java - Apache CXF 拦截器覆盖内容类型

Question

我有一个邮政服务，仅接受文件上传的 POST 请求:

@POST
@Path("uploadfile")
@Consumes({ "*/*" })
@Produces({ "*/*" })
public Response uploadFile(@Context UriInfo uri, @Context HttpHeaders httpHeaders, MultipartBody multipartBody);

如果前端客户端设置了“错误”的 Content-Type，则会收到 415 响应错误。使用 InInterceptor 我想将消息重新设置为 MultipartBody:

@Override
public void handleMessage(Message message) throws Fault {
    System.out.println(message);
}

此处消息类型为org.apache.cxf.message.XMLMessage 。如何更改此设置，使我的 uploadFile 方法能够通过 MultipartBody 接受此请求？

PS: 前端客户端未知且无法更改，目前已经发送错误的内容类型...

我尝试过更改内容类型:

@Override
public void handleMessage(Message message) throws Fault {
    Map<String,String> map = (Map<String, String>)message.get(Message.PROTOCOL_HEADERS);
    message.put(Message.CONTENT_TYPE, "multipart/form-data");
    map.put("content-type", "[multipart/form-data]");
    message.put(Message.PROTOCOL_HEADERS, map);
}

但后来我得到:

java.lang.RuntimeException: org.apache.cxf.interceptor.Fault: java.lang.String cannot be cast to java.util.List
    at org.apache.cxf.interceptor.AbstractFaultChainInitiatorObserver.onMessage(AbstractFaultChainInitiatorObserver.java:116)
    at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:333)
    at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)

Answer 1

好吧，我发现我选错了......

Map<String,List> map = (Map<String, List>)message.get(Message.PROTOCOL_HEADERS);

不是

Map<String,String> map = (Map<String, String>)message.get(Message.PROTOCOL_HEADERS);

所以现在它可以工作了......

@Override
public void handleMessage(Message message) throws Fault {
    Map<String,List> map = (Map<String, List>)message.get(Message.PROTOCOL_HEADERS);
    message.put(Message.CONTENT_TYPE, "multipart/form-data");
    map.put("content-type", Collections.singletonList("multipart/form-data"));
    message.put(Message.PROTOCOL_HEADERS, map);
}