6 changed files with 279 additions and 23 deletions
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package org.dromara.business.utils; |
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import cn.hutool.extra.spring.SpringUtil; |
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import com.itextpdf.text.Document; |
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import com.itextpdf.text.DocumentException; |
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import com.itextpdf.text.Font; |
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import com.itextpdf.text.pdf.BaseFont; |
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import com.itextpdf.text.pdf.PdfWriter; |
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import com.itextpdf.tool.xml.XMLWorkerFontProvider; |
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import com.itextpdf.tool.xml.XMLWorkerHelper; |
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import freemarker.template.TemplateException; |
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import jakarta.servlet.http.HttpServletResponse; |
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import org.springframework.ui.freemarker.FreeMarkerTemplateUtils; |
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import org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer; |
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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.net.URLEncoder; |
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import java.nio.charset.Charset; |
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import java.nio.charset.StandardCharsets; |
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import java.util.Map; |
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/** |
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* Html转换Pdf |
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* |
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* @author ：Mall |
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* @date ：Created in 2022-04-25 |
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*/ |
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public class HtmlConvertPdfHelper { |
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/** |
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* Freemarker的配置类，模板目录默认 在 resources下的 templates |
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*/ |
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private static FreeMarkerConfigurer freeMarkerConfigurer = SpringUtil.getBean(FreeMarkerConfigurer.class); |
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public static void renderTplFileToPDF(String fileName , String templateName, Map<String, Object> datas, HttpServletResponse response) { |
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try { |
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response.setCharacterEncoding(StandardCharsets.UTF_8.name()); // 字符集编码
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response.setContentType("application/pdf;"); |
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response.setHeader("Content-Disposition", "attachment; filename=" + URLEncoder.encode(fileName, "UTF-8")); |
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response.addHeader("Access-Control-Allow-Origin", "*"); // 实现跨域
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byte[] bytes = htmlConvertPDF(datas, templateName); |
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// 将生成的文档写入到响应的输出流中
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response.reset(); // 重置响应
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response.getOutputStream().write(bytes); |
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response.getOutputStream().flush(); |
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} catch (Exception e) { |
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e.printStackTrace(); |
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} |
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} |
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/** |
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* freemarker转PDF |
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* |
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* @param templateName ftl文件名称，需要在resources/templates目录下 |
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* @return |
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* @throws IOException |
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*/ |
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public static byte[] htmlConvertPDF(Object map,String templateName) throws IOException, TemplateException, DocumentException { |
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String htmlText = FreeMarkerTemplateUtils.processTemplateIntoString(freeMarkerConfigurer.getConfiguration().getTemplate(templateName), map); |
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return htmlConvertPDF(htmlText); |
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} |
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/** |
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* 根据HTML内容转Image |
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* |
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* @param htmText HTML文本字符串 |
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*/ |
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public static byte[] htmlConvertPDF(String htmText) throws DocumentException, IOException { |
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//最终返回的byte流
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ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); |
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//第一步，创建一个 iTextSharp.text.Document对象的实例：
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Document document = new Document(); |
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//第二步，为该Document创建一个Writer实例：
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PdfWriter writer = PdfWriter.getInstance(document, byteArrayOutputStream); |
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//第三步，打开当前Document
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document.open(); |
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XMLWorkerHelper.getInstance().parseXHtml(writer, document, new ByteArrayInputStream(htmText.getBytes()), null, Charset.defaultCharset(), new AsianFontProvider()); |
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document.close(); |
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return byteArrayOutputStream.toByteArray(); |
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} |
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} |
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/** |
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* 用于中文显示的Provider |
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*/ |
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class AsianFontProvider extends XMLWorkerFontProvider { |
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@Override |
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public Font getFont(final String fontname, String encoding, float size, int style) { |
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try { |
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BaseFont bfChinese = BaseFont.createFont("STSongStd-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED); |
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return new Font(bfChinese, size, style); |
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} catch (Exception e) { |
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} |
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return super.getFont(fontname, encoding, size, style); |
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} |
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} |
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@ -0,0 +1,124 @@ |
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<!DOCTYPE html> |
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<html> |
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<head> |
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<title>Early Warning Record</title> |
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<style> |
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table, th, td { |
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border: 1px solid black; |
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border-collapse: collapse; |
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text-align: center; |
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} |
