java - 使用JAXB从XML创建POJO

我正在尝试使用Pojo to XML库转换JAXB。

我需要最终结果看起来像这样：

<soap:Envelope
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xmlns:xsd="http://www.w3.org/2001/XMLSchema"
      xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>

 <!--other stuff-->

</soap:Body>
</soap:Envelope>

我尝试了几种不同的方法，但是到目前为止，我还没有成功，这是我的最新尝试。

@XmlRootElement(name = "soap:Envelope")
public class Envelope {

  private SoapBody soapBody;

  public String toString() {
      return "ClassPojo [SoapBody = " + soapBody + "]";
  }

  public SoapBody getSoapBody() {
      return soapBody;
  }

  @XmlElement(name = "soap:Body")
  public void setSoapBody(SoapBody soapBody) {
      this.soapBody = soapBody;
  }
}

这将转换为以下结果（但缺少XMLNS行）：

<soap:Envelope>
<soap:Body>
<!--Other stuff-->
</soap:Body>
</soap:Envelope>

我尝试将名称空间标签添加到声明中：

@XmlRootElement(name = "soap:Envelope", namespace = "soap")

但这只是使行转换为此<ns2:soap:Envelope xmlns:ns2="soap">

编辑：

    OutputStream os = connection.getOutputStream();
    JAXBContext jaxbContext =
        JAXBContext.newInstance(MyOtherStuffObject.class);
    Marshaller marshaller = jaxbContext.createMarshaller();
    marshaller.marshal(myObject, os);
    os.flush();

最佳答案

我尝试将名称空间标签添加到声明中：
  
  @XmlRootElement（name =“ soap：Envelope”，名称空间=“ soap”）
  
  但它只是使线转换为此


您一步一步摆脱了需要...

soap名称空间是http://schemas.xmlsoap.org/soap/envelope/而不是soap，那么……如果那样的话会怎样？

@XmlRootElement(name = "soap:Envelope", namespace = "http://schemas.xmlsoap.org/soap/envelope/")

顺便说一句。但是您真的需要手动创建SOAP Envelope吗？实际上，标准软件包javax.xml.soap具有与SOAP一起使用的所有功能，您可以将“其他内容”包装到SOAP Envelope中，而不关心自己构建它吗？

更新：
我强烈建议在使用诸如Apache CXF之类的SOAP Web服务时使用常规框架，而不是在较低级别上处理SOAP。

但这可以通过标准JDK类来完成。
示例代码：

package com.foo.tests;

import java.io.ByteArrayOutputStream;
import java.util.Calendar;
import java.util.UUID;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.soap.MessageFactory;
import javax.xml.soap.SOAPConstants;
import javax.xml.soap.SOAPMessage;

import org.w3c.dom.Document;

public class TestSOAPMessage {

    static MessageFactory factory;
    static DocumentBuilderFactory documentFactory;
    static JAXBContext jaxbCtx;
    static com.foo.tests.pojo.ObjectFactory myStuffFactory = new com.foo.tests.pojo.ObjectFactory();
    static {
        try {
            factory = MessageFactory.newInstance(SOAPConstants.SOAP_1_1_PROTOCOL);
            documentFactory = DocumentBuilderFactory.newInstance();
            jaxbCtx = JAXBContext.newInstance(com.foo.tests.pojo.MyStuffPojo.class);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String... args) {
        try {
            // prepare test MyStuff JAXB POJO
            com.foo.tests.pojo.MyStuffPojo myStuff = myStuffFactory.createMyStuffPojo();
            // populate myStuff Pojo
            myStuff.setMyPropertyA("property A");
            myStuff.setTimestamp(Calendar.getInstance());
            myStuff.setMessageId(UUID.randomUUID().toString());
            //---
            // marshal JAXB Pojo to DOM Document
            Document myStuffDoc = documentFactory.newDocumentBuilder().newDocument();

            //*** myStuff has @XmlRootElement annotation
             jaxbCtx.createMarshaller().marshal(myStuff, myStuffDoc);

            //*** myStuff does not have @XmlRootElement annotation wrap it and use JAXBElement instead
//          JAXBElement<com.foo.tests.pojo.MyStuffPojo myStuff> jaxbWrapper = myStuffFactory.createMyStuffPojo(myStuff);
//          jaxbCtx.createMarshaller().marshal(jaxbWrapper, myStuffDoc);

            //marshal JAXB Pojo to DOM Document
            Document myStuffDoc = documentFactory.newDocumentBuilder().newDocument();
            jaxbCtx.createMarshaller().marshal(jaxbWrapper, myStuffDoc);
            //Create SOAPMessage
            SOAPMessage myMessage = factory.createMessage();
            //Optional if we'd like to set those properties...
            myMessage.setProperty(SOAPMessage.WRITE_XML_DECLARATION, "true");
            myMessage.setProperty(SOAPMessage.CHARACTER_SET_ENCODING, "utf-8");
            // set myStuff into SOAPBody
            myMessage.getSOAPBody().addDocument(myStuffDoc);
            //All done. Save changes
            myMessage.saveChanges();

            // Just for test: print message
            ByteArrayOutputStream finalBos = new ByteArrayOutputStream();
            myMessage.writeTo(finalBos);
            System.out.println("my Message: \r\n" + new String(finalBos.toByteArray()));

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

关于java - 使用JAXB从XML创建POJO，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/46430175/