OkHttpUtils用法以及jar包

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package util;

import com.google.gson.Gson;

import java.io.IOException;
import java.util.Map;

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

/**
* Created by Sunyubo on 2016/11/3.
*/

public class OkHttpUtils {

private static OkHttpClient mClient;public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8");private OkHttpUtils() {}public static OkHttpClient getOkHttpClient() {    if (mClient == null) {        HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor();        loggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);        mClient = new OkHttpClient.Builder()                .addInterceptor(loggingInterceptor)

// .addInterceptor(new Interceptor() {
// @Override
// public Response intercept(Chain chain) throws IOException {
// Request request = chain.request();
// request = request.newBuilder()
// .addHeader(“key”,”value”)
// .build();
// return chain.proceed(request);
// }
// })
.build();
}
return mClient;
}

/** * 异步post  参数为对象 * * @param url * @param obj * @param callback */public static void post(String url, Object obj, Callback callback) {    post(url, new Gson().toJson(obj), callback);}/** * 异步post  参数为json * * @param url * @param json * @param callback */public static void post(String url, String json, Callback callback) {    RequestBody body = RequestBody.create(JSON, json);    Request request = new Request.Builder()            .url(url)            .post(body)            .build();    getOkHttpClient().newCall(request).enqueue(callback);}/** * 异步post 参数为Map * * @param url * @param map * @param callback */public static void post(String url, Map<String, String> map, Callback callback) {    FormBody.Builder builder = new FormBody.Builder();    for (String key : map.keySet())        builder.add(key, map.get(key));    RequestBody body = builder.build();    Request request = new Request.Builder()            .url(url)            .post(body)            .build();    getOkHttpClient().newCall(request).enqueue(callback);}/** * 异步get * * @param url * @return */public static void get(String url, Callback callback) {    Request request = new Request.Builder()            .url(url)            .build();    getOkHttpClient().newCall(request).enqueue(callback);}/** * 同步get * * @param url * @return */public static String get(String url) {    Request request = new Request.Builder()            .url(url)            .build();    try {        Call call = getOkHttpClient().newCall(request);        Response response = call.execute();        if (response.isSuccessful()) {            return response.body().string();        } else {            return null;        }    } catch (IOException e) {        e.printStackTrace();    }    return null;}

}
//所用的包
compile ‘com.squareup.okhttp3:okhttp:3.4.1’
compile ‘com.squareup.okhttp3:logging-interceptor:3.4.1’
compile ‘com.google.code.gson:gson:2.8.0’

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