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Spring：RESTFUL Webサービスのファイルアップロード

Spring 4.0を使用してRESTFUL WebサービスのPOCを作成しています。 Stringまたは他の基本的なデータ型のみを渡すと、問題なく動作します。

@RequestMapping(value="/upload/file", method=RequestMapping.post)
public String uploadFile(@RequestParam("fileName", required=false) String fileName){
    logger.info("initialization of object");
    //----------------------------------------

     System.out.Println("name of File : " + fileName);  

    //----------------------------------------
}

これは正常に機能します。しかし、バイトストリームまたはファイルオブジェクトを関数に渡したい場合、これらのパラメーターを持つこの関数を作成するにはどうすればよいですか？また、バイトストリームを渡す機能を備えたクライアントを作成するにはどうすればよいですか？

@RequestMapping(value="/upload/file", method=RequestMapping.post)
public String uploadFile(@RequestParam("file", required=false) byte [] fileName){
     //---------------------
     // 
}

このコードを試しましたが、415エラーが発生しました。

@RequestMapping(value = "/upload/file", method = RequestMethod.POST, consumes="multipart/form-data")
public @ResponseBody String uploadFileContentFromBytes(@RequestBody MultipartFormDataInput input,  Model model) {
    logger.info("Get Content. "); 
  //------------
   }

クライアントコード-Apache HttpClientの使用

private static void executeClient() {
    HttpClient client = new DefaultHttpClient();
    HttpPost postReqeust = new HttpPost(SERVER_URI + "/file");

    try{
        // Set Various Attributes
        MultipartEntity multipartEntity = new MultipartEntity();
        multipartEntity.addPart("fileType" , new StringBody("DOCX"));

        FileBody fileBody = new FileBody(new File("D:\\demo.docx"), "application/octect-stream");
        // prepare payload
        multipartEntity.addPart("attachment", fileBody);

        //Set to request body
        postReqeust.setEntity(multipartEntity);

        HttpResponse response = client.execute(postReqeust) ;

        //Verify response if any
        if (response != null)
        {
            System.out.println(response.getStatusLine().getStatusCode());
        }

    }
    catch(Exception ex){
        ex.printStackTrace();
    }
javaweb-servicesrestspring-mvc
18
Ronnie

以下のように休憩サービスを作成できます。

@RequestMapping(value="/upload", method=RequestMethod.POST)
    public @ResponseBody String handleFileUpload( 
            @RequestParam("file") MultipartFile file){
            String name = "test11";
        if (!file.isEmpty()) {
            try {
                byte[] bytes = file.getBytes();
                BufferedOutputStream stream = 
                        new BufferedOutputStream(new FileOutputStream(new File(name + "-uploaded")));
                stream.write(bytes);
                stream.close();
                return "You successfully uploaded " + name + " into " + name + "-uploaded !";
            } catch (Exception e) {
                return "You failed to upload " + name + " => " + e.getMessage();
            }
        } else {
            return "You failed to upload " + name + " because the file was empty.";
        }
    }

そして、クライアント側では以下のようにします。

import Java.io.File;
import org.Apache.http.HttpEntity;
import org.Apache.http.HttpResponse;
import org.Apache.http.HttpVersion;
import org.Apache.http.client.HttpClient;
import org.Apache.http.client.methods.HttpPost;
import org.Apache.http.entity.mime.MultipartEntity;
import org.Apache.http.entity.mime.content.ContentBody;
import org.Apache.http.entity.mime.content.FileBody;
import org.Apache.http.impl.client.DefaultHttpClient;
import org.Apache.http.params.CoreProtocolPNames;
import org.Apache.http.util.EntityUtils;


public class Test {
  public static void main(String[] args) throws Exception {
    HttpClient httpclient = new DefaultHttpClient();
    httpclient.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);

    HttpPost httppost = new HttpPost("http://localhost:8080/upload");
    File file = new File("C:\\Users\\Kamal\\Desktop\\PDFServlet1.pdf");

    MultipartEntity mpEntity = new MultipartEntity();
    ContentBody cbFile = new FileBody(file, "multipart/form-data");
    mpEntity.addPart("file", cbFile);


    httppost.setEntity(mpEntity);
    System.out.println("executing request " + httppost.getRequestLine());
    HttpResponse response = httpclient.execute(httppost);
    HttpEntity resEntity = response.getEntity();

    System.out.println(response.getStatusLine());
    if (resEntity != null) {
      System.out.println(EntityUtils.toString(resEntity));
    }
    if (resEntity != null) {
      resEntity.consumeContent();
    }

    httpclient.getConnectionManager().shutdown();
  }
}
31
RE350
<bean id="multipartResolver"
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
</bean>

このコードが必要

2
user5497138