代理wso2 esb中的TCP傳輸

Question

當使用此代碼發送我的soap xml時，我想通過TCP傳輸將請求發送到代理服務

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

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

outToServer.writeBytes("soap xml instance");

clientSocket.close();

它工作正常，我的生意還在繼續。

但是當我發送兩個xml而不關閉套接字時，如下所示：

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

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

outToServer.writeBytes("soap xml instance");

outToServer.writeBytes("another soap instance");

clientSocket.close();

它總是拋出此異常：

TID：[0] [ESB] [2013-06-28 13：36：10,838]錯誤{org.apache.axis2.transport.tcp.TCPWorker}-通過Axis2引擎{org.apache.axis2處理TCP請求時出錯org.apache.axiom.om.OMException：com.ctc.wstx.exc.WstxParsingException：非法處理指令目標（“ xml”）； xml（不區分大小寫）由規范保留。 在[row，col {unknown-source}]：在org.apache.axiom.om.impl上的[2,5]在org.apache.axiom.om.impl.builder.StAXOMBuilder.next（StAXOMBuilder.java:296） org.apache.axiom.om.impl.llom.OMNodeImpl.getNextOMSibling（OMNodeImpl.java:122）的.llom.OMDocumentImpl.buildNext（OMDocumentImpl.java:135）org.apache.axiom.om.impl.llom.OMElementImpl org.apache.axiom.om.impl.traverse.OMChildrenIterator.getNextNode（OMChildrenItom.java:36）上的.getNextOMSibling（OMElementImpl.java:343）org.apache.axiom.om.impl.traverse.OMAbstract中的OMAbstractrenerator.hasNext（OMAbstractIterator .java：58）位於org.jaxen.util.DescendantAxisIterator.hasNext（DescendantAxisIterator.java:101）位於org.jaxen.expr.DefaultStep.evaluate（DefaultStep.java:152）位於org.jaxen.expr.DefaultLocationPath.evaluate（ org.jaxen.expr.DefaultAbsoluteLocationPath.evaluate（DefaultAbsoluteLocationPath.java:113）處的DefaultLocationPath.java:140）org.jaxen.BaseXPath.selectNodesForContext（BaseXPath）處的org.jaxen.expr.DefaultXPathExpr.asList（DefaultXPathExpr.java:102）處的DefaultLocationPath.java:140）的.java：6 74）在org.jaxen.BaseXPath.selectNodes（BaseXPath.java:213）在org.jaxen.BaseXPath.evaluate（BaseXPath.java:172）在org.apache.synapse.util.xpath.SynapseXPath.stringValueOf（SynapseXPath.java ：297），位於org.apache的org.apache.synapse.mediators.builtin.PropertyMediator.mediate（PropertyMediator.java:95）的org.apache.synapse.mediators.builtin.PropertyMediator.getResultValue（PropertyMediator.java:299）處。 org.apache.synapse.mediators.base.SequenceMediator.mediate（SequenceMediator.java:114）上的synapse.mediators.AbstractListMediator.mediate（AbstractListMediator.java:71）在org.apache.synapse.core.axis2.ProxyServiceMessageReceiver.receive（ org.apache.axis2.engine.AxisEngine.receive（AxisEngine.java:180）在org.apache.axis2.transport.tcp.TCPWorker.run（TCPWorker.java:68）處的ProxyServiceMessageReceiver.java:154） java.util.concurrent.ThreadPoolExecutor $ Worker.runTask（ThreadPoolExecutor.java:886）上的.axis2.transport.base.threads.NativeWorkerPool $ 1.run（NativeWorkerPool.java:172） java.lang.Thread.run（Thread.java:662）上的ncurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:908）原因：com.ctc.wstx.exc.WstxParsingException：非法處理指令目標（“ xml” ）; xml（不區分大小寫）由規范保留。 在[row，col {unknown-source}]：在com.ctc.wstx.sr.StreamScanner.constructWfcException（StreamScanner.java:606）的com.ctc.wstx.sr.StreamScanner.throwParseError（StreamScanner）的[2,5] .java：479），位於com.ctc.wstx.sr.BasicStreamReader.readPIPrimary（BasicStreamReader.java:3903），位於com.ctc.wstx.sr.BasicStreamReader.nextFromProlog（BasicStreamReader.java:2037）。 com.ctc.wstx.sr.BasicStreamReader.nextFromTree（BasicStreamReader.java:2629）上的sr.BasicStreamReader.closeContentTree（BasicStreamReader.java:2886）com.ctc.wstx.sr.BasicStreamReader.next（BasicStreamReader.java）在org.apache.axiom.util.stax.dialect.Disallow。位於org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext（StAXOMBuilder.java:681）的.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next（XMLStreamReaderWrapper.java:225） rg.apache.axiom.om.impl.builder.StAXOMBuilder.next（StAXOMBuilder.java:214）...還有25個

我曾在郵件中附加“ \\ n”，“ \\ r \\ n”，但沒有一個使之起作用。

我也嘗試過使用此鏈接中闡述的方法。 如何使用TCP傳輸發送SOAP消息 ，效果很好。

但是我無法在我的項目中使用這種api。 我如何擺脫這個問題。

Answer 1

我能夠使用示例客戶端將TCP消息發送到ESB，但是您必須確保發送XML元素。

首先，請確保已在axis2.xml（repository / conf / axis2 / axis2.xml）中為tcp啟用了傳輸接收器

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

========================我的代理服務接收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服務器發送消息的客戶端====

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();
    }
}