二次封装oKHTTP
来源:互联网 发布:天天酷跑解封软件 编辑:程序博客网 时间:2024/06/05 08:43
1.先导依赖
compile ‘com.squareup.okio:okio:1.5.0’
compile ‘com.squareup.okhttp3:okhttp:3.2.0’
2.在创建要工具包和工具类
下面就是二次封装的工具类直接调用即可
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;/** * 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(); File sdcache = new File(Environment.getExternalStorageDirectory(), "cache"); int cacheSize = 10 * 1024 * 1024; okHttpClient = new OkHttpClient.Builder().connectTimeout(15, TimeUnit.SECONDS) .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(); } /** * 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); }}
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3.网络请求数据
private void getData() { OkHttp3Utils.doGet(url, new Callback() { @Override public void onFailure(Call call, IOException e) { } @Override public void onResponse(Call call, Response response) throws IOException { String json = response.body().string(); Message message = handler.obtainMessage(0, json); message.sendToTarget(); } }); }
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