Fix for issue 1236

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

@@ -2261,6 +2261,15 @@ private static int getDynamicPort() {
     }
 
     @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");
+    }
+
     public void testSampleParser() {
         final String location = "src/test/resources/issue-1211.json";
 

modules/swagger-parser-v3/src/test/resources/issue-1236/petstore.json

@@ -0,0 +1,131 @@
+{
+  "openapi": "3.0.2",
+  "info": {
+    "title": "Swagger Petstore - OpenAPI 3.0",
+    "description": "This is a sample Pet Store Server based on the OpenAPI 3.0 specification.  You can find out more about\nSwagger at [http://swagger.io](http://swagger.io). In the third iteration of the pet store, we've switched to the design first approach!\nYou can now help us improve the API whether it's by making changes to the definition itself or to the code.\nThat way, with time, we can improve the API in general, and expose some of the new features in OAS3.\n\nSome useful links:\n- [The Pet Store repository](https://github.com/swagger-api/swagger-petstore)\n- [The source API definition for the Pet Store](https://github.com/swagger-api/swagger-petstore/blob/master/src/main/resources/openapi.yaml)",
+    "termsOfService": "http://swagger.io/terms/",
+    "contact": {
+      "email": "apiteam@swagger.io"
+    },
+    "license": {
+      "name": "Apache 2.0",
+      "url": "http://www.apache.org/licenses/LICENSE-2.0.html"
+    },
+    "version": "1.0.4"
+  },
+  "externalDocs": {
+    "description": "Find out more about Swagger",
+    "url": "http://swagger.io"
+  },
+  "servers": [
+    {
+      "url": "/te st/sample.yaml"
+    }
+  ],
+  "tags": [
+    {
+      "name": "pet",
+      "description": "Everything about your Pets",
+      "externalDocs": {
+        "description": "Find out more",
+        "url": "http://swagger.io"
+      }
+    },
+    {
+      "name": "store",
+      "description": "Operations about user"
+    },
+    {
+      "name": "user",
+      "description": "Access to Petstore orders",
+      "externalDocs": {
+        "description": "Find out more about our store",
+        "url": "http://swagger.io"
+      }
+    }
+  ],
+  "paths": {
+    "/user/login": {
+      "get": {
+        "tags": [
+          "user"
+        ],
+        "summary": "Logs user into the system",
+        "description": "",
+        "operationId": "loginUser",
+        "parameters": [
+          {
+            "name": "username",
+            "in": "query",
+            "description": "The user name for login",
+            "required": false,
+            "schema": {
+              "type": "string"
+            }
+          },
+          {
+            "name": "password",
+            "in": "query",
+            "description": "The password for login in clear text",
+            "required": false,
+            "schema": {
+              "type": "string"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "successful operation",
+            "headers": {
+              "X-Rate-Limit": {
+                "description": "calls per hour allowed by the user",
+                "schema": {
+                  "type": "integer",
+                  "format": "int32"
+                }
+              },
+              "X-Expires-After": {
+                "description": "date in UTC when toekn expires",
+                "schema": {
+                  "type": "string",
+                  "format": "date-time"
+                }
+              }
+            },
+            "content": {
+              "application/xml": {
+                "schema": {
+                  "type": "string"
+                }
+              },
+              "application/json": {
+                "schema": {
+                  "type": "string"
+                }
+              }
+            }
+          },
+          "400": {
+            "description": "Invalid username/password supplied"
+          }
+        }
+      }
+    },
+    "/user/logout": {
+      "get": {
+        "tags": [
+          "user"
+        ],
+        "summary": "Logs out current logged in user session",
+        "description": "",
+        "operationId": "logoutUser",
+        "parameters": [],
+        "responses": {
+          "default": {
+            "description": "successful operation"
+          }
+        }
+      }
+    }
+  }
+}