mvc

最新推荐文章于 2024-10-22 13:28:23 发布

原创最新推荐文章于 2024-10-22 13:28:23 发布 · 207 阅读

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CC 4.0 BY-SA版权

本文详细介绍了使用OkHttp进行网络请求的方法，包括GET和POST请求的实现，上传和下载文件的功能，以及如何使用拦截器进行日志记录和添加请求头。通过具体的代码示例展示了如何在Android应用中集成OkHttp，实现数据的获取和处理。

okHttp 拦截器

可以拦截到我们请求、返回的信息，之后再放入OkHttpClient.Builder()对象中
第一种 httploggingInterceptor
第二种 Intercept

 HttpLoggingInterceptor httpLoggingInterceptor = new HttpLoggingInterceptor();
        httpLoggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);

        Interceptor interceptor = new Interceptor() {
            @Override
            public Response intercept(Chain chain) throws IOException {
                Request build = chain.request().newBuilder().header("token", "123456").build();
                return chain.proceed(build);
            }
        };

mvc 三层关系

首先是定义一个OKHttpUtils 工具类在其中写上需要调用的方法，（上传下载，get/post），然后定义一个接口MyModel，接口中写方法的参数与工具类的方法参数一致，之后再创建一个类去实现MyModel，重写接口中的方法，之后直接new这个类直接调用方法即可

代码

OkHttpUtils

package com.example.paa.HttpUtils;

import android.os.Environment;
import android.os.Handler;
import android.widget.Toast;

import com.example.paa.MyListener.OkListener;
import com.example.paa.Share;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.Interceptor;
import okhttp3.MediaType;
import okhttp3.MultipartBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
import okhttp3.ResponseBody;
import okhttp3.logging.HttpLoggingInterceptor;

public class OkHttpUtils {
    private static OkHttpUtils okHttpUtils = null;
    private OkHttpClient client;
    private Handler handler = new Handler();

    private OkHttpUtils(){

        HttpLoggingInterceptor httpLoggingInterceptor = new HttpLoggingInterceptor();
        httpLoggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);

        Interceptor interceptor = new Interceptor() {
            @Override
            public Response intercept(Chain chain) throws IOException {
                Request build = chain.request().newBuilder().header("token", "123456").build();
                return chain.proceed(build);
            }
        };

        client = new OkHttpClient.Builder()
                .readTimeout(20, TimeUnit.SECONDS)
                .connectTimeout(20,TimeUnit.SECONDS)
                .addInterceptor(interceptor)
                .addInterceptor(httpLoggingInterceptor)
                .build();
    }


    public static OkHttpUtils getInstance(){
        if (okHttpUtils == null) {
            synchronized (Object.class){
                if (okHttpUtils == null) {
                    okHttpUtils = new OkHttpUtils();
                }
            }
        }

        return okHttpUtils;
    }

    public void doPost(String url, Map<String,String> map, final OkListener listener){

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

        Set<Map.Entry<String, String>> entries = map.entrySet();
        for (Map.Entry<String, String> stringEntry : entries) {
            builder.add(stringEntry.getKey(),stringEntry.getValue());
        }

        Request request = new Request.Builder()
                .header("Connection-Type","application/json")
                .header("Connection","keep-alive")
                .url(url)
                .post(builder.build())
                .build();

        Call call = client.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                final String message = e.getMessage();
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        listener.getError(message);
                    }
                });
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                ResponseBody body = response.body();
                final String string = body.string();
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        listener.getMessage(string);
                    }
                });
            }
        });
    }

    public void doGet(String url, final OkListener listener){

        Request request = new Request.Builder()
                .url(url)
                .get()
                .header("Connection", "keep-alive")
                .header("Connection-Type", "application/json")
                .build();

        Call call = client.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                final String message = e.getMessage();
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        listener.getMessage(message);
                    }
                });
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                ResponseBody body = response.body();
                final String string = body.string();
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        listener.getMessage(string);
                    }
                });
            }
        });
    }

    public void downLoad(String url, final File file, final OkListener listener){

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

        Call call = client.newCall(request);

