java - 无法处理 SOAP 响应

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>

我想在 Java 中获取 BinaryState 值 (0) 或 (1)。 我很难弄清楚它在 SOAPMessage 响应中的位置。帮助会很棒。或者即使我可以将 XML 响应放入字符串中并自己解析它。

Answer 1

将 SOAPMessage 转换为字符串，您可以在其中

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，如果您想要的只是您已经知道名称的元素的特定值(并且至少有一个存在)，您可以通过以下方式获得它:

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