merge multiple pdf files into one using java

merge multiple pdf files into one using java

java merge pdf byte array

On those servers, EHLO will just return an error In that case, you must send a HELO command instead In the previous examples, we used sendmail() immediately after creating our SMTP object, so smtplib had to send its own hello message to the server But if it sees you attempt to send the EHLO or HELO command on your own, then sendmail() will no longer attempt to send these commands itself Listing 13 4 shows a program that gets the maximum size from the server, and returns an error before sending if a message would be too large Listing 13 4 Checking Message Size Restrictions #!/usr/bin/env python # SMTP transmission with manual EHLO - 13 - ehlopy import sys, smtplib, socket if len(sysargv) < 4: print "usage: %s server fromaddr toaddr [toaddr..]" % sysargv[0] sysexit(2) server, fromaddr, toaddrs = sysargv[1], sysargv[2], sys.

A close relative to the thread is the process, which can consist of several threads, but does not share memory and resources in the same intimate way that a thread does. Threads belonging to a single process share memory and resources and are all part of the same application. A process is what you usually refer to as another application. It has its own memory and resources and lives a life of its own. Qt handles processes through the QProcess class. If you start a process from your application, you communicate with it via channels (known as standard input, standard output, and standard error channels). These are the channels that are available to console applications, and the data is limited to streams of bytes.

argv[3:] message = """To: %s From: %s Subject: Test Message from simplepy Hello, This is a test message sent to you from the ehlopy program in Foundations of Python Network Programming """ % (', 'join(toaddrs), fromaddr) try:.

To text with processes that use the QProcess class, you ll build a small application that launches uic. The uic application is a nice one to play with because if you are a Qt developer you have access to it (it is bundled with Qt). The uic application produces output to both standard output and standard error. It can also handle some different arguments that you pass to it. The application using QProcess consists of a simple dialog class called ProcessDialog (refer to Figure 12-4). The class declaration can be seen in Listing 12-40. The highlighted lines show a range of slots matching the signals available from the QProcess class. Listing 12-40. The ProcessDialog class declaration class ProcessDialog : public QDialog { Q_OBJECT public: ProcessDialog(); private slots: void runUic(); void void void void void void handleError( QProcess::ProcessError ); handleFinish( int, QProcess::ExitStatus ); handleReadStandardError(); handleReadStandardOutput(); handleStarted(); handleStateChange( QProcess::ProcessState );

In this chapter, you have learned how to use the rich functionality within Microsoft s Visual Web Developer (VWD) to create blocks using the Popfly Block SDK. You ve learned how to edit a block s JavaScript file and block definition files in its editor. You ve also learned about VWD s debugging capabilities and how to use the Block SDK schema files to help write and validate block definition files. In the next chapter, we ll return to the Popfly web site and explore the Popfly block creation area.

s = smtplib.SMTP(server) code = s.ehlo()[0] uses_esmtp = (200 <= code <= 299) if not uses_esmtp: code = s.helo()[0] if not (200 <= code <= 299): print "Remote server refused HELO; code:", code sys.exit(1) if uses_esmtp and s.has_extn('size'): print "Maximum message size is", s.esmtp_features['size'] if len(message) > int(s.esmtp_features['size']): print "Message too large; aborting." sys.exit(1) s.sendmail(fromaddr, toaddrs, message)

private: QProcess *process; Ui::ProcessDialog ui; };

except (socket.gaierror, socket.error, socket.herror, smtplib.SMTPException), e: print " *** Your message may not have been sent!" print e sys.exit(1) else: print "Message successfully sent to %d recipient(s)" % len(toaddrs) If you run this program, and the remote server provides its maximum message size, then the program will display the size on your screen and verify that its message does not exceed that size before sending. (For a tiny message like this, the check is obviously silly, but the listing shows you the pattern that you can use successfully with much larger messages.) Here is what running this program might look like: $ ./ehlo.py localhost foo@example.com jgoerzen@complete.org Maximum message size is 10240000 Message successfully sent to 1 recipient(s) Take a look at the part of the code that verifies the result from a call to ehlo() or helo(). Those two functions return a list; the first item in the list is a numeric result code from the remote SMTP server. Results between 200 and 299, inclusive, indicate success; everything else indicates a failure. Therefore, if the result is within that range, you know that the server processed the message properly.

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