Java通过IText导出word和pdf

墨蓝 2022-08-24 04:27 301阅读 0赞

最近做的项目中需要用到导出word和pdf的功能（还有图表），在网上找了很多资料，最后敲定用了IText组件，下面是我项目中的一个Demo，记录了一下，希望对需要的人有帮助。

**相关jar包下载地址：http://download.csdn.net/detail/zwx19921215/8368135**

IText操作类

package com.tgb.util;
    
    import java.awt.Color;
    import java.io.FileNotFoundException;
    import java.io.IOException;
    import java.io.OutputStream;
    import java.util.List;
    
    import com.lowagie.text.Document;
    import com.lowagie.text.DocumentException;
    import com.lowagie.text.Element;
    import com.lowagie.text.Font;
    import com.lowagie.text.FontFactory;
    import com.lowagie.text.Image;
    import com.lowagie.text.PageSize;
    import com.lowagie.text.Paragraph;
    import com.lowagie.text.pdf.BaseFont;
    import com.lowagie.text.pdf.PdfWriter;
    import com.lowagie.text.rtf.RtfWriter2;
    import com.tgb.entity.News;
    
    /**
     * IText操作类
     * @author shyh
     *
     */
    public class ItextManager {
    
    	private Font font;
    	private BaseFont bfChinese;
    
    	public ItextManager() throws Exception {
    		// 设置中文字体
    		bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
    		font = new Font(bfChinese);
    		font.setSize(15);
    		font.setStyle(FontFactory.HELVETICA);
    //		font.setStyle(Font.BOLD);//加粗
    		font.setColor(new Color(0,0,0));
    		
    	}
    
    	public static ItextManager getInstance() throws Exception {
    		return new ItextManager();
    	}
    
    	public void createRtfContext(List<News> newsList, List<String> imgList, OutputStream out,String type) {
    		Document doc = new Document(PageSize.A4, 20, 20, 20, 20);
    		try {
    			if("word".equals(type)){
    				RtfWriter2.getInstance(doc, out);
    			}else if("pdf".equals(type)){
    				PdfWriter.getInstance(doc, out);
    			}
    			doc.open();
    			News news = null;
    			Paragraph title1 = null;
    			for (int i = 0; i < newsList.size(); i++) {
    				news = newsList.get(i);
    				// 标题
    				Paragraph title = new Paragraph(news.getTitle(), font);
    				title.setAlignment(Element.ALIGN_LEFT);
    				doc.add(title);
    
    				// 换行
    				title1 = new Paragraph("\n");
    				doc.add(title1);
    
    				// 正文
    				Paragraph content = new Paragraph(news.getContent(), font);
    				content.setAlignment(Element.ALIGN_LEFT);
    				doc.add(content);
    
    				// 换行
    				title1 = new Paragraph("\n");
    				doc.add(title1);
    
    				// 站点
    				Paragraph site = new Paragraph(news.getSite(), font);
    				content.setAlignment(Element.ALIGN_LEFT);
    				doc.add(site);
    
    				// 换行
    				title1 = new Paragraph("\n");
    				doc.add(title1);
    
    				// 发布时间
    				Paragraph publishTime = new Paragraph(news.getPublishTime(), font);
    				content.setAlignment(Element.ALIGN_LEFT);
    				doc.add(publishTime);
    
    				// 换行
    				title1 = new Paragraph("\n");
    				doc.add(title1);
    
    			}
    
    			Image img = null;
    			for (int j = 0; j < imgList.size(); j++) {
    				// 图片
    				img = Image.getInstance(imgList.get(j));
    				float heigth = img.getHeight();
    				float width = img.getWidth();
    				int percent = getPercent2(heigth, width);
    				img.setAlignment(Image.MIDDLE);
    				img.scalePercent(percent + 3);// 表示是原来图像的比例;
    				doc.add(img);
    			}
    
    			doc.close();
    		} catch (FileNotFoundException e) {
    			e.printStackTrace();
    		} catch (DocumentException e) {
    			e.printStackTrace();
    		} catch (IOException e) {
    			e.printStackTrace();
    		}
    	}
    
    	/**
    	 * 第一种解决方案 在不改变图片形状的同时，判断，如果h>w，则按h压缩，否则在w>h或w=h的情况下，按宽度压缩
    	 * 
    	 * @param h
    	 * @param w
    	 * @return
    	 */
    
    	public static int getPercent(float h, float w) {
    		int p = 0;
    		float p2 = 0.0f;
    		if (h > w) {
    			p2 = 297 / h * 100;
    		} else {
    			p2 = 210 / w * 100;
    		}
    		p = Math.round(p2);
    		return p;
    	}
    
