okhttp的基本使用

Android中volley框架，因为httpclient的问题，不建议使用

Paste_Image.png

基本代码逻辑：

  OkHttpClient okHttpClient = new OkHttpClient();
    Request.Builder builder = new Request.Builder();
    Request request = builder.get().url("www.baidu.com").build();
    Call call = okHttpClient.newCall(request);
    call.enqueue(new Callback() {
        @Override
        public void onFailure(Call call, IOException e) {

        }

        @Override
        public void onResponse(Call call, Response response) throws IOException {

        }
    });

执行post请求的方法：

  private void postMethod() {
    OkHttpClient okHttpClient = new OkHttpClient();
    Request.Builder builder = new Request.Builder();
    FormBody formBody = new FormBody.Builder().add("name", "xikoxoap").build();
    Request request = builder.url("www.baidu.com").post(formBody).build();
    Call call = okHttpClient.newCall(request);
    call.enqueue(new Callback() {
        @Override
        public void onFailure(Call call, IOException e) {
            
        }

        @Override
        public void onResponse(Call call, Response response) throws IOException {

        }
    });
}

上传文件的方式：

private void postAsynFile() {
    mOkHttpClient=new OkHttpClient();
    File file = new File("/sdcard/wangshu.txt");
    Request request = new Request.Builder()
            .url("https://api.github.com/markdown/raw")
            .post(RequestBody.create(MEDIA_TYPE_MARKDOWN, file))
            .build();

        mOkHttpClient.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {

            }

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

下载图片：

 private void downAsynFile() {
    mOkHttpClient = new OkHttpClient();
    String url = "http://img.my.csdn.net/uploads/201603/26/1458988468_5804.jpg";
    Request request = new Request.Builder().url(url).build();
    mOkHttpClient.newCall(request).enqueue(new Callback() {
        @Override
        public void onFailure(Call call, IOException e) {

        }

        @Override
        public void onResponse(Call call, Response response) {
            InputStream inputStream = response.body().byteStream();
            FileOutputStream fileOutputStream = null;
            try {
                fileOutputStream = new FileOutputStream(new File("/sdcard/wangshu.jpg"));
                byte[] buffer = new byte[2048];
                int len = 0;
                while ((len = inputStream.read(buffer)) != -1) {
                    fileOutputStream.write(buffer, 0, len);
                }
                fileOutputStream.flush();
            } catch (IOException e) {
                Log.i("wangshu", "IOException");
                e.printStackTrace();
           }

           Log.d("wangshu", "文件下载成功");
       }
   });

}