菏泽阿里云代理商：android上传图片到服务器demo

以下是一个简单的Android上传图片到服务器的示例代码：

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.util.Log;

import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class UploadImageTask extends AsyncTask<String, Void, String> {

    private static final String TAG = "UploadImageTask";

    private Bitmap bitmap;
    private String serverUrl;

    public UploadImageTask(Bitmap bitmap, String serverUrl) {
        this.bitmap = bitmap;
        this.serverUrl = serverUrl;
    }

    @Override
    protected String doInBackground(String... params) {
        String responseString = null;

        try {
            URL url = new URL(serverUrl);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setDoOutput(true);
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Content-Type", "multipart/form-data;boundary=*****");
            connection.setReadTimeout(30000);
            connection.setConnectTimeout(30000);
            connection.connect();

            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
            byte[] imageBytes = baos.toByteArray();

            DataOutputStream outputStream = new DataOutputStream(connection.getOutputStream());
            outputStream.writeBytes("--*****rn");
            outputStream.writeBytes("Content-Disposition: form-data; name="image";filename="image.jpg"rn");
            outputStream.writeBytes("Content-Type: image/jpegrnrn");
            outputStream.write(imageBytes);
            outputStream.writeBytes("rn");
            outputStream.writeBytes("--*****--rn");

            outputStream.flush();
            outputStream.close();

            int responseCode = connection.getResponseCode();
            if (responseCode == HttpURLConnection.HTTP_OK) {
                InputStream inputStream = connection.getInputStream();
                ByteArrayOutputStream responseStream = new ByteArrayOutputStream();
                byte[] buffer = new byte[1024];
                int bytesRead;
                while ((bytesRead = inputStream.read(buffer)) != -1) {
                    responseStream.write(buffer, 0, bytesRead);
                }
                responseString = responseStream.toString();
                inputStream.close();
                responseStream.close();
            } else {
                Log.e(TAG, "Server returned non-OK response code: " + responseCode);
            }
            connection.disconnect();
        } catch (Exception e) {
            Log.e(TAG, "Error uploading image: " + e.getMessage());
        }

        return responseString;
    }

    @Override
    protected void onPostExecute(String result) {
        super.onPostExecute(result);
        // 处理服务器返回的结果
    }
}

使用示例：

Bitmap bitmap = BitmapFactory.decodeFile("/path/to/image.jpg");
String serverUrl = "http://example.com/upload.php";
new UploadImageTask(bitmap, serverUrl).execute();

请将 http://example.com/upload.php 替换为你实际的服务器地址。

注意：在真实的应用中，需要处理一些错误和异常，例如网络连接是否可用、服务器返回的错误信息等。这里的示例仅提供一个基本的思路，具体的实现可能需要根据你的需求进行适当调整和扩展。

下面是一个使用Android将图片上传到服务器的示例代码:

private void uploadImageToServer(String imagePath) {
    OkHttpClient client = new OkHttpClient();

    File imageFile = new File(imagePath);
    MultipartBody.Builder requestBodyBuilder = new MultipartBody.Builder()
            .setType(MultipartBody.FORM)
            .addFormDataPart("image", imageFile.getName(),
                    RequestBody.create(imageFile, MediaType.parse("image/jpeg")));

    RequestBody requestBody = requestBodyBuilder.build();

    Request request = new Request.Builder()
            .url("http://your-server-url.com/upload")
            .post(requestBody)
            .build();

    client.newCall(request).enqueue(new Callback() {
        @Override
        public void onFailure(Call call, IOException e) {
            // Handle upload failure
        }

        @Override
        public void onResponse(Call call, Response response) throws IOException {
            // Handle upload success
        }
    });
}

请替换 http://your-server-url.com/upload 为实际的服务器上传URL。然后在需要上传图片的地方调用该方法，传入图片的路径。确保在应用的Manifest文件中添加了Internet权限。

此示例使用OkHttp库来进行网络请求，并将图片封装为Multipart形式的请求。您可以根据需要在服务器端进行相应的处理。