如果你想在Android应用中发送批量请求,你可以使用异步任务和线程池来处理。下面是一个示例代码,展示了如何使用线程池发送批量请求:
首先,你需要在你的项目中添加以下依赖项:
implementation 'com.android.volley:volley:1.2.0'
然后,创建一个类来处理批量请求:
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.RequestFuture;
import com.android.volley.toolbox.Volley;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
public class BatchRequestManager {
private ExecutorService executorService;
private RequestQueue requestQueue;
public BatchRequestManager() {
executorService = Executors.newFixedThreadPool(5);
requestQueue = Volley.newRequestQueue(App.getContext());
}
public void sendBatchRequest(List requests, final BatchRequestListener listener) {
List> futures = new ArrayList<>();
for (final JsonObjectRequest request : requests) {
RequestFuture future = RequestFuture.newFuture();
futures.add(future);
executorService.submit(new Runnable() {
@Override
public void run() {
requestQueue.add(request);
}
});
}
executorService.submit(new Runnable() {
@Override
public void run() {
try {
List responses = new ArrayList<>();
for (Future future : futures) {
JSONObject response = future.get();
responses.add(response);
}
listener.onBatchRequestSuccess(responses);
} catch (InterruptedException | ExecutionException e) {
listener.onBatchRequestError(e.getMessage());
}
}
});
}
public interface BatchRequestListener {
void onBatchRequestSuccess(List responses);
void onBatchRequestError(String error);
}
}
在你的Activity或Fragment中,你可以使用以下代码来发送批量请求:
List requests = new ArrayList<>();
requests.add(createJsonObjectRequest("http://example.com/api/endpoint1"));
requests.add(createJsonObjectRequest("http://example.com/api/endpoint2"));
requests.add(createJsonObjectRequest("http://example.com/api/endpoint3"));
BatchRequestManager batchRequestManager = new BatchRequestManager();
batchRequestManager.sendBatchRequest(requests, new BatchRequestManager.BatchRequestListener() {
@Override
public void onBatchRequestSuccess(List responses) {
// 处理批量请求成功的回调
}
@Override
public void onBatchRequestError(String error) {
// 处理批量请求失败的回调
}
});
private JsonObjectRequest createJsonObjectRequest(String url) {
return new JsonObjectRequest(Request.Method.GET, url, null,
new Response.Listener() {
@Override
public void onResponse(JSONObject response) {
// 处理单个请求成功的回调
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
// 处理单个请求失败的回调
}
});
}
在上面的代码中,我们使用了Volley库来发送HTTP请求,并使用线程池来处理并发请求。在sendBatchRequest
方法中,我们将每个请求添加到线程池中,并使用RequestFuture
来获取每个请求的响应。最后,我们在另一个线程中处理所有响应,并通过回调函数通知结果。
这是一个基本的示例,你可以根据自己的需求进行调整和扩展。