以OKHttp为基础封装网络请求工具类

特点:

1)支持SPDY协议，共享一个socket来处理同一个服务器的所有请求。

2)无缝支持GZIP,来减少数据流量。

3)缓存相应数据来减少重复的网络请求。

网络协议：

SPDY（读作“SPeeDY”）是Google开发的基于TCP的应用层协议，用以最小化网络延迟，提升网络速度，优化用户的网络使用体验。SPDY并不是一种用于替代HTTP的协议，而是对HTTP协议的增强。新协议的功能包括数据流的多路复用、请求优先级以及HTTP报头压缩。(应用层Http、网络层、传输层协议) <Volley框架实使用了spdy协议>

常用类:

OKHttpClient(客户端对象)、

Request(访问请求)、 RequestBody(请求实体对象)

Response(响应类)、 ResponseBody(响应结果类)

FormEncodingBuilder(表单构造器)、

MediaType(数据类型)

response.isSuccessful() response.body().string()

client.newCall(request)

Activity中的代码：

package com.crs.demo.ui.okhttp;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import com.crs.demo.R;
import com.crs.demo.base.BaseActivity;
import com.crs.demo.constant.UrlConstant;
import com.google.gson.Gson;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;

import org.json.JSONException;
import org.json.JSONObject;

import java.io.IOException;
import java.util.HashMap;

/**
 * Created on 2016/9/19.
 * Author:crs
 * Description:OKHttp网络请求框架的使用
 */
public class OKHttpActivity extends BaseActivity implements View.OnClickListener {

    private Button btn_ok_http_get;
    private Button btn_ok_http_post;
    private TextView tv_ok_http_content;

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

        initViews();
        initListener();

    }

    private void initViews() {
        btn_ok_http_get = findView(R.id.btn_ok_http_get);
        btn_ok_http_post = findView(R.id.btn_ok_http_post);
        tv_ok_http_content = findView(R.id.tv_ok_http_content);
    }

    private void initListener() {
        btn_ok_http_get.setOnClickListener(this);
        btn_ok_http_post.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.btn_ok_http_get: {
                clickGet();
            }
            break;
            case R.id.btn_ok_http_post: {
                clickPost();
            }
            break;
        }
    }

    private void clickPost() {
        HttpUtils httpUtils = new HttpUtils();
        HashMap<String, String> params = new HashMap<>();
        params.put("orderNo", "TH01587458");
        httpUtils.post(UrlConstant.ORDER_STATUS_POST, params, new HttpUtils.BaseCallBack() {
            @Override
            public void onSuccess(Response response, String json) {
                JSONObject jsonObject;
                try {
                    jsonObject = new JSONObject(json);
                    String status = jsonObject.getString("Status");
                    tv_ok_http_content.setText(status);
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }

            @Override
            public void onFail(Request request, IOException e) {

            }

            @Override
            public void onError(Response response, int code) {

            }
        });
    }

    private void clickGet() {
        HttpUtils httpUtils = new HttpUtils();
        httpUtils.get(UrlConstant.ORDER_STATUS, new HttpUtils.BaseCallBack() {
            @Override
            public void onSuccess(Response response, String json) {
                //使用json包解析  注意注解的使用
                Gson gson = new Gson();
                {
                    Entity entity = gson.fromJson(json, Entity.class);
                    AfterSaleType afterSaleType = entity.getAfterSaleType();
                    String shopService = afterSaleType.getShopService();
                    tv_ok_http_content.setText(shopService);
                }

                //只能使用内部类的形式去封装对象，这样就不会报错
                {
                    //ResponseEntity responseEntity = gson.fromJson(json, ResponseEntity.class);
                    //ResponseEntity.AfterSaleType afterSaleType = responseEntity.getAfterSaleType();
                    //String shopService = afterSaleType.getShopServiceTousu();
                    //tv_ok_http_content.setText(shopService);
                }
            }

            @Override
            public void onFail(Request request, IOException e) {

            }

            @Override
            public void onError(Response response, int code) {

            }
        });
    }

}

网络请求工具类HttpUtils中的代码：

注意事项:

