java动态创建MultipartFile表单

小鱼儿 2022-01-29 01:11 921阅读 0赞

因公司需要，出现一个接口通过网络请求调用另外一个接口的情况，该接口恰好是导入excel文件，第一个接口负责把文件转发到第二个接口，所以第一个接口就需要把动态构建MultipartFile表单，才能调成功第二个处理业务的接口。各种百度，各种不不好使，最终，终于在各路大神的指导下完成了。

踩了一天的坑，总结出来如下代码

/**
         *
         * @return
         */
        @PostMapping(value = "/import")
        public Result importSolr(@RequestParam(name = "file") MultipartFile file){
            Result result = null;
            try {
                String originalFilename = file.getOriginalFilename();
                if (!ExcelUtils.isExcel(originalFilename)){
                    return Result.buildErrorMsg("请导入Excel文件","0010010002");
                }
                MultipartEntityBuilder fileBuilder  = MultipartEntityBuilder.create();
                fileBuilder.setMode(HttpMultipartMode.RFC6532);
                fileBuilder.addBinaryBody("file",file.getInputStream(), ContentType.create("multipart/form-data"),file.getOriginalFilename());
                HttpEntity build = fileBuilder.build();
                HttpPost request = new HttpPost(WebConfig.HOST_KNOWLEDGE + WebConfig.HOST_KNOWLEDGE_SOLRIMPORT);
                request.setEntity(build);
                HttpClient httpClient = HttpClients.createDefault();
                HttpResponse httpResponse = httpClient.execute(request);
                result = HttpUtils.buildHttpResponse(httpResponse);
            } catch (IOException e) {
                e.printStackTrace();
                result = Result.buildErrorMsg("系统发生异常","0010010007");
            }
            return result;
        }