java 有没有办法在不使用Spring-MVC的情况下编写一个rest控制器来使用spring-data-rest上传文件？
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Is there a way to write a rest controller to upload file using spring-data-rest without using Spring-MVC?
提问by Manish
I have created repository like given code
我已经像给定的代码一样创建了存储库
@RepositoryRestResource(collectionResourceRel = "sample", path = "/sample" )
public interface SampleRepository extends PagingAndSortingRepository<Sample, Long> {
}
works fine for allcrud operations.
适用于 allcrud 操作。
But I wanted to create a rest repository which upload file, How i would do that with spring-data-rest?
但是我想创建一个上传文件的休息存储库，我将如何使用 spring-data-rest 来做到这一点？
回答by Francesco Pitzalis
Spring Data Rest simply exposes your Spring Data repositories as REST services. The supported media types are application/hal+jsonand application/json.
Spring Data Rest 只是将您的 Spring Data 存储库公开为 REST 服务。支持的媒体类型是application/hal+json和application/json。
The customizations you can do to Spring Data Rest are listed here: Customizing Spring Data REST.
此处列出了您可以对 Spring Data Rest 进行的自定义：Customizing Spring Data REST。
If you want to perform any other operation you need to write a separate controller (following example from Uploading Files):
如果您想执行任何其他操作，您需要编写一个单独的控制器（以下示例来自Uploading Files）：
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
@Controller
public class FileUploadController {
@RequestMapping(value="/upload", method=RequestMethod.GET)
public @ResponseBody String provideUploadInfo() {
return "You can upload a file by posting to this same URL.";
}
@RequestMapping(value="/upload", method=RequestMethod.POST)
public @ResponseBody String handleFileUpload(@RequestParam("name") String name,
@RequestParam("file") MultipartFile file){
if (!file.isEmpty()) {
try {
byte[] bytes = file.getBytes();
BufferedOutputStream stream =
new BufferedOutputStream(new FileOutputStream(new File(name)));
stream.write(bytes);
stream.close();
return "You successfully uploaded " + name + "!";
} catch (Exception e) {
return "You failed to upload " + name + " => " + e.getMessage();
}
} else {
return "You failed to upload " + name + " because the file was empty.";
}
}
}
回答by Ravindra Kumar
Yes you can try this:
是的，你可以试试这个：
@RestController
@EnableAutoConfiguration
@RequestMapping(value = "/file-management")
@Api(value = "/file-management", description = "Services for file management.")
public class FileUploadController {
private static final Logger LOGGER = LoggerFactory
.getLogger(FileUploadController.class);
@Autowired
private StorageService storageService; //custom class to handle upload.
@RequestMapping(method = RequestMethod.POST, headers = ("content- type=multipart/*"), produces = "application/json", consumes = MediaType.APPLICATION_FORM_URLENCODED_VALUE)
@ResponseBody
@ResponseStatus(value = HttpStatus.CREATED)
public void handleFileUpload(
@RequestPart(required = true) MultipartFile file) {
storageService.store(file); //your service to hadle upload.
}
}
