UpWork (oDesk) & Elance Spring MVC Test Question & Answers

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Ques : In an annotation-based Spring MVC controller, which of the following are valid ways to set cache headers for a specific path?
Ans  :  Ensuring the instance of "AnnotationMethodHandlerAdapter" does not have the    "cacheSeconds" property set, and adding an instance of "WebContentInterceptor".
       Adding "final HttpServletResponse response" as a parameter, then setting the header "Cache-Control" to "all-cache".
       Using a Handler Interceptor and using the "postHandle" method provided by it.

Ques : Which of the following are valid sets of constructor arguments for the ModelAndView class? (Select all correct answers.)
Ans  :  String viewName
        String viewName, Map model

Ques :  Which of the following are possible validation methods for user input in Spring MVC?
Ans  :  Annotation validation
        Programmatic validation

Ques : Which of the following code samples will get the ServletContext inside an Interceptor?
Ans  : @Autowired ServletContext context;
       request.getSession().getServletContext();

Ques : Which of the following dependency injection (DI) methodologies are available in Spring MVC?
Ans  : Constructor-based dependency injection
       Setter-based dependency injection

Ques : Which of the following interfaces can be implemented to interact with a container's management of the bean lifecycle?
Ans  : InitializingBean
       DisposableBean

Ques : Select all authentication methods that are supported by Spring Security by default:
Ans  : Basic Authentication
       Digest Access Authentication

Ques : True or false: a factory class can hold more than one factory method.
Ans  : True

Ques : Regarding the @Resource annotation, which of the following statements is false?
Ans  :  If no name attribute is specified, the default name is derived from the field name or setter method.

Ques : Which of the following  statements is true about method arguments that have an @ModelAttribute annotation?
Ans  :  Model attributes have to be explicitly added when using @ModelAttribute.

Ques : What does the following code do?

@RequestMapping("/{id}/**")
public void foo(@PathVariable("id") int id, HttpServletRequest request) {
    String restOfTheUrl = (String) request.getAttribute(
        HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE);
    ...
}
Ans  :  It retrieves the partial path value (after "**") before the @RequestMapping and @PathVariable values have been parsed.

Ques : Which of the following can be used to serve static resources while still using DispatchServlet at the site's root?
Ans  :

Ques : What is the difference between the @Repository and the @Controller annotations in Spring?
Ans  : "@Repository" is used as a stereotype for the persistence layer, while "@Controller" is used as a stereotype for the presentation layer.

Ques : Which of the following annotations are supported by classes with the @Bean annotation?
Ans  :  @PostConstruct

Ques : Which of the following statements is false?
Ans  : By default, a transaction is only marked for rollback in the case of runtime unchecked exceptions.

Ques :  Which of the following statements is true about the HandlerExceptionResolver class?
Ans  : DefaultHandlerExceptionResolver converts standard Spring exceptions and converts them to HTTP Status Codes.

Ques : Given the following method:

@RequestMapping(method=RequestMethod.GET, value="/fooBar")
    public ResponseEntity fooBar2() {
      String json = "jsonResponse";
      HttpHeaders responseHeaders = new HttpHeaders();
      responseHeaders.setContentType(MediaType.APPLICATION_JSON);
      return new ResponseEntity(json, responseHeaders, HttpStatus.CREATED);
    }

Which of the following statements is correct?
Ans  : It returns a JSON String and sets the mimetype to text/javascript.

Ques : Which of the following classes provides built-in pagination functionality in SpringMVC?
Ans  : PagedListHolder

Ques : Given the method below:

@RequestMapping(value = "/foo", method = RequestMethod.GET)
public final String foo(HttpServletRequest request, BindingResult bindResult, ModelMap model) {
    model.addAttribute("abc", 123);
    return "foo";
}

When the view is displayed in the browser, it's URL is "http://mydomain/foo?abc=123".

Which of the following statements is true?
Ans  : The attribute name-value pair will be included in the URL, regardless of the use of @ModelAttribute in the controller.

Ques : Which of the following is true about the use of in a servlet?
Ans  :   activates many different annotations in beans, whether they are defined in XML or through component scanning.

Ques : Fill in the blank:
The _______ enables the use of the bean element’s attributes, instead of nested elements, to describe property values and/or collaborating beans.
Ans  : p-namespace

Ques : Which of the following statements is true about the @RequestMapping annotation?
Ans  : It supports ant-style paths.

Ques : Which of the following statements is true for the configuration of the Spring handler adapter(s) in a Spring MVC application context?
Ans  : If at least one request handler adapter is defined the context files, Spring will not create the default adapters.

Ques : Which of the following statements is true about the HandlerInterceptor interface?
Ans  : It allows exchanging the request and response objects that are handed down the execution chain.

Ques : How can an HTTP 404 status code be returned from a Spring MVC Controller?
Ans  : Having the method accept HttpServletResponse as a parameter, so that setStatus(404) can be called on it.

Ques : Which of the following is the default bean scope in Spring MVC?
Ans  : singleton

Ques : Which of the following enables custom qualifier annotation types to be registered even if they are not annotated with Spring’s @Qualifier annotation?
Ans  : CustomAutowireConfigurer

Ques : Which of the following statements is correct?
Ans  : doesn't declare its own handler mapping

Ques : Which of the following statements is true about the @RequestParam annotation?
Ans  : It indicates that a method parameter should be bound to a web request parameter.

Ques : Which of the following code samples will correctly return an image in @ResponseBody from a byte[] of image data?
Ans  : @ResponseBody @RequestMapping("/photo", method = RequestMethod.GET, produces = MediaType.IMAGE_JPEG_VALUE) public byte[] testphoto() throws IOException { InputStream in = servletContext.getResourceAsStream("/images/no_image.jpg"); return IOUtils.toByteArray(in); }

Ques : Which of the following statements are correct, with respect to using the @PreAuthorize annotation in Spring controller methods?
Ans  : @PreAuthorize works with Spring controller methods.

Ques : Which of the following is not a built-in Spring MVC bean scope?
Ans  : local session

Ques : Fill in the blank: _______ is a class-level annotation indicating that an object is a source of bean definitions.
Ans  : @Configuration

Ques : Fill in the blank:
When defining a bean that is created with a static factory method, the ______ attribute is used to specify the class containing the static factory method.
Ans  : class

Ques : Which of the following statements is true about the @ModelAttribute annotation?
Ans  : It can be used to expose reference data to a web view.

Ques : Fill in the blank:
In Spring's XML-based configuration, the _______ attribute of the element specifies a property or constructor argument as a string representation.
Ans  : name

Ques : Which of the following statements is/are true about autowiring in Spring?
Ans  : Fields are injected after the construction of a bean.

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