场景：实际业务中有图片存储在windows电脑上且文件的访问权限只限于windows的共享，微服务是在同一网段的linux上面,前端请求获取文件信息

  • 依赖
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<dependency>
    <groupId>org.samba.jcifs</groupId>
    <artifactId>jcifs</artifactId>
    <version>1.2.19</version>
</dependency>
  • 实际代码
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@GetMapping("getWinFile")
public void getWinFile(HttpServletResponse response,String fileName){
    tscWinFileService.getWinFile(response,fileName);
}
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import jcifs.smb.SmbException;
import jcifs.smb.SmbFile;
import org.springframework.stereotype.Service;
import org.springframework.util.FileCopyUtils;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

@Service
public class TscWinFileService {

    Map<String,SmbFile> smbFileMaps = new HashMap<>();
    Set<String> folderUrls = new HashSet<>();

    public SmbFile init(String ip,String folderUrl) throws IOException {
//        String remoteFileUrl = "smb://"+userName+":"+passWord+"@"+ip+"/"+folderUrl+"/";
        String remoteFileUrl = "smb://"+ip+"/"+folderUrl+"/";
        System.out.println(remoteFileUrl);
        SmbFile remoteFile = new SmbFile(remoteFileUrl);
        remoteFile.connect(); //尝试连接
        smbFileMaps.put("file://"+ip+"/"+folderUrl,remoteFile);
        folderUrls.add(folderUrl);
        return remoteFile;
    }


    /**
     * 获取win共享文件夹文件
     */
    public void getWinFile(HttpServletResponse response,String fileNameExport) {

        Map<String, InputStream> map = new HashMap<>();

//        String ip = "10.245.228.128";
//        String folderName = "test";
//        String userName = "huanggaoxiang";
//        String passWord = "12345678!a";

        String ip1 = "10.245.228.70";
        String folderName1 = "share";

        try {
            SmbFile remoteFile = null;
            String mapKey = "file://"+ip1+"/"+folderName1;
            if(smbFileMaps.containsKey(mapKey)){
                remoteFile = smbFileMaps.get(mapKey);
            }else{
                remoteFile = init(ip1,folderName1);
            }

//            String remoteFileUrl = "smb://"+ip1+"/"+folderName1+"/";
//            String remoteFileUrl = "smb://"+userName+":"+passWord+"@"+ip+"/"+folderName+"/";
//            System.out.println(remoteFileUrl);
//            SmbFile remoteFile = new SmbFile(remoteFileUrl);
//            remoteFile.connect(); //尝试连接

            if (remoteFile.exists()) {
                SmbFile[] files = remoteFile.listFiles();
                for (SmbFile f : files) {
                    if(fileNameExport.equals(f.getName())){
                        if(f.getName().equals(fileNameExport)){
                            FileCopyUtils.copy(f.getInputStream(), response.getOutputStream());
                            response.setHeader("Content-Type", "application/octet-stream");
                        }
                    }else {
                        System.out.println("文件夹文件有："+f.getName());
                        continue;
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
}