IText

IText

iText is a software developer toolkit that allows users to integrate PDF functionalities within their applications, processes or products.

Hello World

• Import jar

<!-- https://mvnrepository.com/artifact/com.itextpdf/itextpdf -->
<dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>itextpdf</artifactId>
    <version>5.5.11</version>
</dependency>

• SimpleDemo

import com.itextpdf.text.*;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;
import org.junit.Test;

import java.io.FileOutputStream;
public class ITextTest {

    // 表头
    public static final String[] tableHeader= { "Name", "Sex", "Age",
            "hobby", "phone", "class"};

    // 数据表字段数
    private static final int colNumber = 6;

    // 表格的设置
    private static final int spacing = 2;

    // 表格的设置
    private static final int padding = 2;

    // 导出Pdf文挡
    public static void exportPdfDocument() {
        // 创建文Pdf文挡50, 50, 50,50左右上下距离
        Document document = new Document(new Rectangle(1500, 2000), 50, 50, 50,
                50);
        try {
            //使用PDFWriter进行写文件操作
            PdfWriter.getInstance(document,new FileOutputStream(
                    "学生信息.pdf"));
            document.open();
            // 中文字体
            BaseFont bfChinese = BaseFont.createFont();

            Font fontChinese = new Font(bfChinese, 12, Font.NORMAL);
            // 创建有colNumber(6)列的表格
            PdfPTable datatable = new PdfPTable(colNumber);
            //定义表格的宽度
            int[] cellsWidth = { 8, 2,2, 8, 5, 3 };
            datatable.setWidths(cellsWidth);
            // 表格的宽度百分比
            datatable.setWidthPercentage(100);
            datatable.getDefaultCell().setPadding(padding);
            datatable.getDefaultCell().setBorderWidth(spacing);
            //设置表格的底色
            datatable.getDefaultCell().setBackgroundColor(BaseColor.WHITE);
            datatable.getDefaultCell().setHorizontalAlignment(
                    Element.ALIGN_CENTER);
            // 添加表头元素
            for (int i = 0; i <colNumber; i++) {
                datatable.addCell(new Paragraph(tableHeader[i], fontChinese));
            }
            // 添加子元素
            for (int i = 0; i <colNumber; i++) {
                datatable.addCell(new Paragraph(tableHeader[i], fontChinese));
            }
            document.add(datatable);
        } catch (Exception e) {
            e.printStackTrace();
        }
        document.close();
    }

    @Test
    public void exportPdfDocumentTest() {
        exportPdfDocument();
    }

}

运行测试后可以生成对应的 pdf 文件。