安卓okhttp的常见用法

1.git地址：https://github.com/square/okhttp

2.添加依赖: compile 'com.squareup.okhttp3:okhttp:3.9.0' 

3.代码

/** * okhttp异步请求，Get方法 */public void okHttpGet() {    OkHttpClient client = new OkHttpClient();    Request request = new Request            .Builder()            .url("http://japi.juhe.cn/joke/content/list.from")            .get()            .build();    client.newCall(request).enqueue(new Callback() {        @Override        public void onFailure(Call call, IOException e) {            Log.e(TAG, "onFailure: ");        }        @Override        public void onResponse(Call call, Response response) throws IOException {            Log.e(TAG, "onResponse: " + response.body().string());        }    });}/** * okhttp同步请求，Get方法 */public void okHttpGet2() throws IOException {    OkHttpClient client = new OkHttpClient();    Request request = new Request            .Builder()            .url("http://japi.juhe.cn/joke/content/list.from")            .get()            .build();    Response execute = client.newCall(request).execute();    String string = execute.body().string();    Log.e(TAG, "okHttpGet2: " + string);}/** * okhttp异步请求，Post方法 */public void okHttpPost() {    OkHttpClient client = new OkHttpClient();    //创建Form表单对象，可以add多个键值队    FormBody formBody = new FormBody.Builder()            .add("key", "123")            .add("param", "value")            .build();    //创建一个Request    Request request = new Request.Builder()            .url("http://japi.juhe.cn/joke/content/list.from")            .post(formBody)            .build();    //发起异步请求，并加入回调    client.newCall(request).enqueue(new Callback() {        @Override        public void onFailure(Call call, IOException e) {            Log.e(TAG, "onFailure: ");        }        @Override        public void onResponse(Call call, Response response) throws IOException {            Log.e(TAG, "onResponse: " + response.body().string());        }    });}/** * okhttp同步请求，Post方法 */public void okHttpPost2() throws IOException {    OkHttpClient client = new OkHttpClient();    FormBody formBody = new FormBody.Builder()            .add("key", "123")            .add("param", "value")            .build();    Request request = new Request.Builder()            .url("http://japi.juhe.cn/joke/content/list.from")            .post(formBody)            .build();    Response execute = client.newCall(request).execute();    String string = execute.body().string();    Log.e(TAG, "okHttpPost2: " + string);}
/** * okhttp异步请求，Post方法上传单个文件 */private void postFile() {    OkHttpClient mOkHttpClient = new OkHttpClient();    File file = new File("/sdcard/demo.txt");    Request request = new Request.Builder()            .url("https://api.github.com/markdown/raw")            .post(RequestBody.create(MediaType.parse("text/x-markdown; charset=utf-8"), file))            .build();    Call call = mOkHttpClient.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(TAG, response.body().string());        }    });}
/** * okhttp异步请求，Post方法上传多个文件 */public  void upload() {    OkHttpClient client = new OkHttpClient();    //多个文件集合    List<File> list = new ArrayList<>();    MultipartBody.Builder builder = new MultipartBody.Builder();    //设置为表单类型    builder.setType(MultipartBody.FORM);    //添加表单键值    builder.addFormDataPart("param", "value");    for (File file : list) {        //添加多个文件        RequestBody fileBody = RequestBody.create(MediaType.parse("application/octet-stream"), file);        builder.addFormDataPart("files", file.getName(), fileBody);    }    Request request = new Request.Builder()            .url("http://192.168.1.8/upload/UploadServlet")            .post(builder.build())            .build();    //发起异步请求，并加入回调    client.newCall(request).enqueue(new Callback() {        @Override        public void onFailure(Call call, IOException e) {        }        @Override        public void onResponse(Call call, Response response) throws IOException {            Log.e("okHttp", "updLoad=" + response.body().string());        }    });}
/** * okhttp异步请求，Post方法上传字符串 */private void postString() throws IOException {    OkHttpClient client = new OkHttpClient();    String postBody = ""            + "Releases\n"            + "--------\n"            + "\n"            + " * zhangfei\n"            + " * guanyu\n"            + " * liubei\n";    Request request = new Request.Builder()            .url("https://api.github.com/markdown/raw")            .post(RequestBody.create(MediaType.parse("text/x-markdown; charset=utf-8"), postBody))            .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.e(TAG, "onResponse: " + response.body().string());        }    });}
/** * 下载文件 */public  void downLoadFile() {    OkHttpClient client = new OkHttpClient();     final File file = new File(Environment.getExternalStorageDirectory(), "123.apk");     Request request = new Request.Builder().url("http://www.mfmatches.com/mfmatches.apk").build();     Call call = client.newCall(request);    call.enqueue(new Callback() {        @Override        public void onFailure(Call call, IOException e) {            Log.e(TAG, "下载失败");        }        @Override        public void onResponse(Call call, Response response) throws IOException {            InputStream is = null;            byte[] buf = new byte[2048];            int len = 0;            FileOutputStream fos = null;            try {                long total = response.body().contentLength();                Log.e(TAG, "total------>" + total);                long current = 0;                is = response.body().byteStream();                fos = new FileOutputStream(file);                while ((len = is.read(buf)) != -1) {                    current += len;                    fos.write(buf, 0, len);                    Log.e(TAG, "current------>" + current);                }                fos.flush();            } catch (IOException e) {                Log.e(TAG, e.toString());            } finally {                try {                    if (is != null) {                        is.close();                    }                    if (fos != null) {                        fos.close();                    }                } catch (IOException e) {                    Log.e(TAG, e.toString());                }            }        }    });}