OkHttp工具类

 package test;

 import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;

 import javax.management.RuntimeErrorException;

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

 /**
  * 发送http请求的工具类
  */
 public class HttpUtil {

     //放置请求的URL
     public class URL {

         public static final String REMOTE_ADDRESS = "http://47.94.166.158:8080/android_server/";
         //登陆
         public static final String LOGIN = REMOTE_ADDRESS + "user_login";
         //。。。。
     }

     /**
      * GET请求，不传参只获取结果
      * @param url         url地址
      * @param callback     回调函数
      */
     public static void doGet(String url, Callback callback) throws IOException {
         //创建okHttpClient对象
         OkHttpClient mOkHttpClient = new OkHttpClient();
         //创建一个Request
         Request request = new Request.Builder()
         .url(url)
         .build();

         //new call
         Call call = mOkHttpClient.newCall(request);
         //请求加入调度
         call.enqueue(callback);
     }

     /**
      * 通用post请求（同步）
      * @param url             请求地址
      * @param paramNames    表单属性
      * @param paramValues    表单值
      * @throws IOException
      */
     public static String doPost(String url, String[] paramNames, String[] paramValues) throws IOException {

         OkHttpClient client = new OkHttpClient();

         FormBody.Builder builder = new FormBody.Builder();
         for (int i = 0; i < paramNames.length; i++) {
             builder.add(paramNames[i], paramValues[i]);
         }

         Request request = new Request.Builder()
         .url(url)
         .post(builder.build())
         .build();

         Call call = client.newCall(request);
         return call.execute().body().string();
     }

     /**
      * 通用post请求（异步）
      * @param url             请求地址
      * @param paramNames    表单属性
      * @param paramValues    表单值
      * @param callback         回调函数
      */
     public static void doPostAsync(String url, String[] paramNames, String[] paramValues, Callback callback) {

         OkHttpClient client = new OkHttpClient();

         FormBody.Builder builder = new FormBody.Builder();
         for (int i = 0; i < paramNames.length; i++) { builder.add(paramNames[i], paramValues[i]); }

         Request request = new Request.Builder()
         .url(url)
         .post(builder.build())
         .build();

         Call call = client.newCall(request);
         call.enqueue(callback);
     }

     /**
      * 文件上传（上传头像，视频）
      * @param url            请求地址
      * @param paramValues    上传的文件，头像为1个，视频可以同时上传多个
      */
     public static void fileUpload(final String url, final File file) {

         OkHttpClient client = new OkHttpClient();

         //文件类型
         MediaType TYPE_FILE = MediaType.parse("application/octet-stream");

         Request.Builder builder = new Request.Builder();

         for (int i = 0; i < paramValues.length; i++) {

             builder.post(RequestBody.create(TYPE_FILE, paramValues[i]));
         }

         Request request = builder.url(url)
                 .build();

         Call call  = client.newCall(request);
         call.enqueue(callback);

     }

     /**
      * 表单参数和文件同时请求（异步）
      * @param url             请求地址
      * @param paramNames    属性名
      * @param paramValues    属性值
      * @param callback         回调函数
      */

 }