spring-mvc - 带下划线的 Spring 引导路径变量不调用 Controller

Question

您好，我正在使用 spring boot 1.3.4。在我的 Controller 中，我有以下请求映射，

@RequestMapping(value = "name/{name}",method = RequestMethod.GET)
public ResponseEntity<Book> getBooksByName(@Valid @PathVariable("name") String name) {
    final Book h = mongoService.findByBookName(name);

Application.yml

server:
port: 8170
contextPath: /book-repository
spring:
    application:
        name: book-repository
    devtools:
        restart:
            exclude: META-INF/maven/**
            additional-paths: src/main/resources/
bookRepository:
    mongodb:
        connectionStrings:
            bookRepository: mongodb://localhost:27017/contentdb
springfox.documentation.swagger.v2.path: /api/v1
management.add-application-context-header: false

BookRepositoryMain.java

@SpringBootApplication
public class BookRepositoryMain {

public static final Logger LOG = LoggerFactory.getLogger(BookRepositoryMain.class);

public static void main(String[] args) {
    LOG.info("Initialising ...");
    SpringApplication.run(BookRepositoryMain.class, args);
}

BookController.java

@Api(value = "books", description = "books endpoint", tags = {"books"}, produces = MediaType.APPLICATION_JSON_VALUE)
@RestController
@RequestMapping(value = PATH, produces = MediaType.APPLICATION_JSON_VALUE)
public class BooksController {
public static final Logger LOG = LoggerFactory.getLogger(BooksController.class);
public static final String PATH = "/books";

@RequestMapping(
        value = "name/{name}",
        method = RequestMethod.GET)
@ApiOperation(
        response = Book.class,
        notes = "",
        value = "Finds Book by its name.")
@ApiResponses({
    @ApiResponse(code = 404, response = ErrorMessage.class, message = "Book not found.")
})
public ResponseEntity<Book> getBookByName(@PathVariable("name") String uid) throws ContentNotFoundException {
    final Book h = deviceMongoService.findByBookName(name);
    if (h == null) {
        throw new BookNotFoundException(String.format("Could not find book with name %s", name));
    }
    final ResponseEntity<Book> response = ResponseEntity.ok().body(h);
    return response;
}

如果 URL 是 "api/v1/books/name/sherlock_homes" 那么上面的方法不工作但是 URL 是 "api/v1/books/name/sherlockHomes" 然后它工作正常。

可能是什么问题？为什么 spring 不允许在路径变量中使用下划线？

您的帮助应该是可观的。

Answer 1

您可以在@RequestMapping 值中使用正则表达式。例如你可以尝试:

@RequestMapping(value = "name/{name:.+}",method = RequestMethod.GET)

这记录在 spring docs 中也可以在这个 similar question 中找到