added fix for issue 1236

Author: r-sreesaran

modules/swagger-parser-v3/src/main/java/io/swagger/v3/parser/util/OpenAPIDeserializer.java

@@ -413,7 +413,12 @@ public Server getServer(ObjectNode obj, String location, ParseResult result, Str
 					if("http".equals(absURI.getScheme()) || "https".equals(absURI.getScheme())){
 						value = absURI.resolve(new URI(value)).toString();
 					}
+                    else {
+                        result.warning(location," invalid url : "+value);
+                    }
+
 				} catch (URISyntaxException e) {
+                    result.warning(location,"invalid url : "+value);
 					e.printStackTrace();
 				}
 

modules/swagger-parser-v3/src/test/java/io/swagger/v3/parser/test/OpenAPIV3ParserTest.java

@@ -2192,4 +2192,14 @@ public void testParseOptionsSkipMatchesTrue() {
     private static int getDynamicPort() {
         return new Random().ints(10000, 20000).findFirst().getAsInt();
     }
+
+    @Test
+    public void testIssue1236() {
+        final ParseOptions options = new ParseOptions();
+        options.setResolve(true);
+
+        SwaggerParseResult result = new OpenAPIV3Parser()
+                .readLocation("src/test/resources/issue-1236/petstore.json",null,options);
+        assertEquals(result.getMessages().get(0),"attribute .servers. invalid url : /te st/sample.yaml");
+    }
 }