Android okhttp的使用

首先在build.gradle中引入okhttp

    implementation 'com.squareup.okhttp3:okhttp:3.14.2'    implementation 'com.squareup.okio:okio:1.17.4'

下面是demo（用okthttp下载网络上的资源）

//下载路径，如果路径无效了，可换成你的下载路径final String url = "http://sancloud.com/resource/" + file;Request request = new Request.Builder().url(url).build();new OkHttpClient().newCall(request).enqueue(new Callback() {    @Override    public void onFailure(Call call, IOException e) {        // 下载失败        e.printStackTrace();        Log.i("DOWNLOAD","download failed");    }    @Override    public void onResponse(Call call, Response response) throws IOException {        Sink sink = null;        BufferedSink bufferedSink = null;        String filename = url.substring(url.lastIndexOf("/") + 1);        //这是里的mContext是我提前获取了android的context        File localFile = mContext.getFilesDir()+File.separator+filename         try {            sink = Okio.sink(localFile);            bufferedSink = Okio.buffer(sink);            bufferedSink.writeAll(response.body().source());            bufferedSink.close();            }        } catch (Exception e) {            e.printStackTrace();        } finally {            if (bufferedSink != null) {                bufferedSink.close();            }        }    }});

用okthttp将资源上传至网络

        // 获得输入框中的路径        File file = new File(path);        OkHttpClient client = new OkHttpClient();        // 上传文件使用MultipartBody.Builder        RequestBody requestBody = new MultipartBody.Builder()                .setType(MultipartBody.FORM)                // 提交普通字段                .addFormDataPart("id", String.valueOf(id))                 // 提交文件，第一个参数是键（key="第一个参数"），第二个参数是文件名，第三个是一个RequestBody                .addFormDataPart("file", file.getName(),                RequestBody.create(MediaType.parse("multipart/form-data"), file))                 .build();        // POST请求        Request request = new Request.Builder()                .url("http://sancloud.com:9111/MobileCenter/upload")                .post(requestBody)                .build();        client.newCall(request).enqueue(new Callback() {            @Override            public void onFailure(Call call, IOException e) {                LogUtils.w("文件上传出现问题");            }            @Override            public void onResponse(Call call, Response response) throws IOException {                LogUtils.i("log文件上传成功");            }        });

来源地址：https://blog.csdn.net/weixin_49855330/article/details/129379974