Question

My RestPictureServices Class

@Service
@TestProfile
public class RestPictureServices implements SahaPictureServices {

    @Autowired
    private PictureRepository pictureRepository;

    @Autowired
    private DozerBeanMapper mapper;

    @Override
    public Collection<SahaPicture> pictures() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public SahaPicture pictureOfSaha(Long sahaId) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public SahaPicture save(SahaPicture picture) {

        SahaPictureEntity pictureEntity=new SahaPictureEntity();
        mapper.map(picture, pictureEntity);
        pictureRepository.save(pictureEntity);
        SahaPicture savedPicture=new SahaPicture();
        mapper.map(pictureEntity, savedPicture);

        return  savedPicture;
    }

    @Override
    public Boolean delete(Long id) {
        // TODO Auto-generated method stub
        return true;
    }

    @Override
    public SahaPicture update(Long id, SahaPicture picture) {
        // TODO Auto-generated method stub
        return null;
    }

}

My SahaPictureController class

@JsonRestController
@RequestMapping(path = "/saha/picture")
public class PictureController {

    @Autowired
    @Qualifier("restPictureServices")
    private SahaPictureServices pictureServices;


    @RequestMapping(method = RequestMethod.POST)
    public  SahaPicture singleSave(@RequestBody SahaPicture picture) {
        return pictureServices.save(picture);
    }

}

My PictureSahaRepository interface

 public interface PictureRepository extends CrudRepository<SahaPictureEntity,Long>  {

    }

    My picture Model class

public class SahaPicture {

    private MultipartFile file;
    //getter and setter methods   
}




    This is SahaPictureEntity class

@Entity
@Table(name="SahaPicture")

public class SahaPictureEntity {

    @Id
    @GeneratedValue
    private Long id;


    @Column
    @Lob
    private MultipartFile file;

    //getter and setter methods 

}
My JsonRestController Annotation

@RestController
@RequestMapping(produces = MediaType.APPLICATION_JSON_VALUE)
@Retention(RetentionPolicy.RUNTIME)
public @interface JsonRestController {
}

My Services Interface
public interface SahaPictureServices {


    Collection<SahaPicture> pictures();
    SahaPicture pictureOfSaha(Long sahaId);
    SahaPicture save(SahaPicture picture);
    Boolean delete(Long id);
    SahaPicture update(Long id, SahaPicture picture);
}

My Service Configuration Class using dozer mapping jar.
@Configuration
public class ServiceConfiguration {

    @Bean
    public DozerBeanMapper mapper() {
        return new DozerBeanMapper();
    }
}

如何使用其他完整服务Spring boot将文件或映像插入到db。我正在尝试restfull服务插入文件，但我有一个错误

无法读取HTTP消息：org.springframework.http.converter.HttpMessageNotReadableException：无法读取文档：数字值中的意外字符（＆＃39; - ＆＃39;（代码45））：预期数字（0- 9）跟随减号，表示有效数值在[来源：java.io.PushbackInputStream@21d5ad7d; line：1，column：3];嵌套异常是com.fasterxml.jackson.core.JsonParseException：数字值中的意外字符（＆＃39; - ＆＃39;（代码45））：跟随减号的预期数字（0-9），表示有效数值在[来源：java.io.PushbackInputStream@21d5ad7d; line：1，column：3]

请求和响应如下图所示。

enter image description here

Answer 1

您需要创建一个包含MultipartFile参数的REST方法。该对象具有getBytes（）方法以及可用于获取数据的getInputStream（）方法。然后，您可以创建对象并将其保存到存储库中。

请参阅https://spring.io/guides/gs/uploading-files/和http://www.concretepage.com/spring-4/spring-4-mvc-single-multiple-file-upload-example-with-tomcat作为如何使用Spring上传文件的良好参考。

以下是使用jQuery将文件上传到REST服务的前端示例。

        var token = $("meta[name='_csrf']").attr("content");
        var header = $("meta[name='_csrf_header']").attr("content");
        $.ajax({
            url: "/restapi/requests/replay/upload",
            type: "POST",
            beforeSend: function (request)
            {
                request.setRequestHeader(header,token);
            },
            data: new FormData($("#upload-file-form")[0]),
            enctype: 'multipart/form-data',
            processData: false,
            contentType: false,
            cache: false,
            success: function () {
                // Handle upload success
                addText( "File uploaded successfully.")
            },
            error: function () {
                // Handle upload error
                addText( "File upload error.")
            }
        });

然后这是Rest控制器的样子：

@RestController
public class ReplayRestController {

@Autowired
private ApplicationContext applicationContext;

@RequestMapping(value="/restapi/requests/replay/upload", method = RequestMethod.POST)
@ResponseBody
public ResponseEntity<?> processUpload(
        @RequestParam("uploadfile") MultipartFile uploadfile,
        @RequestParam("databaseWriteIdUpload") String databaseWriteId,
        @RequestParam("recordsToUse")ReplayUpload.RecordsToUse recordsToUse
) {

    try {
        String fileName = uploadfile.getOriginalFilename();
        if (databaseWriteId == null || "".equals(databaseWriteId)) {
            databaseWriteId = fileName;
        }
        ReplayUpload replayUpload = applicationContext.getBean( ReplayUpload.class );
        replayUpload.process( uploadfile.getInputStream(), databaseWriteId, recordsToUse );
    }
    catch (Exception e) {
        System.out.println(e.getMessage());
        return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
    }

    return new ResponseEntity<>(HttpStatus.OK);    }
}

RestFull服务文件上传

1 个答案: