编辑：

Question

我有以下代码：

SOAPConnectionFactory sfc = SOAPConnectionFactory.newInstance();
          SOAPConnection connection = sfc.createConnection();

          MessageFactory mf = MessageFactory.newInstance();
          SOAPMessage sm = mf.createMessage();
          SOAPHeader sh = sm.getSOAPHeader();
          SOAPBody sb = sm.getSOAPBody();
          sh.detachNode();
          MimeHeaders mimeHeader = sm.getMimeHeaders();

          //change header's attribute
          mimeHeader.setHeader("SOAPAction", "\"urn:Belkin:service:basicevent:1#GetBinaryState\"");
          //sh.addAttribute(SOAPFactory.newInstance().createName("SOAPAction", "", "urn:Belkin:service:basicevent:1#SetBinaryState"),"");
          QName bodyName = new QName("urn:Belkin:service:basicevent:1", "GetBinaryState", "u");

          //sm.add            

          SOAPBodyElement bodyElement = sb.addBodyElement(bodyName);
          QName qn = new QName("BinaryState");

          System.out.println("\n Soap Request:\n");
          sm.writeTo(System.out);
          System.out.println();

          URL endpoint = new URL("http://" + ipAddress + ":49153/upnp/control/basicevent1");
          SOAPMessage response = connection.call(sm, endpoint);

          connection.close();
          System.out.println(response.getContentDescription());
        } catch (Exception ex) {
          ex.printStackTrace();
        }

给我这个回复（在wireshark中）

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"                    
    s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
    <s:Body>
        <u:GetBinaryStateResponse xmlns:u="urn:Belkin:service:basicevent:1">
            <BinaryState>0</BinaryState>
        </u:GetBinaryStateResponse>
    </s:Body>
</s:Envelope>

我希望在Java中获得BinaryState值（0）或（1）。我很难找出SOAPMessage响应中的位置。帮助会很棒。或者即使我可以将XML响应放在一个字符串中并自己解析它。

Answer 1

将SOAPMessage转换为String

SOAPMessage response = connection.call(sm, endpoint);

这样做：

SOAPMessage response = connection.call(sm, endpoint);
ByteArrayOutputStream os = new ByteArrayOutputStream();
response.writeTo(os);
String responseXml = new String(os.toByteArray());
// work with responseXml here...

编辑：

作为替代方案，如果您想要的只是一个元素的特定值，您已经知道了该名称（并且至少存在一个名称），您可以通过以下方式得到它：

String responseBinaryState = response.getSOAPBody()
                                     .getElementsByTagName("BinaryState")
                                     .item(0).getTextContent();
System.out.println("BinaryState: "+responseBinaryState);

Answer 2

response.getSOAPBody()将为您提供一个身体的Dom节点，与其子节点相同，与导航正常的Dom树没有任何不同。

所以你可以浏览树（未经测试，做调试！）：

Node body = response.getSOAPBody();
Node binStateResponse = body.getFirstChild();
Node binaryState = binStateResponse.getFirstChild();
Node binaryStateText = binaryState.getFirstChild();
String result = binaryStateText.getNodeValue();

或者使用XPath表达式更可靠地找到答案，与身体的确切内容无关。

XPathFactory factory = XPathFactory.newInstance();
XPath xpath = factory.newXPath();
Node body = response.getSOAPBody();
String result = xpath.evaluate(
    "//BinaryState/text()", 
    body);

无法处理SOAP响应

2 个答案:

编辑：