    	/**
    	 * 第二种解决方案，统一按照宽度压缩 这样来的效果是，所有图片的宽度是相等的，自我认为给客户的效果是最好的
    	 * 
    	 * @param args
    	 */
    	public static int getPercent2(float h, float w) {
    		int p = 0;
    		float p2 = 0.0f;
    		p2 = 530 / w * 100;
    		p = Math.round(p2);
    		return p;
    	}
    }

控制层（springmvc）

@RequestMapping(value="/exportword")
    	public String exportWord(HttpServletRequest request,HttpServletResponse response) throws Exception{
    		String type = request.getParameter("type");
    		response.setContentType("application/octet-stream; charset=UTF-8");  
    		if("word".equals(type)){
    			response.setHeader("content-disposition", "attachment;filename=" + new SimpleDateFormat("yyyyMMddHH:mm:ss").format(new Date()) + ".doc");
    		}else if("pdf".equals(type)){
    			response.setHeader("content-disposition", "attachment;filename=" + new SimpleDateFormat("yyyyMMddHH:mm:ss").format(new Date()) + ".pdf");
    		}
    		
    		String svgCode = request.getParameter("svg");//highcharts图表svgCode
    		String svg [] = svgCode.split("_");
    		String path[] = new String[svg.length];
    		OutputStream out = response.getOutputStream();
    		ItextManager tm = ItextManager.getInstance();
    		List<News> newsList = userService.getData();
    		List<String> imageList = new ArrayList<String>();
    		
    		if(svg!=null){
    			for(int k=0;k<svg.length;k++){
    				String picName = new SimpleDateFormat("yyyyMMddHHmmss").format(new Date())+".png";
    				path[k] = request.getSession().getServletContext().getRealPath("/upload/"+picName);
    				imageList.add(path[k]);
    				SvgPngConverter.convertToPng(svg[k], path[k]);
    			}
    		}
    		
    		tm.createRtfContext(newsList,imageList,out,type);
    		
    		out.flush();
    		out.close();
    		return null;
    	}

业务层

@Override
    	public List<News> getData() {
    		List<News> newsList = new ArrayList<News>();
    		News news1 = new News();
    		news1.setTitle("标题：国泰君安*公司研究*广发证券：定增完成，如虎添翼*000776*投资银行业与经纪业行业*梁静");
    		news1.setContent("正文：报告类型=公司事件点评公司简称=广发证券公司代码=000776报告日期=Thu Aug 25 09:05:29 CST 2011研究员 =梁静报告标题=定增完成，如虎添翼【报告摘要】8月25日，广发证券成功向揭阳市信宏资产、汇添富基金、上海海博鑫惠、兴业基金等10家机构定向增发4.526亿股、募集资金121.8亿元，募集资金净额120亿元。");
    		news1.setSite("站点：新浪网");
    		news1.setPublishTime("发布时间：2014-05-12");
    		
    		News news2 = new News();
    		news2.setTitle("标题：[申万销售夏敬慧] 基金仓位周报----开基仓位下降1.51%");
    		news2.setContent("正文：理财产品部分析师: 杨鹏（18930809297） 开基仓位有所下降：本周，开放式基金平均仓位继续下降。");
    		news2.setSite("站点：腾讯网");
    		news2.setPublishTime("发布时间：2014-05-25");
    		
    		newsList.add(news1);
    		newsList.add(news2);
    		
    		return newsList;
    	}

显示层

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
    <title>导出word</title>
    <script type="text/javascript" src="js/jquery/jquery-1.7.1.js"></script>
    <script src="js/highcharts/4.0.1/js/highcharts.js"></script>
    <script src="js/highcharts/4.0.1/js/modules/exporting.js"></script>
    <script type="text/javascript">
    	$(function() {
    		Highcharts.wrap(Highcharts.Chart.prototype, 'getSVG', function (proceed) {
    		    return proceed.call(this)
    		        .replace(
    		            /(fill|stroke)="rgba$([ 0-9]+,[ 0-9]+,[ 0-9]+),([ 0-9\.]+)$"/g, 
    		            '$1="rgb($2)" $1-opacity="$3"'
    		        );
    		});
    		
