OkHttp简易封装

import android.os.Handler;
import android.os.Message;

import com.brother.sealmanager.common.Logger;//另一篇博客[Log类](http://blog.csdn.net/vadonmo/article/details/78918665)

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

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

/**
 * Created by vadon on 2017/12/25.
 */

public class OkHttpHelper {
    private final static int CONNECT_TIMEOUT = 60;
    private final static int READ_TIMEOUT = 100;
    private final static int WRITE_TIMEOUT = 60;
    private static final String TAG = "---";
    private Message msg;
    private static OkHttpHelper httpHelper = null;

    private OkHttpHelper() {
    }

    public static OkHttpHelper getInstance() {
        if (httpHelper == null) httpHelper = new OkHttpHelper();
        return httpHelper;
    }

    public void getConn(String url, final Handler handler, final String type) {
        //创建okhttpclient对象
        OkHttpClient client = new OkHttpClient();
        setTimeOut(client);
        //根据请求url创建一个request对象
        Request request = new Request.Builder().url(url).build();
        //根据request对象发起get同步http请求 execute 是同步请求，会阻塞线程
        //Response response = client.newCall(request).execute();
        //根据request对象发起get异步http请求 enqueue是异步请求方法,不会造成线程阻塞
        msg = new Message();
        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                msg.what = 0x2;//网络请求失败
                msg.obj = e.toString();
                handler.sendMessage(msg);
                call.cancel();
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                if (response.isSuccessful()) {
                    switch (type) {
                        case "String":
                            String result = response.body().string();
                            msg.obj = result;
                            break;
                        case "InputStream":
                            InputStream inputStream = response.body().byteStream();//可用于下载文件
                            msg.obj = inputStream;
                            break;
                        case "Byte":
                            byte[] bytes = response.body().bytes();
                            msg.obj = bytes;
                            break;
                        default:
                            String _default = response.body().string();
                            msg.obj = _default;
                            break;
                    }
                    msg.what = 0x1;//网络请求成功
                    handler.sendMessage(msg);
                }
            }
        });
    }

    public void postConn(String url, Map<String, String> paramMap, final Handler handler, final String type) {
        //创建okhttpclient对象
        OkHttpClient client = new OkHttpClient();
        setTimeOut(client);
        Request request = buildPostRequest(url, map2Params(paramMap));
        msg = new Message();
        client.newCall(request).enqueue(new Callback() {

            @Override
            public void onFailure(Call call, IOException e) {
                Logger.e(TAG, "onResponse--type-onFailure========");
                msg.what = 0x1;//网络请求失败
                msg.obj = e.toString();
                handler.sendMessage(msg);
                call.cancel();
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                Logger.e(TAG, "onResponseresponse.code()=============" + response.code());
                Logger.e(TAG, "onResponse--typeisSuccessful========" + response.isSuccessful());
                if (response.isSuccessful()) {
                    Logger.e(TAG, "onResponse--typeisSuccessful========" + type);
                    switch (type) {
                        case "String":
                            String result = response.body().string();
                            msg.obj = result;
                            break;
                        case "InputStream":
                            InputStream inputStream = response.body().byteStream();//可用于下载文件
                            msg.obj = inputStream;
                            break;
                        case "Byte":
                            byte[] bytes = response.body().bytes();
                            msg.obj = bytes;
                            break;
                        default:
                            String _default = response.body().string();
                            msg.obj = _default;
                            break;
                    }
                    msg.what = 0x2;//网络请求成功
                    handler.sendMessage(msg);
                } else {
                    msg.what = 0x1;//返回数据失败
                    msg.obj = response.message();
                    handler.sendMessage(msg);
                    Logger.e(TAG, "onResponse:response.isSuccessful()==false ");

                }
            }
        });
    }

    private Param[] map2Params(Map<String, String> paramMap) {
        if (paramMap == null) return null;
        Param[] arrayOfParam = new Param[paramMap.size()];
        Set localSet = paramMap.entrySet();
        int i = 0;
        Iterator localIterator = localSet.iterator();
        while (localIterator.hasNext()) {
            Map.Entry localEntry = (Map.Entry) localIterator.next();
            arrayOfParam[i] = new Param((String) localEntry.getKey(), (String) localEntry.getValue());
            i++;
        }
        return arrayOfParam;
    }

    private Request buildPostRequest(String url, Param[] paramArrayOfParam) {
        int i = 0;
        if (paramArrayOfParam == null)
            paramArrayOfParam = new Param[0];
        FormBody.Builder localBuilder = new FormBody.Builder();
        int j = paramArrayOfParam.length;
        while (i < j) {
            Param localParam = paramArrayOfParam[i];
            localBuilder.add(localParam.key, localParam.value);
            i++;
        }
        FormBody localFormBody = localBuilder.build();
        Request.Builder localBuilder1 = new Request.Builder().url(url).post(localFormBody);
        return localBuilder1.build();
    }

    /**
     * 设置超时时间
     */
    private void setTimeOut(OkHttpClient client) {
        client = new OkHttpClient.Builder()
                .readTimeout(READ_TIMEOUT, TimeUnit.SECONDS)//设置读取超时时间
                .writeTimeout(WRITE_TIMEOUT, TimeUnit.SECONDS)//设置写的超时时间
                .connectTimeout(CONNECT_TIMEOUT, TimeUnit.SECONDS)//设置连接超时时间
                .build();

    }

    public static class Param {
        String key;
        String value;

        public Param() {
        }

        public Param(String key, String value) {
            this.key = key;
            this.value = value;
        }
    }
}