Unable to send file to rest webservice via apache camel http

Question

I am new to Camel and I am facing an issue while sending files to webservice via camel http.
I have a rest web service which consumes Multipart form data type content an

Answer 1

Well, there are several things that can be improved in your code.

First, since you are using a MultipartEntityBuilder, that means you're using Apache's HttpClient version 4.3+, so for best compatibility you should use Camel's HTTP4 component.

Third, in an example as small as this, you don't really need to use the converter, you can do something like this:

public class LoggingMain {

    private static final Logger logger = Logger.getLogger(LoggingMain.class);

    public static void main(String[] args) throws Exception {
        CamelContext camelContext = new DefaultCamelContext();
        try {
            camelContext.addRoutes(new RouteBuilder() {
                @Override
                public void configure() throws Exception {
                    from("file:C:\\temp?delay=5000&move=processed&moveFailed=error&antExclude=**/processed/**,**/error/**")
                            .process(new Processor() {
                                public void process(Exchange exchange) throws Exception {
                                    StringBody username = new StringBody("username", ContentType.MULTIPART_FORM_DATA);
                                    StringBody password = new StringBody("password", ContentType.MULTIPART_FORM_DATA);

                                    MultipartEntityBuilder multipartEntityBuilder = MultipartEntityBuilder.create();
                                    multipartEntityBuilder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
                                    multipartEntityBuilder.addPart("username", username);
                                    multipartEntityBuilder.addPart("password", password);

                                    String filename = (String) exchange.getIn().getHeader(Exchange.FILE_NAME);
                                    File file = exchange.getIn().getBody(File.class);
                                    multipartEntityBuilder.addPart("upload", new FileBody(file, ContentType.MULTIPART_FORM_DATA, filename));

                                    exchange.getIn().setBody(multipartEntityBuilder.build());
                                }
                            })
                            .to("http4://localhost:8080/JAX_RS_Application/resource/restwb/upload");
                }
            });

            camelContext.getRestConfiguration();
            camelContext.start();
            Thread.sleep(5000);
            camelContext.stop();

        } catch (Exception e) {
            logger.error(e.getMessage());
        }
    }

}

I hope this helps!