1）接口回调(回调结果到Activity中)。

2）子线程与主线程通讯。

3）OKHttp的两个使用步骤。

package com.crs.demo.ui.okhttp;

import android.os.Handler;
import android.os.Looper;

import com.crs.demo.constant.IntConstant;
import com.crs.demo.utils.OKHttpUtils;
import com.google.gson.Gson;
import com.squareup.okhttp.Callback;
import com.squareup.okhttp.FormEncodingBuilder;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.RequestBody;
import com.squareup.okhttp.Response;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;

/**
 * Created on 2016/9/19.
 * Author:crs
 * Description:网络请求工具类的封装
 */
public class HttpUtils {

    private OkHttpClient client;
    private Handler mHandler;

    public HttpUtils() {
        client = new OkHttpClient();
        //设置连接超时时间,在网络正常的时候有效
        client.setConnectTimeout(IntConstant.REQUEST_TIME_OUT, TimeUnit.SECONDS);
        //设置读取数据的超时时间
        client.setReadTimeout(IntConstant.REQUEST_TIME_OUT, TimeUnit.SECONDS);
        //设置写入数据的超时时间
        client.setWriteTimeout(IntConstant.REQUEST_TIME_OUT, TimeUnit.SECONDS);

        //Looper.getMainLooper()  获取主线程的消息队列
        mHandler = new Handler(Looper.getMainLooper());
    }

    public void get(String url, BaseCallBack baseCallBack) {
        Request request = buildRequest(url, null, HttpMethodType.GET);
        sendRequest(request, baseCallBack);
    }


    public void post(String url, HashMap<String, String> params, BaseCallBack baseCallBack) {
        Request request = buildRequest(url, params, HttpMethodType.POST);
        sendRequest(request, baseCallBack);

    }

    /**
     * 1）获取Request对象
     *
     * @param url
     * @param params
     * @param httpMethodType 请求方式不同，Request对象中的内容不一样
     * @return Request 必须要返回Request对象， 因为发送请求的时候要用到此参数
     */
    private Request buildRequest(String url, HashMap<String, String> params, HttpMethodType httpMethodType) {
        //获取辅助类对象
        Request.Builder builder = new Request.Builder();
        builder.url(url);

        //如果是get请求
        if (httpMethodType == HttpMethodType.GET) {
            builder.get();
        } else {
            RequestBody body = buildFormData(params);
            builder.post(body);
        }

        //返回请求对象
        return builder.build();
    }

    /**
     * 2)发送网络请求
     *
     * @param request
     * @param baseCallBack
     */
    private void sendRequest(Request request, final BaseCallBack baseCallBack) {
        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Request request, IOException e) {
                callBackFail(baseCallBack,request, e);
            }

            @Override
            public void onResponse(Response response) throws IOException {
                if (response.isSuccessful()) {
                    String json = response.body().string();
                    //此时请求结果在子线程里面，如何把结果回调到主线程里？
                    callBackSuccess(baseCallBack,response, json);
                } else {
                    callBackError(baseCallBack,response, response.code());
                }
            }
        });
    }


    /**
     * 主要用于构建请求参数
     *
     * @param param
     * @return ResponseBody
     */
    private RequestBody buildFormData(HashMap<String, String> param) {

        FormEncodingBuilder builder = new FormEncodingBuilder();
        //遍历HashMap集合
        if (param != null && !param.isEmpty()) {
            Set<Map.Entry<String, String>> entries = param.entrySet();
            for (Map.Entry<String, String> entity : entries) {
                String key = entity.getKey();
                String value = entity.getValue();
                builder.add(key, value);
            }
        }
        return builder.build();
    }

    //请求类型定义
    private enum HttpMethodType {
        GET,
        POST
    }

    //定义回调接口
    public interface BaseCallBack {
        void onSuccess(Response response, String json);

        void onFail(Request request, IOException e);

        void onError(Response response, int code);
    }



    //主要用于子线程和主线程进行通讯
   private void callBackSuccess(final BaseCallBack baseCallBack, final Response response, final String json){
       mHandler.post(new Runnable() {
           @Override
           public void run() {
               baseCallBack.onSuccess(response,json);
           }
       });
   }


    private void callBackError(final BaseCallBack baseCallBack, final Response response, final int code){
        mHandler.post(new Runnable() {
            @Override
            public void run() {
                baseCallBack.onError(response,code);
            }
        });
    }

    private void callBackFail(final BaseCallBack baseCallBack, final Request request, final IOException e){
        mHandler.post(new Runnable() {
            @Override
            public void run() {
                //相当于此run方法是在主线程执行的，可以进行更新UI的操作
                baseCallBack.onFail(request,e);
            }
        });
    }

