how to add image in pdf using itext in java

how to add image in pdf using itext in java

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finally: p.quit() The list() function returns a tuple containing three items; you should generally pay attention to the second item. Here is its raw output for one of my POP mailboxes at the moment, which has three messages in it: ('+OK 3 messages (5675 bytes)', ['1 2395', '2 1626', '3 1654'], 24) The three strings inside the second item give the message number and size for each of the three messages in my in-box. The simple parsing performed by Listing 14 3 lets it present the output in a prettier format: $ ./mailbox.py popserver.example.com testuser Password: Message 1 has 2395 bytes Message 2 has 1626 bytes Message 3 has 1654 bytes

Minimize the Tutorial window by clicking the >> button. Expand the My Blocks section of the Blocks window, and locate the MyTechnoratiBlock block. Drag and drop it onto the canvas (see Figure 10-14). Place the mouse over the block to show the block s help tip. The operation we wrote, getSearchResults, is the default and only operation displayed, with its sole parameter query and the default value of Popfly. Double-click the block to display the simple view of the operation (see Figure 10-15), which shows the information we defined in the block description. There is no drop-down menu of operations, because our block has only one. The description of the operation, also retrieved from our block definition, is displayed before the operation name. The parameters list displays the query variable, and the default value Popfly has been entered in the textbox.

Another clause that can be used with the SELECT statement is GROUP BY, which divides the results into groups. It can be combined with the COUNT(*) function, which means the number or rows found. If you group by last names, you can count the number of members of each family: SELECT lastname, COUNT(*) as 'members' FROM names GROUP BY lastname ORDER BY lastname The results from the command are shown in the following table. I named the calculated column members by using the AS keyword. I also sorted the on the lastname column so that the last names appear in alphabetical order:

You should now be getting the hang of POP: when using poplib you get to issue small atomic commands that always return a tuple inside which are various strings and lists of strings showing you the result. We are now ready to actually manipulate messages! The three relevant methods, which all identify messages using the same integer identifiers that are returned by list(), are these: retr(num): This method downloads a single message and returns a tuple containing a result code and the message itself, delivered as a list of lines. This will cause most POP servers to set the seen flag for the message to true, barring you from ever seeing it from POP again (unless you have another way into your mailbox that lets you set messages back to Unread ). top(num, body_lines):This method returns its result in the same format as retr() without marking the message as seen. But instead of returning the whole message, it just returns the headers plus however many lines of the body you ask for in body_lines. This is useful for previewing messages if you want to let the user decide which ones to download. dele(num): This method marks the message for deletion from the POP server, to take place when you quit this POP session. Typically you would do this only if the user directly requests irrevocable destruction of the message, or if you have stored the message to disk and used something like fsync() to assure the data s safety.

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To put everything together, take a look at Listing 14 4, which is a fairly functional e-mail client that speaks POP! It checks your in-box to determine how many messages there are and to learn what their numbers are; then it uses top() to offer a preview of each one; and, at the user s option, it can retrieve the whole message, and can also delete it from the mailbox. Listing 14 4. A Simple POP E-mail Reader #!/usr/bin/env python # POP mailbox downloader with deletion - 14 # download-and-delete.py import email, getpass, poplib, sys

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