Question:* Which of the following code samples will get the ServletContext inside an Interceptor?
Answer: • @Autowired
ServletContext context;
Answer: • request.getSession().getServletContext();
Question:* How can an HTTP 404 status code be returned from a Spring MVC Controller?
Answer: • Throwing a ResourceNotFoundException declared with the @ResponseStatus annotation.
Answer: • Having the method accept HttpServletResponse as a parameter, so that setStatus(404) can be called on it.
Question:* Which of the following interfaces can be implemented to interact with a container's management of the bean lifecycle?
Answer: • InitializingBean
Answer: • DisposableBean
Question:* Which of the following can be used to serve static resources while still using DispatchServlet at the site's root?
Answer: • <mvc:resources/>
Answer: • <mvc:default-servlet-handler/>
Question:* Which of the following code samples will correctly return an image in @ResponseBody from a byte[] of image data?
Answer: • @RequestMapping("/photo")
public ResponseEntity<byte[]> testphoto() throws IOException {
InputStream in = servletContext.getResourceAsStream("/images/no_image.jpg");
final HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.IMAGE_PNG);
return new ResponseEntity<byte[]>(IOUtils.toByteArray(in), headers, HttpStatus.CREATED);
}
Answer: • @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);
}
Question:* Which of the following annotations are supported by classes with the @Bean annotation?
Answer: • @PostConstruct
Answer: • @PreDestroy
Question:* Which of the following statements is false?
Answer: • By default, a transaction is only marked for rollback in the case of runtime unchecked exceptions.
Question:* Which of the following statements is true about the HandlerExceptionResolver class?
Answer: • DefaultHandlerExceptionResolver converts standard Spring exceptions and converts them to HTTP Status Codes.
Question:* Which of the following statements is true about method arguments that have an @ModelAttribute annotation?
Answer: • Model attributes have to be explicitly added when using @ModelAttribute.
Question:* Given the following method:
@RequestMapping(method=RequestMethod.GET, value="/fooBar")
public ResponseEntity<String> fooBar2() {
String json = "jsonResponse";
HttpHeaders responseHeaders = new HttpHeaders();
responseHeaders.setContentType(MediaType.APPLICATION_JSON);
return new ResponseEntity<String>(json, responseHeaders, HttpStatus.CREATED);
}
Which of the following statements is correct?
Answer: • It returns a JSON String and sets the mimetype to text/javascript.
Question:* Which of the following classes provides built-in pagination functionality in SpringMVC?
Answer: • PagedListHolder
Question:* 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?
Answer: • The attribute name-value pair will be included in the URL, regardless of the use of @ModelAttribute in the controller.
Question:* Which of the following is true about the use of <context:annotation-config /> in a servlet?
Answer: • <context:annotation-config> activates many different annotations in beans, whether they are defined in XML or through component scanning.
Question:* Which of the following are valid sets of constructor arguments for the ModelAndView class? (Select all correct answers.)
Answer: • String viewName, Map<String,?> model
Question:* Which of the following are possible validation methods for user input in Spring MVC?
Answer: • Annotation validation
Question:* Fill in the blank:
The _______ enables the use of the bean element’s attributes, instead of nested <property/> elements, to describe property values and/or collaborating beans.
Answer: • p-namespace
Question:* Which of the following statements is true about the @RequestMapping annotation?
Answer: • It has a single String parameter.
Question:* Which of the following statements is true for the configuration of the Spring handler adapter(s) in a Spring MVC application context?
Answer: • If at least one request handler adapter is defined the context files, Spring will not create the default adapters.
Question:* 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);
...
}
Answer: • It retrieves the partial path value (after "**") before the @RequestMapping and @PathVariable values have been parsed.
Question:* Which of the following statements is true about the HandlerInterceptor interface?
Answer: • It allows exchanging the request and response objects that are handed down the execution chain.
Question:* Which of the following dependency injection (DI) methodologies are available in Spring MVC?
Answer: • Constructor-based dependency injection
Question:* Which of the following is the default bean scope in Spring MVC?
Answer: • singleton
Question:* True or false: a factory class can hold more than one factory method.
Answer: • True
Question:* Which of the following enables custom qualifier annotation types to be registered even if they are not annotated with Spring’s @Qualifier annotation?
Answer: • CustomAutowireConfigurer
Question:* Which of the following statements is correct?
Answer: • <mvc:resources> declares only DefaultAnnotationHandlerMapping by default.
Question:* Which of the following statements is true about the @RequestParam annotation?
Answer: • It indicates that a method parameter should be bound to a web request parameter.
Question:* Select all authentication methods that are supported by Spring Security by default:
Answer: • Digest Access Authentication
Question:* In an annotation-based Spring MVC controller, which of the following are valid ways to set cache headers for a specific path?
Answer: • Ensuring the instance of "AnnotationMethodHandlerAdapter" does not have the "cacheSeconds" property set, and adding an instance of "WebContentInterceptor".
Question:* What is the difference between the @Repository and the @Controller annotations in Spring?
Answer: • "@Repository" is used as a stereotype for the persistence layer, while "@Controller" is used as a stereotype for the presentation layer.
Question:* Which of the following statements are correct, with respect to using the @PreAuthorize annotation in Spring controller methods?
Answer: • @PreAuthorize works with Spring controller methods.
Question:* Which of the following is not a built-in Spring MVC bean scope?
Answer: • local session
Question:* Fill in the blank: _______ is a class-level annotation indicating that an object is a source of bean definitions.
Answer: • @Configuration
Question:* Regarding the @Resource annotation, which of the following statements is false?
Answer: • If no name attribute is specified, the default name is derived from the field name or setter method.
Question:* 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.
Answer: • factory-class
Question:* Which of the following statements is true about the @ModelAttribute annotation?
Answer: • It can be used to expose reference data to a web view.
Question:* Fill in the blank:
In Spring's XML-based configuration, the _______ attribute of the <property/> element specifies a property or constructor argument as a string representation.
Answer: • name
Question:* Which of the following statements is/are true about autowiring in Spring?
Answer: • Fields are injected after the construction of a bean.
Question:* Regarding dependency resolution, which of the following statements is false?
Answer: • Configuration metadata can only be specified via XML or annotations.
