Merge pull request #1826 from swagger-api/issue-1825

added serverPort detection from the spec

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/NodeJSServerCodegen.java

@@ -245,6 +245,23 @@ public class NodeJSServerCodegen extends DefaultCodegen implements CodegenConfig
     }
 
     @Override
+    public void preprocessSwagger(Swagger swagger) {
+        if ("/".equals(swagger.getBasePath())) {
+            swagger.setBasePath("");
+        }
+
+        String host = swagger.getHost();
+        String port = "8080";
+        if (host != null) {
+            String[] parts = host.split(":");
+            if (parts.length > 1) {
+                port = parts[1];
+            }
+        }
+        this.additionalProperties.put("serverPort", port);
+    }
+
+        @Override
     public Map<String, Object> postProcessSupportingFileData(Map<String, Object> objs) {
         Swagger swagger = (Swagger)objs.get("swagger");
         if(swagger != null) {

modules/swagger-codegen/src/main/resources/nodejs/README.mustache

@@ -18,7 +18,7 @@ node .
 To view the Swagger UI interface:
 
 ```
-open http://localhost:8080/docs
+open http://localhost:{{serverPort}}/docs
 ```
 
 This project leverages the mega-awesome [swagger-tools](https://github.com/apigee-127/swagger-tools) middleware which does most all the work.