如何在使用 jaxb 进行编组时删除额外的转义字符
How to remove extra escape character while doing marshling using jaxb
原始XML amp;由 JAXB 添加,需要忽略:-
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<emp>
<address>7 stret & new </address>
<name>Naveenqq</name>
</emp>
预期没有放大器;(实际值想要):
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<emp>
<address>7 stret & new </address>
<name>Naveenqq</name>
</emp>
我试过下面的代码:
private static void jaxbObjectToXML(Emp employee) throws IOException, SAXException, ParserConfigurationException
{
try
{
JAXBContext jaxbContext = JAXBContext.newInstance(Emp.class);
Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
//jaxbMarshaller.setProperty("jaxb.encoding", "US-ASCII");
jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
//jaxbMarshaller.setProperty(OutputKeys.ENCODING, "ASCII");
//jaxbMarshaller.setProperty(CharacterEscapeHandler.class.getName(), new CustomCharacterEscapeHandler());
// jaxbMarshaller.setProperty(CharacterEscapeHandler.class.getName(), new CharacterEscapeHandler() {
//
// @Override
// public void escape(char[] ch, int start, int length, boolean isAttVal, Writer out) throws IOException {
// out.write( ch, start, length );
//
// }
// });
//
// StringWriter writer = new StringWriter();
File file = new File("employee1.xml");
jaxbMarshaller.marshal(employee, file);
//
// DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
// DocumentBuilder builder = factory.newDocumentBuilder();
// InputSource is = new InputSource( new StringReader( writer.toString() ) );
// Document doc = builder.parse( is );
System.out.println("done::");
}
catch (JAXBException e)
{
e.printStackTrace();
}
}
请帮忙解决同样的问题,所有编码类型我都试过了
您的预期值无效 XML,因此您无法说服任何 XML 感知工具生成它。
为什么要生成无效的 XML?
问题是 XML 中的 &
无效,如果您尝试使用 &
验证 XML,它将失败。 JAXB
非常聪明,所以它会尝试用字符实体替换特殊字符。 HTML 中也发生了类似的事情。你可以refer here.
但是如果您观察 JAXB Unmarshalling
之后的值,它已被 &
而不是 &
取代。所以你不必担心它在XML。我想如果你走你想要的路线那么它会导致很多并发症并且你的 XML 本身将是无效的。
XML:
<emp>
<address>7 stret & new</address>
<name>Naveenqq</name>
</emp>
根目录:
@Data
@XmlRootElement(name = "emp")
@XmlAccessorType(XmlAccessType.FIELD)
public class Root {
private String address;
private String name;
}
主要:
public class Main {
public static void main(String[] args) throws JAXBException, XMLStreamException {
final InputStream inputStream = Main.class.getClassLoader().getResourceAsStream("test.xml");
final XMLStreamReader xmlStreamReader = XMLInputFactory.newInstance().createXMLStreamReader(inputStream);
final Unmarshaller unmarshaller = JAXBContext.newInstance(Root.class).createUnmarshaller();
final Root root = unmarshaller.unmarshal(xmlStreamReader, Root.class).getValue();
System.out.println(root.toString());
Marshaller marshaller = JAXBContext.newInstance(Root.class).createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.setProperty(Marshaller.JAXB_ENCODING, "US-ASCII");
//marshaller.setProperty("com.sun.xml.internal.bind.xmlHeaders", new XmlCharacterHandler());
marshaller.marshal(root, System.out);
}
}
输出:
Root(address=7 stret & new, name=Naveenqq)
<?xml version="1.0" encoding="US-ASCII"?>
<emp>
<address>7 stret & new</address>
<name>Naveenqq</name>
</emp>
正如您在输出 Root(address=7 stret & new, name=Naveenqq)
中看到的那样,它已被 &
替换,因此您可以继续使用相同的内容。
希望解释有所帮助。
原始XML amp;由 JAXB 添加,需要忽略:-
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<emp>
<address>7 stret & new </address>
<name>Naveenqq</name>
</emp>
预期没有放大器;(实际值想要):
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<emp>
<address>7 stret & new </address>
<name>Naveenqq</name>
</emp>
我试过下面的代码:
private static void jaxbObjectToXML(Emp employee) throws IOException, SAXException, ParserConfigurationException
{
try
{
JAXBContext jaxbContext = JAXBContext.newInstance(Emp.class);
Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
//jaxbMarshaller.setProperty("jaxb.encoding", "US-ASCII");
jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
//jaxbMarshaller.setProperty(OutputKeys.ENCODING, "ASCII");
//jaxbMarshaller.setProperty(CharacterEscapeHandler.class.getName(), new CustomCharacterEscapeHandler());
// jaxbMarshaller.setProperty(CharacterEscapeHandler.class.getName(), new CharacterEscapeHandler() {
//
// @Override
// public void escape(char[] ch, int start, int length, boolean isAttVal, Writer out) throws IOException {
// out.write( ch, start, length );
//
// }
// });
//
// StringWriter writer = new StringWriter();
File file = new File("employee1.xml");
jaxbMarshaller.marshal(employee, file);
//
// DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
// DocumentBuilder builder = factory.newDocumentBuilder();
// InputSource is = new InputSource( new StringReader( writer.toString() ) );
// Document doc = builder.parse( is );
System.out.println("done::");
}
catch (JAXBException e)
{
e.printStackTrace();
}
}
请帮忙解决同样的问题,所有编码类型我都试过了
您的预期值无效 XML,因此您无法说服任何 XML 感知工具生成它。
为什么要生成无效的 XML?
问题是 XML 中的 &
无效,如果您尝试使用 &
验证 XML,它将失败。 JAXB
非常聪明,所以它会尝试用字符实体替换特殊字符。 HTML 中也发生了类似的事情。你可以refer here.
但是如果您观察 JAXB Unmarshalling
之后的值,它已被 &
而不是 &
取代。所以你不必担心它在XML。我想如果你走你想要的路线那么它会导致很多并发症并且你的 XML 本身将是无效的。
XML:
<emp>
<address>7 stret & new</address>
<name>Naveenqq</name>
</emp>
根目录:
@Data
@XmlRootElement(name = "emp")
@XmlAccessorType(XmlAccessType.FIELD)
public class Root {
private String address;
private String name;
}
主要:
public class Main {
public static void main(String[] args) throws JAXBException, XMLStreamException {
final InputStream inputStream = Main.class.getClassLoader().getResourceAsStream("test.xml");
final XMLStreamReader xmlStreamReader = XMLInputFactory.newInstance().createXMLStreamReader(inputStream);
final Unmarshaller unmarshaller = JAXBContext.newInstance(Root.class).createUnmarshaller();
final Root root = unmarshaller.unmarshal(xmlStreamReader, Root.class).getValue();
System.out.println(root.toString());
Marshaller marshaller = JAXBContext.newInstance(Root.class).createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.setProperty(Marshaller.JAXB_ENCODING, "US-ASCII");
//marshaller.setProperty("com.sun.xml.internal.bind.xmlHeaders", new XmlCharacterHandler());
marshaller.marshal(root, System.out);
}
}
输出:
Root(address=7 stret & new, name=Naveenqq)
<?xml version="1.0" encoding="US-ASCII"?>
<emp>
<address>7 stret & new</address>
<name>Naveenqq</name>
</emp>
正如您在输出 Root(address=7 stret & new, name=Naveenqq)
中看到的那样,它已被 &
替换,因此您可以继续使用相同的内容。
希望解释有所帮助。