即拿即用-一个快速上手的网络请求框架（Retrofit+okHttp3）

来源：互联网发布：恢复出厂设置数据恢复编辑：程序博客网时间：2024/06/08 12:38

很多时候，我们要测试某个网络请求，这时候就得有一个快速上手的网络请求框架方便使用。

GitHub链接：https://github.com/mocn26169/QuickHttpRequest

使用步骤

下面是一个Retrofit+okHttp3的网络请求的例子，使用步骤如下：

请求链接：

http://blog.csdn.net/iromkoear?viewmode=contents

使用方式：

1、在MainActivity里面修改服务器地址和参数

 /**     * 服务器地址(请手动修改1)     */    public static String BASEURL = "http://blog.csdn.net/";

    /**     * 请求的参数实体(请手动修改2)     */    public class MyParams {        /**         * 参数         */        public String viewmode;    }

2、在IHttpInfo里面修改接口参数

  /**     * 接口参数(请手动修改3)     */    @POST("/iromkoear")    Call<String> getResult(@Query("viewmode") String viewmode);

3、在MainActivity开始请求

 MyParams myParams = new MyParams();        myParams.viewmode ="contents";        Call<String> infoCall = httpInfoModel.getIHttpInfo().getResult(myParams.viewmode);        infoCall.enqueue(new Callback<String>() {            @Override            public void onResponse(Call<String> call, Response<String> response) {                String result = response.body().trim();                Log.i(TAG, "请求成功！结果如下：");                Log.i(TAG, result);            }            @Override            public void onFailure(Call<String> call, Throwable t) {                Log.i(TAG, "请求失败！");            }        });

只要3步就可以完成一个简单的请求

这里写图片描述

详细代码

1、在项目的build里面添加：

dependencies {    compile fileTree(dir: 'libs', include: ['*.jar'])    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {        exclude group: 'com.android.support', module: 'support-annotations'    })    compile 'com.android.support:appcompat-v7:25.0.0'    testCompile 'junit:junit:4.12'    compile 'com.squareup.okhttp3:okhttp:3.3.1'    compile 'com.squareup.retrofit2:retrofit:2.1.0'    compile 'com.squareup.retrofit2:converter-gson:2.1.0'    compile 'com.squareup.retrofit2:adapter-rxjava:2.1.0'    compile 'io.reactivex:rxandroid:1.1.0'    compile 'io.reactivex:rxjava:1.1.0'    compile 'com.squareup.okhttp3:logging-interceptor:3.3.1'}

2、AndroidMainifest文件

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"          package="com.bourne.quickhttprequest">    <!-- 网络请求权限 -->    <uses-permission android:name="android.permission.INTERNET"/>    <!-- 在SDCard中创建与删除文件权限 -->    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>    <!-- 往SDCard写入数据权限 -->    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>    <!-- 往SDCard读取数据权限 -->    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>    <application        android:allowBackup="true"        android:icon="@mipmap/ic_launcher"        android:label="@string/app_name"        android:roundIcon="@mipmap/ic_launcher_round"        android:supportsRtl="true"        android:theme="@style/AppTheme">        <activity android:name=".MainActivity">            <intent-filter>                <action android:name="android.intent.action.MAIN"/>                <category android:name="android.intent.category.LAUNCHER"/>            </intent-filter>        </activity>    </application></manifest>

3、MainActivity

package com.bourne.quickhttprequest;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.view.View;import retrofit2.Call;import retrofit2.Callback;import retrofit2.Response;public class MainActivity extends AppCompatActivity {    /**     * Log标志     */    private String TAG;    /**     * 服务器地址(请手动修改1)     */    public static String BASEURL = "http://blog.csdn.net/";    /**     * 网络请求     */    private HttpInfoModel httpInfoModel;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        TAG = getLocalClassName();        //初始化网络请求        httpInfoModel = HttpInfoModel.getInstance(this);    }    /**     * 开始请求     */    public void startHttpRequest(View view) {        Call<String> infoCall = httpInfoModel.getIHttpInfo().getResult("contents");        infoCall.enqueue(new Callback<String>() {            @Override            public void onResponse(Call<String> call, Response<String> response) {                String result = response.body().trim();                Log.i(TAG, "请求成功！结果如下：");                Log.i(TAG, result);            }            @Override            public void onFailure(Call<String> call, Throwable t) {                Log.i(TAG, "请求失败！");            }        });    }}

