java生成PDF的Util-编程知识

java使用itext生成pdf-CSDN博客
接上文
支持绘制表格
支持表格中的文本字体加粗、字体上色、单元格背景上色，
支持拼接文本
支持单行文本多种背景颜色、字体上色
支持自定义水印
废话不说先上效果图
工具类代码
package com.zxw.文件.PDF.util;import com.itextpdf.text.*;
import com.itextpdf.text.pdf.*;
import com.itextpdf.text.pdf.draw.LineSeparator;
import lombok.SneakyThrows;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import org.springframework.util.ObjectUtils;import java.io.IOException;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;/*** @projectName: ruoyi* @package: com.zxw.文件.PDF.util* @className: PDFUtil* @author: zhangxuewei* @description: TODO* @date: 2023/9/18 14:31* @version: 1.0*/
@Component
public class PDFUtil {public static String fontAddr;public static TableCell tableCell = new TableCell();@Value("${fontAddr}")public void setFontAddr(String fontAddr) {PDFUtil.fontAddr = fontAddr;}public static BaseFont getNormalBaseFont() throws IOException, DocumentException {BaseFont bf = BaseFont.createFont(fontAddr, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);return bf;}public static Font getNormalFont(BaseFont bf) {Font font = new Font(bf, 12);return font;}/*** 获取创建段落的类** @param font* @param fontSize 字体大小* @throws DocumentException*/public static Paragraph getParagraph(Font font, Float fontSize) {if (!ObjectUtils.isEmpty(fontSize)) {font.setSize(fontSize);}// 添加中文内容Paragraph paragraph = new Paragraph();paragraph.setFont(font);return paragraph;}/*** 获取创建段落的类** @param font* @param fontSize 字体大小* @param info     写入信息* @throws DocumentException*/public static Paragraph getParagraphAndWrite(Font font, Float fontSize, String info) {Paragraph paragraph = getParagraph(font, fontSize);// 添加中文内容paragraph.add(new Chunk(info));return paragraph;}/*** 拼接写入带有颜色的文本** @param paragraph       创建段落对象* @param info            写入的文本* @param backgroundColor 文本背景颜色* @return*/public static Paragraph appendWithBackgroundColor(Paragraph paragraph, String info, BaseColor backgroundColor) {// 添加中文内容Chunk chunk = new Chunk(info);if (!ObjectUtils.isEmpty(backgroundColor)) {chunk.setBackground(backgroundColor); // 根据索引获取背景颜色}paragraph.add(chunk);return paragraph;}/*** 拼接写入带有颜色的文本结束的方法** @param paragraph       创建段落对象* @param info            写入的文本* @param backgroundColor 文本背景颜色* @param document        文档对象* @throws DocumentException*/public static void appendWithBackgroundColorEnd(Paragraph paragraph, String info, BaseColor backgroundColor, Document document) throws DocumentException {appendWithBackgroundColor(paragraph, info, backgroundColor);document.add(paragraph);}/*** 正常书写** @param document* @param font* @param fontSize 字体大小* @param info     写入信息* @throws DocumentException*/public static void writeParagraph(Document document, Font font, Float fontSize, String info) throws DocumentException {if (!ObjectUtils.isEmpty(fontSize)) {font.setSize(fontSize);}// 添加中文内容Paragraph paragraph = new Paragraph(info, font);document.add(paragraph);}/*** 书写加粗的文字** @param document* @param bf* @param fontSize 字体大小* @param info     写入信息* @throws DocumentException*/public static void writeBoldParagraph(Document document, BaseFont bf, Float fontSize, String info) throws DocumentException {Font font = PDFUtil.getNormalFont(bf);font.setStyle(Font.BOLD);// 添加中文内容writeParagraph(document, font, fontSize, info);}/*** 书写带有颜色的字体** @param document* @param font* @param fontSize* @param fontColor* @throws DocumentException*/public static void writeColorParagraph(Document document, Font font, Float fontSize, BaseColor fontColor, String info) throws DocumentException {if (!ObjectUtils.isEmpty(fontColor))font.setColor(fontColor);writeParagraph(document, font, fontSize, info);}/*** 书写带有颜色的加粗字体** @param document* @param bf* @param fontSize* @param fontColor* @throws DocumentException*/public static void writeBoldColorParagraph(Document document, BaseFont bf, float fontSize, BaseColor fontColor, String info) throws DocumentException {Font font = PDFUtil.getNormalFont(bf);font.setStyle(Font.BOLD);writeColorParagraph(document, font, fontSize, fontColor, info);}/*** 书写带有颜色背景的字体** @param document* @param font* @param fontSize* @param backgroundColor 背景颜色* @param info* @throws DocumentException*/public static void writeColorBackgroundParagraph(Document document, Font font, float fontSize, BaseColor backgroundColor, String info) throws DocumentException {if (fontSize > 0) {font.setSize(fontSize);}Chunk chunk = new Chunk(info, font);chunk.setBackground(backgroundColor);Paragraph paragraphcb = new Paragraph();paragraphcb.add(chunk);document.add(paragraphcb);}/*** 书写带有颜色背景的加粗字体** @param document* @param font* @param fontSize* @param backgroundColor* @param info* @throws DocumentException*/public static void writeBoldColorBackgroundParagraph(Document document, Font font, float