OkHttp 用起來真的很方便。
官方網站：http://square.github.io/okhttp/
Download a file with OkHttp synchronously
Here is the sample source code to download a file synchronously then write the file temporarily to disk.
public void downloadFileSync(String downloadUrl) throws Exception {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder().url(downloadUrl).build();
Response response = client.newCall(request).execute();
if (!response.isSuccessful()) {
throw new IOException(“Failed to download file: “ + response);
}
FileOutputStream fos = new FileOutputStream(“d:/tmp.txt”);
fos.write(response.body().bytes());
fos.close();
}
Download a file with OkHttp asynchronously
Here is the sample code to download a file asynchronously then write it to disk.
public void downloadFileAsync(final String downloadUrl) throws Exception {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder().url(downloadUrl).build();
client.newCall(request).enqueue(new Callback() {
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
public void onResponse(Call call, Response response) throws IOException {
if (!response.isSuccessful()) {
throw new IOException(“Failed to download file: “ + response);
}
FileOutputStream fos = new FileOutputStream(“d:/tmp.txt”);
fos.write(response.body().bytes());
fos.close();
}
});
}