java 从 jaxb 生成的 xml 中删除 standalone="yes"
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Remove standalone="yes" from jaxb generated xml
提问by vg123
public final String getMessage() {
JAXBContext jaxbContext;
StringWriter sw = new StringWriter();
try {
jaxbContext = JAXBContext.newInstance(Login.class);
Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
jaxbMarshaller.setProperty("jaxb.encoding", "ISO-8859-1");
jaxbMarshaller.marshal(this, sw);
} catch (JAXBException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return sw.toString();
}
This is the code what I'm using..and I'm getting output as following.
这是我正在使用的代码......我得到的输出如下。
<?xml version="1.0" encoding="ISO-8859-1" standalone="yes"?>
Here I want to remove standalone="yes" and want output as
在这里，我想删除 standalone="yes" 并希望输出为
<?xml version="1.0" encoding="ISO-8859-1"?>
I checked link JAXB - Remove 'standalone="yes"' from generated XMLbut answers here are removing complete
我检查了链接 JAXB - 从生成的 XML 中删除 'standalone="yes"'但这里的答案正在删除完整
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
part
部分
I don't want that...
我不想那样...
Please help me..
请帮我..
采纳答案by bdoughan
There are a couple of issues that need to be addressed in your question:
在您的问题中需要解决几个问题：
ISSUE #1 - Encoding
问题 #1 - 编码
The "jaxb.encoding"property when sets directly affects the encoding when the output is an OutputStream. If you are using an output that (such as Writer) that is reponsible for handling its own encoding then you need to make sure that you handle that as part of the Writer.
的"jaxb.encoding"属性时套直接影响到编码时的输出是一个OutputStream。如果您使用的输出（例如Writer）负责处理其自己的编码，那么您需要确保将其作为Writer.
For More Information
想要查询更多的信息
ISSUE #2 - standalone="yes"
问题#2 - standalone="yes"
You can create a StAX (JSR-173) XMLStreamWriterto wrap your StringWriterfor your XML output and marshal to that.
您可以创建一个 StAX (JSR-173)XMLStreamWriter来包装您StringWriter的 XML 输出并对其进行编组。
import java.io.*;
import javax.xml.bind.*;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.stream.*;
@XmlRootElement
public class Login {
private JAXBContext jaxbContext;
private XMLOutputFactory xmlOutputFactory;
public Login() {
try {
jaxbContext = JAXBContext.newInstance(Login.class);
xmlOutputFactory = XMLOutputFactory.newFactory();
} catch(Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
Login demo = new Login();
System.out.println(demo.getMessage());
}
public final String getMessage() {
try {
Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
jaxbMarshaller.setProperty("jaxb.encoding", "ISO-8859-1");
jaxbMarshaller.setProperty(Marshaller.JAXB_FRAGMENT, true);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
XMLStreamWriter xmlStreamWriter = xmlOutputFactory.createXMLStreamWriter(baos, (String) jaxbMarshaller.getProperty(Marshaller.JAXB_ENCODING));
xmlStreamWriter.writeStartDocument((String) jaxbMarshaller.getProperty(Marshaller.JAXB_ENCODING), "1.0");
jaxbMarshaller.marshal(this, xmlStreamWriter);
xmlStreamWriter.writeEndDocument();
xmlStreamWriter.close();
return new String(baos.toByteArray());
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
}
Output
输出
<?xml version="1.0" encoding="ISO-8859-1"?><login></login>
ALTERNATE APPROACH
替代方法
Note:I'm the EclipseLink JAXB (MOXy)lead and a member of the JAXB (JSR-222)expert group.
注意：我是EclipseLink JAXB (MOXy) 的负责人，也是JAXB (JSR-222)专家组的成员。
There are other JAXB (JSR-222) providers such as MOXy that do not output standalone="yes"as part of the XML Output that you can use.
还有其他 JAXB (JSR-222) 提供程序，例如 MOXy，它们不会standalone="yes"作为您可以使用的 XML 输出的一部分进行输出。
