SAP PO 处理一些特殊字符，比如XML有效载荷内容中的“&”。转换中会引起报错：com.sap.aii.utilxi.misc.api.BaseRuntimeException; Character reference "&#

解决方案：可以通Java Mapping 做一次转换。

import java.io.*;
import java.util.HashMap;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import com.sap.aii.mapping.api.AbstractTransformation;
import com.sap.aii.mapping.api.StreamTransformationException;
import com.sap.aii.mapping.api.TransformationInput;
import com.sap.aii.mapping.api.TransformationOutput;
public class EscapeSpecialChar extends AbstractTransformation
{
 public void transform(TransformationInput transformationInput, TransformationOutput transformationOutput)
                                                                        throws StreamTransformationException
 {
  
    InputStream inputstream = transformationInput.getInputPayload().getInputStream();
    OutputStream outputstream = transformationOutput.getOutputPayload().getOutputStream();
 String inputXML = "";
 try {
  BufferedReader reader = new BufferedReader(new InputStreamReader(inputstream));
  String temp = "";
  
  while((temp = reader.readLine()) != null)
  {
   if (temp != null)
   inputXML += temp;
  }
  
 
  String outXML = inputXML.replaceAll("&", "&");
 
  
  outputstream.write(outXML.getBytes());
 } catch (Exception eex) {
  throw new StreamTransformationException(eex.toString());  
 }
 
 }
 
}