OkHTTP基本使用

GET请求
private void okHttpget(String url) {
//创建client对象
OkHttpClient client = new OkHttpClient.Builder()
//设置连接超时时间
.callTimeout(5, TimeUnit.SECONDS)
//设置读取超时时间
.readTimeout(5, TimeUnit.SECONDS)
//创建OkHttpClient对象
.build();

    //request对象
    Request request = new Request.Builder()
            //设置连接网址url
            .url(url)
            //设置连接方式
            .get()
            //创建request对象
            .build();
    //发起连接
    Call call = client.newCall(request);

    //获得响应体
    call.enqueue(new Callback() {
        //连接失败
        @Override
        public void onFailure(Call call, IOException e) {

        }

        //连接成功
        @Override
        public void onResponse(Call call,  Response response) throws IOException {

            Log.i("##", "onResponse: "+response.body().string());
        }
    });
}

POST请求
private void okHttpPostRegister(String url,String name,String params) {
OkHttpClient client = new OkHttpClient.Builder()
.readTimeout(5, TimeUnit.SECONDS)
.callTimeout(5, TimeUnit.SECONDS)
.build();

    //请求体RequsetBody的实现子类
    FormBody formBody = new FormBody.Builder()
            .add("phone", phone)
            .build();

    Request request = new Request.Builder()
            .url(url)
            .post(formBody)
            .build();
    Call call = client.newCall(request);
    call.enqueue(new Callback() {
        @Override
        public void onFailure(Call call, IOException e) {

        }

        @Override
        public void onResponse(Call call, Response response) throws IOException {
            Log.i("##", "onResponse: "+response.body().string());
        }
    });
}

简单封装的OkHttp工具类
OkHttpUtil类
import com.example.h0804_day03okhttp.model.OkHttpListener;

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

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

public class OkHttpUtil {
private OkHttpClient client;

//只创建一个client 节省资源
private OkHttpUtil() {
    client = new OkHttpClient.Builder()
            .callTimeout(5, TimeUnit.SECONDS)
            .readTimeout(5, TimeUnit.SECONDS)
            .build();
}


//单例模式
private static OkHttpUtil instance;

public static OkHttpUtil getInstance() {
    if (instance == null) {
        synchronized (OkHttpUtil.class) {
            if (instance == null) {
                instance = new OkHttpUtil();
            }
        }
    }
    return instance;
}

/***
 *
 * @param url 请求的网址
 * @param listener 接口回调获得结果
 */
public void okHttpGet(String url, final OkHttpListener listener) {
    Request request = new Request.Builder()
            .url(url)
            .get()
            .build();

    Call call = client.newCall(request);

    call.enqueue(new Callback() {
        @Override
        public void onFailure(Call call, IOException e) {
            listener.fail(e.getMessage());
        }

        @Override
        public void onResponse(Call call, Response response) throws IOException {
            listener.success(response.body().string());
        }
    });
}

/***
 *
 * @param url 请求的网址
 * @param map 请求体的参数
 * @param listener 接口回调获得结果
 */
public void okHttpPost(String url, Map map, final OkHttpListener listener) {
    FormBody.Builder formBodyBuilder = new FormBody.Builder();

    Set keySet = map.keySet();
    for (String key : keySet) {
        formBodyBuilder.add(key, map.get(key));
    }

    FormBody formBody = formBodyBuilder.build();

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

    Call call = client.newCall(request);

    call.enqueue(new Callback() {
        @Override
        public void onFailure(Call call, IOException e) {
            listener.fail(e.getMessage());
        }

        @Override
        public void onResponse(Call call, Response response) throws IOException {
            listener.success(response.body().string());
        }
    });
}

}

/***
 * 
 * @param url 要下载文件的网址
 * @param file 要保存的文件
 * @param listener 接口回调获得结果
 */
public void okHttpDownload(String url, final String file, final OkHttpListener listener) {

    Request request = new Request.Builder()
            .url(url)
            .get()
            .build();

    Call call = client.newCall(request);

    call.enqueue(new Callback() {
        @Override
        public void onFailure(Call call, IOException e) {
            listener.fail(e.getMessage());
        }

        @Override
        public void onResponse(Call call, Response response) throws IOException {
            //获得流
            InputStream is = response.body().byteStream();
            FileOutputStream fos = new FileOutputStream(file);
            int length = 0;
            byte[] bytes = new byte[1024 * 8];

            //边读边写
            while ((length = is.read(bytes)) != -1){
                fos.write(bytes,0,length);
            }
            if (is != null) {
                is.close();
            }
            if (fos != null) {
                raf.close();
            }
            listener.success("下载成功");
        }
    });

}

/***
*
* @param url 服务器地址
* @param filePath 要上传文件的路径
* @param fileName 文件上传到服务器之后的名称
* @param type 文件类型
* @param listener 接口回调获得结果
*/
public void okHttpUpload(String url, String filePath, String fileName, String type, final OkHttpListener listener) {

    MultipartBody multipartBody = new MultipartBody.Builder()
            .setType(MultipartBody.FORM)
            .addFormDataPart("file", fileName, RequestBody.create(MediaType.parse(type), new File(filePath)))
            .build();

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

    Call call = client.newCall(request);

    call.enqueue(new Callback() {
        @Override
        public void onFailure(Call call, IOException e) {
            listener.fail(e.getMessage());
        }

        @Override
        public void onResponse(Call call, Response response) throws IOException {
            listener.success("上传成功");
        }
    });