spring - returning files in a response object

Question

I'm trying to return an image as a response in spring framework, it works just fine implementing like this:

@GetMapping(value = "/{photo}.{suf}")
public @ResponseBody byte[] getImage(@PathVariable("photo") String photo,@PathVariable("suf") String suf) throws IOException{
    InputStream in = FileUtils.openInputStream(new File("src/main/resources/static/" + photo + "." +suf));
    return IOUtils.toByteArray(in);
}

but when I try to return the image file inside a response object ,I get an org.springframework.web.HttpMediaTypeNotAcceptableException exception:

@GetMapping(value = "/{photo}.{suf}")
public @ResponseBody ResponseObject getImage(@PathVariable("photo") String photo,@PathVariable("suf") String suf) throws IOException{
    InputStream in = FileUtils.openInputStream(new File("src/main/resources/static/" + photo + "." +suf));
    return new ResponseObject(IOUtils.toByteArray(in),1);
}

here is my ResponseObject implementation:

public class ResponseObject {
private Object object;
private int status;
public ResponseObject(Object object,int status){
    this.object = object;
    this.status = status;
}
public Object getObject() {
    return this.object;
}

public void setObject(Object object) {
    this.object = object;
}

public int getStatus() {
    return status;
}

public void setStatus(int status) {
    this.status = status;
}

}

Does anyone have any idea why this is happening?

have you tried having `ResponseObject.object` as `byte[]` instead of Object, are you trying to receive `byte[]` as a string? — Zeronex, Dec 03 '17 at 18:19
@Zeronex I can't convert ResponseObject.object to byte[] because I'm using it in other places in my project — Kia Mhn, Dec 03 '17 at 22:01
@KiaMhn what is the **accept header** sent from your client side? This exception is thrown when spring cannot generate a response that is acceptable by the client. — Sattyaki, Dec 04 '17 at 05:47
@KiaMhn have you tried this https://stackoverflow.com/questions/7197268/spring-mvc-httpmediatypenotacceptableexception — Zeronex, Dec 04 '17 at 19:14
@KiaMhn you must have jackson library in your classpath. Jackson is required for conversion to json format (as your client side accepts json). — Sattyaki, Dec 05 '17 at 04:44

spring - returning files in a response object

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