Getting error while loading swagger-ui.html in spr

Question

Could not resolve reference because of: Could not resolve pointer: /definitions/Error does not exist in document

I followed this link http://www.baeldung.com/swagger-2-documentation-for-spring-rest-api , but getting above error while I add globalResponseMessage() methhod for custom response message.I can't understand what's the reason. Please help....TIA

 @Bean
public Docket api() {
    return new Docket(DocumentationType.SWAGGER_2)
            .select()
            .apis(RequestHandlerSelectors.any())
            .paths(PathSelectors.any())
            .build()
            .apiInfo(apiInfo())
            .consumes(getContentType())
            .produces(getContentType())
            .useDefaultResponseMessages(false)
            .globalResponseMessage(RequestMethod.GET, newArrayList(
                    new ResponseMessageBuilder()
                            .code(500).message("500 message")
                            .responseModel(new ModelRef("Error")).build(),
                    new ResponseMessageBuilder()
                            .code(403)
                            .message("Forbidden!!!!!")
                            .build()));
}

Answer 1

You have two alternatives:

1) Replace "Error" with "string" (lower case).

new ResponseMessageBuilder()
                        .code(500).message("500 message")
                        .responseModel(new ModelRef("string")).build(),

2) Replace "Error" with the name of the class you use for error information in the response body (or define an Error class for that). Example:

new ResponseMessageBuilder()
                        .code(500).message("500 message")
                        .responseModel(new ModelRef("ErrorInfo")).build(),

In this example, class ErrorInfo should be in the classpath of your web application (could be in a lib shared by several web apps). Example:

@XmlRootElement
public class ErrorInfo {

    private String url;

    @ApiModelProperty(notes = "HTTP Status Code")
    private int statusCode;

    @ApiModelProperty(notes = "HTTP Reason Phrase")
    private String reasonPhrase;

    @ApiModelProperty(notes = "Mensage to the user")
    private String message;

    @ApiModelProperty(notes = "Ticket created on IT help desk if applicable", required = false)
    private String helpDeskTicket;

    @ApiModelProperty(notes = "Debug information (e.g., stack trace), not visible if runtime environment is 'production'", required = false)
    private String debugInfo;

    public ErrorInfo() {
        // required by Jackson deserialization.
    }

    // ... other constructors, get/set methods...

}