Android关于Okhttp那些事
2018-04-04 本文已影响99人
流船
关于OkHttp的上传下载文件
前言:
前面介绍了基于Okhttp的get、post基本使用，今天来实现以下基于okhttp的文件上传、下载。
关于okhttp相关文章地址:
文件上传:
1.)不携带参数上传文件:
/**
* 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.)携带参数上传文件:
/**
*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);
}
}
});
}
最后我希望大家在编程的路上一路顺利，如果喜欢多踩踩评论嘿嘿哈哈。纯手敲。
