java - 如何修复文件未将自身附加到 Java 中的 SAAJ SOAP 消息的问题？

Question

我正在尝试为 SOAP Web 服务构建客户端。我正在将 xml 文件中的请求读取到 String 并将其转换为 SOAPMessage 类。 SOAP 消息的主体有两个元素，其中之一应该是附加文件(元素具有标签 DataFile)。因此，我从文件创建 AttachmentPart 并将其添加到 SOAPMessage。但是，接收应用程序表示该消息没有附加文件(消息的 DataHandler==null)。谁能告诉我为什么文件没有与请求一起正确发送？

这是来自 xml 文件的 SOAP 请求:

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xro="http://x-road.eu/xsd/xroad.xsd" xmlns:iden="http://x-road.eu/xsd/identifiers" xmlns:stat="http://stat-v6.x-road.eu">
   <soapenv:Header>
      <xro:protocolVersion>4.0</xro:protocolVersion>
      <xro:issue></xro:issue>
      <xro:userId>EE700031011</xro:userId>
      <xro:id>123</xro:id>
      <xro:service iden:objectType="SERVICE">
         <iden:xRoadInstance>ee-test</iden:xRoadInstance>
         <iden:memberClass>GOV</iden:memberClass>
         <iden:memberCode>70000332</iden:memberCode>
         <!--Optional:-->
         <iden:subsystemCode>estat</iden:subsystemCode>
         <iden:serviceCode>SubmitData</iden:serviceCode>
         <!--Optional:-->
         <iden:serviceVersion>v1</iden:serviceVersion>
      </xro:service>
     <xro:client iden:objectType="SUBSYSTEM"> 
         <iden:xRoadInstance>ee-test</iden:xRoadInstance>
         <iden:memberClass>GOV</iden:memberClass>
         <iden:memberCode>70000332</iden:memberCode>
         <!--Optional:-->
         <iden:subsystemCode>sa-client</iden:subsystemCode>
      </xro:client>
   </soapenv:Header>
   <soapenv:Body>
      <stat:SubmitDataRequest>
         <DataFile>cid:Report.xml</DataFile>
         <XSDValidationOnly>1</XSDValidationOnly>
      </stat:SubmitDataRequest>
   </soapenv:Body>
</soapenv:Envelope>

Report.xml 是我尝试附加到 SOAP 消息的文件。

这是我的 SoapClient 类:

import com.sun.istack.internal.Nullable;
import org.apache.commons.io.IOUtils;
import org.xml.sax.InputSource;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.xml.namespace.QName;
import javax.xml.soap.*;
import javax.xml.transform.sax.SAXSource;
import java.io.*;
import java.net.URL;

public class SoapClient {
// soapMessage is the request read from an xml file
    SOAPMessage callSoapWebServiceFromString(String soapEndpointUrl, String soapMessage, @Nullable File attachment) {
        try {
            // Create SOAP Connection
            SOAPConnectionFactory soapConnectionFactory = SOAPConnectionFactory.newInstance();
            SOAPConnection soapConnection = soapConnectionFactory.createConnection();

            // Send SOAP Message to SOAP Server
            MessageFactory messageFactory = MessageFactory.newInstance();
            SOAPMessage message = messageFactory.createMessage();
            message.getSOAPPart().setContent(new SAXSource(new InputSource(new StringReader(soapMessage))));

            if (attachment != null) {
                DataHandler handler = new DataHandler(new FileDataSource(attachment));
                AttachmentPart attachPart = message.createAttachmentPart(handler);
                message.addAttachmentPart(attachPart);
                message.saveChanges();

                // String stringToWrite = IOUtils.toString(handler.getInputStream(), "utf-8");
                // System.out.println("stringToWrite: " + stringToWrite);
            }
            URL endpoint = new URL(soapEndpointUrl);
            SOAPMessage response = soapConnection.call(message, endpoint);
            // System.out.println("Response SOAP Message:");
            // response.writeTo(System.out);

            soapConnection.close();

            return response;
        } catch (Exception e) {
            System.err.println("\nError occurred while sending SOAP Request to Server!\nMake sure you have the correct endpoint URL and SOAPAction!\n");
            e.printStackTrace();
        }
        return null;
    }


}

Answer 1

找到答案:attachPart.setContentId("<"+ Attachment.getName() + ">");