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@ -1,20 +1,25 @@
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package com.ruoyi.gysl.service.impl;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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import com.itextpdf.html2pdf.ConverterProperties;
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import com.itextpdf.html2pdf.HtmlConverter;
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import com.itextpdf.io.image.ImageData;
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import com.itextpdf.io.image.ImageDataFactory;
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import com.itextpdf.kernel.colors.ColorConstants;
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import com.itextpdf.kernel.colors.DeviceRgb;
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import com.itextpdf.kernel.geom.PageSize;
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import com.itextpdf.kernel.pdf.PdfDocument;
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import com.itextpdf.kernel.pdf.PdfReader;
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import com.itextpdf.kernel.pdf.PdfWriter;
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import com.itextpdf.kernel.utils.PdfMerger;
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import com.itextpdf.layout.Document;
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import com.itextpdf.layout.element.*;
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import com.itextpdf.layout.properties.AreaBreakType;
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import com.itextpdf.layout.element.AreaBreak;
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import com.itextpdf.layout.element.Image;
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import com.itextpdf.layout.element.Paragraph;
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import com.itextpdf.layout.properties.HorizontalAlignment;
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import com.itextpdf.layout.properties.TextAlignment;
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import com.itextpdf.layout.properties.UnitValue;
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import com.ruoyi.common.config.RuoYiConfig;
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import com.ruoyi.common.constant.Constants;
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import com.ruoyi.common.core.domain.AjaxResult;
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import com.ruoyi.common.exception.ServiceException;
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import com.ruoyi.common.utils.StringUtils;
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import com.ruoyi.common.utils.file.FileUtils;
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@ -27,9 +32,16 @@ import org.springframework.stereotype.Service;
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import javax.annotation.Resource;
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import javax.servlet.http.HttpServletResponse;
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import java.io.FileNotFoundException;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.net.MalformedURLException;
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import java.nio.file.Files;
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import java.nio.file.Paths;
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import java.rmi.ServerError;
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import java.util.Arrays;
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import java.util.List;
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/**
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* 项目手册(GyslProjectHandbook)表服务实现类
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@ -44,163 +56,80 @@ public class GyslProjectHandbookServiceImpl extends ServiceImpl<ProjectHandBookM
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private BasicInformationMapper basicInformationMapper;
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/**
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* 生成pdf
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*/
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@Override
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public void generatePdfs(HttpServletResponse response, Integer id) throws FileNotFoundException, MalformedURLException {
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//获取当前手册信息
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GyslProjectHandbook byId = getById(id);
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//获取手册对应项目信息
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java.util.List<BasicInformationResponse> basicInfoList = basicInformationMapper.idListToProject
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(Arrays.asList(byId.getXmId().split(",")));
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public void generatePdfs(HttpServletResponse response, Integer id) throws IOException {
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// 获取数据
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GyslProjectHandbook handbook = getById(id);
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List<BasicInformationResponse> basicInfoList = basicInformationMapper.idListToProject(
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Arrays.asList(handbook.getXmId().split(",")));
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// 设置响应头
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response.setContentType("application/pdf");
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response.setHeader("Content-Disposition", "attachment; filename=\"product_catalog.pdf\"");
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try (
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// 直接绑定到 response 的输出流（不再生成本地文件）
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PdfDocument pdf = new PdfDocument(new PdfWriter(response.getOutputStream()));
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Document document = new Document(pdf)
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) {
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addCoverPage(document, byId);
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addTableOfContents(document, basicInfoList);
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addProductPages(document, basicInfoList);
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try (OutputStream outputStream = response.getOutputStream();
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PdfWriter writer = new PdfWriter(outputStream);
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PdfDocument mergedPdf = new PdfDocument(writer)) { // 主文档生命周期由外部try控制
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// ========== 封面页 ==========
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Document coverDoc = new Document(mergedPdf);
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addCoverPage(coverDoc, handbook);
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coverDoc.close(); // 关闭封面Document但不关闭PdfDocument
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// ========== 动态内容合并 ==========
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String htmlContent = "<!DOCTYPE html><html><body style='font-family: SimSun;'>动态内容</body></html>";
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try (ByteArrayOutputStream tempStream = new ByteArrayOutputStream()) {
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// HTML转PDF
