We are working on a Spring Boot web application, and the database we are using is MySQL; the setup we have is we first test it locally (means we need to install MySQL on our PC); then we push to Bitbucket; Jenkins automatically detects the new push to Bitbucket and does a build on it … Read more
I want to make my RESTful API very predictable. What is the best practice for deciding when to make a segmentation of data using the URI rather than by using query params. It makes sense to me that system parameters that support pagination, sorting, and grouping be after the ‘?’ But what about fields like … Read more
I am using Spring MVC and this is my method: /** * Upload single file using Spring Controller. */ @RequestMapping(value = “/uploadFile”, method = RequestMethod.POST) public @ResponseBody ResponseEntity<GenericResponseVO<? extends IServiceVO>> uploadFileHandler( @RequestParam(“name”) String name, @RequestParam(“file”) MultipartFile file, HttpServletRequest request, HttpServletResponse response) { if (!file.isEmpty()) { try { byte[] bytes = file.getBytes(); // Creating the directory … Read more
This is continuation of question Spring MVC @PathVariable getting truncated Spring forum states that it has fixed(3.2 version) as part of ContentNegotiationManager. see the below link. https://jira.springsource.org/browse/SPR-6164 https://jira.springsource.org/browse/SPR-7632 In my application requestParameter with .com is truncated. Could anyone explain me how to use this new feature? how is it configurable at xml? Note: spring forum- … Read more
What is the difference between @RequestParam and @PathVariable while handling special characters? + was accepted by @RequestParam as space. In the case of @PathVariable, + was accepted as +. 8 Answers 8
Difference between spring @Controller and @RestController annotation. Can @Controller annotation be used for both Web MVC and REST applications? If yes, how can we differentiate if it is Web MVC or REST application. 15 Answers 15
What is the purpose and usage of @ModelAttribute in Spring MVC? 13 Answers 13
I have this problem: org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: mvc3.model.Topic.comments, no session or session was closed Here is the model: @Entity @Table(name = “T_TOPIC”) public class Topic { @Id @GeneratedValue(strategy=GenerationType.AUTO) private int id; @ManyToOne @JoinColumn(name=”USER_ID”) private User author; @Enumerated(EnumType.STRING) private Tag topicTag; private String name; private String text; @OneToMany(mappedBy = “topic”, … Read more
I’m using Spring MVC for a simple JSON API, with @ResponseBody based approach like the following. (I already have a service layer producing JSON directly.) @RequestMapping(value = “/matches/{matchId}”, produces = “application/json”) @ResponseBody public String match(@PathVariable String matchId) { String json = matchService.getMatchJson(matchId); if (json == null) { // TODO: how to respond with e.g. 400 … Read more
I’m a little confused as to how the inversion of control (IoC) works in Spring. Say I have a service class called UserServiceImpl that implements UserService interface. How would this be @Autowired? And in my Controllers, how would I instantiate an instance of this service? Would I just do the following? UserService userService = new … Read more
