调getWXACodeUnlimit失败
发布于 5 年前 作者 yanghou 18270 次浏览 来自 问答

java开发使用post请求调接口失败了，返回错误信息{“errcode”:41002,“errmsg”:“appid missing hint: [2YPCrA06382994]”}，这接口也没有让传appid啊，access_token成功获取到了。有没有例子，求一个~


2 回复

我用Spring   的 RestTemplate

是这样写的

public static void getQr(String sceneStr, String accessToken) {
 
    RestTemplate rest = new RestTemplate();
    InputStream inputStream = null;
    OutputStream outputStream = null;
    try {
       String url = "https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token="+accessToken;
       Map<String,Object> param = new HashMap<String,Object>();
       param.put("scene", sceneStr);
       param.put("page", "pages/index/index");
       param.put("width", 430);
       param.put("auto_color", false);
       Map<String,Object> line_color = new HashMap<String,Object>();
       line_color.put("r", 0);
       line_color.put("g", 0);
       line_color.put("b", 0);
       param.put("line_color", line_color);
 
       HttpHeaders headers = new HttpHeaders();
 
       headers.setContentType(MediaType.APPLICATION_JSON);
       System.out.println("参数" + param);
       HttpEntity requestEntity = new HttpEntity(param, headers);
       ResponseEntity<byte[]> entity = rest.exchange(url, HttpMethod.POST, requestEntity, byte[].class, new Object[0]);
       byte[] result = entity.getBody();
       if(result.length>2000){
       inputStream = new ByteArrayInputStream(result);
       String filePathPre = "路径";
       if(!filePathPreDir.exists()){
          filePathPreDir.mkdirs();
       }
       File file = new File(filePathPre+"xxx.jpg");
       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) {
       
    } finally {
       if(inputStream != null){
          try {
             inputStream.close();
          } catch (IOException e) {
             e.printStackTrace();
          }
       }
       if(outputStream != null){
          try {
             outputStream.close();
          } catch (IOException e) {
             e.printStackTrace();
          }
       }
    }
 
 }

这是获取token的时候返回的吧，你是不是方法名写错了

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