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HtmlConverter.convertToPdf(htmlContent, tempStream);
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// 合并到主文档
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try (PdfReader tempReader = new PdfReader(new ByteArrayInputStream(tempStream.toByteArray()));
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PdfDocument tempPdf = new PdfDocument(tempReader)) {
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PdfMerger merger = new PdfMerger(mergedPdf);
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merger.merge(tempPdf, 1, tempPdf.getNumberOfPages());
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}
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}
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} catch (Exception e) {
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response.reset(); // 清除已写入的内容
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response.reset();
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response.setContentType("application/json");
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response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
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throw new RuntimeException("PDF生成失败", e);
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throw new ServiceException("错误!");
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}
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}
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/**
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* 封面页设计
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*/
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@Override
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public void addCoverPage(Document document, GyslProjectHandbook gyslProjectHandbook) throws MalformedURLException {
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//添加手册名称
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Paragraph coverTitle = new Paragraph(gyslProjectHandbook.getName())
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.setFontSize(30)
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.setBold()
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.setFontColor(ColorConstants.BLUE)
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public void addCoverPage(Document document, GyslProjectHandbook handbook) throws MalformedURLException {
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// 标题
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Paragraph title = new Paragraph(handbook.getName())
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.setFontSize(30).setBold().setFontColor(ColorConstants.BLUE)
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.setTextAlignment(TextAlignment.CENTER)
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.setMarginTop(200); // 垂直居中
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document.add(coverTitle);
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//添加副标题
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Paragraph ft = new Paragraph(gyslProjectHandbook.getSubtitle())
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.setFontSize(22)
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.setFontColor(ColorConstants.BLUE)
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.setMarginTop(60);
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document.add(title);
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// 副标题
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Paragraph subtitle = new Paragraph(handbook.getSubtitle())
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.setFontSize(22).setFontColor(ColorConstants.BLUE)
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.setTextAlignment(TextAlignment.RIGHT)
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.setMarginTop(300); // 垂直居中
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document.add(ft);
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//添加封面图片
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try {
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if (!FileUtils.checkAllowDownload(gyslProjectHandbook.getCoverImg())) {
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throw new ServiceException("资源文件({})非法! ");
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}
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// 本地资源路径
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String localPath = RuoYiConfig.getProfile();
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// 数据库资源地址
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String downloadPath = localPath + StringUtils.substringAfter(gyslProjectHandbook.getCoverImg(), Constants.RESOURCE_PREFIX);
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ImageData imageData = ImageDataFactory.create(downloadPath);
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Image image = new Image(imageData).setWidth(300).setHorizontalAlignment(HorizontalAlignment.CENTER);
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document.add(image);
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} catch (Exception e) {
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throw new ServiceException("下载文件失败! ");
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.setMarginTop(70);
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document.add(subtitle);
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// 封面图片
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String imgPath = RuoYiConfig.getProfile() +
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StringUtils.substringAfter(handbook.getCoverImg(), Constants.RESOURCE_PREFIX);
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if (!FileUtils.checkAllowDownload(imgPath)) {
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throw new ServiceException("非法文件路径: " + imgPath);
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}
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document.add(new AreaBreak()); // 强制分页
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}
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/**
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* 目录页设计
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*/
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@Override
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public void addTableOfContents(Document document, java.util.List<BasicInformationResponse> basicInfoList) {
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Paragraph tocTitle = new Paragraph("目录")
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.setFontSize(20)
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.setBold()
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.setTextAlignment(TextAlignment.CENTER);
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document.add(tocTitle);
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List tocList = new List()
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.setSymbolIndent(20);
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basicInfoList.forEach(x -> tocList.add(x.getBasicInformation().getName()));
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document.add(tocList);
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document.add(new AreaBreak(AreaBreakType.NEXT_PAGE));
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}
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ImageData imageData = ImageDataFactory.create(imgPath);
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Image image = new Image(imageData)
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.setWidth(400)
