OkHttp网络请求详解-优快云博客

本文链接：https://blog.youkuaiyun.com/mars_liurui/article/details/97034381

Okhttp

okhttp是一个第三方类库，用于android中请求网络。
这是一个开源项目,是安卓端最火热的轻量级框架,由移动支付Square公司贡献(该公司还贡献了Picasso和LeakCanary) 。用于替代HttpUrlConnection和Apache HttpClient(android API23 里已移除HttpClient)。
1.同步get请求：开启子线程
2.同步post请求：开启子线程
3.异步get请求：不需要开启子线程
4.异步post请求：不需要开启子线程

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        tools:context=".MainActivity">
    <Button android:layout_width="match_parent"
            android:text="GET"
            android:id="@+id/bt_1"
            android:layout_height="50dp"/>
    <Button android:layout_width="match_parent"
            android:id="@+id/bt_2"
            android:text="POST"
            android:layout_height="50dp"/>
    <Button android:layout_width="match_parent"
            android:text="DOWNLOAD"
            android:id="@+id/bt_3"
            android:layout_height="50dp"/>
    <SeekBar android:layout_width="match_parent"
             android:id="@+id/seek"
             android:layout_height="50dp"/>


</LinearLayout>

public class MainActivity extends AppCompatActivity {
    Button button1,button2,button3;
    SeekBar seekBar;
    String get_url="http://www.qubaobei.com/ios/cf/dish_list.php?stage_id=1&limit=10&page=1";
    String post_url="https://www.apiopen.top/createUser?key=00d91e8e0cca2b76f515926a36db68f5";
    String downlaod_url="http://uvideo.spriteapp.cn/video/2019/0719/cc6b8cea-a97a-11e9-a3f8-90b11c479401_wpd.mp4";
    @SuppressLint("HandlerLeak")
    Handler handler=new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            if (msg.what==101){
                Toast.makeText(MainActivity.this, ""+msg.obj.toString(), Toast.LENGTH_SHORT).show();
            }else if (msg.what==102){
                Toast.makeText(MainActivity.this, ""+msg.obj.toString(), Toast.LENGTH_SHORT).show();
            }else if (msg.what==103){
                Toast.makeText(MainActivity.this, ""+msg.obj.toString(), Toast.LENGTH_SHORT).show();
            }else if (msg.what==104){
                Toast.makeText(MainActivity.this, ""+msg.obj.toString(), Toast.LENGTH_SHORT).show();
            }else if (msg.what==105){
                Toast.makeText(MainActivity.this, ""+msg.obj.toString(), Toast.LENGTH_SHORT).show();
            }else if (msg.what==106){
                Toast.makeText(MainActivity.this, ""+msg.obj.toString(), Toast.LENGTH_SHORT).show();
            }

        }
    };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button1=findViewById(R.id.bt_1);
        button2=findViewById(R.id.bt_2);
        button3=findViewById(R.id.bt_3);
        seekBar=findViewById(R.id.seek);
        button1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                OkUtils.getInstance().doGet(get_url, new MycallBack() {
                    @Override
                    public void success(String result) {
                        Message message = Message.obtain();
                        message.what=101;
                        message.obj=result;
                        handler.sendMessage(message);
                    }

                    @Override
                    public void fail(String message) {
                        Message message1 = Message.obtain();
                        message1.what=102;
                        message1.obj=message;
                        handler.sendMessage(message1);
                    }
                });
            }
        });
        button2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                HashMap<String,String> map=new HashMap<>();
                //phone=13594347817&passwd=123654
                map.put("phone","15313873723");
                map.put("passwd","123456");
                OkUtils.getInstance().doPost(post_url, map, new MycallBack() {
                    @Override
                    public void success(String result) {
                        Message message = Message.obtain();
                        message.what=103;
                        message.obj=result;
                        handler.sendMessage(message);
                    }

                    @Override
                    public void fail(String message) {
                        Message message1 = Message.obtain();
                        message1.what=104;
                        message1.obj=message;
                        handler.sendMessage(message1);
                    }
                });
            }
        });
        button3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try {
                    OkUtils.getInstance().downloadFile(downlaod_url, "/sdcard/Download/okhttp.mp4", new MyFileCallBack() {
                        @Override
                        public void success(String result) {
                            Message message1 = Message.obtain();
                            message1.what=105;
                            message1.obj=result;
                            handler.sendMessage(message1);
                        }

                        @Override
                        public void fail(String message) {
                            Message message1 = Message.obtain();
                            message1.what=106;
                            message1.obj=message;
                            handler.sendMessage(message1);
                        }

                        @Override
                        public void setMax(long max) {
                            Log.e("###",max+"");
                            seekBar.setMax((int) max);
                        }

                        @Override
                        public void setProgress(int progress) {
                            Log.e("###",progress+"");
                            seekBar.setProgress(progress);
                        }
                    });
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                }
            }
        });
    }
}

//工具类

public class OkUtils {
    private OkHttpClient client;

    private OkUtils(){
        OkHttpClient.Builder builder=new OkHttpClient.Builder();
        builder.connectTimeout(5, TimeUnit.SECONDS);
        builder.readTimeout(5,TimeUnit.SECONDS);
        client= builder.build();
    }
    private static OkUtils okUtils;

    public static OkUtils getInstance(){
        if (okUtils==null){
            synchronized (String.class){
                if (okUtils==null){
                    okUtils=new OkUtils();
                }
            }
        }
        return okUtils;
    }


    public void doGet(String url, final MycallBack mycallBack){

        Request.Builder builder=new Request.Builder();
        builder.url(url);
        Request request = builder.build();
        Call call = client.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                mycallBack.fail(e.getMessage());
            }

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

    }
    public void doPost(String url, HashMap<String,String> map, final MycallBack mycallBack){

        Request.Builder builder=new Request.Builder();

        FormBody.Builder builder1=new FormBody.Builder();
        Set<String> strings = map.keySet();
        for (String s : strings) {
            String s1 = map.get(s);
            builder1.add(s,s1);
        }
        FormBody formBody = builder1.build();
        builder.post(formBody);
        builder.url(url);
        Request request = builder.build();
        Call call = client.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                mycallBack.fail(e.getMessage());
            }

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

    }
    public void downloadFile(String url, String filepath, final MyFileCallBack myFileCallBack) throws FileNotFoundException {

        final FileOutputStream fos=new FileOutputStream(filepath);
        Request.Builder builder=new Request.Builder();
        builder.url(url);
        Request request = builder.build();
        Call call = client.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                myFileCallBack.fail(e.getMessage());
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                long max = response.body().contentLength();
                myFileCallBack.setMax(max);

                InputStream inputStream = response.body().byteStream();
                int len=0;
                byte[] bytes=new byte[1024];
                int count=0;
                while ((len=inputStream.read(bytes))!=-1){
                    count+=len;
                    fos.write(bytes,0,len);
                    myFileCallBack.setProgress(count);
                }

                myFileCallBack.success("下载完成");
            }
        });
    }


}

//接口回调
public interface MycallBack {
    public void success(String result);
    public void fail(String message);
}


public interface MyFileCallBack {
    public void success(String result);
    public void fail(String message);
    public void setMax(long max);
    public void setProgress(int progress);
}

day16_Okhttp

Okhttp