Android okHttp网络请求之文件上传下载

文件上传：

1.）不带参数上传文件

    /**     * 上传文件     * @param actionUrl 接口地址     * @param filePath  本地文件地址     */    public <T> void upLoadFile(String actionUrl, String filePath, final ReqCallBack<T> callBack) {        //补全请求地址        String requestUrl = String.format("%s/%s", BASE_URL, actionUrl);        //创建File        File file = new File(filePath);        //创建RequestBody        RequestBody body = RequestBody.create(MEDIA_OBJECT_STREAM, file);        //创建Request        final Request request = new Request.Builder().url(requestUrl).post(body).build();        final Call call = mOkHttpClient.newBuilder().writeTimeout(50, TimeUnit.SECONDS).build().newCall(request);        call.enqueue(new Callback() {            @Override            public void onFailure(Call call, IOException e) {                Log.e(TAG, e.toString());                failedCallBack("上传失败", callBack);            }            @Override            public void onResponse(Call call, Response response) throws IOException {                if (response.isSuccessful()) {                    String string = response.body().string();                    Log.e(TAG, "response ----->" + string);                    successCallBack((T) string, callBack);                } else {                    failedCallBack("上传失败", callBack);                }            }        });    }

2.）带参数上传文件

/**     *上传文件     * @param actionUrl 接口地址     * @param paramsMap 参数     * @param callBack 回调     * @param <T>     */    public <T>void upLoadFile(String actionUrl, HashMap<String, Object> paramsMap, final ReqCallBack<T> callBack) {        try {            //补全请求地址            String requestUrl = String.format("%s/%s", upload_head, actionUrl);            MultipartBody.Builder builder = new MultipartBody.Builder();            //设置类型            builder.setType(MultipartBody.FORM);            //追加参数            for (String key : paramsMap.keySet()) {                Object object = paramsMap.get(key);                if (!(object instanceof File)) {                    builder.addFormDataPart(key, object.toString());                } else {                    File file = (File) object;                    builder.addFormDataPart(key, file.getName(), RequestBody.create(null, file));                }            }            //创建RequestBody            RequestBody body = builder.build();            //创建Request            final Request request = new Request.Builder().url(requestUrl).post(body).build();            //单独设置参数 比如读取超时时间            final Call call = mOkHttpClient.newBuilder().writeTimeout(50, TimeUnit.SECONDS).build().newCall(request);            call.enqueue(new Callback() {                @Override                public void onFailure(Call call, IOException e) {                    Log.e(TAG, e.toString());                    failedCallBack("上传失败", callBack);                }                @Override                public void onResponse(Call call, Response response) throws IOException {                    if (response.isSuccessful()) {                        String string = response.body().string();                        Log.e(TAG, "response ----->" + string);                        successCallBack((T) string, callBack);                    } else {                        failedCallBack("上传失败", callBack);                    }                }            });        } catch (Exception e) {            Log.e(TAG, e.toString());        }    }

3.)带参数带进度上传文件

 /**     *上传文件     * @param actionUrl 接口地址     * @param paramsMap 参数     * @param callBack 回调     * @param <T>     */    public <T> void upLoadFile(String actionUrl, HashMap<String, Object> paramsMap, final ReqProgressCallBack<T> callBack) {        try {            //补全请求地址            String requestUrl = String.format("%s/%s", upload_head, actionUrl);            MultipartBody.Builder builder = new MultipartBody.Builder();            //设置类型            builder.setType(MultipartBody.FORM);            //追加参数            for (String key : paramsMap.keySet()) {                Object object = paramsMap.get(key);                if (!(object instanceof File)) {                    builder.addFormDataPart(key, object.toString());                } else {                    File file = (File) object;                    builder.addFormDataPart(key, file.getName(), createProgressRequestBody(MEDIA_OBJECT_STREAM, file, callBack));                }            }            //创建RequestBody            RequestBody body = builder.build();            //创建Request            final Request request = new Request.Builder().url(requestUrl).post(body).build();            final Call call = mOkHttpClient.newBuilder().writeTimeout(50, TimeUnit.SECONDS).build().newCall(request);            call.enqueue(new Callback() {                @Override                public void onFailure(Call call, IOException e) {                    Log.e(TAG, e.toString());                    failedCallBack("上传失败", callBack);                }                @Override                public void onResponse(Call call, Response response) throws IOException {                    if (response.isSuccessful()) {                        String string = response.body().string();                        Log.e(TAG, "response ----->" + string);                        successCallBack((T) string, callBack);                    } else {                        failedCallBack("上传失败", callBack);                    }                }            });        } catch (Exception e) {            Log.e(TAG, e.toString());        }    }

