小编Sel*_*lin的帖子

我想在Perl中通过SMTP发送邮件.

我为此写了一个脚本.

#!perl
use warnings;
use strict;
use Net::SMTP;

my $smtpserver = 'server';
my $smtpport = 25;
my $smtpuser   = 'username';
my $smtppassword = 'password';

my $smtp = Net::SMTP->new($smtpserver, Port=>$smtpport, Timeout => 10, Debug => 1);
die "Could not connect to server!\n" unless $smtp;

$smtp->auth($smtpuser, $smtppassword);
$smtp->to('mymail@gmail.com');
$smtp->data();
$smtp->datasend("To: mymail\@gmail.com\n");
$smtp->quit;

当我运行这个脚本时,我的输出如下:

Net::SMTP>>> Net::SMTP(2.31)
Net::SMTP>>>   Net::Cmd(2.29)
Net::SMTP>>>     Exporter(5.65)
Net::SMTP>>>   IO::Socket::INET(1.31)
Net::SMTP>>>     IO::Socket(1.32)
Net::SMTP>>>       IO::Handle(1.31)
Net::SMTP=GLOB(0x273faf0)<<< 220 server GMX Mailservices E
Net::SMTP=GLOB(0x273faf0)>>> EHLO localhost.localdomain
Net::SMTP=GLOB(0x273faf0)<<< 250-server GMX Mailservices
Net::SMTP=GLOB(0x273faf0)<<< 250-8BITMIME
Net::SMTP=GLOB(0x273faf0)<<< …

我想使用下载文件DownloadManager。并DownloadManager希望获得WRITE_EXTERNAL_STORAGE许可。我已将WRITE_EXTERNAL_STORAGE许可包含在中AndroidManifest.xml。此外，我尝试在运行时获得此许可。

请求权限后立即调用onRequestPermissionsResult回调。没有显示请求权限弹出窗口。

然而，对价值grantResult[0]的onRequestPermissionsResult是PERMISSION_DENIED。但是，甚至没有显示“权限弹出窗口”。

我检查这样的许可：

public  boolean isStoragePermissionGranted() {
    if (Build.VERSION.SDK_INT >= 23) {
        if (checkSelfPermission(getContext(), android.Manifest.permission.WRITE_EXTERNAL_STORAGE)
                == PackageManager.PERMISSION_GRANTED) {
            Log.v(TAG,"Permission is granted");
            return true;
        } else {

            Log.v(TAG,"Permission is revoked");
            ActivityCompat.requestPermissions(getActivity(), new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE}, WRITE_EXTERNAL_PERMISSION_REQUEST_CODE);
            return false;
        }
    }
    else {
        Log.v(TAG,"Permission is granted");
        return true;
    }
}

这是权限请求的回调：

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults); …