上传头像 用okhttp

首先  ok的两个依赖:

       //okhttp
           compile 'com.squareup.okhttp3:okhttp:3.6.0'
           compile 'com.squareup.okio:okio:1.11.0'

//加载图片
compile 'com.github.bumptech.glide:glide:3.6.1'

//工具类

package com.example.administrator.a1511a_myjd.view.util;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Environment;
import android.util.Log;
import android.widget.Toast;

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;

/**
 * Created by Dash on 2017/12/8.
 */
public class OkHttp3Util {


    /**
     * 懒汉 安全 加同步
     * 1.私有的静态成员变量 只声明不创建
     * 2.私有的构造方法
     * 3.提供返回实例的静态方法
     */
    private static OkHttpClient okHttpClient = null;


    private OkHttp3Util() {
    }

    public static OkHttpClient getInstance() {

        if (okHttpClient == null) {
            //加同步安全
            synchronized (OkHttp3Util.class) {
                if (okHttpClient == null) {
                    //okhttp可以缓存数据....指定缓存路径
                    File sdcache = new File(Environment.getExternalStorageDirectory(), 

"cache");
                    //指定缓存大小
                    int cacheSize = 10 * 1024 * 1024;

                    okHttpClient = new OkHttpClient.Builder()//构建器
                            .connectTimeout(15, TimeUnit.SECONDS)//连接超时
                            .writeTimeout(20, TimeUnit.SECONDS)//写入超时
                            .readTimeout(20, TimeUnit.SECONDS)//读取超时


                            .cache(new Cache(sdcache.getAbsoluteFile(), cacheSize))

//设置缓存
                            .build();
                }
            }

        }

        return okHttpClient;
    }

    /**
     * get请求
     * 参数1 url
     * 参数2 回调Callback
     */

    public static void doGet(String oldUrl, Callback callback) {

        //创建OkHttpClient请求对象
        OkHttpClient okHttpClient = getInstance();
        //创建Request
        Request request = new Request.Builder().url(oldUrl).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 Map, String> params post请求的时候给服务器传的数据
     *      add..("","")
     *      add()
     */

    public static void doPost(String url, Map 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,,,map集合遍历方式
        for (String key : params.keySet()) {
            builder.add(key, params.get(key));

        }


        //创建Request....formBody...new formBody.Builder()...add()....build()
        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....包括图片....流的形式传任意文件...
     * 参数1 url
     * file表示上传的文件
     * fileName....文件的名字,,例如aaa.jpg
     * params ....传递除了file文件 其他的参数放到map集合
     *
     */
    public static void uploadFile(String url, File file, String fileName,Map

 params,Callback callback) {
        //创建OkHttpClient请求对象

        OkHttpClient okHttpClient = getInstance();

        //MultipartBody多功能的请求实体对象,,,formBody只能传表单形式的数据
        MultipartBody.Builder builder = new MultipartBody.Builder();
        builder.setType(MultipartBody.FORM);

        //参数
        if (params != null){
            for (String key : params.keySet()){
                builder.addFormDataPart(key,params.get(key));
            }
        }
   //文件...参数name指的是请求路径中所接受的参数...如果路径接收参数键值是fileeeee,

//此处应该改变
        builder.addFormDataPart("file",fileName,RequestBody.create

(MediaType.parse("application/octet-stream"),file));

        //构建
        MultipartBody multipartBody = builder.build();

        //创建Request
        Request request = new Request.Builder().url(url).post(multipartBody).build();

        //得到Call
        Call call = okHttpClient.newCall(request);
        //执行请求
        call.enqueue(callback);

    }

    /**
     * Post请求发送JSON数据....{"name":"zhangsan","pwd":"123456"}
     * 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er：请求Url
     * 参数san：保存文件的文件夹....download
     */
    public static void download(final Activity 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) {
                //com.orhanobut.logger.Logger.e(e.getLocalizedMessage());
            }

            @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();//以字节流的形式拿回响应实体内容
                    //apk保存路径
                    final String fileDir = isExistDir(saveDir);
                    //文件
                    File file = new File(fileDir, getNameFromUrl(url));

                    fos = new FileOutputStream(file);
                    while ((len = is.read(buf)) != -1) {
                        fos.write(buf, 0, len);
                    }

                    fos.flush();

                    context.runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
  Toast.makeText(context, "下载成功:" + fileDir + ",

" + getNameFromUrl(url), Toast.LENGTH_SHORT).show();
                        }
                    });

                    //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();


                }
            }
        });

    }

    /**
     * 判断下载目录是否存在......并返回绝对路径
     *
     * @param saveDir
     * @return
     * @throws IOException
     */
    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);
    }

}

工具类结束

//举例用法

https://www.zhaoapi.cn/file/upload   上传头像的接口   

                         上传成功后,再获取下来赋值到控件

//把头像存到接口  每次接口获取赋值 找到根目录下的yixilong.jpg文件图片,dash.jpg是自己随意写的

名字,在接口中显示的名字

File file = new File(Environment.getExternalStorageDirectory(), "yixilong.jpg");

Toast.makeText(getActivity(), file + "", Toast.LENGTH_SHORT).show();

HashMap map = new HashMap<>();
map.put("uid", "4123");

OkHttp3Util.uploadFile(API_util.touxiang_api, file, "dash.jpg", map, new Callback() {
    @Override
    public void onFailure(Call call, IOException e) {
        Log.e("+++", "onFailure: " + e.getMessage());
        e.printStackTrace();
    }

    @Override
    public void onResponse(Call call, final Response response) throws IOException {
        Log.e("---", "onResponse: " + response.body().string());
        if (response.isSuccessful()) {
            getActivity().runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    Toast.makeText(getActivity(), "此时上传成功!!", Toast.LENGTH_SHORT).

show();
                }
            });
            //此时上传成功  获取用户信息
            OkHttp3Util.doGet("https://www.zhaoapi.cn/user/getUserInfo?uid=4123",

 new Callback() {
                @Override

                public void onFailure(Call call, IOException e) {

                }

                @Override
                public void onResponse(Call call, Response response) throws IOException {
                    String string = response.body().string();
                    final UserBean userBean = new Gson().fromJson(string, UserBean.class);
                    getActivity().runOnUiThread(new Runnable() {
                        @Override
                        public void run() {

         Glide.with(getActivity()).load(userBean.getData().getIcon()).into(touxiang);
             Toast.makeText(getActivity(), "上传并且获取成功", Toast.LENGTH_SHORT).show();
                        }
                    });

                }
            });
        }

    }
});