Android 网络请求框架(一) OkHttp基本使用

因自己忘性太大，故记录此系列，以便复制粘贴

build.gradle配置

    implementation 'com.squareup.okhttp3:okhttp:3.14.4'
    implementation 'com.squareup.okio:okio:1.17.2'

AndroidManifest.xml添加网络权限

    <uses-permission android:name="android.permission.INTERNET"/>

异步GET

    private void get(String url){
        OkHttpClient client = new OkHttpClient.Builder()
                .connectTimeout(20, TimeUnit.SECONDS)//连接超时
                .readTimeout(10,TimeUnit.SECONDS)//读取超时
                .build();
        Request request = new Request.Builder()
                .method("GET",null)
                .url(url)
                .build();
        Call call = client.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                Log.e(TAG,e.getMessage());
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                Log.d(TAG,response.body().string());
            }
        });
    }

同步GET

    private void get(String url){
        OkHttpClient client = new OkHttpClient.Builder()
                .connectTimeout(20, TimeUnit.SECONDS)//连接超时
                .readTimeout(10,TimeUnit.SECONDS)//读取超时
                .build();
        Request request = new Request.Builder()
                .method("GET",null)
                .url(url)
                .build();
        Call call = client.newCall(request);
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    //异步使用enqueue方法
                    Response response = call.execute();
                    if (response.isSuccessful()){
                        Log.i(TAG,response.body().string());
                    }else {
                        Log.e(TAG,response.message());
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }).start();
    }

异步POST

    private void post(String url){
        OkHttpClient client = new OkHttpClient.Builder()
                .connectTimeout(20,TimeUnit.SECONDS)
                .readTimeout(10,TimeUnit.SECONDS)
                .build();
        //构造请求体(提交表单)
        RequestBody body = new FormBody.Builder()
                .add("key","value")  //可添加多条参数
                .build();
        Request request = new Request.Builder()
                .url(url)
                .method("POST",body)
                .build();
        Call call = client.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                Log.e(TAG,e.getMessage());
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                Log.d(TAG,response.body().string());
            }
        });
    }

同步POST

    private void post(String url){
        OkHttpClient client = new OkHttpClient.Builder()
                .connectTimeout(20,TimeUnit.SECONDS)
                .readTimeout(10,TimeUnit.SECONDS)
                .build();
        //构造请求体(提交表单)
        RequestBody body = new FormBody.Builder()
                .add("key","value")
                .build();
        Request request = new Request.Builder()
                .url(url)
                .method("POST",body)
                .build();
        Call call = client.newCall(request);
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    Response response = call.execute();
                    if (response.isSuccessful()){
                        Log.d(TAG,response.body().string());
                    }else {
                        Log.e(TAG,response.message());
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }).start();
    }

Okhttp基本使用步骤如下:

1. 创建 OkHttpClient 实例
2. 创建 Request 实例
3. 通过 OkHttpClient 和 Request 封装成一个请求 Call
4. 同步请求调用 Call.execute()，异步请求调用 Call.enqueue()

参考链接：点击跳转