OKhttp基本使用

目录

    1.Get请求(同步和异步)

    2.POST请求表单(key-value)

    3.POST请求提交(JSON/String/文件等)

    4.文件下载

    5.请求超时设置

说明:基于okhttp3.8.0


1.Get请求(同步)


2、Get请求(异步)


3、post请求表单


4、post提交json数据


5、post提交file文件


6、文件下载


7、超时设置


8、源码

public class MainActivityextends AppCompatActivity {

        private static OkHttpClientclient =new OkHttpClient();

        private Stringurl ="";

        private Requestrequest;

        /*

        * 超时设置* 

        */

        static {

                client.newBuilder().connectTimeout(10, TimeUnit.SECONDS);

                client.newBuilder().readTimeout(10,TimeUnit.SECONDS);

                client.newBuilder().writeTimeout(10,TimeUnit.SECONDS);

        }

        private TextViewtext;

        @Override

        protected void onCreate(Bundle savedInstanceState) {

                super.onCreate(savedInstanceState);

                setContentView(R.layout.activity_main);

                text = ((TextView) findViewById(R.id.textView));

        }

        /*

        * 同步Get

        * */

        public void syncGet(View view) {

                new Thread(new Runnable() {

                        @Override

                        public void run() {

                                try {

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

                                        Response response =client.newCall(request).execute();

                                        final String message = response.body().string();

                                        runOnUiThread(new Runnable() {

                                                @Override

                                                public void run() {

                                                        text.setText(message);

                                                }

                                        });

                                }catch (IOException e) {

                                        e.printStackTrace();

                                }

                        }

                }).start();

        }

        /*

        * 异步Get

        * */

        public void asyncGet(View view) {

                new Thread(new Runnable() {

                        @Override

                        public void run() {

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

                                client.newCall(request).enqueue(new Callback() {

                                        @Override

                                        public void onFailure(Call call, IOException e) {

                                        }

                                        @Override

                                        public void onResponse(Call call,final Response response)throws IOException {

                                                if (response.isSuccessful()) {

                                                        runOnUiThread(new Runnable() {

                                                                @Override

                                                                public void run() {

                                                                        String string =null;

                                                                        try {

                                                                                string =response.body().string();

                                                                                text.setText(string);

                                                                        }catch (IOException e) {

                                                                                e.printStackTrace();

                                                                        }

                                                                        Log.d("MainActivity", string);

                                                                }

                                                        });

                                                }

                                        }

                                });

                        }

                }).start();

        }

        /*

        * post表单提交* */

        public void postForm(View view) {

                //表单请求体

                FormBody body =new FormBody.Builder().add("type","1").build();

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

                new Thread(new Runnable() {

                        @Override

                        public void run() {

                                client.newCall(request).enqueue(new Callback() {

                                        @Override

                                        public void onFailure(Call call, IOException e) {

                                        }

                                        @Override

                                        public void onResponse(Call call, Response response)throws IOException {

                                                if (response.isSuccessful()) {

                                                        text.setText("提交成功");

                                                }

                                        }

                                });

                        }

                }).start();

        }

        /*

        * 下载* */

        public void download(View view) {

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

                new Thread(new Runnable() {

                        @Override

                        public void run() {

                                client.newCall(request).enqueue(new Callback() {

                                        @Override

                                        public void onFailure(Call call, IOException e) {

                                        }

                                        @Override

                                        public void onResponse(Call call, Response response)throws IOException {

                                                if (response.isSuccessful()) {

                                                        //转换字节流

                                                        InputStream inputStream = response.body().byteStream();

                                                        //文件输出流

                                                        FileOutputStream outputStream =new FileOutputStream(new File("sdcard/xxx.txt"));

                                                        //字节数组

                                                        byte[] bytes =new byte[2048];

                                                        int len =0;

                                                        //循环读

                                                        while ((len = inputStream.read(bytes)) != -1){

                                                                //写文件

                                                                outputStream.write(bytes,0,len);

                                                        }

                                                        //关闭流

                                                        outputStream.flush();

                                                }

                                        }

                                });

                        }

                }).start();

        }

        /*

        * 提交json

        * */

        public void postJson(View view) {

                //设置类型

                MediaType jsonType = MediaType.parse("application/json; charset=utf-8");

                String json ="{\\\"username\\\":\\\"lisi\\\",\\\"nickname\\\":\\\"李四\\\"}";

                RequestBody body = RequestBody.create(jsonType,json);

                //创建request

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

                new Thread(new Runnable() {

                        @Override

                        public void run() {

                                client.newCall(request).enqueue(new Callback() {

                                        @Override

                                        public void onFailure(Call call, IOException e) {

                                        }

                                        @Override

                                        public void onResponse(Call call, Response response)throws IOException {

                                        }

                                });

                        }

                }).start();

        }

        /*

        * 提交文件* */

        public void postFile(View view) {

                //设置类型

                MediaType fileType = MediaType.parse("File/*");

                //文件

                File file =new File("path");

                RequestBody body = RequestBody.create(fileType,file);

                //创建request

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

                new Thread(new Runnable() {

                        @Override

                        public void run() {

                                client.newCall(request).enqueue(new Callback() {

                                        @Override

                                        public void onFailure(Call call, IOException e) {

                                        }

                                        @Override

                                        public void onResponse(Call call, Response response)throws IOException {

                                        }

                                });

                        }

                }).start();

        }

}

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