get请求图片文件转为base64编码

    public static String convertImageToBase64(String url) throws IOException {
        String urls = url.replaceAll("192.168.10.242", "192.192.192.192");
        // 创建HTTP客户端
        try (CloseableHttpClient httpClient = HttpClients.createDefault();
             // 发送GET请求
             CloseableHttpResponse response = httpClient.execute(new HttpGet(urls));
             // 获取图片输入流
             InputStream inputStream = response.getEntity().getContent()) {

            // 验证响应状态
            if (response.getStatusLine().getStatusCode() != 200) {
                throw new IOException("获取图片失败，状态码: " + response.getStatusLine().getStatusCode());
            }
            // 读取图片字节
            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
            byte[] buffer = new byte[4096];
            int bytesRead;
            while ((bytesRead = inputStream.read(buffer)) != -1) {
                outputStream.write(buffer, 0, bytesRead);
            }

            // 获取图片MIME类型
            String contentType = response.getEntity().getContentType().getValue();

            // 转换为Base64并添加数据头
            return "data:" + contentType + ";base64," +
                    Base64.getEncoder().encodeToString(outputStream.toByteArray());
        }

    }

    public static void main(String[] args) throws IOException {
        System.out.println(convertImageToBase64("http://192.168.14.4:8803/1.png"));
    }