HttpClient上传文件传入MultipartFile类型

httpClient post方式上传MultipartFile文件

注意：builder.addBinaryBody("file", file.getInputStream(), ContentType.MULTIPART_FORM_DATA, fileName);// 文件流

第一个参数："file" 表现需要调用的上传文件接口文件名

返回 ”Required request part 'file' is not present” 错误时，就是因为该名称和调用的 url中文件名称不一样

第二个参数：传入文件流

第三个参数：文件类型

第四个参数：上传文件的名称

/**
     * post请求接口
     * @param url
     * @param imageUploadFileName
     * @param file
     * @param headerParams
     * @param otherParams
     * @return
     */
    public static String postResultMultipartFile(String url,String imageUploadFileName,MultipartFile file,Map<String,String> headerParams, Map<String,String> otherParams) {
        CloseableHttpClient httpClient = HttpClients.createDefault();
        String result = "";
        HttpEntity httpEntity = null;
        HttpEntity responseEntity = null;
        try {
            String fileName = file.getOriginalFilename();
            HttpPost httpPost = new HttpPost(url);
            //添加header
//            for (Map.Entry<String, String> e : headerParams.entrySet()) {
//                httpPost.addHeader(e.getKey(), e.getValue());
//            }
            MultipartEntityBuilder builder = MultipartEntityBuilder.create();
            builder.setCharset(Charset.forName("utf-8"));
            builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);//加上此行代码解决返回中文乱码问题
            builder.addBinaryBody("file", file.getInputStream(), ContentType.MULTIPART_FORM_DATA, fileName);// 文件流
//            for (Map.Entry<String, String> e : otherParams.entrySet()) {
//                builder.addTextBody(e.getKey(), e.getValue());// 类似浏览器表单提交，对应input的name和value
//            }
            httpEntity = builder.build();
            httpPost.setEntity(httpEntity);
            HttpResponse response = httpClient.execute(httpPost);// 执行提交
            responseEntity = response.getEntity();
            if (responseEntity != null) {
                // 将响应内容转换为字符串
                result = EntityUtils.toString(responseEntity, Charset.forName("UTF-8"));
            }
        } catch (IOException e) {
            log.info("------------------{}",e.getMessage());
            e.printStackTrace();
        }catch (Exception e) {
            log.info("------------------{}",e.getMessage());
            e.printStackTrace();
        }  finally {
            printLog(url, HttpMethod.POST, httpEntity, null, responseEntity);
        }
        return result;
    }

控制器端代码

@ApiOperation(value = "通过http调用***文件接口 上传图片到***IDC服务器")
    @PostMapping(value = "/upload")
    public BizBaseResponse<String> upload(@RequestParam("file") MultipartFile file, String dir) {
        String upload = null;
        try {
            upload = openApiShopFileService.upload(file,dir, true);
        } catch (BizException e) {
            log.error("通过http调用***文件接口 上传图片到***IDC服务器 异常(/openapi/shop/addShopInfoToThShop)", e);
            return addError(BizErrorCodeEnum.OPERATION_FAILED, e.getErrorMessage());
        } catch (Exception e) {
            log.error("通过http调用***文件接口 上传图片到***IDC服务器 异常(/openapi/shop/addShopInfoToThShop)", e);
            return addError(BizErrorCodeEnum.OPERATION_FAILED, "上传文件失败");
        }
        return new BizBaseResponse(upload);
    }

postman调用测试：

HttpClient上传文件传入MultipartFile类型

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