    		$('#container').highcharts({
    			title : {
    				text : 'Monthly Average Temperature',
    				x : -20
    			//center
    			},
    			subtitle : {
    				text : 'Source: WorldClimate.com',
    				x : -20
    			},
    			xAxis : {
    				categories : [ 'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec' ]
    			},
    			yAxis : {
    				title : {
    					text : 'Temperature (°C)'
    				},
    				plotLines : [ {
    					value : 0,
    					width : 1,
    					color : '#808080'
    				} ]
    			},
    			tooltip : {
    				valueSuffix : '°C'
    			},
    			legend : {
    				layout : 'vertical',
    				align : 'right',
    				verticalAlign : 'middle',
    				borderWidth : 0
    			},
    			series : [ {
    				name : 'Tokyo',
    				data : [ 7.0, 6.9, 9.5, 14.5, 18.2, 21.5, 25.2, 26.5, 23.3, 18.3, 13.9, 9.6 ]
    			}, {
    				name : 'New York',
    				data : [ -0.2, 0.8, 5.7, 11.3, 17.0, 22.0, 24.8, 24.1, 20.1, 14.1, 8.6, 2.5 ]
    			}, {
    				name : 'Berlin',
    				data : [ -0.9, 0.6, 3.5, 8.4, 13.5, 17.0, 18.6, 17.9, 14.3, 9.0, 3.9, 1.0 ]
    			}, {
    				name : 'London',
    				data : [ 3.9, 4.2, 5.7, 8.5, 11.9, 15.2, 17.0, 16.6, 14.2, 10.3, 6.6, 4.8 ]
    			} ]
    		});
    
    		$('#container_pie').highcharts({
    			chart : {
    				plotBackgroundColor : null,
    				plotBorderWidth : null,
    				plotShadow : false
    			},
    			title : {
    				text : 'Browser market shares at a specific website, 2010'
    			},
    			tooltip : {
    				pointFormat : '{series.name}: <b>{point.percentage:.1f}%</b>'
    			},
    			plotOptions : {
    				pie : {
    					allowPointSelect : true,
    					cursor : 'pointer',
    					dataLabels : {
    						enabled : true,
    						color : '#000000',
    						connectorColor : '#000000',
    						format : '<b>{point.name}</b>: {point.percentage:.1f} %'
    					}
    				}
    			},
    			series : [ {
    				type : 'pie',
    				name : 'Browser share',
    				data : [ [ 'Firefox', 45.0 ], [ 'IE', 26.8 ], {
    					name : 'Chrome',
    					y : 12.8,
    					sliced : true,
    					selected : true
    				}, [ 'Safari', 8.5 ], [ 'Opera', 6.2 ], [ 'Others', 0.7 ] ]
    			} ]
    		});
    
    		$("#btn_word").on("click", function() {
    			var chart_line = $("#container").highcharts();
    			var chart_pie = $("#container_pie").highcharts();
    			var svg_line = chart_line.getSVG();
    			var svg_pie = chart_pie.getSVG();
    			var svg = svg_line+"_"+svg_pie;
    			$("#svg").val(svg);
    			$("#form1").prop("action", "exportword.do?type=word").submit();
    		});
    
    		$("#btn_pdf").on("click", function() {
    			var chart_line = $("#container").highcharts();
    			var chart_pie = $("#container_pie").highcharts();
    			var svg_line = chart_line.getSVG();
    			var svg_pie = chart_pie.getSVG();
    			var svg = svg_line + "_" + svg_pie;
    			$("#svg").val(svg);
    			$("#form1").prop("action", "exportword.do?type=pdf").submit();
    		});
    	});
    </script>
    </head>
    <body>
    	<form id="form1" action="exportword.do" method="post">
    		<div>
    			<input type="hidden" name="svg" id="svg" /> 
    			<input id="btn_word" type="button" value="导出word" /> 
    			<input id="btn_pdf" type="button" value="导出pdf" />
    		</div>
    	</form>
    
    	<div id="container" style="min-width: 310px; height: 400px; margin: 0 auto"></div>
    	<div id="container_pie" style="min-width: 310px; height: 400px; margin: 0 auto"></div>
    </body>
    </html>

效果：

![Center][]

导出word:

![Center 1][]

导出Pdf:

![Center 2][]

[Center]: /images/20220823/4cb49b44db274ee0a45babbddaad5475.png
[Center 1]: /images/20220823/5a8e0290b1904a7a82edd9c1a1039c60.png
[Center 2]: /images/20220823/71e4e660a0f04eefb704938c0164e4c4.png