1，首先获取access_token
@Override
public String getAudioMinAppToken() {
String accessToken;
try {
String requestUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=xxxxxx&secret=xxxxxxxx";
String data = HttpClientUtil.doGet(requestUrl);
JSONObject json = JSONObject.parseObject(data);
accessToken = String.valueOf(json.get("access_token"));
} catch (Exception e) {
logger.error("生成access_token异常", e);
throw new CommonException(CommonErrorCode.UNKNOWN_ERROR, "获取access_token失败");
}
return accessToken;
}
2,获取小程序二维码
@Override
public Map<String, String> createWxQRCode(String scene, String page, Integer width, Boolean autoColor, Object lineColor, Boolean isHyaline) {
Map<String, String> map = new HashMap<>(16);
String token;
try {
String tokenKey = RedisKeyCenter.getAudioMinAppToken();
if (redisService.get(tokenKey) != null && redisService.isKeyExist(tokenKey)) {
token = redisService.get(tokenKey);
} else {
token = getAudioMinAppToken();
redisService.set(tokenKey, token, 60 * 60 * 2, TimeUnit.SECONDS);
}
if (scene == null) {
scene = "n=1234";
}
if (page == null) {
page = "pages/index";
}
if (isHyaline == null) {
isHyaline = false;
}
Map<String, Object> params = new HashMap<>(16);
params.put("scene", scene);
params.put("page", page);
params.put("width", width);
params.put("auto_color", autoColor);
params.put("line_color", lineColor);
params.put("is_hyaline", isHyaline);
String url = ApplicationConstant.MINAPP_GET_QR_CODE_URL.replace("ACCESS_TOKEN",token);
logger.info("request rul is :" ,url);
InputStream inputStream = HttpClientUtil.jsonPostToStream(url,params);
String result = StreamUtils.getBase64FromInputStream(inputStream);
String pic = "data:image/jpeg;base64," + result;
map.put("pic", pic);
} catch (Exception e) {
logger.error("生成小程序二维码出错", e);
throw new CommonException(CommonErrorCode.UNKNOWN_ERROR, "生成小程序二维码出错");
}
return map;
}