I have created a REST service using spring boot. Initially I had multiple parameters (Strings and Ints), but it was suggested that I send the request in json and automatically convert it to an object. But when I call the following REST service I get the following error:
Failed to convert value of type 'java.lang.String' to required type 'xxxMobileCreatives'
@RequestMapping(method = RequestMethod.POST, value = "/creative")
public @ResponseBody void uploadCreative(@RequestParam("mobileCreatives") MobileCreatives mobileCreatives,
@RequestParam("file") MultipartFile file){
logger.trace("Sending creative to DFP");
mobileCreatives.setFile(file);
dfpAssetsManager.createCreative(mobileCreatives);
}
I would like to know why it is thinking that the input is a string, when the input is the following JSON:
{"networkCode":6437988,"iO":"test345345","name":"test4354","advertiserId":11659988,"clickThroughUrl":"test.com"}
My class MobileCreative has a constructor that is in the same format as the json. Do I need to add any annotations to the class MobileCreative becasue an example I was looking at didn't have any?
You want @RequestPart
not @RequestParam
. Per the documentation ...
The main difference is that when the method argument is not a String, @RequestParam relies on type conversion via a registered Converter or PropertyEditor while @RequestPart relies on HttpMessageConverters taking into consideration the 'Content-Type' header of the request part. @RequestParam is likely to be used with name-value form fields while @RequestPart is likely to be used with parts containing more complex content (eg JSON, XML)
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