首先通过提审素材上传接口上传了图片，返回了 mediaid 接口地址：https://api.weixin.qq.com/wxa/uploadmedia 返回参数： { "type": "image", "mediaid": "4GifapERF3pD6QzqGHFPxcVKo0nHwX-rg-JtJQgTwCAz-4-ml1P6XPFORA9Sq05yBp3W09iXoGzvFO-_Tr5vIg",         "errcode": 0,         "errmsg": "ok" } 然后通过获取永久素材接口，通过该mediaid获取图片，上传到oss中或者生成本地图片，生成的图片无法打开 接口地址：https://api.weixin.qq.com/cgi-bin/material/get_material 获取后上传到oss中，返回的地址是： http://ztkj-wechat.oss-cn-shenzhen.aliyuncs.com/20220629143925593.jpg 生成的图片打开提示如下截图： [图片] 相关代码如下： 上传代码： //请求头设置 HttpHeaders headers = new HttpHeaders(); headers.setContentType(MediaType.MULTIPART_FORM_DATA); headers.setContentLength(qo.getMedia().getSize()); //设置请求体，注意是LinkedMultiValueMap MultiValueMap<String, Object> form = new LinkedMultiValueMap<>(); form.add("media", qo.getMedia().getResource()); String url = CallWeChatApiServiceHelp.getUrlByAuthorizerAccessToken(WeChatEnums.WechatApiUrl.uploadmedia, qo); UploadMediaResDto uploadMediaResDto = new RestTemplate().postForObject(url, new HttpEntity<>(form, headers), UploadMediaResDto.class); 获取素材接口代码如下： String url = CallWeChatApiServiceHelp.getUrlByAuthorizerAccessToken(WeChatEnums.WechatApiUrl.get_material, qo); GetMaterialReqDto getMaterialReqDto = new GetMaterialReqDto().setMedia_id(qo.getMediaId()); ResponseEntity<byte[]> rsp = new RestTemplate().exchange(url, HttpMethod.POST, new HttpEntity<>(getMaterialReqDto), byte[].class); Assert.notNull(rsp, "调用获取永久素材接口返回为null"); //上传图片 String newFileName = String.format("%s.jpg", CommonUtil.createCurrentGeneratorFolderNameByTimeStamp()); String remotePath = String.format("%s/%s", CommonConstant.WXCHAT_MINIO_UPLOAD_PREFIX, newFileName); String uploadFile = MinIoUtil.uploadFile(this.minIoProperties, newFileName, new ByteArrayInputStream(rsp.getBody()), remotePath); 寻求帮助，谢谢

首选通过上传提审素材接口上传了一张图片//请求头设置 HttpHeaders headers = new HttpHeaders(); headers.setContentType(MediaType.MULTIPART_FORM_DATA); headers.setContentLength(qo.getMedia().getSize()); //设置请求体，注意是LinkedMultiValueMap MultiValueMap<String, Object> form = new LinkedMultiValueMap<>(); form.add("media", qo.getMedia().getResource()); UploadMediaResDto uploadMediaResDto = CallWeChatApiServiceHelp.callBasePostInterfaceHandlerOnAuthorizerAccessToken(WeChatEnums.WechatApiUrl.uploadmedia, qo, new HttpEntity<>(form, headers), UploadMediaResDto.class); 上传后返回了一个mediaid 2 然后通过获取永久素材接口传入该mediaid，返回了byte[] 上传到oss中(或者本地) 都发现文件不完全，打不开，但是相同代码本地测试其他上传接口没有问题，现在不知道哪个环节出了问题，是微信接收到的图片不完整还是 下载下来的流不完整 String url = CallWeChatApiServiceHelp.getUrlByAuthorizerAccessToken(WeChatEnums.WechatApiUrl.get_material, qo); GetMaterialReqDto getMaterialReqDto = new GetMaterialReqDto().setMedia_id(qo.getMediaId()); ResponseEntity<byte[]> rsp = restTemplate.exchange(url, HttpMethod.POST, new HttpEntity<>(getMaterialReqDto), byte[].class); Assert.notNull(rsp, "调用获取永久素材接口返回为null"); //上传图片 String newFileName = String.format("%s.jpg", CommonUtil.createCurrentGeneratorFolderNameByTimeStamp()); String remotePath = String.format("%s/%s", CommonConstant.WXCHAT_MINIO_UPLOAD_PREFIX, newFileName); String uploadFile = MinIoUtil.uploadFile(this.minIoProperties, newFileName, new ByteArrayInputStream(rsp.getBody()), remotePath); return uploadFile; 麻烦指教一下