小程序码生成错误图片
代码demo：
public Map getminiqrQr(String accessToken) { RestTemplate rest = new RestTemplate(); InputStream inputStream = null; OutputStream outputStream = null; try { String url = "https://api.weixin.qq.com/wxa/getwxacode?access_token="+accessToken; Mapparam = new HashMap<>(); param.put("page", "pages/index/index"); param.put("width", 430); param.put("auto_color", false); Mapline_color = new HashMap<>(); line_color.put("r", 0); line_color.put("g", 0); line_color.put("b", 0); param.put("line_color", line_color); LOG.info("调用生成微信URL接口传参:" + param); MultiValueMapheaders = new LinkedMultiValueMap<>(); HttpEntity requestEntity = new HttpEntity(param, headers); ResponseEntityentity = rest.exchange(url, HttpMethod.POST, requestEntity, byte[].class, new Object[0]); LOG.info("调用小程序生成微信永久小程序码URL接口返回结果:" + entity.getBody()); byte[] result = entity.getBody(); LOG.info(Base64.encodeBase64String(result)); inputStream = new ByteArrayInputStream(result); File file = new File("C:/Users/wangqiulin/Desktop/1.png"); if (!file.exists()){ file.createNewFile(); } outputStream = new FileOutputStream(file); int len = 0; byte[] buf = new byte[1024]; while ((len = inputStream.read(buf, 0, 1024)) != -1) { outputStream.write(buf, 0, len); } outputStream.flush(); } catch (Exception e) { LOG.error("调用小程序生成微信永久小程序码URL接口异常",e); } finally { if(inputStream != null){ try { inputStream.close(); } catch (IOException e) { e.printStackTrace(); } } if(outputStream != null){ try { outputStream.close(); } catch (IOException e) { e.printStackTrace(); } } } return null; } |
生成如下图片信息
这种现象偶然发生，有时多次调用后就可以成功，请问是什么问题
强力驱动