2014年10月25日 星期六

itext-list

http://tutorials.jenkov.com/java-itext/list.html

u can add ordered and unordered lists to a PDF document using IText. List are represented by the class com.itextpdf.text.List. List items are represented by the classcom.itextpdf.text.ListItem.
Here is a simple code example:
import com.itextpdf.text.*;
import com.itextpdf.text.pdf.PdfWriter;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;

public class ListExample {

    public static void main(String[] args) {

        Document document = new Document();

        try {
            PdfWriter.getInstance(document,
                new FileOutputStream("List.pdf"));

            document.open();

            List orderedList = new List(List.ORDERED);
            orderedList.add(new ListItem("Item 1"));
            orderedList.add(new ListItem("Item 2"));
            orderedList.add(new ListItem("Item 3"));

            document.add(orderedList);

            List unorderedList = new List(List.UNORDERED);
            unorderedList.add(new ListItem("Item 1"));
            unorderedList.add(new ListItem("Item 2"));
            unorderedList.add(new ListItem("Item 3"));

            document.add(unorderedList);


            document.close();

        } catch (DocumentException e) {
            e.printStackTrace();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }

    }
}
Here is what the generated document looks like:
An IText List and ListItem example
An IText List and ListItem example

Roman and Greek Numerals

You can create lists with roman and greek numerals too. To do this, use thecom.itextpdf.text.RomanList and com.itextpdf.text.GreekList classes. Here is an example:
import com.itextpdf.text.*;
import com.itextpdf.text.pdf.PdfWriter;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;

public class List2Example {

    public static void main(String[] args) {

        Document document = new Document();

        try {
            PdfWriter.getInstance(document,
                new FileOutputStream("List2.pdf"));

            document.open();

            RomanList romanList = new RomanList();
            romanList.add(new ListItem("Item 1"));
            romanList.add(new ListItem("Item 2"));
            romanList.add(new ListItem("Item 3"));

            document.add(romanList);

            GreekList greekList = new GreekList();
            greekList.add(new ListItem("Item 1"));
            greekList.add(new ListItem("Item 2"));
            greekList.add(new ListItem("Item 3"));

            document.add(greekList);

            document.close();

        } catch (DocumentException e) {
            e.printStackTrace();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }

    }
}
Here is what the generated document looks like:
An IText RomanList and GreekList example
An IText RomanList and GreekList example

ZapfDingbatsList

IText has a special list implementation that uses the ZapfDingbats font. It's constructor takes two parameters: The number of the symbol to use as item bullet, and the indentation of the text after the bullet (space between bullet and text). Here is a code example:
import com.itextpdf.text.*;
import com.itextpdf.text.pdf.PdfWriter;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;

public class List3Example {

  public static void main(String[] args) {

    Document document = new Document();

    try {
      PdfWriter.getInstance(document,
            new FileOutputStream("List3.pdf"));

      document.open();

      ZapfDingbatsList zapfDingbatsList1 =
            new ZapfDingbatsList(40, 15);
      zapfDingbatsList1.add(new ListItem("Item 1"));
      zapfDingbatsList1.add(new ListItem("Item 2"));
      zapfDingbatsList1.add(new ListItem("Item 3"));

      document.add(zapfDingbatsList1);

      ZapfDingbatsList zapfDingbatsList2 =
            new ZapfDingbatsList(43, 30);
      zapfDingbatsList2.add(new ListItem("Item 1"));
      zapfDingbatsList2.add(new ListItem("Item 2"));
      zapfDingbatsList2.add(new ListItem("Item 3"));

      document.add(zapfDingbatsList2);

      ZapfDingbatsList zapfDingbatsList3 =
            new ZapfDingbatsList(47, 45);
      zapfDingbatsList3.add(new ListItem("Item 1"));
      zapfDingbatsList3.add(new ListItem("Item 2"));
      zapfDingbatsList3.add(new ListItem("Item 3"));

      document.add(zapfDingbatsList3);

      document.close();

    } catch (DocumentException e) {
      e.printStackTrace();
    } catch (FileNotFoundException e) {
      e.printStackTrace();
    }

  }
}
Here is what the generated document looks like:

An IText ZapfDingbatsList example
An IText ZapfDingbats example

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