OkHttpClient,cache缓存,拦截器

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导入okhttp依赖

compile 'com.squareup.okhttp3:okhttp:3.9.0'

MainActivity里面

public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //get();       // post();        //postString();        //form();       // multipartBody();....        cache();//缓存        //perCall();    }    public void get(){        new Thread(new Runnable() {            @Override            public void run() {                try {                    OkHttpClient client = new OkHttpClient.Builder()                            //  .addInterceptor(new LoggingInterceptor())                            .addNetworkInterceptor(new LoggingInterceptor())                            .build();                    Request request = new Request.Builder()                            .url("http://publicobject.com/helloworld.txt")                            .build();                    Call call = client.newCall(request);                    Response response = call.execute();                    if(response.isSuccessful()){                        //返回的数据是 android okhttp机器人图案                        System.out.println("response = " + response.body().string());                    }                } catch (Exception e) {                    e.printStackTrace();                }            }        }).start();    }    //post    private void post(){        OkHttpClient client = new OkHttpClient();        String s = Build.BRAND + "/" + Build.MODEL + "/"+Build.VERSION.RELEASE;        Request request = new Request.Builder()                .url("http://tingapi.ting.baidu.com/v1/restserver/ting?method=baidu.ting.billboard.billList&type=1&size=10&offset=0")                .addHeader("User-Agent",""+s)                .build();        Call call = client.newCall(request);        call.enqueue(new Callback() {            @Override            public void onFailure(Call call, IOException e) {                //输出异常                System.out.println("e ="+e);            }            @Override            public void onResponse(Call call, Response response) throws IOException {                //输出 请求到的数据                System.out.println("response.body().string() = " + response.body().string());            }        }); }    public static final MediaType MEDIA_TYPE_MARKDOWN            = MediaType.parse("text/x-markdown; charset=utf-8");    public void postString(){        new Thread(new Runnable() {            @Override            public void run() {                try {                    OkHttpClient client = new OkHttpClient();                    String postBody = ""                            + "Releases\n"                            + "--------\n"                            + "\n"                            + " * _1.0_ May 6, 2013\n"                            + " * _1.1_ June 15, 2013\n"                            + " * _1.2_ August 11, 2013\n";                    Request request = new Request.Builder()                            .url("https://api.github.com/markdown/raw")                            .post(RequestBody.create(MEDIA_TYPE_MARKDOWN,postBody))                            .build();                    Response response = client.newCall(request).execute();                    if(response.isSuccessful()){                        //返回一堆 网页的布局 h2                        System.out.println(response.body().string());                    }                } catch (Exception e) {                    e.printStackTrace();                }            }        }).start();    }    public void form(){        //表单 post请求 携带参数        RequestBody requestBody = new FormBody.Builder()                .add("search","Jurassic Park")                .build();        OkHttpClient client = new OkHttpClient();        Request request = new Request.Builder()                .url("https://en.wikipedia.org/w/index.php")                .post(requestBody)                .build();        client.newCall(request).enqueue(new Callback() {            @Override            public void onFailure(Call call, IOException e) {            }            @Override            public void onResponse(Call call, Response response) throws IOException {                System.out.println(response.body().string());            }        }); }    public static final MediaType MEDIA_TYPE_PNG = MediaType.parse("image/png");    public void multipartBody() {        RequestBody requestBody = new MultipartBody.Builder()                .setType(MultipartBody.FORM)                .addFormDataPart("key","Value")                .addFormDataPart("key","filename",RequestBody.create(MEDIA_TYPE_PNG,new File("")))                .build();        OkHttpClient client = new OkHttpClient();        Request request = new Request.Builder()                .url("https://api.imgur.com/3/image")                .post(requestBody)                .build();        Call call = client.newCall(request);        call.enqueue(new Callback() {            @Override            public void onFailure(Call call, IOException e) {            }            @Override            public void onResponse(Call call, Response response) throws IOException {                System.out.println(response.body().string());            }        }); }    public void cache() {        new Thread(new Runnable() {            @Override            public void run() {                try {                Cache cache = new Cache(getCacheDir(), 10 * 1024 * 1024);                OkHttpClient client = new OkHttpClient.Builder()                        .cache(cache)                        .build();                Request request = new Request.Builder()                        .url("http://publicobject.com/helloworld.txt")                        .cacheControl(CacheControl.FORCE_NETWORK)//强制走网络                        .build();                    Response response1 = client.newCall(request).execute();                    String response1Body = response1.body().string();                    System.out.println("Response 1 response:          " + response1);                    System.out.println("Response 1 cache response:    " + response1.cacheResponse());                    System.out.println("Response 1 network response:  " + response1.networkResponse());                    Response response2 = client.newCall(request).execute();                    String response2Body = response2.body().string();                    System.out.println("Response 2 response:          " + response2);                    System.out.println("Response 2 cache response:    " + response2.cacheResponse());                    System.out.println("Response 2 network response:  " + response2.networkResponse());                } catch (Exception e) {                    e.printStackTrace();                }            }        }).start();    }    OkHttpClient client = new OkHttpClient();    public void perCall(){        Request request = new Request.Builder()                .url("https://en.wikipedia.org/w/index.php")                .build();        OkHttpClient okHttpClient1 = client.newBuilder().writeTimeout(10, TimeUnit.SECONDS).build();        OkHttpClient okHttpClient2 = client.newBuilder().writeTimeout(20,TimeUnit.SECONDS).build();    }}

拦截器

public class LoggingInterceptor implements Interceptor{    @Override    //重写的方法    public Response intercept(Chain chain) throws IOException {        Request request = chain.request();        long t1 = System.nanoTime();        //logger.info(String.format("Sending request %s on %s%n%s",        // request.url(), chain.connection(), request.headers()));        Response response = chain.proceed(request);        long t2 = System.nanoTime();       // logger.info(String.format("Received response for %s in %.1fms%n%s",       // response.request().url(), (t2 - t1) / 1e6d, response.headers()));        System.out.println("t2 = " + (t2-t1));        return response;    }}

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