OkHttp3封装
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依赖compile 'com.squareup.okio:okio:1.5.0' compile 'com.squareup.okhttp3:okhttp:3.2.0'package com.bwei.okhttp3ps.utils;import android.content.Intent;import android.net.Uri;import android.os.Environment;import android.util.Log;import android.widget.Toast;import com.bwei.okhttp3ps.activity.MainActivity;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.Map;import java.util.concurrent.TimeUnit;import okhttp3.Cache;import okhttp3.Call;import okhttp3.Callback;import okhttp3.FormBody;import okhttp3.MediaType;import okhttp3.MultipartBody;import okhttp3.OkHttpClient;import okhttp3.Request;import okhttp3.RequestBody;import okhttp3.Response;import okhttp3.internal.cache.CacheInterceptor;import okhttp3.logging.HttpLoggingInterceptor;/** * 1. 类的用途 封装OkHttp3的工具类 用单例设计模式 * 2. @author forever * 3. @date 2017/9/6 09:19 */public class OkHttp3Utils { /** * 懒汉 安全 加同步 * 私有的静态成员变量 只声明不创建 * 私有的构造方法 * 提供返回实例的静态方法 */ private static OkHttpClient okHttpClient = null; private OkHttp3Utils() { } public static OkHttpClient getInstance() { if (okHttpClient == null) { //加同步安全 synchronized (OkHttp3Utils.class) { if (okHttpClient == null) { //判空 为空创建实例 // okHttpClient = new OkHttpClient();/** * 和OkHttp2.x有区别的是不能通过OkHttpClient直接设置超时时间和缓存了，而是通过OkHttpClient.Builder来设置， * 通过builder配置好OkHttpClient后用builder.build()来返回OkHttpClient， * 所以我们通常不会调用new OkHttpClient()来得到OkHttpClient，而是通过builder.build()： */ // File sdcache = getExternalCacheDir(); //缓存目录 File sdcache = new File(Environment.getExternalStorageDirectory(), "cache"); int cacheSize = 10 * 1024 * 1024; //OkHttp3拦截器 HttpLoggingInterceptor httpLoggingInterceptor = new HttpLoggingInterceptor(new HttpLoggingInterceptor.Logger() { @Override public void log(String message) { Log.i("xxx", message.toString()); } }); //Okhttp3的拦截器日志分类 4种 httpLoggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY); okHttpClient = new OkHttpClient.Builder().connectTimeout(15, TimeUnit.SECONDS) //添加OkHttp3的拦截器 .addInterceptor(httpLoggingInterceptor) .writeTimeout(20, TimeUnit.SECONDS).readTimeout(20, TimeUnit.SECONDS) .cache(new Cache(sdcache.getAbsoluteFile(), cacheSize)).build(); } } } return okHttpClient; } /** * get请求 * 参数1 url * 参数2 回调Callback */ public static void doGet(String url, Callback callback) { //创建OkHttpClient请求对象 OkHttpClient okHttpClient = getInstance(); //创建Request Request request = new Request.Builder().url(url).build(); //得到Call对象 Call call = okHttpClient.newCall(request); //执行异步请求 call.enqueue(callback); } /** * post请求 * 参数1 url * 参数2 回调Callback */ public static void doPost(String url, Map<String, String> params, Callback callback) { //创建OkHttpClient请求对象 OkHttpClient okHttpClient = getInstance(); //3.x版本post请求换成FormBody 封装键值对参数 FormBody.Builder builder = new FormBody.Builder(); //遍历集合 for (String key : params.keySet()) { builder.add(key, params.get(key)); } //创建Request Request request = new Request.Builder().url(url).post(builder.build()).build(); Call call = okHttpClient.newCall(request); call.enqueue(callback); } /** * post请求上传文件 * 参数1 url * 参数2 回调Callback */ public static void uploadPic(String url, File file, String fileName) { //创建OkHttpClient请求对象 OkHttpClient okHttpClient = getInstance(); //创建RequestBody 封装file参数 RequestBody fileBody = RequestBody.create(MediaType.parse("application/octet-stream"), file); //创建RequestBody 设置类型等 RequestBody requestBody = new MultipartBody.Builder().setType(MultipartBody.FORM).addFormDataPart("file", fileName, fileBody).build(); //创建Request Request request = new Request.Builder().url(url).post(requestBody).build(); //得到Call Call call = okHttpClient.newCall(request); //执行请求 call.enqueue(new Callback() { @Override public void onFailure(Call call, IOException e) { } @Override public void onResponse(Call call, Response response) throws IOException { //上传成功回调 目前不需要处理 } }); } /** * Post请求发送JSON数据 * 参数一：请求Url * 参数二：请求的JSON * 参数三：请求回调 */ public static void doPostJson(String url, String jsonParams, Callback callback) { RequestBody requestBody = RequestBody.create(MediaType.parse("application/json; charset=utf-8"), jsonParams); Request request = new Request.Builder().url(url).post(requestBody).build(); Call call = getInstance().newCall(request); call.enqueue(callback); } /** * 下载文件 以流的形式把apk写入的指定文件 得到file后进行安装 * 参数一：请求Url * 参数二：保存文件的路径名 * 参数三：保存文件的文件名 */ public static void download(final MainActivity context, final String url, final String saveDir) { Request request = new Request.Builder().url(url).build(); Call call = getInstance().newCall(request); call.enqueue(new Callback() { @Override public void onFailure(Call call, IOException