        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                final String message = e.getMessage();
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        listener.getError(message);
                    }
                });
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                ResponseBody body = response.body();
                InputStream inputStream = body.byteStream();
                byte[] b = new byte[1024];
                int len = 0;

//                File directory = Environment.getExternalStorageDirectory();
                FileOutputStream fos = new FileOutputStream(file);
                while((len = inputStream.read(b)) != -1){
                    fos.write(b, 0, len);
                }
                inputStream.close();
                fos.close();
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        listener.getMessage("下载成功！");
                    }
                });

            }
        });

    }

    public void upLoad(String url, String name, String type, File path, final OkListener listener){

        RequestBody requestBody = RequestBody.create(MediaType.parse(type), path);

        MultipartBody.Builder addFormDataPart = new MultipartBody.Builder()
                .setType(MultipartBody.FORM)
                .addFormDataPart("file", name, requestBody);

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

        Call call = client.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, final IOException e) {
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        listener.getError(e.getMessage());
                    }
                });
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                ResponseBody body = response.body();
                final String string = body.string();
                handler.post(new Runnable() {
                        @Override
                        public void run() {
                            listener.getMessage(string);
                        }
                    });
            }
        });

    }
}

MyModel 接口

package com.example.paa.Model;

import com.example.paa.MyListener.OkListener;

import java.io.File;
import java.util.Map;

public interface MyModel {
    void Post(String url, Map<String,String> map, OkListener listener);
    void Get(String url,OkListener listener);
    void downLoad(String url, File file, OkListener listener);
    void upLoad(String url,File path,String name,String tyep,OkListener listener);
}

MyModelmpl 实现类

package com.example.paa.Model;

import com.example.paa.HttpUtils.OkHttpUtils;
import com.example.paa.MyListener.OkListener;

import java.io.File;
import java.util.Map;

public class MyModelImpl implements MyModel{
    private OkHttpUtils okHttpUtils = OkHttpUtils.getInstance();
    @Override
    public void Post(String url, Map<String, String> map, OkListener listener) {
        okHttpUtils.doPost(url,map,listener);
    }

    @Override
    public void Get(String url, OkListener listener) {
        okHttpUtils.doGet(url,listener);
    }

    @Override
    public void downLoad(String url, File file, OkListener listener) {
        okHttpUtils.downLoad(url,file,listener);
    }


    @Override
    public void upLoad(String url, File path, String name, String type, OkListener listener) {
        okHttpUtils.upLoad(url,path,name,type,listener);
    }
}

接下来就是Activity中的代码了

登录Activity

package com.example.paa;

import android.Manifest;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.example.paa.HttpUtils.OkHttpUtils;
import com.example.paa.JavaBean.KeyBean;
import com.example.paa.JavaBean.RegisterBean;
import com.example.paa.Model.MyModelImpl;
import com.example.paa.MyListener.OkListener;
import com.google.gson.Gson;

import java.util.HashMap;
import java.util.Map;

public class MainActivity extends AppCompatActivity {

    private OkHttpUtils instance;
    private MyModelImpl myModel;

    private String path = "https://www.apiopen.top/createUserKey";
    private String login_url = "https://www.apiopen.top/login";
    private String appKey = "";
    private EditText editUser;
    private EditText editPwd;
    private Button buttonLogins;
    private Button butToRegister;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
            String[] str = {Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.WRITE_EXTERNAL_STORAGE};
            requestPermissions(str,100);
        }

        instance = OkHttpUtils.getInstance();
        myModel = new MyModelImpl();
        initView();
    }

    private void initView() {
        editUser = findViewById(R.id.edit_user);
        editPwd = findViewById(R.id.edit_pwd);
        buttonLogins = findViewById(R.id.button_logins);
        butToRegister = findViewById(R.id.but_To_register);

        getAppKey();
    }

    private void getAppKey() {
        //?appId=com.aew.wlsj&passwd=123456
        Map<String, String> map = new HashMap<>();
        map.put("appId", "com.pan.w");
        map.put("passwd", "123321");
        myModel.Post(path, map, new OkListener() {
            @Override
            public void getError(String error) {