4.）创建带进度RequestBody

 /**     * 创建带进度的RequestBody     * @param contentType MediaType     * @param file  准备上传的文件     * @param callBack 回调     * @param <T>     * @return     */    public <T> RequestBody createProgressRequestBody(final MediaType contentType, final File file, final ReqProgressCallBack<T> callBack) {        return new RequestBody() {            @Override            public MediaType contentType() {                return contentType;            }            @Override            public long contentLength() {                return file.length();            }            @Override            public void writeTo(BufferedSink sink) throws IOException {                Source source;                try {                    source = Okio.source(file);                    Buffer buf = new Buffer();                    long remaining = contentLength();                    long current = 0;                    for (long readCount; (readCount = source.read(buf, 2048)) != -1; ) {                        sink.write(buf, readCount);                        current += readCount;                        Log.e(TAG, "current------>" + current);                        progressCallBack(remaining, current, callBack);                    }                } catch (Exception e) {                    e.printStackTrace();                }            }        };    }

5.)不带进度文件下载

  /**     * 下载文件     * @param fileUrl 文件url     * @param destFileDir 存储目标目录     */    public <T> void downLoadFile(String fileUrl, final String destFileDir, final ReqCallBack<T> callBack) {        final String fileName = MD5.encode(fileUrl);        final File file = new File(destFileDir, fileName);        if (file.exists()) {            successCallBack((T) file, callBack);            return;        }        final Request request = new Request.Builder().url(fileUrl).build();        final Call call = mOkHttpClient.newCall(request);        call.enqueue(new Callback() {            @Override            public void onFailure(Call call, IOException e) {                Log.e(TAG, e.toString());                failedCallBack("下载失败", callBack);            }            @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();                    successCallBack((T) file, callBack);                } catch (IOException e) {                    Log.e(TAG, e.toString());                    failedCallBack("下载失败", callBack);                } finally {                    try {                        if (is != null) {                            is.close();                        }                        if (fos != null) {                            fos.close();                        }                    } catch (IOException e) {                        Log.e(TAG, e.toString());                    }                }            }        });    }

6.）带进度文件下载

 /**     * 下载文件     * @param fileUrl 文件url     * @param destFileDir 存储目标目录     */    public <T> void downLoadFile(String fileUrl, final String destFileDir, final ReqProgressCallBack<T> callBack) {        final String fileName = MD5.encode(fileUrl);        final File file = new File(destFileDir, fileName);        if (file.exists()) {            successCallBack((T) file, callBack);            return;        }        final Request request = new Request.Builder().url(fileUrl).build();        final Call call = mOkHttpClient.newCall(request);        call.enqueue(new Callback() {            @Override            public void onFailure(Call call, IOException e) {                Log.e(TAG, e.toString());                failedCallBack("下载失败", callBack);            }            @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);                        progressCallBack(total, current, callBack);                    }                    fos.flush();                    successCallBack((T) file, callBack);                } catch (IOException e) {                    Log.e(TAG, e.toString());                    failedCallBack("下载失败", callBack);                } finally {                    try {                        if (is != null) {                            is.close();                        }                        if (fos != null) {                            fos.close();                        }                    } catch (IOException e) {                        Log.e(TAG, e.toString());                    }                }            }        });    }

 

7.）接口ReqProgressCallBack.java实现

public interface ReqProgressCallBack<T>  extends ReqCallBack<T>{    /**     * 响应进度更新     */    void onProgress(long total, long current);}

8.）进度回调实现

    /**     * 统一处理进度信息     * @param total    总计大小     * @param current  当前进度     * @param callBack     * @param <T>     */    private <T> void progressCallBack(final long total, final long current, final ReqProgressCallBack<T> callBack) {        okHttpHandler.post(new Runnable() {            @Override            public void run() {                if (callBack != null) {                    callBack.onProgress(total, current);                }            }        });    }

 

小结：基于okHttp的文件上传、下载基本实现，接下来就是返回数据的解析了。