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removed race condition between different requests

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This commit is contained in:
Simon Massey 2018-10-30 22:47:38 +00:00
parent b09fd15345
commit aedf3b5cb5
1 changed files with 7 additions and 6 deletions
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13
spring-thymeleaf/src/main/java/com/baeldung/thymeleaf/controller/BookController.java
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@ -2,6 +2,7 @@ package com.baeldung.thymeleaf.controller;
import java.util.List; import java.util.List;
import java.util.Optional; import java.util.Optional;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors; import java.util.stream.Collectors;
import java.util.stream.IntStream; import java.util.stream.IntStream;
@ -21,18 +22,18 @@ import com.baeldung.thymeleaf.service.BookService;
@Controller @Controller
public class BookController { public class BookController {
private static int currentPage = 1;
private static int pageSize = 5;
@Autowired @Autowired
private BookService bookService; private BookService bookService;
@RequestMapping(value = "/listBooks", method = RequestMethod.GET) @RequestMapping(value = "/listBooks", method = RequestMethod.GET)
public String listBooks(Model model, @RequestParam("page") Optional<Integer> page, @RequestParam("size") Optional<Integer> size) { public String listBooks(Model model, @RequestParam("page") Optional<Integer> page, @RequestParam("size") Optional<Integer> size) {
page.ifPresent(p -> currentPage = p); AtomicInteger currentPage = new AtomicInteger(1);
size.ifPresent(s -> pageSize = s); AtomicInteger pageSize = new AtomicInteger(5);
page.ifPresent(p -> currentPage.set(p));
size.ifPresent(s -> pageSize.set(s));
Page<Book> bookPage = bookService.findPaginated(PageRequest.of(currentPage - 1, pageSize)); Page<Book> bookPage = bookService.findPaginated(PageRequest.of(currentPage.get() - 1, pageSize.get()));
model.addAttribute("bookPage", bookPage); model.addAttribute("bookPage", bookPage);