Android 文件上传 使用AsyncHttpClient开源框架

public void upload(View view) {
AsyncHttpClient client = new AsyncHttpClient();
RequestParams requestParams = new RequestParams();
File file = new File("/sdcard/NTUSER.DAT.LOG");
try {
requestParams.put("file", file);
} catch (FileNotFoundException e) {
}

client.post("http://10.0.2.2:8080/FileUploadServlet", requestParams,
new AsyncHttpResponseHandler() {
@Override
public void onSuccess(String response) {
Toast.makeText(MainActivity.this, response,
Toast.LENGTH_SHORT).show();
}
});

}