上一篇Okhttp官方文档网络权限uses-permission android:nameandroid.permission.INTERNET/引入okhttp包implementation com.squareup.okhttp3:okhttp:3.14.4在app module下的build.gradle文件中配置java8否则会报错。android { compileSdkVersion 30 buildToolsVersion 30.0.3 defaultConfig { ... } buildTypes { ... } // 增加java8的配置 compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } }MainActivity代码public class MainActivity extends AppCompatActivity { Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); new Thread(new Runnable() { Override public void run() { String url https://publicobject.com/helloworld.txt; //初始化okhttp客户端 OkHttpClient client new OkHttpClient(); //创建请求体 Request request new Request.Builder().url(url).get().build(); //执行请求 Response response null; try { response client.newCall(request).execute(); //获取服务器响应数据 if (response.isSuccessful()) { String result response.body().string(); Log.e(xxx, result); } } catch (IOException e) { e.printStackTrace(); } } }).start(); } }最终效果下一篇OKHTTP系列POST请求