我正在尝试解析以下 SOAP 响应，因为它不是有效响应我正在尝试使用以下过滤器删除其命名空间，但它遇到了错误。
响应
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
<SearchFlightsResponse xmlns="ElsyArres.API">
<SoapMessage>
<Username>TEST</Username>
<Password>TESTs</Password>
<LanguageCode>EN</LanguageCode>
<ErrorMessage />
<ErrorCode>0</ErrorCode>
<AppVersion>8.0.3</AppVersion>
<Request>
<Departure>FDH</Departure>
<Destination>HAM</Destination>
<DepartureDate>2014-08-08</DepartureDate>
<ReturnDate />
<NumADT>1</NumADT>
<NumINF>0</NumINF>
<NumCHD>0</NumCHD>
<CurrencyCode>EUR</CurrencyCode>
<CarrierList />
<FareClasses />
<Providers />
<WaitForResult>true</WaitForResult>
<NearbyDepartures>true</NearbyDepartures>
<NearbyDestinations>true</NearbyDestinations>
<RROnly>false</RROnly>
<MetaSearch>true</MetaSearch>
</Request>
<Response>
<SearchFlightId>140514114543-02-43064-52</SearchFlightId>
<Roundtrip>false</Roundtrip>
<CurrencyCode>EUR</CurrencyCode>
<Flights>
<Flight>
<Outbound>
<CarName>Inter Sky</CarName>
<CarCode>3L</CarCode>
<DepName>Friedrichshafen</DepName>
<DepCode>FDH</DepCode>
<DestName>Hamburg</DestName>
<DestCode>HAM</DestCode>
<Duration>01:45</Duration>
<FlightNo>3L370</FlightNo>
<DepDateTime>2014-08-08T06:10:00</DepDateTime>
<ArrDateTime>2014-08-08T07:55:00</ArrDateTime>
<Legs>
<Leg>
<Sequence>0</Sequence>
<FlightNo>3L370</FlightNo>
<DepCode>FDH</DepCode>
<DepName>Friedrichshafen</DepName>
<DestCode>HAM</DestCode>
<DestName>Hamburg</DestName>
<DepTime>06:10</DepTime>
<ArrTime>07:55</ArrTime>
<CarCode>3L</CarCode>
<CarName>Inter Sky</CarName>
<FareClass>Economy</FareClass>
<ArrDateTime>2014-08-08T07:55:00</ArrDateTime>
<DepDateTime>2014-08-08T06:10:00</DepDateTime>
</Leg>
</Legs>
<Taxes>0</Taxes>
<FareADT>6500</FareADT>
<FareCHD>0</FareCHD>
<FareINF>0</FareINF>
<MiscFees>6400</MiscFees>
<Idx>307963</Idx>
<FareClass>Economy</FareClass>
<FareType>Web</FareType>
<FareId>3L0</FareId>
</Outbound>
<BagFee>0</BagFee>
<CcFee>600</CcFee>
<HandlingFee>500</HandlingFee>
<TotalFare>12900</TotalFare>
<FlightId>140514114543-02-21212-2</FlightId>
<Link2Book>http://sample.com</Link2Book>
<Provider>ElsyArres</Provider>
</Flight>
<Flight>
<Outbound>
<CarName>Inter Sky</CarName>
<CarCode>3L</CarCode>
<DepName>Friedrichshafen</DepName>
<DepCode>FDH</DepCode>
<DestName>Hamburg</DestName>
<DestCode>HAM</DestCode>
<Duration>01:45</Duration>
<FlightNo>3L376</FlightNo>
<DepDateTime>2014-08-08T18:00:00</DepDateTime>
<ArrDateTime>2014-08-08T19:45:00</ArrDateTime>
<Legs>
<Leg>
<Sequence>0</Sequence>
<FlightNo>3L376</FlightNo>
<DepCode>FDH</DepCode>
<DepName>Friedrichshafen</DepName>
<DestCode>HAM</DestCode>
<DestName>Hamburg</DestName>
<DepTime>18:00</DepTime>
<ArrTime>19:45</ArrTime>
<CarCode>3L</CarCode>
<CarName>Inter Sky</CarName>
<FareClass>Economy</FareClass>
<ArrDateTime>2014-08-08T19:45:00</ArrDateTime>
<DepDateTime>2014-08-08T18:00:00</DepDateTime>
</Leg>
</Legs>
<Taxes>0</Taxes>
<FareADT>10500</FareADT>
<FareCHD>0</FareCHD>
<FareINF>0</FareINF>
<MiscFees>6400</MiscFees>
<Idx>307964</Idx>
<FareClass>Economy</FareClass>
<FareType>Web</FareType>
<FareId>3L0</FareId>
</Outbound>
<BagFee>0</BagFee>
<CcFee>600</CcFee>
<HandlingFee>500</HandlingFee>
<TotalFare>16900</TotalFare>
<FlightId>140514114543-02-21212-3</FlightId>
<Link2Book>http://sample.com</Link2Book>
<Provider>ElsyArres</Provider>