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.setMarginTop(85)
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.setHorizontalAlignment(HorizontalAlignment.CENTER);
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document.add(image);
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/**
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* 内容页设计
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*/
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@Override
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public void addProductPages(Document document, java.util.List<BasicInformationResponse> basicInfoList) throws MalformedURLException {
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basicInfoList.forEach(x -> {
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Paragraph chapter1 = new Paragraph(x.getBasicInformation().getName())
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.setFontSize(18)
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.setBold();
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document.add(chapter1);
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// 1. 添加园区信息表格
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Table parkTable = new Table(UnitValue.createPercentArray(new float[]{30, 70}))
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.setWidth(UnitValue.createPercentValue(100))
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.setMarginBottom(20)
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.setKeepTogether(true); // 保持表格在同一页;
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// 园区信息标题（蓝色背景）
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Cell cell = new Cell(1, 2)
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.setBackgroundColor(new DeviceRgb(33, 150, 243))
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.add(new Paragraph("园区信息")
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.setFontColor(DeviceRgb.WHITE)
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.setFontSize(16)
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.setBold())
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.setTextAlignment(TextAlignment.CENTER)
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.setPadding(8);
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parkTable.addCell(cell);
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// 添加园区信息行
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parkTable.addCell(new Cell().add(new Paragraph("总投资额")).setPadding(5));
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parkTable.addCell(new Cell().add(new Paragraph("项目标签")).setPadding(5));
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parkTable.addCell(new Cell().add(new Paragraph("项目标签")).setPadding(5));
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parkTable.addCell(new Cell().add(new Paragraph("2.87万m²")).setPadding(5));
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parkTable.addCell(new Cell().add(new Paragraph("现状分类")).setPadding(5));
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parkTable.addCell(new Cell().add(new Paragraph("毛坯")).setPadding(5));
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parkTable.addCell(new Cell().add(new Paragraph("重点发展产业")).setPadding(5));
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parkTable.addCell(new Cell().add(new Paragraph("70个")).setPadding(5));
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parkTable.addCell(new Cell().add(new Paragraph("建设模式")).setPadding(5));
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parkTable.addCell(new Cell().add(new Paragraph("宿舍78间")).setPadding(5));
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parkTable.addCell(new Cell().add(new Paragraph("所属功能区")).setPadding(5));
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parkTable.addCell(new Cell().add(new Paragraph("A栋18900m²，B栋5500m²整租价格可议")).setPadding(5));
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document.add(parkTable);
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// 2. 添加厂房信息表格
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Table factoryTable = new Table(UnitValue.createPercentArray(new float[]{25, 35, 35}))
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.setWidth(UnitValue.createPercentValue(100)).setKeepTogether(true); // 保持表格在同一页;
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// 厂房信息标题（蓝色背景）
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Cell cell2 = new Cell(1, 2)
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.setBackgroundColor(new DeviceRgb(33, 150, 243))
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.add(new Paragraph("厂房信息")
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.setFontColor(DeviceRgb.WHITE)
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.setFontSize(16)
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.setBold())
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.setTextAlignment(TextAlignment.CENTER)
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.setPadding(8);
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factoryTable.addCell(cell2);
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// 子标题（浅灰色背景）
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Cell z1 = new Cell()
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.setBackgroundColor(new DeviceRgb(245, 245, 245))
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.add(new Paragraph("A栋具体参数").setBold())
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.setTextAlignment(TextAlignment.CENTER)
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.setPadding(5);
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factoryTable.addCell(z1);
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Cell z2 = new Cell()
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.setBackgroundColor(new DeviceRgb(245, 245, 245))
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.add(new Paragraph("B栋具体参数").setBold())
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.setTextAlignment(TextAlignment.CENTER)
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.setPadding(5);
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factoryTable.addCell(z2);
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// 添加参数行
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factoryTable.addCell(new Cell().add(new Paragraph("租金")).setPadding(5));
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factoryTable.addCell(new Cell().add(new Paragraph("首层35元/m²，2-3层30元/m²，4-9层25元/m²")).setPadding(5));
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factoryTable.addCell(new Cell().add(new Paragraph("首层32元/m²，2-3层26元/m²，4-5层25元/m²")).setPadding(5));
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factoryTable.addCell(new Cell().add(new Paragraph("租金")).setPadding(5));
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factoryTable.addCell(new Cell().add(new Paragraph("首层35元/m²，2-3层30元/m²，4-9层25元/m²")).setPadding(5));
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factoryTable.addCell(new Cell().add(new Paragraph("首层32元/m²，2-3层26元/m²，4-5层25元/m²")).setPadding(5));
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document.add(factoryTable);
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});
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// 分页控制（关键修改：直接操作PdfDocument）
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document.getPdfDocument().addNewPage();
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}
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}
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