e) { Log.i("xxx", e.toString()); } @Override public void onResponse(Call call, final Response response) throws IOException { InputStream is = null; byte[] buf = new byte[2048]; int len = 0; FileOutputStream fos = null; try { is = response.body().byteStream(); //apk保存路径 final String fileDir = isExistDir(saveDir); //文件 File file = new File(fileDir, getNameFromUrl(url)); context.runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(context, "下载成功:" + fileDir + "," + getNameFromUrl(url), Toast.LENGTH_SHORT).show(); } }); fos = new FileOutputStream(file); while ((len = is.read(buf)) != -1) { fos.write(buf, 0, len); } fos.flush(); //apk下载完成后 调用系统的安装方法 Intent intent = new Intent(Intent.ACTION_VIEW); intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive"); context.startActivity(intent); } catch (IOException e) { e.printStackTrace(); } finally { if (is != null) is.close(); if (fos != null) fos.close(); } } }); } /** * @param saveDir * @return * @throws IOException 判断下载目录是否存在 */ public static String isExistDir(String saveDir) throws IOException { // 下载位置 if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { File downloadFile = new File(Environment.getExternalStorageDirectory(), saveDir); if (!downloadFile.mkdirs()) { downloadFile.createNewFile(); } String savePath = downloadFile.getAbsolutePath(); Log.e("savePath", savePath); return savePath; } return null; } /** * @param url * @return 从下载连接中解析出文件名 */ private static String getNameFromUrl(String url) { return url.substring(url.lastIndexOf("/") + 1); }}Activitypackage com.bwei.okhttp3ps.activity;import android.content.Context;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.os.Bundle;import android.os.Environment;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.widget.ImageView;import android.widget.Toast;import com.bwei.okhttp3ps.R;import com.bwei.okhttp3ps.utils.OkHttp3Utils;import java.io.File;import java.io.IOException;import java.util.HashMap;import java.util.Map;import okhttp3.Call;import okhttp3.Callback;import okhttp3.Response;public class MainActivity extends AppCompatActivity { String url = "http://www.93.gov.cn/93app/data.do?"; String picUrl = ""; String apkPath = "http://d.988wan.com/zft/qmzft32_988wan_01.apk"; String apkUrl = "http://shouji.360tpcdn.com/160804/a05b75b7779f7a4afae83601c195ed2b/com.qihoo.haosou_708.apk"; private ImageView iv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); iv = (ImageView) findViewById(R.id.iv); boolean netWorkAvailable = isNetWorkAvailable(this); if (!netWorkAvailable) { Toast.makeText(MainActivity.this, "联网：" + netWorkAvailable, Toast.LENGTH_SHORT).show(); } getData(); // postData(); // postJson(); // uploadPic(); // downloadApk(); } //get的请求 private void getData() { OkHttp3Utils.doGet(url + "channelId=" + 0 + "&startNum=" + 0, new Callback() { @Override public void onFailure(Call call, IOException e) { } @Override public void onResponse(Call call, Response response) throws IOException { //回调在子线程 Log.i("sss", response.body().string()); } }); } //post请求 键值对参数 String url = "http://www.93.gov.cn/93app/data.do?" + "channelId=" + 0 + "&startNum=" + 0; private void postData() { Map<String, String> params = new HashMap<>(); params.put("channelId", "0"); params.put("startNum", "0"); OkHttp3Utils.doPost(url, params, new Callback() { @Override public void onFailure(Call call, IOException e) { } @Override public void onResponse(Call call, Response response) throws IOException { //回调在子线程 } }); } //Post发送JSON数据 private void postJson() { String json = "{\n" + " \"data\": [\n" + " {\n" + " \"title\": \"少林寺\",\n" + " \"url\": \"http://pic67.nipic.com/file/20150514/21036787_181947848862_2.jpg\"\n" + " },\n" + " {\n" + " \"title\": \"武当\",\n" + " \"url\": \"http://c.hiphotos.baidu.com/zhidao/pic/item/1f178a82b9014a909461e9baa1773912b31bee5e.jpg\"\n" + " }\n" + " ]\n" + "}"; OkHttp3Utils.doPostJson("", json, new Callback() { @Override public void onFailure(Call call, IOException e) { } @Override public void onResponse(Call call, Response response) throws IOException { } }); } //图片上传 private void uploadPic() { File file = new File(Environment.getExternalStorageDirectory(), "a.jpg"); String fileName = "a.jpg"; OkHttp3Utils.uploadPic(picUrl, file, fileName); } //文件下载apk private void downloadApk() { String saveDir = "app"; OkHttp3Utils.download(this, apkPath, saveDir); } //其它看需求 //判断网络是否连接 public boolean isNetWorkAvailable(Context context) { //网络连接管理器 ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); //网络信息 NetworkInfo info = connectivityManager.getActiveNetworkInfo(); if (info != null) { return true; } return false; }}阅读全文
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