springboot项目：生成pdf文件

骑猪看日落 2023-06-14 13:53 17阅读 0赞

#### 1、生成一个简单的pdf ####

*  创建springboot项目，这里不多说
 *  导入依赖

<dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>itextpdf</artifactId>
        <version>5.5.13</version>
    </dependency>
    
    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>itext-asian</artifactId>
        <version>5.2.0</version>
    </dependency>

*  生成一个helloword的pdf

package com.example.demo;
    
    import com.itextpdf.text.Document;
    import com.itextpdf.text.DocumentException;
    import com.itextpdf.text.PageSize;
    import com.itextpdf.text.Paragraph;
    import com.itextpdf.text.pdf.PdfWriter;
    import jdk.nashorn.internal.runtime.logging.Logger;
    import lombok.extern.slf4j.Slf4j;
    
    import java.io.FileNotFoundException;
    import java.io.FileOutputStream;
    import java.io.IOException;
    
    /** * @ClassName TestPdf * @Description 生成hello world * @Author 戴某某 * @Date 2019/11/19 20:29 * @Version 1.0 **/
    @Slf4j
    public class TestPdf { 
        
        private static final String FILE_NAME = "F:\\pdf\\helloPdf.pdf";
    
        public static void main(String[] args) throws IOException { 
            TestPdf pdf = new TestPdf();
            pdf.createPdf(FILE_NAME);
            log.info("打印完成");
        }
    
        /** * 生成一个hello world */
        public void createPdf(String filename)throws IOException { 
            Document document = new Document(PageSize.A4);
            try { 
                PdfWriter.getInstance(document, new FileOutputStream(filename));
                document.addTitle("example of PDF");
                document.open();
                document.add(new Paragraph("Hello World!"));
            } catch (FileNotFoundException e) { 
                e.printStackTrace();
            } catch (DocumentException e) { 
                e.printStackTrace();
            } finally { 
                document.close();
            }
        }
    }

#### 2、导出表格形式的pdf ####

/** * 生成带表格的pdf */
        public static PdfPTable createTable(PdfWriter writer) throws DocumentException, IOException { 
            //设置中文字体
            BaseFont bf = BaseFont.createFont( "STSong-Light", "UniGB-UCS2-H", false, false, null, null);
            Font fontChinese5 = new Font(bf,8);
    
            PdfPTable table = new PdfPTable(2);//生成一个两列的表格
            //表格垂直居中
            table.setHorizontalAlignment(Element.ALIGN_CENTER);
    
            PdfPCell cell;
            int size = 15;
            cell = new PdfPCell(new Paragraph("哈哈哈",fontChinese5));
            cell.setFixedHeight(size);//设置高度
    
            table.addCell(cell);
            cell = new PdfPCell(new Paragraph("two",fontChinese5));
            cell.setFixedHeight(size);
    
            table.addCell(cell);
            cell = new PdfPCell(new Paragraph("three",fontChinese5));
            cell.setFixedHeight(size);
    
            table.addCell(cell);
            cell = new PdfPCell(new Paragraph("four",fontChinese5));
            cell.setFixedHeight(size);
            table.addCell(cell);
            return table;
        }
    
        /** * 创建表 * @throws IOException */
        public void createPDF(String filename) throws IOException { 
            Document document = new Document(PageSize.A4);
            try { 
                PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(filename));
                document.addTitle("example of PDF");
                document.open();
                PdfPTable table = createTable(writer);
                document.add(table);
            } catch (FileNotFoundException e) { 
                e.printStackTrace();
            } catch (DocumentException e) { 
                e.printStackTrace();
            } finally { 
                document.close();
            }
    
        }

![在这里插入图片描述][20191119224243217.png]

#### 3、在看一个例子 ####

![在这里插入图片描述][2019111922465612.png]

public static PdfPTable createTable(PdfWriter writer) throws DocumentException, IOException { 
       //设置中文字体
        BaseFont bf = BaseFont.createFont( "STSong-Light", "UniGB-UCS2-H", false, false, null, null);
        Font fontChinese5 = new Font(bf,8);
    
        PdfPTable table = new PdfPTable(2);//生成一个两列的表格
        //表格垂直居中
        table.setHorizontalAlignment(Element.ALIGN_CENTER);
    
        PdfPCell cell;
        int size = 15;
        cell = new PdfPCell(new Paragraph("one",fontChinese5));
        cell.setFixedHeight(size);//设置高度
    
        table.addCell(cell);
        cell = new PdfPCell(new Paragraph("two",fontChinese5));
        cell.setFixedHeight(size);
    
        table.addCell(cell);
        cell = new PdfPCell(new Paragraph("three",fontChinese5));
        cell.setFixedHeight(size);
    
        table.addCell(cell);
        cell = new PdfPCell(new Paragraph("four",fontChinese5));
        cell.setFixedHeight(size);
    
        table.addCell(cell);
        cell = new PdfPCell(new Paragraph("five",fontChinese5));
        cell.setColspan(1);//设置所占列数
        cell.setRowspan(2);//合并行
        cell.setFixedHeight(size*2);//设置高度
        cell.setHorizontalAlignment(Element.ALIGN_CENTER);//设置水平居中
        cell.setVerticalAlignment(Element.ALIGN_MIDDLE);//设置垂直居中
        cell.setFixedHeight(size);
    
        table.addCell(cell);
    
        cell = new PdfPCell(new Paragraph("six",fontChinese5));
        cell.setFixedHeight(size);
    
        table.addCell(cell);
        cell = new PdfPCell(new Paragraph("seven",fontChinese5));
        cell.setFixedHeight(size);
        table.addCell(cell);
        return table;
    }

[20191119224243217.png]: https://img-blog.csdnimg.cn/20191119224243217.png
[2019111922465612.png]: https://img-blog.csdnimg.cn/2019111922465612.png