如何进行过滤映射

Question

我正在使用 spring 引导，我正在尝试使用作者、标题、描述和出版日期来过滤图书列表，但是我无法以正确的方式进行映射： enter image description here

我对此很陌生，你能纠正我吗？这是我控制器中的映射部分：

/*
@GetMapping(value = "/filter", produces = MediaType.APPLICATION_JSON_VALUE)
public List<Book> filterBooks(@RequestParam(name = "author", required = true) String author,
                              @RequestParam(name = "title", required = true) String title,
                              @RequestParam(name = "description", required = true) String desc,
                              @RequestParam(name = "publishedDate", required = true) String publishedDate) {
    return bookService.filterBooks(author, title, desc, publishedDate);
}*/

@GetMapping(value = "/filter", produces = MediaType.APPLICATION_JSON_VALUE)
public String filterBooks (Model model) {
    public List<Book> filterBooks (@RequestParam(name = "author", required = true) String author,
            @RequestParam(name = "title", required = true) String title,
            @RequestParam(name = "description", required = true) String desc,
            @RequestParam(name = "publishedDate", required = true) String publishedDate){
        model.addAttribute("filterBooks", filterBooks);
        // return bookService.filterBooks(author, title, desc, publishedDate);
        return"filter";
    }
}

这是我的 filter.html 文件：https://pastebin.com/87rFZj9Z

这里是图书服务实现文件中的过滤函数：

    public List<Book> filterBooks(String author, String title, String description, String publishedDate) {
    List<Book> filteredBooks = new ArrayList<>();
    if (!CollectionUtils.isEmpty(books)) {
        filteredBooks.addAll(books.stream()
                .filter(book -> filterByAuthor(book, author) && filterByTitle(book, title)
                        && filterByDesc(book, description) && filterByPublishDate(book, publishedDate))
                .collect(Collectors.toList()));
    }
    return filteredBooks;
}

private boolean filterByAuthor(Book book, String author) {
    return StringUtils.isEmpty(author) ? Boolean.TRUE : book.getAuthor().equalsIgnoreCase(author);
}

private boolean filterByTitle(Book book, String title) {
    return StringUtils.isEmpty(title) ? Boolean.TRUE : book.getTitle().equalsIgnoreCase(title);
}

private boolean filterByDesc(Book book, String description) {
    return StringUtils.isEmpty(description) ? Boolean.TRUE : book.getDescription().equalsIgnoreCase(description);
}

private boolean filterByPublishDate(Book book, String publishDate) {
    return StringUtils.isEmpty(publishDate) ? Boolean.TRUE : book.getPublish_date().equalsIgnoreCase(publishDate);
}

Answer 1

Hi 示例代码块 RestController Spring boot

  @RestController
  @RequestMapping("/example")
  public class BooksController {

  @GetMapping(value = "/filter", produces = MediaType.APPLICATION_JSON_VALUE)
 public String filterBooks (@ModelAtribute("model") Model model , @RequestParam(name = "author", required = true) String 
        author,
        @RequestParam(name = "title", required = true) String title,
        @RequestParam(name = "description", required = true) String description,
        @RequestParam(name = "publishedDate", required = true) String publishedDate){
    model.addAttribute("filterBooks", filterBooks);
    // return bookService.filterBooks(author, title, description, publishedDate);
    return"filter";
    }
 }

如何进行过滤映射

How to do the mapping for filtering

html

mapping

spring-boot