Question

我想通过TCP传输向代理服务发送请求，当使用此代码发送我的soap xml

Socket clientSocket = new Socket("host", port);

DataOutputStream outToServer = new DataOutputStream(clientSocket.getOutputStream());

outToServer.writeBytes("soap xml instance");

clientSocket.close();

它工作正常，我的业务仍在继续。

但是当我发送两个xml而没有像这样关闭套接字时：

Socket clientSocket = new Socket("host", port);

DataOutputStream outToServer = new DataOutputStream(clientSocket.getOutputStream());

outToServer.writeBytes("soap xml instance");

outToServer.writeBytes("another soap instance");

clientSocket.close();

它总是抛出这个异常：

TID：[0] [ESB] [2013-06-28 13：36：10,838]错误 {org.apache.axis2.transport.tcp.TCPWorker} - 处理时出错 TCP请求通过Axis2引擎 {} org.apache.axis2.transport.tcp.TCPWorker org.apache.axiom.om.OMException： com.ctc.wstx.exc.WstxParsingException：非法处理指令 target（“xml”）;规范保留xml（不区分大小写）。在 [row，col {unknown-source}]：[2,5] 在org.apache.axiom.om.impl.builder.StAXOMBuilder.next（StAXOMBuilder.java:296）在org.apache.axiom.om.impl.llom.OMDocumentImpl.buildNext（OMDocumentImpl.java:135） at org.apache.axiom.om.impl.llom.OMNodeImpl.getNextOMSibling（OMNodeImpl.java:122）在org.apache.axiom.om.impl.llom.OMElementImpl.getNextOMSibling（OMElementImpl.java:343）在org.apache.axiom.om.impl.traverse.OMChildrenIterator.getNextNode（OMChildrenIterator.java:36）在org.apache.axiom.om.impl.traverse.OMAbstractIterator.hasNext（OMAbstractIterator.java:58） at org.jaxen.util.DescendantAxisIterator.hasNext（DescendantAxisIterator.java:101）在org.jaxen.expr.DefaultStep.evaluate（DefaultStep.java:152）在org.jaxen.expr.DefaultLocationPath.evaluate（DefaultLocationPath.java:140）在org.jaxen.expr.DefaultAbsoluteLocationPath.evaluate（DefaultAbsoluteLocationPath.java:113）在org.jaxen.expr.DefaultXPathExpr.asList（DefaultXPathExpr.java:102） at org.jaxen.BaseXPath.selectNodesForContext（BaseXPath.java:674）在org.jaxen.BaseXPath.selectNodes（BaseXPath.java:213）在org.jaxen.BaseXPath.evaluate（BaseXPath.java:172） at org.apache.synapse.util.xpath.SynapseXPath.stringValueOf（SynapseXPath.java:297）在org.apache.synapse.mediators.builtin.PropertyMediator.getResultValue（PropertyMediator.java:299）在org.apache.synapse.mediators.builtin.PropertyMediator.mediate（PropertyMediator.java:95）在org.apache.synapse.mediators.AbstractListMediator.mediate（AbstractListMediator.java:71）在org.apache.synapse.mediators.base.SequenceMediator.mediate（SequenceMediator.java:114） at org.apache.synapse.core.axis2.ProxyServiceMessageReceiver.receive（ProxyServiceMessageReceiver.java:154）在org.apache.axis2.engine.AxisEngine.receive（AxisEngine.java:180）在org.apache.axis2.transport.tcp.TCPWorker.run（TCPWorker.java:68）在org.apache.axis2.transport.base.threads.NativeWorkerPool $ 1.run（NativeWorkerPool.java:172） at java.util.concurrent.ThreadPoolExecutor $ Worker.runTask（ThreadPoolExecutor.java:886） at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:908） at java.lang.Thread.run（Thread.java:662）引起：com.ctc.wstx.exc.WstxParsingException：非法处理指令 target（“xml”）;规范保留xml（不区分大小写）。在 [row，col {unknown-source}]：[2,5] 在com.ctc.wstx.sr.StreamScanner.constructWfcException（StreamScanner.java:606）在com.ctc.wstx.sr.StreamScanner.throwParseError（StreamScanner.java:479）在com.ctc.wstx.sr.BasicStreamReader.readPIPrimary（BasicStreamReader.java:3903）在com.ctc.wstx.sr.BasicStreamReader.nextFromProlog（BasicStreamReader.java:2037）在com.ctc.wstx.sr.BasicStreamReader.closeContentTree（BasicStreamReader.java:2886）在com.ctc.wstx.sr.BasicStreamReader.nextFromTree（BasicStreamReader.java:2629）在com.ctc.wstx.sr.BasicStreamReader.next（BasicStreamReader.java:1062） at org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next（XMLStreamReaderWrapper.java:225） at org.apache.axiom.util.stax.dialect.DisallowDoctypeDeclStreamReaderWrapper.next（DisallowDoctypeDeclStreamReaderWrapper.java:34） at org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next（XMLStreamReaderWrapper.java:225）在org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext（StAXOMBuilder.java:681）在org.apache.axiom.om.impl.builder.StAXOMBuilder.next（StAXOMBuilder.java:214） ......还有25个

