Spring_Boot_Day_2_Recap_Quiz

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Spring Boot Recap Quiz

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Birendra Singh

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Spring_Boot_Day_2_Recap_Quiz


Spring_Boot_Day_2_Recap_QuizOnline version Spring Boot Recap Quiz by Birendra Singh 1 Which of the following is part of Bean Validation API? a @Autowired b @NotNull c @Bean d @Configuration 2 @PostMapping("/save") public ResponseEntity saveUser(@RequestBody @Valid User user) { return ResponseEntity.ok("Saved"); } What does @Valid do here? a Converts JSON to Object b Validates fields of User c Saves object in DB d Handles exception 3 public ResponseEntity saveUser(@RequestBody User user) {} Why validation is not triggered? a Missing @Controller b Missing @Valid c Missing @Autowired d Missing @Service 4 Which object stores validation errors? a Exception b BindingResult / Errors c Model d ResponseEntity 5 @PostMapping("/save") public String save(@Valid User user, Errors errors) { if(errors.hasErrors()) { return "error"; } return "success"; } What is errors.hasErrors() checking? a DB errors b Validation errors c Runtime errors d HTTP errors 6 Which strategy uses file extension like .json? a Accept Header b URL Parameter c Path Extension d Cookie Strategy 7 http://localhost:8080/users?format=xml Which strategy is used? a Accept Header b Path Extension c URL Parameter d Default 8 Which class is used for message resolution? a ResourceBundleMessageSource b MessageSource c LocaleResolver d All of the above 9 Which bean integrates validation with messages? a LocalValidatorFactoryBean b ValidatorBean c RestTemplate d DispatcherServlet 10 What does @ControllerAdvice do? a Handles DB operations b Global exception handling c Configures security d Maps URLsMaps URLs 11 @PostMapping("/save") public ResponseEntity save(@Valid @RequestBody User user, Errors errors) { if(errors.hasErrors()) { return ResponseEntity.ok(errors.getAllErrors()); } return ResponseEntity.ok("Saved"); } What is the issue? a Errors cannot be used with @RequestBody b Validation won’t work c Should use BindingResult instead of Errors d No issue 12 Which is required for creating custom validator? a Implement ConstraintValidator b Create annotation with @Constraint c Define validator class d All of the above 13 Given: spring.mvc.contentnegotiation.favor-path-extension=true spring.mvc.contentnegotiation.favor-parameter=true Which has higher priority? a Accept Header b URL Parameter c Path Extension d All equal 14 @Bean public MessageSource messageSource() { ResourceBundleMessageSource ms = new ResourceBundleMessageSource(); ms.setBasename("messages"); return ms; } Where should messages.properties be placed? Written answer 15 Which connects validation messages to messageSource? a LocalValidatorFactoryBean b ValidatorFactory c ResourceBundle d @ControllerAdvice 16 @ControllerAdvice public class GlobalHandler { @ExceptionHandler(Exception.class) public String handle() { return "error"; } } What is the scope? a Only one controller b All controllers c Only REST controllers d Only services 17 What does naming strategy control? a Table naming b Column naming c Case conversion d All of the above

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Spring_Boot_Day_2_Recap_Quiz

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Spring_Boot_Day_2_Recap_QuizOnline version

by Birendra Singh

Which of the following is part of Bean Validation API?

@PostMapping("/save") public ResponseEntity saveUser(@RequestBody @Valid User user) { return ResponseEntity.ok("Saved"); } What does @Valid do here?

public ResponseEntity saveUser(@RequestBody User user) {} Why validation is not triggered?

Which object stores validation errors?

@PostMapping("/save") public String save(@Valid User user, Errors errors) { if(errors.hasErrors()) { return "error"; } return "success"; } What is errors.hasErrors() checking?

Which strategy uses file extension like .json?

http://localhost:8080/users?format=xml Which strategy is used?

Which class is used for message resolution?

Which bean integrates validation with messages?

What does @ControllerAdvice do?

@PostMapping("/save") public ResponseEntity save(@Valid @RequestBody User user, Errors errors) { if(errors.hasErrors()) { return ResponseEntity.ok(errors.getAllErrors()); } return ResponseEntity.ok("Saved"); } What is the issue?

Which is required for creating custom validator?

Given: spring.mvc.contentnegotiation.favor-path-extension=true spring.mvc.contentnegotiation.favor-parameter=true Which has higher priority?

@Bean public MessageSource messageSource() { ResourceBundleMessageSource ms = new ResourceBundleMessageSource(); ms.setBasename("messages"); return ms; } Where should messages.properties be placed?

Written answer

Which connects validation messages to messageSource?

@ControllerAdvice public class GlobalHandler { @ExceptionHandler(Exception.class) public String handle() { return "error"; } } What is the scope?

What does naming strategy control?