            }

            @Override
            public void getMessage(String msg) {
                KeyBean keyBean = new Gson().fromJson(msg, KeyBean.class);
                appKey = keyBean.getData().getAppkey();
                Toast.makeText(MainActivity.this, "" + appKey, Toast.LENGTH_SHORT).show();
            }
        });

        buttonLogins.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String pwd = editPwd.getText().toString().trim();
                String user = editUser.getText().toString().trim();

                //?key=00d91e8e0cca2b76f515926a36db68f5&phone=13594347817&passwd=123456
                Map<String,String> map = new HashMap<>();
                map.put("key",appKey);
                map.put("phone",user);
                map.put("passwd",pwd);
                myModel.Post(login_url, map, new OkListener() {
                    @Override
                    public void getError(String error) {
                        Toast.makeText(MainActivity.this, "未知错误:"+error, Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void getMessage(String msg) {
                        RegisterBean registerBean = new Gson().fromJson(msg, RegisterBean.class);
                        Toast.makeText(MainActivity.this, ""+registerBean, Toast.LENGTH_SHORT).show();
                        if(registerBean.getCode() == 200){
                            Toast.makeText(MainActivity.this, "登陆成功！", Toast.LENGTH_SHORT).show();
                            Intent intent = new Intent(MainActivity.this, ShowActivity.class);
                            startActivity(intent);
                            finish();
                        }else{
                            Toast.makeText(MainActivity.this, "用户名或密码错误", Toast.LENGTH_SHORT).show();
                        }
                    }
                });

            }
        });


        butToRegister.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(appKey.equals("")){
                    Toast.makeText(MainActivity.this, "系统繁忙，请稍后"+"<"+appKey+">", Toast.LENGTH_SHORT).show();
                    return;
                }
                Intent intent = new Intent(MainActivity.this, RegisterActivity.class);
                intent.putExtra("appKey",appKey);

                startActivity(intent);
            }
        });
    }
}

注册页面

package com.example.paa;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.example.paa.JavaBean.RegisterBean;
import com.example.paa.Model.MyModelImpl;
import com.example.paa.MyListener.OkListener;
import com.google.gson.Gson;

import java.util.HashMap;
import java.util.Map;

public class RegisterActivity extends AppCompatActivity {

    private EditText editReUser;
    private EditText editRePwd;
    private Button butReRegister;

    private String appKey = "";
    //资源
    private String post_url = "https://www.apiopen.top/createUser";
    //mvc
    private MyModelImpl myModel;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);
        Intent intent = getIntent();
        appKey = intent.getStringExtra("appKey");
        Toast.makeText(this, ""+appKey, Toast.LENGTH_SHORT).show();

        myModel = new MyModelImpl();

        initView();
    }

    private void initView() {
        editReUser = findViewById(R.id.edit_re_user);
        editRePwd = findViewById(R.id.edit_re_pwd);
        butReRegister = findViewById(R.id.but_re_register);

        butReRegister.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String user = editReUser.getText().toString().trim();
                String pwd = editRePwd.getText().toString().trim();
                //?key=00d91e8e0cca2b76f515926a36db68f5&phone=13594347817&passwd=123654
                Map<String,String> map = new HashMap<>();
                map.put("key",appKey);
                map.put("phone",user);
                map.put("passwd",pwd);
                Log.i("---", "onClick: "+map.toString());
                myModel.Post(post_url, map, new OkListener() {
                    @Override
                    public void getError(String error) {
                        Toast.makeText(RegisterActivity.this, "未知原因"+error, Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void getMessage(String msg) {
                        RegisterBean registerBean = new Gson().fromJson(msg, RegisterBean.class);
                        Log.i("---", "getMessage: "+registerBean.toString());
                        if(registerBean.getCode() == 200){
                            Toast.makeText(RegisterActivity.this, "注册成功！", Toast.LENGTH_SHORT).show();
                            Intent intent = new Intent(RegisterActivity.this, MainActivity.class);
                            startActivity(intent);
                            finish();
                        }else{
                            Toast.makeText(RegisterActivity.this, "此用户已被注册！", Toast.LENGTH_SHORT).show();
                        }
                    }
                });

