I fixed this problem with writting stubs using my custom RequestMatcherExtension in my stubs like this:

{
   "request":{
      "customMatcher":{
         "name":"optimized-request-matcher",
         "parameters":{
            "urlPath":"/my-url",
            "method":"GET"
         }
      }
   },
   "response":{
      "status":200,
      "body":"default test mapping",
      "headers":{
         "Content-Type":"text/plain"
      }
   }
}

with this implementation:

public class OptimizedRequestMatcher extends RequestMatcherExtension {

  @Override
  public String getName() {
    return "optimized-request-matcher";
  }

  @Override
  public MatchResult match(Request request, Parameters parameters) {
    RequestPattern originalRequestPattern = Json.getObjectMapper().convertValue(parameters, RequestPattern.class);

    MatchResult methodMatchResult = originalRequestPattern.getMethod().match(request.getMethod());
    MatchResult urlMatchResult = originalRequestPattern.getUrlMatcher().match(request.getUrl());
    if (!methodMatchResult.isExactMatch() || !urlMatchResult.isExactMatch()) {
      return MatchResult.aggregateWeighted(
        WeightedMatchResult.weight(urlMatchResult, 10.0),
        WeightedMatchResult.weight(methodMatchResult, 3.0)
      );
    }
    RequestPattern requestPattern = new RequestPattern(
      WireMock.anyUrl(),
      RequestMethod.ANY,
      originalRequestPattern.getHeaders(),
      originalRequestPattern.getQueryParameters(),
      originalRequestPattern.getCookies(),
      originalRequestPattern.getBasicAuthCredentials(),
      originalRequestPattern.getBodyPatterns(),
      originalRequestPattern.getCustomMatcher(),
      originalRequestPattern.getMatcher(),
      originalRequestPattern.getMultipartPatterns());

    return requestPattern.match(request);
  }
}

and starting server with this extension, example test case:

  @Test
  public void optimizedRequestMatcherTest() throws Exception {
    WireMockServer wireMockServer = new WireMockServer(
      wireMockConfig().extensions(OptimizedRequestMatcher.class.getName()).port(0));
    wireMockServer.start();

    CloseableHttpClient httpClient = HttpClients.createDefault();
    HttpGet request = new HttpGet("http://localhost:" + wireMockServer.port() + "/my-url");
    HttpResponse httpResponse = httpClient.execute(request);

    assertEquals("default test mapping", EntityUtils.toString(httpResponse.getEntity()));
  }

Body pattern matching possibly being attempted despite URL not matching #652

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