Okhttp系列：简单的不用传参的Get请求示例

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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