网络请求库全面对比和优缺点分析

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.StringRequest;
import com.android.volley.toolbox.Volley;

// ...

RequestQueue queue = Volley.newRequestQueue(this);
String url = "https://api.example.com/data";

StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
        new Response.Listener<String>() {
            @Override
            public void onResponse(String response) {
                // 处理响应
                Log.d("Response", response);
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                // 处理错误
                Log.e("Error", error.toString());
            }
        });

queue.add(stringRequest);

import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;
import retrofit2.http.GET;

// 定义API接口
public interface ApiService {
    @GET("data")
    Call<String> getData();
}

// ...

Retrofit retrofit = new Retrofit.Builder()
        .baseUrl("https://api.example.com/")
        .addConverterFactory(GsonConverterFactory.create())
        .build();

ApiService apiService = retrofit.create(ApiService.class);
Call<String> call = apiService.getData();

call.enqueue(new Callback<String>() {
    @Override
    public void onResponse(Call<String> call, Response<String> response) {
        // 处理响应
        Log.d("Response", response.body());
    }

    @Override
    public void onFailure(Call<String> call, Throwable t) {
        // 处理错误
        Log.e("Error", t.toString());
    }
});

import java.io.IOException;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

// ...

OkHttpClient client = new OkHttpClient();
String url = "https://api.example.com/data";

Request request = new Request.Builder()
        .url(url)
        .build();

client.newCall(request).enqueue(new Callback() {
    @Override
    public void onFailure(Call call, IOException e) {
        // 处理错误
        Log.e("Error", e.toString());
    }

    @Override
    public void onResponse(Call call, Response response) throws IOException {
        // 处理响应
        Log.d("Response", response.body().string());
    }
});

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class NetworkUtil {
    public static String sendGetRequest(String urlString) throws IOException {
        URL url = new URL(urlString);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("GET");
        connection.connect();

        int responseCode = connection.getResponseCode();
        if (responseCode == HttpURLConnection.HTTP_OK) {
            BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            StringBuilder response = new StringBuilder();
            String line;
            while ((line = reader.readLine()) != null) {
                response.append(line);
            }
            reader.close();
            return response.toString();
        } else {
            return "Error: HTTP response code: " + responseCode;
        }
    }
}

import com.tencent.mars.sample.core.Command;
import com.tencent.mars.sample.wrapper.remote.MarsServiceProxy;
import com.tencent.mars.sample.wrapper.remote.NanoMarsTaskWrapper;

public class MarsSampleApplication extends Application {

    @Override
    public void onCreate() {
        super.onCreate();

        // 初始化 Mars
        MarsServiceProxy.init(this, null);

        // 创建一个 Mars Task
        NanoMarsTaskWrapper marsTaskWrapper = new NanoMarsTaskWrapper(new Command(), new NanoMarsTaskWrapper.MarsTaskProperty(0, 0, "mars.sample"));

        // 设置回调
        marsTaskWrapper.setCallback(new NanoMarsTaskWrapper.MarsTaskWrapperCallback() {
            @Override
            public void onSuccess(NanoMarsTaskWrapper marsTaskWrapper) {
                // 请求成功
            }

            @Override
            public void onPreEncode(NanoMarsTaskWrapper marsTaskWrapper) {
                // 请求前编码
            }

            @Override
            public void onPostDecode(NanoMarsTaskWrapper marsTaskWrapper, int i, int i1) {
                // 请求后解码
            }
        });

        // 发送请求
        MarsServiceProxy.send(marsTaskWrapper);
    }
}

#include <stdio.h>
#include <curl/curl.h>

size_t write_callback(void *ptr, size_t size, size_t nmemb, void *userdata) {
    // 将接收到的数据打印到标准输出
    printf("%.*s", (int)(size * nmemb), (char *)ptr);
    return size * nmemb;
}

int main(void) {
    CURL *curl;
    CURLcode res;

    // 初始化 libcurl
    curl_global_init(CURL_GLOBAL_DEFAULT);
    curl = curl_easy_init();
    if(curl) {
        // 设置请求的 URL
        curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");

        // 设置回调函数以处理响应数据
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback);

        // 执行请求
        res = curl_easy_perform(curl);

        // 检查请求是否成功
        if(res != CURLE_OK) {
            fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
        }

        // 清理
        curl_easy_cleanup(curl);
    }

    // 关闭 libcurl
    curl_global_cleanup();
    return 0;
}