java – Spring Hateoas,PathVariable和SaxSerialization

我实际上正在开发一个小应用程序来训练,我在使用 SpringHateoas使用PathVariable时遇到了问题.

事实上,当我使用类似的东西：

@RequestMapping(value = "/directories/{idDirectory}",method = RequestMethod.GET)
    public DirectoryDTO findById(@PathVariable String idDirectory) {
        DirectoryEntity directoryEntity = directoryService.findById(idDirectory);
        DirectoryDTO directoryDto = new DirectoryDTO(directoryEntity);
        directoryDto.add(linkTo(methodOn(DirectoryController.class).findById(idDirectory)).withSelfRel());
        return directoryDto;
    }

我有一个像下面这样的错误：

[com.sun.istack.internal.SAXException2]: unable to marshal type DirectoryDTO
to element because it’s missing an annotation

这是我的DirectoryEntity：

@Document(collection = "directory")
public class DirectoryEntity {

    @Id
    private String id;
    private String name;
    private String path;
    private List<DirectoryEntity> childrenDirectories;
    private DirectoryEntity parentDirectory;
    private List<FileEntity> fileEntities;

/* Get/set omitted */
}

和DTO：

public class DirectoryDTO extends Resource<DirectoryEntity> {


    public DirectoryDTO(DirectoryEntity content,Link... links) {
        super(content,links);
    }

    public DirectoryDTO(DirectoryEntity content,Iterable<Link> links) {
        super(content,links);
    }
}

我究竟做错了什么 ？

解决方法

（编辑：安卓应用网）

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