java使用IText将数据导出为pdf文件(数据为excel表格样式）

1.pom.xml导入使用的jar包

       <dependency>
            <groupId>com.itextpdf</groupId>
            <artifactId>itext-pdfa</artifactId>
            <version>5.5.0</version>
        </dependency>
        <dependency>
            <groupId>com.itextpdf</groupId>
            <artifactId>itext-asian</artifactId>
            <version>5.2.0</version>
        </dependency>

2.直接上代码（数据导出为pdf文件，数据呈现样式为自定义excel表格样式，支持多页展示）

public class DataToPdf {
    public static final String DEST = "pdf/tables.pdf";

    public static void main(String[] args) throws IOException, DocumentException {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new DataToPdf().dataToPdf(DEST);
    }

    /**
     * 数据转pdf
     * @param dest
     * @throws IOException
     * @throws DocumentException
     */
    public void dataToPdf(String dest) throws IOException, DocumentException {
        Document document = new Document();
        PdfWriter.getInstance(document, new FileOutputStream(dest));
        document.open();

        // 使用语言包字体
        BaseFont abf = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H",BaseFont.NOT_EMBEDDED);
        //字体
        Font font = new Font(abf, 8);

        //段落
        Paragraph p = new Paragraph("测试结算单", new Font(abf, 12, Font.BOLD));
        p.setAlignment(Paragraph.ALIGN_CENTER);
        document.add(p);

        //表格
        PdfPTable table = new PdfPTable(8);//numcolumns:列数
        table.setSpacingBefore(16f);//表格与上面段落的空隙

        //表格列创建并赋值
        PdfPCell cell = new PdfPCell(new Phrase("单位名称：测试有限公司", font));
        cell.setHorizontalAlignment(Element.ALIGN_LEFT);//居中
        cell.disableBorderSide(13);//去除左右上边框，保留下边框
        cell.setColspan(4);//合并列数
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("日期：2020-06-05", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        cell.disableBorderSide(13);
        cell.setColspan(3);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("单位（元）", font));
        cell.setHorizontalAlignment(Element.ALIGN_LEFT);
        cell.disableBorderSide(13);
        cell.setColspan(1);
        table.addCell(cell);
        //首行
        cell = new PdfPCell(new Phrase("期间", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        cell.setColspan(2);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("月份", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("分类", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("年利率", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("日利率", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("基数", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("利息", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);

        cell = new PdfPCell(new Phrase("起始日：2020-03-26
" +
                "结束日：2020-04-25", font));
        cell.setPadding(16f);
        cell.setVerticalAlignment(Element.ALIGN_CENTER);
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        cell.setRowspan(3);
        cell.setColspan(2);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("4", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("资金", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("1.10%", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("0.000031", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("10598164.91", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("325.01", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);

        cell = new PdfPCell(new Phrase("4", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("资金", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("1.10%", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("0.000031", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("-", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("-", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);

        cell = new PdfPCell(new Phrase("4", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("资金", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("1.10%", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("0.000031", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("-", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("-", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);

        cell = new PdfPCell(new Phrase("合计", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        cell.setColspan(7);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("325.01", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);

        cell = new PdfPCell(new Phrase("会计制单:", font));
        cell.setHorizontalAlignment(Element.ALIGN_LEFT);
        cell.disableBorderSide(14);
        cell.setColspan(4);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("复核:", font));
        cell.setHorizontalAlignment(Element.ALIGN_LEFT);
        cell.disableBorderSide(14);
        cell.setColspan(4);
        table.addCell(cell);
        table.setSpacingBefore(16f);
        document.add(table);

        //下一页
        document.newPage();
        //段落
        Paragraph p1 = new Paragraph("下一页测试结算单", new Font(abf, 12, Font.BOLD));
        p1.setAlignment(Paragraph.ALIGN_CENTER);
        document.add(p1);

