Java Jaxb在解组时忽略名称空间
我使用Jaxb2和Spring。我正在尝试解组我的两个客户发送的一些XML 到目前为止,我只需要处理一个客户发送的xml如下:Java Jaxb在解组时忽略名称空间,java,spring,jaxb,Java,Spring,Jaxb,我使用Jaxb2和Spring。我正在尝试解组我的两个客户发送的一些XML 到目前为止,我只需要处理一个客户发送的xml如下: <foo xmlns="com.acme"> <bar>[...]</bar> <foo> @XmlType(name = "", propOrder = {"bar"}) @XmlRootElement(name = "Foo") public class Foo { @XmlElement(name = "
<foo xmlns="com.acme">
<bar>[...]</bar>
<foo>
@XmlType(name = "", propOrder = {"bar"})
@XmlRootElement(name = "Foo")
public class Foo {
@XmlElement(name = "Bar")
private String bar;
[...]
}
我发现之前的开发人员在解组器中硬编码了名称空间以使其工作
现在,第二个客户发送相同的XML,但更改了名称空间
<foo xmlns="com.xyz">
<bar>[...]</bar>
<foo>
似乎唯一可用的选项是Jaxb2Marshaller的Javadoc中列出的选项:
/**
* Set the JAXB {@code Marshaller} properties. These properties will be set on the
* underlying JAXB {@code Marshaller}, and allow for features such as indentation.
* @param properties the properties
* @see javax.xml.bind.Marshaller#setProperty(String, Object)
* @see javax.xml.bind.Marshaller#JAXB_ENCODING
* @see javax.xml.bind.Marshaller#JAXB_FORMATTED_OUTPUT
* @see javax.xml.bind.Marshaller#JAXB_NO_NAMESPACE_SCHEMA_LOCATION
* @see javax.xml.bind.Marshaller#JAXB_SCHEMA_LOCATION
*/
public void setMarshallerProperties(Map<String, ?> properties) {
this.marshallerProperties = properties;
}
3)SAXParser的不同形式:
try {
jc = JAXBContext.newInstance("com.mycompany.mypkg");
Unmarshaller um = jc.createUnmarshaller();
final SAXParserFactory sax = SAXParserFactory.newInstance();
sax.setNamespaceAware(false);
final XMLReader reader = sax.newSAXParser().getXMLReader();
final Source er = new SAXSource(reader, new InputSource(new FileReader(xmlFile.toFile())));
return (Foo)um.unmarshal(er);
}catch(...) {[...]}
这个有效但是,我还是希望能够自动连接解组器,而不需要每次都使用这种难看的配置。名称感知是文档阅读器/生成器/解析器的功能,而不是封送器的功能。来自不同名称空间的XML元素表示不同的实体==对象,因此封送处理程序不能忽略它们 您正确地关闭了SAX读取器中的名称空间,正如您所说,它工作正常。我不理解你的问题,你的封送员仍然可以被注入,区别在于获取输入数据 使用document builder的相同技巧也应该有效(稍后我将对其进行测试),我怀疑您仍然使用带有“硬编码”命名空间的封送器,但您的文档没有命名空间 在我的项目中,我使用XSLT来解决类似的问题。设置名称空间感知绝对是更容易的解决方案。但是,使用XSLT,我可以选择只删除一些名称空间,而且我的输入xml并不总是相同的(忽略名称空间),有时我不得不重命名一些元素,因此XSLT给了我额外的灵活性 要删除名称空间,可以使用以下xslt模板:
然后在Java中,在解组之前,我转换输入数据:
Transformer transformer = TransformerFactory.newInstance().newTransformer(stylesource);
Source source = new DOMSource(xml);
DOMResult result = new DOMResult();
transformer.transform(source, result);
谢谢大家,这里分享了我的解决方案,它适用于我的代码,我尝试使它成为通用的每个名称空间包含“:“如果任何标记有,我编写代码”:“它将从xml中删除,这用于在使用jaxb解组期间跳过名称空间
public class NamespaceFilter {
private NamespaceFilter() {
}
private static final String COLON = ":";
public static XMLReader nameSpaceFilter() throws SAXException {
XMLReader xr = new XMLFilterImpl(XMLReaderFactory.createXMLReader()) {
private boolean skipNamespace;
@Override
public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException {
if (qName.indexOf(COLON) > -1) {
skipNamespace = true;
} else {
skipNamespace = false;
super.startElement("", localName, qName, atts);
}
}
@Override
public void endElement(String uri, String localName, String qName) throws SAXException {
if (qName.indexOf(COLON) > -1) {
skipNamespace = true;
} else {
skipNamespace = false;
super.endElement("", localName, qName);
}
}
@Override
public void characters(char[] ch, int start, int length) throws SAXException {
if (!skipNamespace) {
super.characters(ch, start, length);
}
}
};
return xr;
}
}
拆封
XMLReader xr = NamespaceFilter.nameSpaceFilter();
Source src = new SAXSource(xr, new InputSource("C:\\Users\\binal\\Desktop\\response.xml"));
StringWriter sw = new StringWriter();
Result res = new StreamResult(sw);
TransformerFactory.newInstance().newTransformer().transform(src, res);
JAXBContext jc = JAXBContext.newInstance(Tab.class);
Unmarshaller u = jc.createUnmarshaller();
String done = sw.getBuffer().toString();
StringReader reader = new StringReader(done);
Tab tab = (Tab) u.unmarshal(reader);
System.out.println(tab);
`
public class NamespaceFilter {
private NamespaceFilter() {
}
private static final String COLON = ":";
public static XMLReader nameSpaceFilter() throws SAXException {
XMLReader xr = new XMLFilterImpl(XMLReaderFactory.createXMLReader()) {
private boolean skipNamespace;
@Override
public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException {
if (qName.indexOf(COLON) > -1) {
skipNamespace = true;
} else {
skipNamespace = false;
super.startElement("", localName, qName, atts);
}
}
@Override
public void endElement(String uri, String localName, String qName) throws SAXException {
if (qName.indexOf(COLON) > -1) {
skipNamespace = true;
} else {
skipNamespace = false;
super.endElement("", localName, qName);
}
}
@Override
public void characters(char[] ch, int start, int length) throws SAXException {
if (!skipNamespace) {
super.characters(ch, start, length);
}
}
};
return xr;
}
XMLReader xr = NamespaceFilter.nameSpaceFilter();
Source src = new SAXSource(xr, new InputSource("C:\\Users\\binal\\Desktop\\response.xml"));
StringWriter sw = new StringWriter();
Result res = new StreamResult(sw);
TransformerFactory.newInstance().newTransformer().transform(src, res);
JAXBContext jc = JAXBContext.newInstance(Tab.class);
Unmarshaller u = jc.createUnmarshaller();
String done = sw.getBuffer().toString();
StringReader reader = new StringReader(done);
Tab tab = (Tab) u.unmarshal(reader);
System.out.println(tab);