自己搭建文件服务器的思路

• 本人没有使用ftp服务，使用的是 java文件上传和tomcat容器虚拟器的方式实现的。

搭建的思路图如下:

具体代码如下:

A.java本地java项目（关键代码）

public class SysOssController {

    private String remoteServer = "http://x.x.x.x:xxxx";
    private String remoteFileUri = "http://http://x.x.x.x:xxxx/uploadservice/uploadService";
     /**
     * 上传文件
     */
    @RequestMapping("/upload")
//   @RequiresPermissions("sys:oss:all")
    public R upload(@RequestParam("file") MultipartFile file, HttpServletRequest request) throws Exception {
        if (file.isEmpty()) {
            throw new RRException("上传文件不能为空");
        }
        String fileName = StringUtils.cleanPath(file.getOriginalFilename());
        String prefix = UUID.randomUUID().toString().replaceAll("-", "");
        String suffix = fileName.substring(fileName.lastIndexOf("."));
        File tempFile = null;

        String url = "";
        //上传到指定的服务器项目
        if(ConstantUtil.UPLOADSWITCH==1){
            try {
                tempFile = File.createTempFile(prefix, suffix);
                if (!file.isEmpty()) {
                    String serverUrl =  remoteFileUri + "/save";
                    RestTemplate restTemplate = new RestTemplate();
                    file.transferTo(tempFile);
                    //构建 HttpEntity
                    HttpHeaders headers = new HttpHeaders();
                    headers.setContentType(MediaType.MULTIPART_FORM_DATA);
                    MultiValueMap<String, Object> body = new LinkedMultiValueMap<>();
                    body.add("file", new FileSystemResource(tempFile));
                    HttpEntity<MultiValueMap<String, Object>> requestEntity = new HttpEntity<>(body, headers);

                    ResponseEntity  re = restTemplate.postForEntity(serverUrl, requestEntity, String.class);
                    if(re.getStatusCode().value()==200){
                        url = re.getBody()+"";
                    }else {
                        url= "";
                    }
                }
            }catch (Exception e){
                e.printStackTrace();
            }finally {
                if (tempFile != null) {
                    tempFile.delete();
                }
            }

        }else if (ConstantUtil.UPLOADSWITCH==2){ //上传到云文件服务器上
            //上传文件
             url = OSSFactory.build().upload(file);
        }
        if(!StringUtils.isEmpty(url)){
            //保存文件信息
            SysOssEntity ossEntity = new SysOssEntity();
            ossEntity.setUrl(url);
            ossEntity.setCreateTime(new Date());
            sysOssService.save(ossEntity);
        }
        R r = new R();
        r.put("url", remoteServer + url);
        r.put("link", url);
        return r;
    }

B 远程服务器上的 文件上传服务项目（关键代码）

@Controller
@CrossOrigin
@RequestMapping("/uploadService")
public class FileUploadController {
@PostMapping("/save")
    @ResponseBody
    public String handleFileUploadSave(@RequestParam("file") MultipartFile file) {
        String filename = "";
        // MultipartFile是对当前上传的文件的封装，当要同时上传多个文件时，可以给定多个MultipartFile参数(数组)
        if (!file.isEmpty()) {
            String type = file.getOriginalFilename().substring(file.getOriginalFilename().indexOf("."));// 取文件格式后缀名
            filename = System.currentTimeMillis() + type;// 取当前时间戳作为文件名
//          String path = "d:/"+filename;// 存放位置
            //String path = request.getSession().getServletContext().getRealPath("/upload/" + filename);// 存放位置
    //      String path = "D:/load/tomcat8.0.53/webapps/upload/images/" + filename;
    //      String path = "D:/upload/images/" + filename;
            String path = "/usr/local/upload/images/" + filename;
            File destFile = new File(path);
            try {
                // FileUtils.copyInputStreamToFile()这个方法里对IO进行了自动操作，不需要额外的再去关闭IO流
                FileUtils.copyInputStreamToFile(file.getInputStream(), destFile);// 复制临时文件到指定目录下
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return    "/upload/images/" + filename;
    }
}

c 远程服务器保存的目录

/usr/local/upload/images

d 远程服务器上的web服务器tomcat的虚拟目录的配置

conf/server.xml

<Context docBase="/usr/local/upload/images" path="/upload/images" reloadable="true"/>
 </Host>

e数据库的保存文件目录url如下（存的是相对路径，显示的时候在后台a项目上拼上远程tomcat服务地址）:

a项目返回给浏览器回显url时候，只显示文件名（如果想显示全路径可以不做处理）

<Form-item label="照片" prop="picUrl">
                        <i-hidden v-model="lwHomePicture.url" placeholder="请上传宽1200像素,高60像素的图片" readonly/>
                        <i-input v-model="picUrl" placeholder="请上传宽1200像素,高60像素的图片" readonly/>
                    </Form-item>

let vm = new Vue({
  el: '#rrapp',
  data: {
     picUrl:""
     },
     methods:{
       getInfo: function(id){
              Ajax.request({
                  url: "../lwhomepicture/info/"+id,
                  async: true,
                  successCallback: function (r) {
                      vm.lwHomePicture = r.lwHomePicture;
                      var url = vm.lwHomePicture.url;
                      if(url)vm.picUrl = url.substring((url.lastIndexOf("\/") + 1), url.length);
  
                  }
              });
      },
    handleSuccess: function (res, file) {
              vm.lwHomePicture.url = file.response.url;
              var url = file.response.url;
              if(url)vm.picUrl = url.substring((url.lastIndexOf("\/") + 1), url.length);
          },
     }