        //表格
        table = new PdfPTable(8);//numcolumns:列数
        table.setSpacingBefore(16f);//表格与上面段落的空隙

        //表格列创建并赋值
        cell = new PdfPCell(new Phrase("单位名称：测试有限公司", font));
        cell.setHorizontalAlignment(Element.ALIGN_LEFT);//居中
        cell.disableBorderSide(13);//去除左右上边框，保留下边框
        cell.setColspan(4);//合并列数
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("日期：2020-06-05", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        cell.disableBorderSide(13);
        cell.setColspan(3);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("单位（元）", font));
        cell.setHorizontalAlignment(Element.ALIGN_LEFT);
        cell.disableBorderSide(13);
        cell.setColspan(1);
        table.addCell(cell);
        //首行
        cell = new PdfPCell(new Phrase("期间", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        cell.setColspan(2);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("月份", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("分类", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("年利率", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("日利率", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("基数", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("利息", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);

        cell = new PdfPCell(new Phrase("起始日：2020-04-26
" +
                "结束日：2020-05-25", font));
        cell.setPadding(16f);
        cell.setVerticalAlignment(Element.ALIGN_CENTER);
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        cell.setColspan(2);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("4", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("资金", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("1.10%", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("0.000031", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("10598164.91", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("325.01", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);

        cell = new PdfPCell(new Phrase("合计", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        cell.setColspan(7);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("325.01", font));
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);
        table.addCell(cell);

        cell = new PdfPCell(new Phrase("会计制单:", font));
        cell.setHorizontalAlignment(Element.ALIGN_LEFT);
        cell.disableBorderSide(14);
        cell.setColspan(4);
        table.addCell(cell);
        cell = new PdfPCell(new Phrase("复核:", font));
        cell.setHorizontalAlignment(Element.ALIGN_LEFT);
        cell.disableBorderSide(14);
        cell.setColspan(4);
        table.addCell(cell);
        table.setSpacingBefore(16f);
        document.add(table);

        document.close();
    }
}

3.上述代码中对于IText字体设置可改：

使用iText中的字体 

   例：BaseFont.createFont("STSong-Light", "UniGB-UCS2-H",BaseFont.NOT_EMBEDDED);  

使用Windows系统自带的字体

   例：BaseFont.createFont("C:/WINDOWS/Fonts/SIMYOU.TTF", BaseFont.IDENTITY_H,BaseFont.NOT_EMBEDDED);    

使用外部引入的资源字体(

   例：BaseFont.createFont("/SIMYOU.TTF", BaseFont.IDENTITY_H,BaseFont.NOT_EMBEDDED);    

4.上述代码生成的表格边框隐藏方式：

1：代表上边框

2：代表下边框

4：代表左边框

8：代表右边框
//需要隐藏那些边框就把对应的值加起来，得到的和就是要设置的值
//比如要隐藏左右边框 就是 4+8=12
cell.disableBorderSide(12);//左右没了

 具体例子：

//隐藏上边框
cell.disableBorderSide(1);

//隐藏下边框
cell.disableBorderSide(2);

//隐藏上、下边框
cell.disableBorderSide(3);

//隐藏左边框
cell.disableBorderSide(4);

//隐藏左、上边框
cell.disableBorderSide(5);

//隐藏左、下边框
cell.disableBorderSide(6);

//隐藏左、上、下边框
cell.disableBorderSide(7);

//隐藏右边框
cell.disableBorderSide(8);

//隐藏右、上边框
cell.disableBorderSide(9);

//隐藏右、下边框
cell.disableBorderSide(10);

//隐藏右、上、下边框
cell.disableBorderSide(11);

//隐藏左、右边框
cell.disableBorderSide(12);//左右没了

 //隐藏上、左、右边框
cell.disableBorderSide(13);//只剩下

 //隐藏下、左、右边框
cell.disableBorderSide(14);//只剩上 

//隐藏全部
cell.disableBorderSide(15);//全没了

5.运行展示效果

 例：