Printed series -- Java itext dynamic generation of PDF document tables

Java itext dynamic PDF generation
Document Table Chinese problems

Itext is a development source code project. You can use itext to conveniently implement PDF output. 1. Download itext:

You can view information about itext in the http://www.lowagie.com/iText/, including source code, documentation ..

1.
Itext-src-1.4.zip (source code)
Http://jaist.dl.sourceforge.net/sourceforge/itext/itext-src-1.4.zip

2. itext-1.4.jar (jar files that can be imported directly)

Http://jaist.dl.sourceforge.net/sourceforge/itext/itext-1.4.jar

3. Asian Language Pack

Http://itextdocs.lowagie.com/downloads/iTextAsian.jar
(Or)

Http://itextdocs.lowagie.com/downloads/iTextAsianCmaps.jar

Ii. Example program:

First, add the complete paths of these jar packages to the environment variables.
Classpath, and then the following program

Import the corresponding package

1. /**
2. * Helloworld. Java
3. */
5. Import java. Io. fileoutputstream;
6. Import java. Io. ioexception;
8. Import com. lowagie. Text .*;
9. Import com.lowagie.text=. writable writer;
11. Public class helloworld {
13. Public static void main (string [] ARGs ){
15. System. Out. println ("Hello World ");
17. // Create a Document Object
18. Document document = new document ();
20. Try
21. {
23. // Generate a document named helloworldworkflow
24. Using writer. getinstance (document, new fileoutputstream ("helloworldworkflow "));
26. // Add some information about the PDF document
27. Document. addtitle ("Hello world example ");
28. Document. addauthor ("Bruno lowagie ");
29. Document. addsubject ("this example explains how to add metadata .");
30. Document. addkeywords ("itext, hello World, step 3, metadata ");
31. Document. addcreator ("My program using itext ");
33. // Open the document and write the content
34. Document. open ();
36. // Insert a paragraph
37. Document. Add (new paragraph ("Hello world! "));
39. }
40. Catch (incluentexception de)
41. {
42. System. Err. println (De. getmessage ());
43. }
44. Catch (ioexception IOE)
45. {
46. System. Err. println (IOE. getmessage ());
47. }
49. // Close the opened document
50. Document. Close ();
51. }
52. }

After compilation and operation, we can find the generated helloworldworkflow in the running directory, and open it to see the text we wrote:

Hello World

Iii. Chinese problems:

Because itext does not support the East Asian language, we downloadedItextasian. JarLater, you can write Chinese Characters in PDF:

1. /**
2. * Asiantest. Java
3. */
5. Import java. Io. fileoutputstream;
6. Import java. Io. ioexception;
8. Import com. lowagie. Text .*;
9. Import com.lowagie.text=. writable writer;
10. Import com.lowagie.text=. basefont;
11. Import com. lowagie. Text. Font;
12. Import java. AWT. color;
14. Public class asiantest {
16. Public static void main (string [] ARGs ){
18. // Create a Document Object
19. Document document = new document ();
21. Try
22. {
24. // Generate a document named asiantest.pdf
25. Using writer. getinstance (document, new fileoutputstream ("asiantest.pdf "));
27. /** Create a new font, itext Method
28. * Stsongstd-light is a font and is suffixed with property in itextasian. jar.
29. * The UniGB-UCS2-H is encoded and suffixed with cmap in itextasian. Jar
30. * H indicates that the text layout is horizontal and the corresponding V indicates the vertical layout.
31. */
32. Basefont bfchinese = basefont. createfont ("stsongstd-light", "UniGB-UCS2-H", false );
34. Font fontchinese = new font (bfchinese, 12, Font. Normal, color. Green );
36. // Open the document and write the content
37. Document. open ();
39. // Insert a paragraph
40. Paragraph par = new paragraph ("we", fontchinese );
42. Document. Add (PAR );
44. }
45. Catch (incluentexception de)
46. {
47. System. Err. println (De. getmessage ());
48. }
49. Catch (ioexception IOE)
50. {
51. System. Err. println (IOE. getmessage ());
52. }
54. // Close the opened document
55. Document. Close ();
56. }
57. }

Then you can display Chinese characters.

4. Other problems: (the corresponding package should be imported)

1.
Form feed:

1. Document. Newpage ();

2. Table:

1. // Set the table
2. Table atable = new Table (3 );
3. Int width [] = {25, 25, 50 };
4. Atable. setwidths (width );
5. Atable. setwidth (80); // 80% of the page width
7. Atable. setdefaulthorizontalalignment (element. align_left );
8. Atable. setdefaververticalalignment (element. align_middle );
9. Atable. setautofillemptycells (true); // automatically fills up
10. Atable. setpadding (1 );
11. Atable. setspacing (1 );
12. Atable. setdefaultcellborder (0 );
13. Atable. setborder (0 );
15. Cell cell = new cell (new phrase ("this is a test of 3*3 table data", fontchinese ));
16. Cell. setverticalalignment (element. align_top );
17. Cell. setrowspan (3 );
18. Atable. addcell (cell );
20. Atable. addcell (New Cell ("#1 "));
21. Atable. addcell (New Cell ("#2 "));
22. Atable. addcell (New Cell ("#3 "));
24. Atable. addcell (New Cell ("#4 "));
25. Atable. addcell (New Cell ("#5 "));
26. Atable. addcell (New Cell ("#6 "));
28. Document. Add (atable );

3. Image:

1. // It can be an absolute path or a URL
2. Image IMG = image. getinstance ("logo.gif ");
4. // Image = image. getinstance (new URL (http://xxx.com/logo.jpg ));
6. IMG. setabsoluteposition (0, 0 );
8. Document. Add (IMG );

V. References:

• Itext
  Http://www.lowagie.com/iText/
  
• Itext
  API:
  Http://itext.sourceforge.net/docs/

  Http://www.sentom.net/list.asp? Id = 42