            }
        });
    }
}

展示抖音数据页面及上传下载

package com.example.paa;

import android.Manifest;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;

import com.example.paa.JavaBean.ShowBean;
import com.example.paa.Model.MyModelImpl;
import com.example.paa.MyAdapter.ShowAdapter;
import com.example.paa.MyListener.OkListener;
import com.google.gson.Gson;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class ShowActivity extends AppCompatActivity {

    private static final String TAG = "---";

    private ListView listShow;
    private MyModelImpl myModel;
    //上传服务器的路径
    private String upLoad_url = "http://192.168.43.79/hfs/";
    private int start = 0;
    private int end = 0;

    private String data_url = "https://www.apiopen.top/satinApi";
    private List<ShowBean.DataBean> totalList = new ArrayList<>();
    private List<String> nameList = new ArrayList<>();
    //适配器
    private ShowAdapter adapter;
    //搞事情
    private Handler handler = new Handler();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_show);

        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
            String[] str = {Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.WRITE_EXTERNAL_STORAGE};
            requestPermissions(str,100);
        }

        myModel = new MyModelImpl();
        initView();
    }

    private void initView() {
        listShow = findViewById(R.id.list_show);

        getData();
        intoListView();

    }

    private void intoListView() {

        listShow.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Share.index = position;
                downLoad(position);
            }
        });

        listShow.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
                if(totalList.get(position).getVideouri().equals("") ){
                    Toast.makeText(ShowActivity.this, "此视频可能不存在或者已被删除！", Toast.LENGTH_SHORT).show();
                    return false;
                }

                upLoad(position);

                return true;
            }
        });

    }

    private void upLoad(final int position) {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("提示信息");
        builder.setMessage("确定要上传本地的该视频吗?");
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                File directory = Environment.getExternalStorageDirectory();
                File file = new File(directory, nameList.get(position));
                myModel.upLoad(upLoad_url, file, nameList.get(position), "media/mp4", new OkListener() {
                    @Override
                    public void getError(String error) {
                        Toast.makeText(ShowActivity.this, ""+error, Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void getMessage(String msg) {
                        Toast.makeText(ShowActivity.this, ""+msg, Toast.LENGTH_SHORT).show();
                    }
                });
            }
        });

        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {

            }
        });

        AlertDialog alertDialog = builder.create();
        alertDialog.show();

    }
    //下载方法
    private void downLoad(final int position) {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("提示信息");
        builder.setMessage("确定要下载内容所含视频吗?");
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                if(totalList.get(position).getVideouri().equals("") ){
                    Toast.makeText(ShowActivity.this, "此视频可能不存在或者已被删除！", Toast.LENGTH_SHORT).show();
                    return;
                }

                File directory = Environment.getExternalStorageDirectory();
                File file = new File(directory, nameList.get(position));
                if(file.exists()){
                    Toast.makeText(ShowActivity.this, "下载过了", Toast.LENGTH_SHORT).show();
                    return;
                }

                myModel.downLoad(totalList.get(position).getVideouri(), file, new OkListener() {
                    @Override
                    public void getError(String error) {
                        Toast.makeText(ShowActivity.this, ""+error, Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void getMessage(String msg) {
                        Toast.makeText(ShowActivity.this, ""+msg, Toast.LENGTH_SHORT).show();
                    }
                });
            }
        });

        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {

            }
        });

        AlertDialog alertDialog = builder.create();
        alertDialog.show();
    }

    private void getData() {
        //?type=1&page=2
        final Map<String,String> map = new HashMap<>();
        map.put("type","1");
        map.put("page","2");

        myModel.Post(data_url, map, new OkListener() {
            @Override
            public void getError(String error) {
                Toast.makeText(ShowActivity.this, "未知错误"+error, Toast.LENGTH_SHORT).show();
            }

            @Override
            public void getMessage(String msg) {
                ShowBean showBean = new Gson().fromJson(msg, ShowBean.class);
                totalList = showBean.getData();
                for (int i = 0; i < totalList.size(); i++) {
                    nameList.add("FunnyVideo"+i+".mp4");
                }
                Log.i("---", "intoListView: "+totalList.toString());
                adapter = new ShowAdapter(totalList,ShowActivity.this);
                listShow.setAdapter(adapter);
            }
        });
    }
}