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h2, p { |
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text-align: left; |
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margin-top: 40px; |
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margin-left: 60px; |
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} |
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table { |
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margin: 40px auto; |
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width: 100%; |
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} |
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h2 { |
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color: #1b5aa1; |
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} |
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td { |
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word-wrap: break-word; |
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word-break: break-all; |
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} |
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</style> |
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</head> |
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<body> |
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<h2>一、报表日期</h2> |
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<p>${startTime?if_exists}~${endTime?if_exists}</p> |
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<h2>二、数据情况</h2> |
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<p>预警信息总计：${total?if_exists}条；未处理：${todo?if_exists}条; 已完结：${finish?if_exists}条; 已忽略：${cancel?if_exists}条。</p> |
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<p>详情如下</p> |
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<table> |
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<!-- 使用 colgroup 和 col 标签为每一列设置不同宽度 --> |
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<colgroup> |
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<col style="width: 5%;"/> |
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<col style="width: 10%;"/> |
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<col style="width: 10%;"/> |
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<col style="width: 10%;"/> |
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<col style="width: 10%;"/> |
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<col style="width: 10%;"/> |
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</colgroup> |
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<tbody> |
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<tr> |
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<td>序号</td> |
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<td>预警名称</td> |
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<td>所属部门</td> |
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<td>预警状态</td> |
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<td>经纬度</td> |
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<td>预警时间</td> |
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</tr> |
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<#if (alertList?size gt 0) && alertList??> |
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<#list alertList as item> |
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<tr> |
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<td>${item_index + 1}</td> |
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<td>${item.jobName?if_exists}</td> |
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<td>${item.deptName?if_exists}</td> |
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<td>${item.handleType?if_exists}</td> |
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<td>${item.lng?if_exists} ${item.lat?if_exists}</td> |
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<td>${item.createTime?datetime?string('yyyy-MM-dd HH:mm:ss')}</td> |
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</tr> |
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</#list> |
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</#if> |
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</tbody> |
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</table> |
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<script> |
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</script> |
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<#if (alertList?size gt 0) && alertList??> |
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<#list alertList as item> |
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<h2>(${item_index + 1})预警信息：${item.jobName?if_exists}</h2> |
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<table> |
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<colgroup> |
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<col style="width: 50%;"/> |
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<col style="width: 50%;"/> |
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</colgroup> |
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<tbody> |
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<tr> |
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<td style="height: 50px;">前期影像</td> |
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<td style="height: 50px;">后期影像</td> |
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</tr> |
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<tr> |
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<td><img src="${item.maxImages}" alt="前期影像1" style="width: 330px; height: 290px;"/></td> |
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<td><img src="${item.images}" alt="前期影像2" style="width: 330px; height: 290px;"/></td> |
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</tr> |
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<tr> |
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<td><img src="${item.maxMateSourceImgUrl}" alt="后期影像1" style="width: 330px; height: 290px;"/></td> |
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<td><img src="${item.mateSourceImgUrl}" alt="后期影像2" style="width: 330px; height: 290px;"/></td> |
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</tr> |
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</tbody> |
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</table> |
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<#if item.assignUserId??> |
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<h2>处置内容</h2> |
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<table style="border-collapse: collapse; border: none; margin-top: 50px;width: 50%;height: 50%;"> |
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<tbody> |
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<tr> |
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<td style="border: none; text-align: left; height: 30px; vertical-align: top;">识别类型：${item.labelCn?if_exists}</td> |
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<td style="border: none; text-align: left; height: 30px; vertical-align: top;">指派人员: ${item.assignUserName?if_exists}</td> |
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</tr> |
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<tr> |
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<td style="border: none; text-align: left; height: 30px; vertical-align: top;">预警时间: ${item.createTime?datetime?string('yyyy-MM-dd HH:mm:ss')}</td> |
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<td style="border: none; text-align: left; height: 30px; vertical-align: top;">指派时间: |
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<#if item.assignDate??> |
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${item.assignDate?datetime?string('yyyy-MM-dd HH:mm:ss')} |
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</#if> |
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</td> |
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</tr> |
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<tr> |
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<td colspan="2" style="border: none; text-align: left; height: 40px;width: 50%; vertical-align: top;" >任务内容: ${item.reason?if_exists}</td> |
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</tr> |
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</tbody> |
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</table> |
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</#if> |
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</#list> |
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</#if> |
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</body> |
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</html> |
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