Java实现企业微信上传临时文件获取media

• 1 上传临时素材API
• 2 测试代码
• 3 测试完成
• 4 遇到的问题
• • 4.1 文件类型无法解析

调试工具

素材上传得到media_id，该media_id仅三天内有效
media_id在同一企业内应用之间可以共享

请求方式：POST（HTTPS）
请求地址：https://qyapi.weixin.qq.com/cgi-bin/media/uploadaccess_token=ACCESS_TOKEN&type=TYPE

使用multipart/form-data POST上传文件， 文件标识名为”media”
参数说明：

POST的请求包中，form-data中媒体文件标识，应包含有 filename、filelength、content-type等信息

filename标识文件展示的名称。比如，使用该media_id发消息时，展示的文件名由该字段控制

请求示例：

POST https://qyapi.weixin.qq.com/cgi-bin/media/upload?access_token=accesstoken001&type=file 
HTTP/1.1Content-Type: multipart/form-data; boundary=-------------------------acebdf13572468
Content-Length: 220---------------------------acebdf13572468
Content-Disposition: form-data; name="media";filename="wework.txt"; filelength=6
Content-Type: application/octet-streammytext---------------------------acebdf13572468--

    @ApiOperation(value = "企业微信上传临时文件", notes = "企业微信上传临时文件")
    @PostMapping("/uploadimg")
    public String uploadimg(MultipartFile files) throws IOException {
        RestTemplate restTemplate = new RestTemplate();

        URI uri = UriComponentsBuilder.fromHttpUrl("https://qyapi.weixin.qq.com/cgi-bin/media/upload")
                .queryParam("access_token", "oWtvz7v8bG8_y3a-OducvPyR4312eAmkPLZyLMnP_tKcoQ0c1ZIgWzaXHnp6rZxCgtFHCMXTi6MgOh0jEwwaSglz8TnFdSdPRK2IF1yKA_u5CGwVSgBrkyw2Gx5PgMKlWr8xmikRvMZXVahDS1CIiJZN9D97ZfScozLIFF-25xPDES2n9_8ZKruTj3olO8E5bGXnYsmgwAyU2jxx3CcoNQ")
                .queryParam("type", "file")
                .build().toUri();
        InputStream inputStream = files.getInputStream();
        String s = restTemplate.postForObject(uri, new InputStreamResource(inputStream), String.class);
        return s;
    }

说明传递的文件没有文件名

个人代码:

    @ApiOperation(value = "企业微信上传临时文件", notes = "企业微信上传临时文件")
    @PostMapping("/uploadimg")
    public String uploadimg() throws IOException {
        RestTemplate restTemplate = new RestTemplate();
        URI uri = UriComponentsBuilder.fromHttpUrl("https://qyapi.weixin.qq.com/cgi-bin/media/upload")
                .queryParam("access_token", "oWtvz7v8bG8_y3a-OducvPyR4312eAmkPLZyLMnP_tKcoQ0c1ZIgWzaXHnp6rZxCgtFHCMXTi6MgOh0jEwwaSglz8TnFdSdPRK2IF1yKA_u5CGwVSgBrkyw2Gx5PgMKlWr8xmikRvMZXVahDS1CIiJZN9D97ZfScozLIFF-25xPDES2n9_8ZKruTj3olO8E5bGXnYsmgwAyU2jxx3CcoNQ")
                .queryParam("type", "image")
                .build().toUri();

        FileSystemResource fileSystemResource = new FileSystemResource("C:\Users\Administrator\Desktop\3d3c789387ffd4e12006f16f7c78b187.jpg");

        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.MULTIPART_FORM_DATA);

        
        ContentDisposition build = ContentDisposition.builder("form-data").filename(fileSystemResource.getFilename()).build();
        headers.setContentDisposition(build);
        MultiValueMap params = new linkedMultiValueMap<>();
        params.add("media", fileSystemResource);

        HttpEntity> requestEntity = new HttpEntity<>(params, headers);

        String s = restTemplate.postForObject(uri,requestEntity , String.class);
        return s;
    }