我使用了'\ n'，“\ r \ n”添加到我的消息中，但是没有使用它们。

我也尝试使用此链接中显示的方法。How to Send SOAP Messages Using TCP Transport并且它运行正常。

但我不能在我的项目中使用那种api。我怎样才能摆脱这个问题。

Answer 1

我能够使用示例客户端向ESB发送TCP消息，但您必须确保发送XML元素。

首先确保在axis2.xml中启用了tcp的transport reciver（repository / conf / axis2 / axis2.xml）

<transportReceiver name="tcp" class="org.apache.axis2.transport.tcp.TCPTransportListener" >

========================我的代理服务收回TCP消息===========

<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
       name="TCPProxy"
       transports="https,http"
       statistics="disable"
       trace="disable"
       startOnLoad="true">
   <target>
      <inSequence>
         <log level="full"/>
      </inSequence>
      <outSequence>
         <send/>
      </outSequence>
   </target>
   <parameter name="transport.tcp.port">6789</parameter>
   <parameter name="transport.tcp.contentType">application/xml</parameter>
   <description/>
</proxy>

==向TCP服务器发送消息的客户端====

import java.io.*;
import java.net.*;

class TCPClient {
    String host = "localhost";
    int port = 6789;
    Socket socket = null;
    public static void main(String args[]) throws Exception{
        String name ="Amani";
        TCPClient client = new TCPClient();
        String message = "<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\">\n" +  
        "<soapenv:Header/>\n" +
        "<soapenv:Body>\n" +
        "  <p:greet xmlns:p=\"http://greet.service.amani.org\">\n" + 
        "     <in>" + name + "</in>\n" +
        "  </p:greet>\n" +
        "</soapenv:Body>\n" +
        "</soapenv:Envelope>";
        client.SendToServer("<test></test>");
        client.close();
    }

    TCPClient(String _host, int _port) throws Exception{
        host = _host;
        port = _port;
        socket = new Socket(host, port);
    }
    TCPClient() throws Exception{
        socket = new Socket(host, port);
    }
    void SendToServer(String msg) throws Exception{
        //create output stream attached to socket
        PrintWriter outToServer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()));
        //send msg to server
        outToServer.print(msg + '\n');
        outToServer.flush();
    }
    String RecieveFromServer() throws Exception{
        //create input stream attached to socket
        BufferedReader inFromServer = new BufferedReader(new InputStreamReader (socket.getInputStream()));
        //read line from server
        String res = inFromServer.readLine(); // if connection closes on server end, this throws java.net.SocketException 
        return res;
    }
    void close() throws IOException{
        socket.close();
    }
}

代理wso2 esb中的TCP传输

1 个答案: