How can I get LOL match detail using RIOT API from Java's RestTemplate?

Question

I am trying to access RIOT API in Java using Spring's RestTemplate class. For some reason, I get a response code 500 and I can't determine why.

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The code trying to call the api:

RestTemplate restTemplate = new RestTemplate();

String matchString = restTemplate.getForObject(
    URI.create("https://europe.api.riotgames.com/lol/match/v5/matches/EUN1_3119578792/timeline?api_key=" + Consts.API_KEY),
    String.class);

System.out.println(matchString);

The exception is:

Exception in thread "main" org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 Server Error: [{"status":{"message":"Internal server error","status_code":500}}]
    at org.springframework.web.client.HttpServerErrorException.create(HttpServerErrorException.java:100)
    at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:172)
    at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:112)
    at org.springframework.web.client.ResponseErrorHandler.handleError(ResponseErrorHandler.java:63)
    at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:782)
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:740)
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:714)
    at org.springframework.web.client.RestTemplate.getForObject(RestTemplate.java:333)
    at Main.main(Main.java:11)

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This looks strange to me because when I call the same URL using the browser or Intellij Idea's http client, I get the correct json response without any internal server error.

{"metadata":{"dataVersion":"2","matchId":"EUN1_3119578792","participants":["9oLEhIbu5RP6HITfkJDnEy5WKOEof4Zg4TJ7GLI7ysxjzSsCpAOyyiFitA86RBpW6Tjm6l1hJHql1g","2G74UyXYGrgzOVJyhlnLvL-MBqSCOW59o1uX8KmmvDsjMeiQhrye1X6ByjmpBcIBzjNOLDZ0bExw5Q","YCqBU2zeTXQhKd9LyNn048Orj8zn2ePa2JoB7U66ql0HsVpurENBRN39HfwnmVCAr0iPX6YnvgFLFA",...

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Moreover, using the same java code for a different RIOT API's endpoint works fine:

RestTemplate restTemplate = new RestTemplate();

String matchString = restTemplate.getForObject(
                URI.create("https://eun1.api.riotgames.com/lol/summoner/v4/summoners/by-name/GargamelSmrdi?api_key=" + Consts.API_KEY),
                String.class);
System.out.println(matchString);

Standart output:

{"id":"_M1uK8Th4G262XkT0f9PVjUk_Dx96C4R3e7vSidKs0z5mfg","accountId":"QW10TRynWV0Zw48DrYqvO_KerzFepBCNOoUWtQHP2BFgdJZNlhtEPKXk",...

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I am lost. Do you have any idea what could be causing this internal server error and how to fix it?

Answer 1

I spent an afternoon finally solving this problem. You just need to use this request header.

HttpHeaders headers = new HttpHeaders(); headers.add("Accept","*/*");