Java 通过套接字发送SOAPMessage

我尝试将soap消息从我编写的客户端发送到我也通过套接字编写的服务器

我将尝试只粘贴应该这样做的重要代码（服务器和客户端之间的通信正常-我可以发送字符串对象）：

客户 服务器 当我尝试调用最后一行时，服务器中有很多运行时错误

ERROR:  'Content is not allowed in prolog.'
Nov 03, 2014 9:25:43 PM com.sun.xml.internal.messaging.saaj.soap.EnvelopeFactory createEnvelope
SEVERE: SAAJ0511: Unable to create envelope from given source
Exception in thread "main" com.sun.xml.internal.messaging.saaj.SOAPExceptionImpl: Unable to create envelope from given source:
        at com.sun.xml.internal.messaging.saaj.soap.EnvelopeFactory.createEnvelope(Unknown Source)
        at com.sun.xml.internal.messaging.saaj.soap.ver1_1.SOAPPart1_1Impl.createEnvelopeFromSource(Unknown Source)
        at com.sun.xml.internal.messaging.saaj.soap.SOAPPartImpl.getEnvelope(Unknown Source)
        at com.sun.xml.internal.messaging.saaj.soap.MessageImpl.getSOAPHeader(Unknown Source)
        at EchoServer.main(EchoServer.java:64)
Caused by: javax.xml.transform.TransformerException: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog.
        at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(Unknown Source)
        at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(Unknown Source)
        at com.sun.xml.internal.messaging.saaj.util.transform.EfficientStreamingTransformer.transform(Unknown Source)
        ... 5 more

---

SOAPMessage

没有定义

toString（）

，因此它继承自

对象

，生成了一个与SOAP完全不同的java对象id。要从

SOAPMessage

创建XML，请替换

out.println（SOAPMessage）使用此代码：

soapMsg.writeTo(out);

可能重复的
ERROR:  'Content is not allowed in prolog.'
Nov 03, 2014 9:25:43 PM com.sun.xml.internal.messaging.saaj.soap.EnvelopeFactory createEnvelope
SEVERE: SAAJ0511: Unable to create envelope from given source
Exception in thread "main" com.sun.xml.internal.messaging.saaj.SOAPExceptionImpl: Unable to create envelope from given source:
        at com.sun.xml.internal.messaging.saaj.soap.EnvelopeFactory.createEnvelope(Unknown Source)
        at com.sun.xml.internal.messaging.saaj.soap.ver1_1.SOAPPart1_1Impl.createEnvelopeFromSource(Unknown Source)
        at com.sun.xml.internal.messaging.saaj.soap.SOAPPartImpl.getEnvelope(Unknown Source)
        at com.sun.xml.internal.messaging.saaj.soap.MessageImpl.getSOAPHeader(Unknown Source)
        at EchoServer.main(EchoServer.java:64)
Caused by: javax.xml.transform.TransformerException: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog.
        at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(Unknown Source)
        at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(Unknown Source)
        at com.sun.xml.internal.messaging.saaj.util.transform.EfficientStreamingTransformer.transform(Unknown Source)
        ... 5 more

soapMsg.writeTo(out);