Pass through SOAP proxy spring Unsupported media type multipart/related; type="application/xop+xml"; boundary

Question

Hi I am trying to implement a pass through SOAP proxy via @RestController in spring. For this purpose I have mapped a rest controller in following way:

@RestController
class MyProxy {

@PostMapping(value = "/**")  
  public ResponseEntity<String> proxyPost(@RequestBody(required = false) String body, HttpServletRequest request) {}
}

The regular SOAP requests are going OK. The problem comes when a MTOM type of SOAP request is send via the proxy. Then spring failes with unrecognized content type. Here is the exception:

Caused by: org.springframework.web.multipart.MultipartException: Failed to parse multipart servlet request; nested exception is javax.servlet.ServletException: Unsupported Content-Type [multipart/related; type="application/xop+xml"; boundary="uuid:dacf4733-80b4-41bc-b2e1-db69b6beadf6"; start="<[email protected]>"; start-info="text/xml"], expected [multipart/form-data]
    at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.handleParseFailure(StandardMultipartHttpServletRequest.java:124)
    at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.parseRequest(StandardMultipartHttpServletRequest.java:115)
    at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.<init>(StandardMultipartHttpServletRequest.java:88)
    at org.springframework.web.multipart.support.StandardServletMultipartResolver.resolveMultipart(StandardServletMultipartResolver.java:122)
    at org.springframework.web.servlet.DispatcherServlet.checkMultipart(DispatcherServlet.java:1205)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1039)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
    ... 60 common frames omitted
Caused by: javax.servlet.ServletException: Unsupported Content-Type [multipart/related; type="application/xop+xml"; boundary="uuid:dacf4733-80b4-41bc-b2e1-db69b6beadf6"; start="<[email protected]>"; start-info="text/xml"], expected [multipart/form-data]
    at org.eclipse.jetty.server.Request.getParts(Request.java:2407)
    at javax.servlet.http.HttpServletRequestWrapper.getParts(HttpServletRequestWrapper.java:317)
    at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.parseRequest(StandardMultipartHttpServletRequest.java:95)
    ... 66 common frames omitted

Answer 1

When receiving a multipart/* request Spring delegates this to the configured Multipart handler. This is enabled by default and for this case should be disabled.

spring.servlet.multipart.enabled=false

Adding the above to your properties should disable it and prevent the parsing, so you can handle it in your controller.