java - JAVA 如何生成带参数的微信小程序二维码？

Question

生成后展示在html上最好，保存在电脑上也行
我参考网上的方法，把encode后的数据加上“data:image/jpeg;base64,”放到img。但没有成功，请问该如何生成
JAVA代码:

String accessToken = getAccessToken();//调用微信接口生成二维码URL url = new URL("https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=" + accessToken);HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();httpURLConnection.setRequestMethod("POST");// 提交模式// 发送POST请求必须设置如下两行httpURLConnection.setDoOutput(true);httpURLConnection.setDoInput(true);// 获取URLConnection对象对应的输出流PrintWriter printWriter = new PrintWriter(httpURLConnection.getOutputStream());// 发送请求参数JSONObject paramJson = new JSONObject();paramJson.put("scene", "id=1");paramJson.put("page", "/pages/index/index");printWriter.write(paramJson.toString());// flush输出流的缓冲printWriter.flush();//开始获取数据BufferedInputStream bis = new BufferedInputStream(httpURLConnection.getInputStream());ByteOutputStream byteOutputStream = new ByteOutputStream();byte[] bytes = new byte[1024];int len=0;while ((len=bis.read(bytes))!=-1){    byteOutputStream.write(bytes,0,len);}String encode = Base64.encode(byteOutputStream.toByteArray());

html:

<img src="{{src}}" style="width: 300px">

js:

axios.get('/qrcode/test',{    params:{        code: text    }}).then(function (res) {    var data = res.data.data;    that.src = "data:image/jpeg;base64,"+data;});

Answer 1

请贴出核心代码