无法导入org.springframework.data.rest.webmvc.ResourceNotFoundException;

问题描述

我无法导入以下库来将其用于处理某些错误。我一直在互联网上查找有关此问题的信息，但无法成功。是否必须下载特定的.jar？如果是这样，我将不胜感激，不知道该怎么做。我对这个网络和春季的东西很陌生。

代码：

package org.magnum.dataup;

import java.io.IOException;
import java.io.OutputStream;
import java.util.*;
import java.util.concurrent.atomic.AtomicLong;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.magnum.dataup.model.Video;
import org.magnum.dataup.model.VideoStatus;
import org.magnum.dataup.model.VideoStatus.VideoState;
import org.eclipse.jetty.http.HttpStatus;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
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;
import org.springframework.data.rest.webmvc.ResourceNotFoundException;

@Controller
public class VideoController {

  public static final String VIDEO_SVC_PATH = "/video";
  public static final String VIDEO_DATA_PATH = VIDEO_SVC_PATH + "/{id}/data";
  private static final AtomicLong currentId = new AtomicLong(0L);

  private Map<Long,Video> videos = new HashMap<Long,Video>();

  @RequestMapping(value = VIDEO_SVC_PATH,method = RequestMethod.GET)
  public @ResponseBody Collection<Video> getVideoList() {
    return videos.values();
  }

  @RequestMapping(value = VIDEO_DATA_PATH,method = RequestMethod.GET)
  public void getData(@PathVariable("id") long id,HttpServletResponse response)
      throws IOException {
    VideoFileManager videoData = VideoFileManager.get();

    try {
      videoData.copyVideoData(videos.get(id),response.getOutputStream());
    } catch (Exception e) {
      throw new ResourceNotFoundException();
    }
  }

  @RequestMapping(value = VIDEO_SVC_PATH,method = RequestMethod.POST)
  public @ResponseBody Video addVideoMetadata(@RequestBody Video v,HttpServletRequest request)
      throws IOException {
    v.setId(currentId.incrementAndGet());
    v.setDataUrl(getUrlBaseForLocalServer(request) + "/" + VIDEO_SVC_PATH + v.getId() + "/data");
    videos.put(v.getId(),v);
    return v;
  }

  @RequestMapping(value = VIDEO_DATA_PATH,method = RequestMethod.POST)
  public @ResponseBody VideoStatus addVideoData(@PathVariable("id") long id,@RequestParam MultipartFile data) throws IOException {
    VideoFileManager videoData = VideoFileManager.get();
    try {
      videoData.saveVideoData(videos.get(id),data.getInputStream());
    } catch (Exception e) {
      throw new ResourceNotFoundException();
    }
    return new VideoStatus(VideoState.READY);
  }

  private String getUrlBaseForLocalServer(HttpServletRequest request) {
    String baseURL = "http://" + request.getServerName()
        + ((request.getServerPort() != 80) ? ":" + request.getServerPort() : "");
    return baseURL;
  }

}

导入时的错误消息：

预先感谢

解决方法

您要查找的罐子可以从maven repo here中获得。

如果您使用maven进行依赖管理，只需将其添加到pom.xml

    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-rest-webmvc</artifactId>
        <version>3.3.3.RELEASE</version> 
    </dependency>