使用Jsoup发送请求上传和下载文件

场景是自己的web端需要上传文件到别人的接口上，

我自己的页面上传文件到后台就不需要说什么了，关键是要把文件直接上传到接口，当然还有其他参数。

Controller

    @RequestMapping(value="/uploadExcel", produces = "application/json;charset=UTF-8")
    public @ResponseBody String uploadExcel(@RequestParam Map<String, String> data, @RequestParam("file") MultipartFile file) throws Exception {
        return service.uploadExcel(data, file);
    }

service

 public String uploadExcel(Map<String, String> data, MultipartFile file) throws Exception {
        return doPostFileRequest("/item/direction/coupon/uploadCouponExcel", data, file.getInputStream(), file.getOriginalFilename());
    }

util

 protected String doPostFileRequest(String url, Map<String, String> param, InputStream fis, String fileName) throws Exception {try {
            Connection conn = Jsoup.connect(user.getJdDomain() + url);
            if (param != null) {
                conn.data(param);
            }
            conn.data("file", fileName, fis);
            Connection.Response response = conn.timeout(DEFAULT_TIME_OUT).ignoreContentType(true).maxBodySize(0).followRedirects(true).method(Connection.Method.POST).execute();
            return response.body();
        } catch (UncheckedIOException var7) {
            throw new IOException(var7);
        }
    }

 

上面是上传,就是data方法

下载文件代码，请求别人的接口获取文件流，然后返回前台下载。

 @RequestMapping(value="/exportSyncResult", produces = "application/json;charset=UTF-8")
    public void exportSyncResult(@RequestParam Map<String, String> data, HttpServletResponse response) throws Exception {
        Connection.Response response1 = service.exportSyncResult(data);
        byte[] bytes = response1.bodyAsBytes();
        String s = response1.contentType();
        String header1 = response1.header("Content-Disposition");
        response.addHeader("Content-Disposition", header1);
        response.setContentType(s);
        response.getOutputStream().write(bytes);
    }

    @Override
    public Connection.Response exportSyncResult(Map<String, String> data) throws Exception {
        return getResponseIn("/item/direction/coupon/exportSyncResult", data);
    }

    public Connection.Response getResponseIn(String url, Map<String, String> param) throws Exception {
        getParam(param);
        User user = (User) SecurityUtils.getSubject().getSession().getAttribute("user");
        try {
            Connection conn = Jsoup.connect(user.getJdDomain() + url);

            if (param != null) {
                conn.data(param);
            }

            Connection.Response response = conn.timeout(DEFAULT_TIME_OUT).ignoreContentType(true).maxBodySize(0).followRedirects(true).method(Connection.Method.GET).execute();
            return response;
        } catch (UncheckedIOException var7) {
            throw new IOException(var7);
        }
    }