在 Apache Cxf 端点中取消转义 Xml 特殊字符

问题描述 投票：0回答：2

我需要在我的 apache cxf 端点中返回未转义的 xml 字符串。下面我粘贴了我的代码部分、当前返回的 xml 字符串和所需的 xml 字符串：

@WebService(endpointInterface = "net.system.soapservice.result.ResultMgrPortType", serviceName = "ResultMgrPortType")
public class ResultServiceImpl implements ResultMgrPortType {

@Override
public String genericAPIResult(String resultMsg) {

    Map<String, String> processedResultMsg = DataFormatUtil.parseResultMsg(resultMsg);

    String response = "<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\">"
            + "<soapenv:Body>"
            + "<req:ResponseMsg"
            + " xmlns:req=\"http://api-v1.gen.mm.vodafone.com/mminterface/request\"><![CDATA[<?xml"
            + " version=\"1.0\""
            + "encoding=\"UTF-8\"?><response"
            + " xmlns=\"http://api-"
            + "v1.gen.mm.vodafone.com/mminterface/response\">"
            + "<ResponseCode>"+processedResultMsg.get("ResultCode")+"</ResponseCode>"
            + "<ConversationID>"+processedResultMsg.get("ConversationID")+"</ConversationID>"
            + "<ResponseDesc>Service result processed successfully.</ResponseDesc>"
            + "<OriginatorConversationID>"+processedResultMsg.get("OriginatorConversationID")+"</OriginatorConversationID>"
            + "<ServiceStatus>0</ServiceStatus>"
            + "</response>]]></req:ResponseMsg>"
            + "</soapenv:Body>"
            + "</soapenv:Envelope>";
    return response;
}

}

在我的日志中可以看到来自上述端点的 xml 响应：

ID: 4
Response-Code: 200
Encoding: UTF-8
Content-Type: text/xml
Headers: {}
Payload: <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><ResponseMsg xmlns="http://api-v1.gen.mm.vodafone.com/mminterface/result">&lt;soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"&gt;
&lt;soapenv:Body&gt;
&lt;req:ResponseMsg
 xmlns:req="http://api-v1.gen.mm.vodafone.com/mminterface/request"&gt;&lt;![CDATA[&lt;?xml
 version="1.0"
encoding="UTF-8"?&gt;&lt;response
 xmlns="http://api-
v1.gen.mm.vodafone.com/mminterface/response"&gt;&lt;ResponseCode&gt;0&lt;/ResponseCode&gt;&lt;ConversationID&gt;AG_20170411_000059047aba809d6631&lt;/ConversationID&gt;&lt;ResponseDesc&gt;Service result processed successfully.&lt;/ResponseDesc&gt;&lt;OriginatorConversationID&gt;902004_fhltd_60575.0&lt;/OriginatorConversationID&gt;&lt;ServiceStatus&gt;0&lt;/ServiceStatus&gt;&lt;/response&gt;]]&gt;&lt;/req:ResponseMsg&gt;
&lt;/soapenv:Body&gt;
&lt;/soapenv:Envelope&gt;</ResponseMsg></soap:Body></soap:Envelope>  
--------------------------------------

客户端期望的 xml：

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
   <soap:Body>
      <ResponseMsg xmlns="http://api-v1.gen.mm.vodafone.com/mminterface/result">
         <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
            <soapenv:Body>
               <req:ResponseMsg xmlns:req="http://api-v1.gen.mm.vodafone.com/mminterface/request"><![CDATA[<?xml version="1.0"encoding="UTF-8"?><response xmlns="http://api-v1.gen.mm.vodafone.com/mminterface/response"><ResponseCode>0</ResponseCode><ConversationID>AG_20170406_00004ddc3d70f6ba93f0</ConversationID><ResponseDesc>Service result processed successfully.</ResponseDesc><OriginatorConversationID>902004_fhltd_94802.0</OriginatorConversationID><ServiceStatus>0</ServiceStatus></response>]]></req:ResponseMsg>
            </soapenv:Body>
         </soapenv:Envelope>
      </ResponseMsg>
   </soap:Body>
</soap:Envelope>

注意：响应中不应包含 

&lt
和 
&gt
。也许我应该在 
apache-cxf-services.xml
文件中添加一些配置或创建一个拦截器来更改此行为。预先感谢您的时间和精力。

java xml apache web-services cxf
2个回答
3
投票

我在这里回答我自己的问题。解决方案是创建一个拦截器来强制cxf中的jaxb对CDATA中的响应字符串进行编码。因此，我从立即响应中删除了 CDATA（现在应该由拦截器处理），结果响应应该类似于：