4、布局文件activity_main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="com.bourne.quickhttprequest.MainActivity">    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="start"        android:onClick="startHttpRequest" /></LinearLayout>

5、新建一个类HttpInfoModel，是一个网络请求单例

package com.bourne.quickhttprequest;import android.content.Context;/** * 网络请求单例 */public class HttpInfoModel {    private static HttpInfoModel famousInfoModel;    private IHttpInfo mIHttpInfo;    public HttpInfoModel(Context context) {        mIHttpInfo = RetrofitWrapper.getInstance(MainActivity.BASEURL).create(IHttpInfo.class);    }    public static HttpInfoModel getInstance(Context context) {        if (famousInfoModel == null) {            famousInfoModel = new HttpInfoModel(context);        }        return famousInfoModel;    }    public IHttpInfo getIHttpInfo() {        return mIHttpInfo;    }}

6、新建一个类IHttpInfo，请求参数接口

package com.bourne.quickhttprequest;import retrofit2.Call;import retrofit2.http.POST;import retrofit2.http.Query;/** * 请求参数接口 */public interface IHttpInfo {    /**     * 接口参数(请手动修改2)     */    @POST("/iromkoear")    Call<String> getResult(@Query("viewmode") String viewmode);}

7、新建一个类RetrofitWrapper，是网络请求的主体

package com.bourne.quickhttprequest;import android.content.Context;import android.util.Log;import com.google.gson.Gson;import com.google.gson.GsonBuilder;import okhttp3.OkHttpClient;import okhttp3.logging.HttpLoggingInterceptor;import retrofit2.Retrofit;/** * 网络请求的主体 */public class RetrofitWrapper {    private static RetrofitWrapper instance;    private Context mContext;    private Retrofit mRetrofit;    public RetrofitWrapper(String url) {        OkHttpClient.Builder builder = new OkHttpClient.Builder();        HttpLoggingInterceptor logging = new HttpLoggingInterceptor(new HttpLoggingInterceptor.Logger() {            @Override            public void log(String message) {                // 打印Log                Log.i("OkHttp", message);            }        });        logging.setLevel(HttpLoggingInterceptor.Level.BODY);        OkHttpClient client = builder.addInterceptor(logging)                .build();        Gson gson = new GsonBuilder()                .setLenient()                .create();        mRetrofit = new Retrofit.Builder().baseUrl(url)//                .addConverterFactory(GsonConverterFactory.create(gson))                .addConverterFactory(new ToStringConverterFactory())//                .addCallAdapterFactory(RxJavaCallAdapterFactory.create())                .client(client)                .build();    }    public static RetrofitWrapper getInstance(String url) {        if (null == instance) {            synchronized (RetrofitWrapper.class) {                instance = new RetrofitWrapper(url);            }        }        return instance;    }    public <T> T create(final Class<T> service) {        return mRetrofit.create(service);    }}

8、我们还要一个类来将结果转为String，新建一个类ToStringConverterFactory

package com.bourne.quickhttprequest;import java.io.IOException;import java.lang.annotation.Annotation;import java.lang.reflect.Type;import okhttp3.MediaType;import okhttp3.RequestBody;import okhttp3.ResponseBody;import retrofit2.Converter;import retrofit2.Retrofit;/** * 此类将结果转为String */public class ToStringConverterFactory extends Converter.Factory {    private static final MediaType MEDIA_TYPE = MediaType.parse("text/plain");    @Override    public Converter<ResponseBody, ?> responseBodyConverter(Type type, Annotation[] annotations, Retrofit retrofit) {        if (String.class.equals(type)) {            return new Converter<ResponseBody, String>() {                @Override                public String convert(ResponseBody value) throws IOException {                    return value.string();                }            };        }        return null;    }    @Override    public Converter<?, RequestBody> requestBodyConverter(Type type, Annotation[] parameterAnnotations,                                                          Annotation[] methodAnnotations, Retrofit retrofit) {        if (String.class.equals(type)) {            return new Converter<String, RequestBody>() {                @Override                public RequestBody convert(String value) throws IOException {                    return RequestBody.create(MEDIA_TYPE, value);                }            };        }        return null;    }}

如果要用自带的GsonConverterFactory自动转换成gson对象也行

        mRetrofit = new Retrofit.Builder().baseUrl(url)               .addConverterFactory(GsonConverterFactory.create(gson))             //.addConverterFactory(new ToStringConverterFactory())    //.addCallAdapterFactory(RxJavaCallAdapterFactory.create())                .client(client)                .build();

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