", propOrder = {
"shortName"
})
public class TaxDescriptionType {
@XmlElement(name = "ShortName", required = true)
protected String shortName;
@XmlAttribute(name = "lang", namespace = "http://www.w3.org/XML/1998/namespace")
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "NCName")
protected String lang;
/**
* Gets the value of the shortName property.
*
* @return
* possible object is
* {@link String }
*
*/
public String getShortName() {
return shortName;
}
/**
* Sets the value of the shortName property.
*
* @param value
* allowed object is
* {@link String }
*
*/
public void setShortName(String value) {
this.shortName = value;
}
/**
* Gets the value of the lang property.
*
* @return
* possible object is
* {@link String }
*
*/
public String getLang() {
return lang;
}
/**
* Sets the value of the lang property.
*
* @param value
* allowed object is
* {@link String }
*
*/
public void setLang(String value) {
this.lang = value;
}
}
然后，通過(guò)上面的 class 我可以使用以下元素:
Then, with the above class I am able to work around with the elements like this:
taxDescriptionType.setLang("en");
taxDescriptionType.setShortName("vatspecial");
/* missing value: 17.5% Non-Recoverable */
但問(wèn)題是我找不到 get 或 set 17.5% Non-Recoverable 文本的方法來(lái)自上述 XML 示例的 MixedContent-ComplexType.
But the problem is that I can't found a way to get or set the 17.5% Non-Recoverable text of the MixedContent-ComplexType from the above XML example.
這是我嘗試過(guò)的，但它不起作用:
- 像這樣使用
mixed="true"屬性:
<xsd:complexType name="TaxDescriptionType" mixed="true">
(我認(rèn)為XJC忽略了最后一個(gè)屬性)
做了一些研究，我發(fā)現(xiàn)了這個(gè):
JAXB XJC 編譯器忽略 XML 上的混合 = true架構(gòu)文檔
但我不確定這是否是解決此問(wèn)題的方法.其中一個(gè)答案說(shuō)這是一個(gè)錯(cuò)誤，而另一個(gè)答案顯示了將 MixedContent 轉(zhuǎn)換為 List
But I am not sure if this is the way to solve this. One of the answers said that this is a bug and in the other one shows a code that transforms the MixedContent into a List<Serializable> and maybe the next situation will be about how to deal with this:
taxDescriptionType.getContent().add(Serializable element);
(而且我真的不知道如何處理 Serializable 元素)
推薦答案
正如你提到的，你需要添加 mixed 屬性來(lái)表明你的類(lèi)型支持混合內(nèi)容.如果沒(méi)有指定，您的 XML 內(nèi)容無(wú)效:
As you mentioned you need to add the mixed attribute to indicate that your type supports mixed content. Without this specified your XML content is invalid:
<xsd:complexType name="TaxDescriptionType" mixed="true">
<xsd:sequence>
<xsd:element name="ShortName" type="xsd:string" />
</xsd:sequence>
<xsd:attribute ref="xml:lang" />
</xsd:complexType>
生成的 TaxDescriptionType 類(lèi)將具有以下屬性.本質(zhì)上，這意味著所有非屬性?xún)?nèi)容都將存儲(chǔ)在 List 中.這是必要的，因?yàn)槟枰环N機(jī)制來(lái)指示文本節(jié)點(diǎn)在元素內(nèi)容中的位置.
The generated TaxDescriptionType class will have the following property. Essentially this means that all of the non-attribute content will be stored in a List. This is necessary because you need a mechanism that indicates where the text nodes are wrt the element content.
@XmlElementRef(name = "ShortName", namespace = "http://www.example.org/schema", type = JAXBElement.class)
@XmlMixed
protected List<Serializable> content;
您將使用 String(表示文本節(jié)點(diǎn))和 JAXBElement(表示元素內(nèi)容)的實(shí)例填充此列表.
You will populate this list with instances of String (representing text nodes) and JAXBElement (representing element content).
交替
混合內(nèi)容通常會(huì)使生活變得比實(shí)際需要的更加復(fù)雜.如果可能的話(huà)，我會(huì)推薦一個(gè)替代的 XML 表示.
Mixed content generally makes life more complicated than it needs to be. If possible I would recommend an alternate XML representation.
<Tax>
<Money currency="USD">0.00</Money>
<Description xml:lang="en" ShortName="vatspecial">
17.5% Non-Recoverable
</Description>
</Tax>
或者
<Tax>
<Money currency="USD">0.00</Money>
<Description xml:lang="en">
<LongName>17.5% Non-Recoverable</LongName>
<ShortName>vatspecial</ShortName>
</Description>
</Tax>
這篇關(guān)于如何處理帶有 MixedContent 數(shù)據(jù)的 JAXB ComplexType?的文章就介紹到這了，希望我們推薦的答案對(duì)大家有所幫助，也希望大家多多支持html5模板網(wǎng)！