String response = "<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\">"
            + "<soapenv:Body>"
            + "<req:ResponseMsg"
            + " xmlns:req=\"http://api-v1.gen.mm.vodafone.com/mminterface/request\"><?xml"
            + " version=\"1.0\""
            + "encoding=\"UTF-8\"?><response"
            + " xmlns=\"http://api-"
            + "v1.gen.mm.vodafone.com/mminterface/response\">"
            + "<ResponseCode>"+processedResultMsg.get("ResultCode")+"</ResponseCode>"
            + "<ConversationID>"+processedResultMsg.get("ConversationID")+"</ConversationID>"
            + "<ResponseDesc>Service result processed successfully.</ResponseDesc>"
            + "<OriginatorConversationID>"+processedResultMsg.get("OriginatorConversationID")+"</OriginatorConversationID>"
            + "<ServiceStatus>0</ServiceStatus>"
            + "</response></req:ResponseMsg>"
            + "</soapenv:Body>"
            + "</soapenv:Envelope>";

然后创建一个拦截器以将 CDATA 添加回 PRE_STREAM 阶段：

import java.io.OutputStream;
import javax.xml.stream.XMLStreamWriter;
import org.apache.cxf.interceptor.AttachmentOutInterceptor;
import org.apache.cxf.message.Message;
import org.apache.cxf.phase.AbstractPhaseInterceptor;
import org.apache.cxf.phase.Phase;
import org.apache.cxf.staxutils.StaxUtils;


public class CdataWriterInterceptor extends AbstractPhaseInterceptor<Message> {

    public CdataWriterInterceptor() {
        super(Phase.PRE_STREAM);
        addAfter(AttachmentOutInterceptor.class.getName());
    }

    @Override
    public void handleMessage(Message message) {
        System.out.println("############# CdataWriterInterceptor Executed #######################");
        message.put("disable.outputstream.optimization", Boolean.TRUE);
        XMLStreamWriter writer
                = StaxUtils.createXMLStreamWriter(message.getContent(OutputStream.class));
        message.setContent(XMLStreamWriter.class, new CDataXMLStreamWriter(writer));
    }
}

最后在CDataXMLStreamWriter中添加CDATA，如下所示：

import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import org.apache.cxf.staxutils.DelegatingXMLStreamWriter;

public class CDataXMLStreamWriter extends DelegatingXMLStreamWriter {

    private String currentElementName;

    public CDataXMLStreamWriter(XMLStreamWriter del) {
        super(del);
    }

    @Override
    public void writeCharacters(String text) throws XMLStreamException {
            System.out.println("WritingCData" + text);
            super.writeCData(text);
    }

    private boolean checkIfCDATAneededForCurrentElement() {
        if ("MessageBody".equals(currentElementName)) {
            return true;
        }
        return false;
    }

    @Override
    public void writeStartElement(String prefix, String local, String uri) throws XMLStreamException {
        currentElementName = local;
        super.writeStartElement(prefix, local, uri);
    }
}

这个想法是，如果 xml 字符串在 CDATA 部分内发送，则 cxf 内部 xml 解析器不会解析它，因此特殊字符不会被转义。这对我有用，我希望对其他人也有用。更多详细信息请参见：CXF jaxb send string as CData

0
投票

7 年后，这实际上帮助我解决了转义所有不需要的字符的问题。

这是我的解决方案，希望它可以帮助有需要的人，同时，如果有人可以改进它，他们将值得我尊重！

package com.rc.rcib.siocs.proship.bridge.interceptor;

import org.apache.commons.io.IOUtils;
import org.apache.cxf.interceptor.AttachmentOutInterceptor;
import org.apache.cxf.message.Message;
import org.apache.cxf.phase.AbstractPhaseInterceptor;
import org.apache.cxf.phase.Phase;

import java.io.InputStream;
import java.nio.charset.StandardCharsets;

public class SpecialCharsInterceptor extends AbstractPhaseInterceptor<Message> {

    public SpecialCharsInterceptor() {
        super(Phase.PRE_STREAM);
        addAfter(AttachmentOutInterceptor.class.getName());
    }

    @Override
    public void handleMessage(Message message) {
        InputStream content = message.getContent(InputStream.class);
        String contentString = null;
        try {
            contentString = IOUtils.toString(content, StandardCharsets.UTF_8);
            contentString = contentString.replace("&", "&amp;");
        } catch (Exception e) {
            throw new RuntimeException(e);
        }

        message.setContent(InputStream.class, IOUtils.toInputStream(contentString, StandardCharsets.UTF_8));
    }
}
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