Java生成微信小程序二维码并显示在HTML页面：如何解决Base64编码显示失败的问题？

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 connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setDoOutput(true);
connection.setDoInput(true);

PrintWriter writer = new PrintWriter(connection.getOutputStream());
JSONObject paramJson = new JSONObject();
paramJson.put("scene", "id=1");
paramJson.put("page", "/pages/index/index");
writer.write(paramJson.toString());
writer.flush();

// 处理图片数据流，转换为Base64字符串
InputStream inputStream = connection.getInputStream();
byte[] bytes = inputStream.readAllBytes(); // 使用readAllBytes()读取所有字节
String base64Encoded = Base64.getEncoder().encodeToString(bytes); // 使用Base64.getEncoder()进行编码
inputStream.close();

// 将Base64字符串返回给前端
// ... (此处根据您的框架，例如Spring MVC，将base64Encoded返回给前端) ...

@@##@@</img>

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