Spring integration with Spring boot 1.4.0. Getting error - spring-boot

Question

I upgraded from Spring boot 1.2.3 to 1.4.0 alongwith dependencies for Spring integration i.e. 4.3.1
I'm sending JSON content but getting an error on request submit. Previously it was working fine with Spring boot 1.2.3 and spring integration 4.1.2
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.0.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-ws</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-xml</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-file</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-http</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>commons-httpclient</groupId>
<artifactId>commons-httpclient</artifactId>
<version>3.1</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
</dependency>
<int-http:inbound-gateway id="controller" request-channel="requestChannel" reply-channel="responseChannel" path="/services/test"
supported-methods="POST" request-payload-type="com.example.SampleRequest" >
<int-http:request-mapping consumes="application/json"
produces="application/json" />
</int-http:inbound-gateway>
public class SampleRequest {
private String requestType;
private String reference;
private String nicNumber;
}
Error :
2016-12-20 15:06:14 [http-nio-8080-exec-1] DEBUG o.s.w.t.h.WebServiceMessageReceiverHandlerAdapter : Accepting incoming [org.springframework.ws.transport.http.HttpServletConnection#74518c78] at [http://localhost:8080/services/test]
2016-12-20 15:06:14 [http-nio-8080-exec-1] ERROR c.s.xml.internal.messaging.saaj.soap : SAAJ0537: Invalid Content-Type. Could be an error message instead of a SOAP message
2016-12-20 15:06:14 [http-nio-8080-exec-1] DEBUG o.s.w.t.h.MessageDispatcherServlet : Could not complete request
org.springframework.ws.soap.SoapMessageCreationException: Could not create message from InputStream: Invalid Content-Type:application/json. Is this an error message instead of a SOAP response?; nested exception is com.sun.xml.internal.messaging.saaj.SOAPExceptionImpl: Invalid Content-Type:application/json. Is this an error message instead of a SOAP response?
at org.springframework.ws.soap.saaj.SaajSoapMessageFactory.createWebServiceMessage(SaajSoapMessageFactory.java:216)
at org.springframework.ws.soap.saaj.SaajSoapMessageFactory.createWebServiceMessage(SaajSoapMessageFactory.java:60)
at org.springframework.ws.transport.AbstractWebServiceConnection.receive(AbstractWebServiceConnection.java:92)
at org.springframework.ws.transport.support.WebServiceMessageReceiverObjectSupport.handleConnection(WebServiceMessageReceiverObjectSupport.java:87)
at org.springframework.ws.transport.http.WebServiceMessageReceiverHandlerAdapter.handle(WebServiceMessageReceiverHandlerAdapter.java:61)
at org.springframework.ws.transport.http.MessageDispatcherServlet.doService(MessageDispatcherServlet.java:293)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
Caused by: com.sun.xml.internal.messaging.saaj.SOAPExceptionImpl: Invalid Content-Type:application/json. Is this an error message instead of a SOAP response?
at com.sun.xml.internal.messaging.saaj.soap.MessageImpl.identifyContentType(MessageImpl.java:655)
at com.sun.xml.internal.messaging.saaj.soap.MessageImpl.<init>(MessageImpl.java:301)
at com.sun.xml.internal.messaging.saaj.soap.ver1_1.Message1_1Impl.<init>(Message1_1Impl.java:65)
at com.sun.xml.internal.messaging.saaj.soap.ver1_1.SOAPMessageFactory1_1Impl.createMessage(SOAPMessageFactory1_1Impl.java:63)

Answer 1

Spring boot 1.2.3 didn't have WebService (SOAP) support. Right now we have WebServicesAutoConfiguration since 1.4.0. There you can find this code:
String path = this.properties.getPath();
String urlMapping = (path.endsWith("/") ? path + "*" : path + "/*");
ServletRegistrationBean registration = new ServletRegistrationBean(servlet,
urlMapping);
Where you bump unexpected default in the WebServicesProperties:
#NotNull
#Pattern(regexp = "/[^?#]*", message = "Path must start with /")
private String path = "/services";
So, that newly created MessageDispatcherServlet intercepts all your requests because you expect them on the path="/services/test".
If you are not interested in the SOAP server side in your application you can just exclude WebServicesAutoConfiguration from auto-configuration.
Otherwise consider to change your service URL or specify something another for the spring.webservices.path application property.