HarmonyOS 将相册中的图片上传到服务器

在HarmonyOS中调用相册中的图片进行上传，可以通过以下步骤实现：

1. 获取相册中的图片：使用MediaStore API获取相册中的图片，具体可以参考HarmonyOS官方文档。
2. 选择需要上传的图片：将获取到的图片展示在界面中，让用户选择需要上传的图片。
3. 上传图片：使用HTTP协议将选择的图片上传到服务器上，具体可以使用HarmonyOS提供的HttpURLConnection类或者OkHttp库实现。

以下是一个简单的示例代码：

// 获取相册中的图片
Uri uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
String[] projection = {MediaStore.Images.Media.DATA};
Cursor cursor = getContext().getContentResolver().query(uri, projection, null, null, null);

// 展示图片并选择需要上传的图片
// ...

// 上传图片
String url = "http://your.server.com/upload";
HttpURLConnection conn = null;
DataOutputStream dos = null;
String lineEnd = "\r
";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;

try {
  URL uploadUrl = new URL(url);
  conn = (HttpURLConnection) uploadUrl.openConnection();
  conn.setDoInput(true);
  conn.setDoOutput(true);
  conn.setUseCaches(false);
  conn.setRequestMethod("POST");
  conn.setRequestProperty("Connection", "Keep-Alive");
  conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);

  dos = new DataOutputStream(conn.getOutputStream());

  // 添加图片数据
  dos.writeBytes(twoHyphens + boundary + lineEnd);
  dos.writeBytes("Content-Disposition: form-data; name=\"image\";filename=\"" + selectedImagePath + "\"" + lineEnd);
  dos.writeBytes(lineEnd);

  FileInputStream fileInputStream = new FileInputStream(new File(selectedImagePath));
  bytesAvailable = fileInputStream.available();
  bufferSize = Math.min(bytesAvailable, maxBufferSize);
  buffer = new byte[bufferSize];
  bytesRead = fileInputStream.read(buffer, 0, bufferSize);

  while (bytesRead > 0) {
    dos.write(buffer, 0, bufferSize);
    bytesAvailable = fileInputStream.available();
    bufferSize = Math.min(bytesAvailable, maxBufferSize);
    bytesRead = fileInputStream.read(buffer, 0, bufferSize);
  }

  dos.writeBytes(lineEnd);
  dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);

  // 发送请求并获取响应
  int responseCode = conn.getResponseCode();
  if (responseCode == HttpURLConnection.HTTP_OK) {
    InputStream inputStream = conn.getInputStream();
    // 处理响应数据
  }

} catch (Exception e) {
  e.printStackTrace();
} finally {
  if (dos != null) {
    try {
      dos.flush();
      dos.close();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
  if (conn != null) {
    conn.disconnect();
  }
}

https://gitee.com/openharmony/docs/blob/OpenHarmony-3.2-Beta5/zh-cn/application-dev/reference/apis/js-apis-request.md

另外结合自己的上传业务需求