使用itextpdf 5填充PDF表单

墨蓝 2023-01-15 03:53 296阅读 0赞

本次使用的是itext pdf5（PDF填充：文本框，图片  
参考博客：[博客1][1]）  
推荐使用itext pdf7 （参考博客：https://blog.csdn.net/u012397189/category\_6356371.html）

## 一、制作PDF模板 ##

开始编辑：  
先下载万兴PDF编辑器（Wondershare PDFelement Professional 7）破解版

链接：https://pan.baidu.com/s/1eKj0ZErexAwTWrHT9wvG3A 
    提取码：jce4

1.先编辑好word，转为PDF作为模板  
2.用此编辑器打开PDF模板  
3.选择“表单” > 表单自动识别 > 表单编辑  
4.可添加表单  
5.修改表单的key值为我们对象中的属性值（对应name，age等，方便填充）  
6.保存PDF模板（模板放到项目中也可以读取。我的是上传到了OSS服务器上，用一个url访问PDF模板）  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dxa2VlcA_size_16_color_FFFFFF_t_70]

## 二、Maven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>
    
    <dependency>
      <groupId>cn.hutool</groupId>
        <artifactId>hutool-all</artifactId>
        <version>5.3.5</version>
    </dependency>

## 三、代码： ##

// pdf模板文件路径（oss） 被填充的PDF
    	private final String TEMPLATE_URL = "http://aliyuncs.com/upload/10b3cfc17869a1e55df64c48f7f.pdf";
    
    /** * 下载PDF * * @param vo 请求查询参数 * @return String 生成PDF链接 */
    	@GetMapping("/pdf")
    	public void downloadPdf(String phone, HttpServletResponse response) { 
    		// 查询要插入的数据 只取最新的那条数据
    		Optional<LowVoltageResidentElec> voltageOptional = new LambdaQueryChainWrapper<>(lowVoltageResidentElecMapper)
    			.eq(LowVoltageResidentElec::getIsDeleted, BladeConstant.DB_NOT_DELETED)
    			.eq(LowVoltageResidentElec::getClientMobilePhone, phone)
    			.list()
    			.stream()
    			.max((s1, s2) -> (int) (s1.getUpdateTime().getTime() - s2.getUpdateTime().getTime()));
    		if (voltageOptional.isPresent()) { 
    			LowVoltageResidentElec lowVoltageResidentElec = voltageOptional.get();
    			Map<String, Object> data = BeanUtil.beanToMap(lowVoltageResidentElec);
    			// 输出pdf文件路径
    			String targetPath = "";
    			// 设置windows或linux系统文件上传路径
    			String fileName = IdUtil.simpleUUID() + ".pdf";
    			if (System.getProperty("os.name").toLowerCase().startsWith("win")) { 
    				log.info("Windows系统...");
    				targetPath = customFileConfig.getWindows() + fileName; // d:/测试.pdf
    			} else { 
    				log.info("Linux系统...");
    				targetPath = customFileConfig.getLinux() + fileName; // /home/mzp/sg-yc-pj/tmp/测试.pdf
    			}
    			BaseFont baseFont = null;
    			try { 
    				// 字体：宋体
    				baseFont = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
    			} catch (Exception e) { 
    				throw new RuntimeException("本地字体读取有误！");
    			}
    			PdfReader pdfReader = null;
    			PdfStamper pdfStamper = null;
    			try { 
    				URL url = new URL(TEMPLATE_URL);
    				pdfReader = new PdfReader(url);
    				pdfStamper = new PdfStamper(pdfReader, new FileOutputStream(targetPath));
    			} catch (Exception e) { 
    				throw new RuntimeException("模板读取有误！");
    			}
    
    			AcroFields form = pdfStamper.getAcroFields();
    			form.addSubstitutionFont(baseFont);
    			// 写入数据 用电信息
    			try { 
    				form.setField("clientName", data.get("clientName").toString());
    				form.setField("clientIdCard", data.get("clientIdCard").toString());
    				form.setField("clientElecAddress", data.get("clientElecAddress").toString());
    			} catch (Exception e) { 
    				throw new RuntimeException("写入数据有误！");
    			}
    
    			// 服务评价信息 一个业务员对应一个客户
    			Optional<ServiceEvaluation> evaluationOptional = new LambdaQueryChainWrapper<>(serviceEvaluationMapper)
    				.eq(ServiceEvaluation::getIsDeleted, BladeConstant.DB_NOT_DELETED)
    				.eq(ServiceEvaluation::getEvaluationMobile, phone)
    				.list()
    				.stream()
    				.max((s1, s2) -> (int) (s1.getUpdateTime().getTime() - s2.getUpdateTime().getTime()));
    			ServiceEvaluation serviceEvaluation = null;
    			if (evaluationOptional.isPresent()) { 
    				serviceEvaluation = evaluationOptional.get();
    				serviceEvaluation.setPicLink(vo.getPicUrl());
    				serviceEvaluationService.updateById(serviceEvaluation);
    				// 添加图片1 手签图片
    				int pageNo = form.getFieldPositions("manuallySignedUrl1").get(0).page;
    				Rectangle signRect = form.getFieldPositions("manuallySignedUrl1").get(0).position;
    				float x = signRect.getLeft();
    				float y = signRect.getBottom();
    				// 添加图片2 手签图片
    				int pageNo2 = form.getFieldPositions("manuallySignedUrl2").get(0).page;
    				Rectangle signRect2 = form.getFieldPositions("manuallySignedUrl2").get(0).position;
    				float x2 = signRect2.getLeft();
    				float y2 = signRect2.getBottom();
    
    				Image image = null;
    				Image image2 = null;
    				try { 
    					// 写入图片1
    					image = Image.getInstance(serviceEvaluation.getManuallySignedUrl());
    					PdfContentByte under = pdfStamper.getOverContent(pageNo);
    					// 设置图片大小
    					image.scaleAbsolute(signRect.getWidth(), signRect.getHeight());
    					// 设置图片位置
    					image.setAbsolutePosition(x, y);
    					under.addImage(image);
    
    					// 写入图片2
    					image2 = Image.getInstance(serviceEvaluation.getManuallySignedUrl());
    					PdfContentByte under2 = pdfStamper.getOverContent(pageNo2);
    					// 设置图片大小
    					image2.scaleAbsolute(signRect2.getWidth(), signRect2.getHeight());
    					// 设置图片位置
    					image2.setAbsolutePosition(x2, y2);
    					under2.addImage(image2);
    				} catch (Exception e) { 
    					throw new RuntimeException("写入手签图片有误！");
    				}
    			} else { 
    				log.info("手签图片未写入PDF");
    			}
    
    			//设置不可编辑, pdfStamper.close()后PDF生成
    			pdfStamper.setFormFlattening(true);
    			try { 
    				pdfStamper.close();
    			} catch (Exception e) { 
    				throw new RuntimeException("PDF对象关闭有误！");
    			}	
    	}

## 四、效果： ##

和普通PDF一样。  
谷歌浏览器打开字体有问题，需要用wps打开就好了。

[1]: https://blog.csdn.net/Aurora_____/article/details/111209096?utm_medium=distribute.pc_category.none-task-blog-hot-1.nonecase&depth_1-utm_source=distribute.pc_category.none-task-blog-hot-1.nonecase
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dxa2VlcA_size_16_color_FFFFFF_t_70]: /images/20221022/676a091f0de74193b42ef478e4591ea1.png