}

实体模型的封装

注意事项：

1）使用注解@SerializedName("Code") 修改字段名

2）不要使用内部类嵌套的形式封装实体模型

Entity模型

package com.crs.demo.ui.okhttp;

import com.google.gson.annotations.SerializedName;

/**
 * Created on 2016/9/19.
 * Author:crs
 * Description:请求结果实体模型
 */
public class Entity {
    @SerializedName("Code")
    private String code;
    @SerializedName("AfterSaleType")
    private AfterSaleType afterSaleType;

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public AfterSaleType getAfterSaleType() {
        return afterSaleType;
    }

    public void setAfterSaleType(AfterSaleType afterSaleType) {
        this.afterSaleType = afterSaleType;
    }
}

AfterSaleType模型：

package com.crs.demo.ui.okhttp;

import com.google.gson.annotations.SerializedName;

/**
 * Created on 2016/9/19.
 * Author:crs
 * Description:AfterSaleType实体模型
 */
public class AfterSaleType {
    @SerializedName("UnReceive")
    private String unReceive;
    @SerializedName("returnGoods")
    private String ReturnGoods;
    @SerializedName("ShopServiceTousu")
    private String ShopService;
    @SerializedName("ProductQuality")
    private String productQuality;
    @SerializedName("Invoice")
    private String invoice;
    @SerializedName("Other")
    private String other;

    public String getUnReceive() {
        return unReceive;
    }

    public void setUnReceive(String unReceive) {
        this.unReceive = unReceive;
    }

    public String getReturnGoods() {
        return ReturnGoods;
    }

    public void setReturnGoods(String returnGoods) {
        ReturnGoods = returnGoods;
    }

    public String getShopService() {
        return ShopService;
    }

    public void setShopService(String shopService) {
        ShopService = shopService;
    }

    public String getProductQuality() {
        return productQuality;
    }

    public void setProductQuality(String productQuality) {
        this.productQuality = productQuality;
    }

    public String getInvoice() {
        return invoice;
    }

    public void setInvoice(String invoice) {
        this.invoice = invoice;
    }

    public String getOther() {
        return other;
    }

    public void setOther(String other) {
        this.other = other;
    }
}

作者：chenrushui 发表于2016/9/19 18:41:53 原文链接

阅读：153 评论：0 查看评论

以OKHttp为基础封装网络请求工具类

Trending Articles

《沈冰自述——我和周永康的故事》全本

Moog - Subsequent 25

出售: 林憶蓮•回來愛的身邊 (東芝1A1頭版)

筆記 - 使用 PowerShell 清除停用 AD 帳號與 OU

df-dferh-01 中国区 Android 安装 Google Play Store 后报错的解决办法

「一棒接一棒、棒棒強棒」108學年度家長會長交接典禮

吸烟与MBTI类型判断捷径 (豆瓣 INFJ的奇幻之旅小组)

acermark龍璿國際展出多款包裝設備

枋寮北勢寮隆山宮睽違12年再辦迎王祭典

日本女优有村千佳COS集锦：狂三&黑白岩&亚丝娜&绫波丽

有遇到过这个问题么。/jsb-videoplayer.js not found, possible missing file.

MAS v2.8 magicgenius 汉化版 - 11.11更新

出售: Monster Cable Interlink Reference 2

福建佛教人士望云和尚(林斌)的九仙禅寺被强行收走，望云妈妈被赶出寺庙

R 语言中的OpenBLAS*和英特尔® 数学核心函数库的性能比较

[转载]煞貢、直星、人專吉日\金神七煞歌

HAKERS哈克士戶外 12月8~14日廠拍

OBS Studio 23.2.1 免安裝中文版 - 免費網路實況廣播軟體實況主必備軟體取代Fraps

<請教>行駛中安卓機會重新開機

Udp2raw-tunnel 及其一键安装脚本