Spring将@PathVariable绑定到JavaBean

Question

我尝试在 Spring 控制器中绑定一个对象，以便它可以用作@PathVariable。我想这样做，因为我想传递一些@PathVariable。我已经尝试过Bind Path variables to a custom model object in spring 和Is it possible to bind path variable and request param into a single object? 的解决方案。但两者都不起作用。

我在我的控制器中创建了类似的东西。

@RestController
@RequestMapping("/buildings")
@RequiredArgsConstructor
public class BuildingController {

    private final BuildingService buildingService;

    @GetMapping("/{buildingId}/floors/{floorId}/rooms/{roomId}/sections")
    public Flux<SectionDTO> getRoomSections(BuildingRequestBean request) {
        return this.buildingService.getRoomSections(request);
    }
}

和BuildingRequestBean.java 这样

@Getter
@Setter
public class BuildingRequestBean {

  private String buildingId;

  private String floorId;

  private String roomId;
}

当我检查BuildingRequestBean 时，当我用GET localhost:8080/buildings/a/floors/b/rooms/c/sections 调用它时，属性为空。 但是，如果我将其称为@RequestParam，它不会为空，类似于GET localhost:8080/buildings/{buildingId}/floors/{floorId}/rooms/{roomId}/sections?buildingId=a&floorId=b&roomId=c

如何修复它，使其表现得像 @PathVariable 而不是像 @RequestParam？

Answer 1

必须在函数参数中添加PathVariable

试试这个：

@GetMapping("/{buildingId}/floors/{floorId}/rooms/{roomId}/sections")
public Flux<SectionDTO> getRoomSections(@PathVariable String buildingId,@PathVariable String floorId ,@PathVariable String roomId) {

Answer 2

你可以通过@ModelAttribute获取它

试试这个：

@GetMapping("/{buildingId}/floors/{floorId}/rooms/{roomId}/sections")
    public Flux<SectionDTO> getRoomSections(@ModelAttribute BuildingRequestBean request) {
        return this.buildingService.getRoomSections(request);
    }