Android笔记-使用okhttp3库发送http请求

分手后的思念是犯贱 2022-09-04 01:55 200阅读 0赞

build.gradle新加：

implementation 'com.squareup.okhttp3:okhttp:3.8.0'

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxNzg0NDI3NjE_size_16_color_FFFFFF_t_70][]

在AndroidManifest.xml添加权限

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

源码如下：

HttpRequest.java

package com.example.myclient.http;
    
    import okhttp3.Call;
    import okhttp3.Callback;
    import okhttp3.OkHttpClient;
    import okhttp3.Request;
    
    public class HttpRequest {
    
        private Call mCall;
    
        public HttpRequest(String url) {
    
            OkHttpClient client = new OkHttpClient();
            Request request = new Request
                    .Builder()
                    .get()
                    .url(url)
                    .build();
            mCall = client.newCall(request);
        }
    
        public void request(Callback callback){
    
            if(mCall != null){
    
                if(mCall.isExecuted()){
    
                    mCall.clone().enqueue(callback);
                }
                else{
    
                    mCall.enqueue(callback);
                }
            }
        }
    }

MainActivity.java

package com.example.myclient;
    
    import android.os.Bundle;
    
    import com.example.myclient.http.HttpRequest;
    import com.google.android.material.floatingactionbutton.FloatingActionButton;
    import com.google.android.material.snackbar.Snackbar;
    
    import androidx.appcompat.app.AppCompatActivity;
    import androidx.appcompat.widget.Toolbar;
    
    import android.util.Log;
    import android.view.View;
    import android.view.Menu;
    import android.view.MenuItem;
    
    import java.io.IOException;
    
    import okhttp3.Call;
    import okhttp3.Callback;
    import okhttp3.Response;
    
    public class MainActivity extends AppCompatActivity {
    
        private static final String URL = "http://192.168.20.59/";
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            Toolbar toolbar = findViewById(R.id.toolbar);
            setSupportActionBar(toolbar);
    
            FloatingActionButton fab = findViewById(R.id.fab);
            fab.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                            .setAction("Action", null).show();
                }
            });
    
            final HttpRequest request = new HttpRequest(URL);
            findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
    
                @Override
                public void onClick(View v) {
    
                    request.request(new Callback() {
                        @Override
                        public void onFailure(Call call, IOException e) {
    
                            Log.e("error", "请求失败");
                        }
    
                        @Override
                        public void onResponse(Call call, Response response) throws IOException {
    
                            Log.e("success", "请求成功：" + response.body().string());
                        }
                    });
                }
            });
        }
    
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            // Inflate the menu; this adds items to the action bar if it is present.
            getMenuInflater().inflate(R.menu.menu_main, menu);
            return true;
        }
    
        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
            // Handle action bar item clicks here. The action bar will
            // automatically handle clicks on the Home/Up button, so long
            // as you specify a parent activity in AndroidManifest.xml.
            int id = item.getItemId();
    
            //noinspection SimplifiableIfStatement
            if (id == R.id.action_settings) {
                return true;
            }
    
            return super.onOptionsItemSelected(item);
        }
    }

源码打包下载地址：

[https://github.com/fengfanchen/AndroidReverse/tree/master/OkHttp3Demo][https_github.com_fengfanchen_AndroidReverse_tree_master_OkHttp3Demo]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxNzg0NDI3NjE_size_16_color_FFFFFF_t_70]: /images/20220829/94a404d4c2b34409a69f1ee00b0ea3c0.png
[https_github.com_fengfanchen_AndroidReverse_tree_master_OkHttp3Demo]: https://github.com/fengfanchen/AndroidReverse/tree/master/OkHttp3Demo