fontSize, BaseColor backgroundColor, String info) throws DocumentException {font.setStyle(Font.BOLD);writeColorBackgroundParagraph(document, font, fontSize, backgroundColor, info);}/*** 书写带有颜色背景的彩色字体** @param document* @param font* @param fontSize* @param backgroundColor* @param fontColor* @param info* @throws DocumentException*/public static void writeColorBackgroundColorFontParagraph(Document document, Font font, float fontSize, BaseColor backgroundColor, BaseColor fontColor, String info) throws DocumentException {if (fontSize > 0) {font.setSize(fontSize);}font.setColor(fontColor);Chunk chunk = new Chunk(info, font);chunk.setBackground(backgroundColor);Paragraph paragraphcb = new Paragraph();paragraphcb.add(chunk);document.add(paragraphcb);}/*** 书写带有颜色背景的彩色加粗字体** @param document* @param font* @param fontSize* @param backgroundColor* @param fontColor* @param info* @throws DocumentException*/public static void writeBoldColorBackgroundColorFontParagraph(Document document, Font font, float fontSize, BaseColor backgroundColor, BaseColor fontColor, String info) throws DocumentException {font.setStyle(Font.BOLD);writeColorBackgroundColorFontParagraph(document, font, fontSize, backgroundColor, fontColor, info);}/*** 画线** @param document* @param percentage 所占页面宽度的百分比* @param alignment  对齐方式  如：Element.ALIGN_RIGHT* @throws DocumentException*/public static void drawLine(Document document, float percentage, int alignment) throws DocumentException {LineSeparator line = new LineSeparator();line.setPercentage(percentage);line.setAlignment(alignment);line.setLineWidth(1);document.add(line);}/*** 书写表格** @param document* @param font* @param fontSize* @param numColumns* @param data* @throws DocumentException*/public static void writeTable(Document document, Font font, Float fontSize, int numColumns, BaseColor borderColor, List<Map<Integer, String>> data) throws DocumentException {PdfPTable table = new PdfPTable(numColumns); // 3列的表格table.setWidthPercentage(100);// 表格将占据整个页面的宽度table.setSpacingBefore(10f);// 表格与上面的内容之间将有 10 磅的间距table.setSpacingAfter(10f);// 表格与下面的内容之间将有 10 磅的间距for (int i = 0; i < data.size(); i++) {Map<Integer, String> sortedMap = data.get(i).entrySet().stream().sorted(Map.Entry.comparingByKey()).collect(Collectors.toMap(Map.Entry::getKey,Map.Entry::getValue,(e1, e2) -> e1, // 如果有重复键，保留第一个LinkedHashMap::new // 保持顺序));sortedMap.forEach((key, item) -> {PdfPCell cell = new PdfPCell(getParagraphAndWrite(font, fontSize, item));if (!ObjectUtils.isEmpty(borderColor)) {cell.setBorderColor(borderColor);} else {cell.setBorder(PdfPCell.NO_BORDER);}cell.setHorizontalAlignment(Element.ALIGN_CENTER);cell.setVerticalAlignment(Element.ALIGN_MIDDLE);cell.setPadding(5);table.addCell(cell);});}document.add(table);}/*** 书写表格** @param document     文档对象* @param columnWidths 列宽* @param bf           字体基础配置* @param borderColor  表格边框颜色* @param data* @throws DocumentException*/public static void writeTable(Document document, float[] columnWidths, BaseFont bf, BaseColor borderColor, List<Map<Integer, TableCell>> data) throws DocumentException {PdfPTable table = new PdfPTable(columnWidths.length); // 3列的表格table.setWidthPercentage(100);// 表格将占据整个页面的宽度table.setSpacingBefore(10f);// 表格与上面的内容之间将有 10 磅的间距table.setSpacingAfter(10f);// 表格与下面的内容之间将有 10 磅的间距table.setWidths(columnWidths);for (int i = 0; i < data.size(); i++) {Map<Integer, TableCell> sortedMap = data.get(i).entrySet().stream().sorted(Map.Entry.comparingByKey()).collect(Collectors.toMap(Map.Entry::getKey,Map.Entry::getValue,(e1, e2) -> e1, // 如果有重复键，保留第一个LinkedHashMap::new // 保持顺序));sortedMap.forEach((key, item) -> {TableCell tableCell = item;Font font = PDFUtil.getNormalFont(bf);if (tableCell.isBold())font.setStyle(Font.BOLD);if (!ObjectUtils.isEmpty(tableCell.getFontColor()))font.setColor(tableCell.getFontColor());if (!ObjectUtils.isEmpty(tableCell.getFontSize()))font.setSize(tableCell.getFontSize());Chunk chunk = new Chunk(tableCell.getCellDataInfo(), font);if (!ObjectUtils.isEmpty(tableCell.getFontBackgroundColor()))chunk.setBackground(tableCell.getFontBackgroundColor());Paragraph paragraph = new Paragraph(chunk);PdfPCell cell = new PdfPCell(paragraph);if (!ObjectUtils.isEmpty(borderColor))cell.setBorderColor(borderColor);elsecell.setBorder(PdfPCell.NO_BORDER);if (!ObjectUtils.isEmpty(tableCell.getCellBackgroundColor()))cell.setBackgroundColor(tableCell.getCellBackgroundColor());if (!ObjectUtils.isEmpty(tableCell.getCellAlign()))cell.setHorizontalAlignment(tableCell.getCellAlign());elsecell.setHorizontalAlignment(Element.ALIGN_CENTER);cell.setVerticalAlignment(Element.ALIGN_MIDDLE);cell.setPadding(5);table.addCell(cell);});}document.add(table);}}
gitee地址：util-cloud: 小工具
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