JAXB 编组 使用 CDATA 解组 [英] JAXB Marshalling Unmarshalling with CDATA
问题描述
我正在尝试使用 JAXB 进行封送处理.
I am trying to do marshaling with JAXB.
我的输出是这样的:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<root>
<name><![CDATA[<h1>kshitij</h1>]]></name>
<surname><h1>solanki</h1></surname>
<id><h1>1</h1></id>
</root>
...但我需要这样的输出:
...but I need output like this:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<root>
<name><![CDATA[<h1>kshitij</h1>]]></name>
<surname><![CDATA[<h1>solanki</h1>]]></surname>
<id><![CDATA[0]]></id>
</root>
我正在使用以下代码来执行此操作.
I am using following code to do this.
如果我取消注释代码,我会得到 PropertyBindingException
.没有它我可以编译,但我没有得到所需的确切输出.
If I uncomment code I get PropertyBindingException
. Without it I can compile but I am not getting the exact required output.
package com.ksh.templates;
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import com.sun.xml.bind.marshaller.CharacterEscapeHandler;
public class MainCDATA {
public static void main(String args[])
{
try
{
String name = "<h1>kshitij</h1>";
String surname = "<h1>solanki</h1>";
String id = "<h1>1</h1>";
TestingCDATA cdata = new TestingCDATA();
cdata.setId(id);
cdata.setName(name);
cdata.setSurname(surname);
JAXBContext jaxbContext = JAXBContext.newInstance(TestingCDATA.class);
Marshaller marshaller = jaxbContext.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.setProperty(CharacterEscapeHandler.class.getName(), new CharacterEscapeHandler() {
public void escape(char[] ac, int i, int j, boolean flag,
Writer writer) throws IOException {
writer.write( ac, i, j ); }
});
StringWriter stringWriter = new StringWriter();
marshaller.marshal(cdata, stringWriter);
System.out.println(stringWriter.toString());
} catch (Exception e) {
System.out.println(e);
}
}
}
我的 bean 看起来像这样:
My bean looks like this:
package com.ksh.templates;
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.adapters.XmlJavaTypeAdapter;
import com.sun.xml.txw2.annotation.XmlCDATA;
@XmlRootElement(name = "root")
@XmlAccessorType(XmlAccessType.FIELD)
public class TestingCDATA {
@XmlElement
@XmlJavaTypeAdapter(value = AdaptorCDATA.class)
private String name;
@XmlElement
@XmlJavaTypeAdapter(value = AdaptorCDATA.class)
private String surname;
@XmlCDATA
public String getName() {
return name;
}
@XmlCDATA
public void setName(String name) {
this.name = name;
}
@XmlCDATA
public String getSurname() {
return surname;
}
@XmlCDATA
public void setSurname(String surname) {
this.surname = surname;
}
}
适配器类
public class AdaptorCDATA extends XmlAdapter<String, String> {
@Override
public String marshal(String arg0) throws Exception {
return "<![CDATA[" + arg0 + "]]>";
}
@Override
public String unmarshal(String arg0) throws Exception {
return arg0;
}
}
推荐答案
您可以执行以下操作:
AdapterCDATA
package forum14193944;
import javax.xml.bind.annotation.adapters.XmlAdapter;
public class AdapterCDATA extends XmlAdapter<String, String> {
@Override
public String marshal(String arg0) throws Exception {
return "<![CDATA[" + arg0 + "]]>";
}
@Override
public String unmarshal(String arg0) throws Exception {
return arg0;
}
}
根目录
@XmlJavaTypeAdapter
注释用于指定应该使用 XmlAdapter
.
The @XmlJavaTypeAdapter
annotation is used to specify that the XmlAdapter
should be used.
package forum14193944;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class Root {
@XmlJavaTypeAdapter(AdapterCDATA.class)
private String name;
@XmlJavaTypeAdapter(AdapterCDATA.class)
private String surname;
@XmlJavaTypeAdapter(AdapterCDATA.class)
private String id;
}
演示
我必须将 System.out
包装在 OutputStreamWriter
中以获得所需的效果.另请注意,设置 CharacterEscapeHandler
意味着它负责该 Marshaller
的所有转义处理.
I had to wrap System.out
in an OutputStreamWriter
to get the desired effect. Also note that setting a CharacterEscapeHandler
means that it is responsible for all escape handling for that Marshaller
.
package forum14193944;
import java.io.*;
import javax.xml.bind.*;
import com.sun.xml.bind.marshaller.*;
public class Demo {
public static void main(String[] args) throws Exception {
JAXBContext jc = JAXBContext.newInstance(Root.class);
Unmarshaller unmarshaller = jc.createUnmarshaller();
File xml = new File("src/forum14193944/input.xml");
Root root = (Root) unmarshaller.unmarshal(xml);
Marshaller marshaller = jc.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.setProperty(CharacterEscapeHandler.class.getName(),
new CharacterEscapeHandler() {
@Override
public void escape(char[] ac, int i, int j, boolean flag,
Writer writer) throws IOException {
writer.write(ac, i, j);
}
});
marshaller.marshal(root, new OutputStreamWriter(System.out));
}
}
input.xml/输出
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<root>
<name><![CDATA[<h1>kshitij</h1>]]></name>
<surname><![CDATA[<h1>solanki</h1>]]></surname>
<id><![CDATA[0]]></id>
</root>
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