</Flight>
</Flights>
</Response>
</SoapMessage>
</SearchFlightsResponse>
</soap:Body>
</soap:Envelope>
代码
message.writeTo(System.out); //show message details
URL endpoint = new URL("http://testv80.elsyarres.net/service.asmx");
SOAPMessage response = connection.call(message, endpoint);
connection.close();
SOAPMessage sm = response;
System.err.println("sm is:" + sm);
System.out.println("Response:");
ByteArrayOutputStream out = new ByteArrayOutputStream();
sm.writeTo(out);
System.out.println(out.toString()); //ValidSoap message
NamespaceFilter outFilter = new NamespaceFilter(null, false);
Reader in = new StringReader(out.toString()); //reading character stream
InputSource is = new InputSource(in);
SAXSource source = new SAXSource(outFilter,is);
第 202 行 >>>
this.results = (SearchFlightsResponse) JAXB.unmarshal(source, SearchFlightsResponse.class);
System.err.println(">" + results.getSoapMessage().getUsername());
JAXBContext context = JAXBContext.newInstance(SearchFlightsResponse.class);
Marshaller m = context.createMarshaller();
m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
m.marshal(results, System.out);
这是我找到的过滤器实现 here
命名空间过滤器
public class NamespaceFilter extends XMLFilterImpl {
private String usedNamespaceUri;
private boolean addNamespace;
//State variable
private boolean addedNamespace = false;
public NamespaceFilter(String namespaceUri,
boolean addNamespace) {
super();
if (addNamespace)
this.usedNamespaceUri = namespaceUri;
else
this.usedNamespaceUri = "";
this.addNamespace = addNamespace;
}
@Override
public void startDocument() throws SAXException {
super.startDocument();
if (addNamespace) {
startControlledPrefixMapping();
}
}
@Override
public void startElement(String arg0, String arg1, String arg2,
Attributes arg3) throws SAXException {
super.startElement(this.usedNamespaceUri, arg1, arg2, arg3);
}
@Override
public void endElement(String arg0, String arg1, String arg2)
throws SAXException {
super.endElement(this.usedNamespaceUri, arg1, arg2);
}
@Override
public void startPrefixMapping(String prefix, String url)
throws SAXException {
if (addNamespace) {
this.startControlledPrefixMapping();
} else {
//Remove the namespace, i.e. don´t call startPrefixMapping for parent!
}
}
private void startControlledPrefixMapping() throws SAXException {
if (this.addNamespace && !this.addedNamespace) {
//We should add namespace since it is set and has not yet been done.
super.startPrefixMapping("", this.usedNamespaceUri);
//Make sure we dont do it twice
this.addedNamespace = true;
}
}
}
错误
java.lang.NullPointerException: No parent for filter
at org.xml.sax.helpers.XMLFilterImpl.setupParse(XMLFilterImpl.java:714)
at org.xml.sax.helpers.XMLFilterImpl.parse(XMLFilterImpl.java:356)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:203)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:181)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:232)
at javax.xml.bind.JAXB.unmarshal(JAXB.java:259)
at com.test.retrieveFlights(test.java:202)
at com.test.App.main(App.java:17)
最佳答案
JAXB (JSR-222) 实现不应该对 SOAP 响应有任何问题。这个问题是对你在相关问题上得到的答案的回应，但那个答案不正确。
SOAPMessage 实例是 SOAP 消息的 DOM 表示。您只需向下导航到已映射到的子元素并对其进行解码。以下是我们针对您的一个相关问题得出的结论:
关于java - 无法使用 SAXFilter 删除 SOAP 响应的命名空间，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/24228672/