用itextpdf写pdf，样式实在是太折磨了，这里选用Thymeleaf模板生成html转pdf，html+css写样式排版好太多了。
<!--html转pdf-->
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>html2pdf</artifactId>
<version>4.0.2</version>
</dependency>
spring:
thymeleaf:
cache: false
prefix: classpath:/templates/
suffix: .html
mode: HTML
encoding: UTF-8
src/main/resources/font/cn.ttf *(cn.ttf必须是中文字体)
src/main/resources/templates/pdf.html
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8"/>
<title>Title</title>
<style>
body {
font-family: "Microsoft YaHei UI";
}
</style>
</head>
<body>
<h1>检测报告</h1>
<div>
<p>
<span>ID:</span>
<span>007</span>
</p>
<p>
<span>来源:</span>
<span th:text="${sys}"></span>
</p>
<table border="1">
<tr style="background-color: #f6f6f6">
<th>id</th>
<th>name</th>
<th>age</th>
</tr>
<tr>
<td>1</td>
<td>tom</td>
<td>20</td>
</tr>
</table>
</div>
</body>
</html>
package top.yxlhsx.thymeleafdemo;
import com.itextpdf.html2pdf.ConverterProperties;
import com.itextpdf.html2pdf.HtmlConverter;
import com.itextpdf.html2pdf.resolver.font.DefaultFontProvider;
import com.itextpdf.io.font.FontProgram;
import com.itextpdf.io.font.FontProgramFactory;
import com.itextpdf.layout.font.FontProvider;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.util.ObjectUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;
import javax.annotation.Resource;
import javax.servlet.http.HttpSession;
import java.io.*;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.HashMap;
import java.util.Map;
@Controller
@RequestMapping("/test")
public class TestController {
@Resource
private TemplateEngine templateEngine;
@GetMapping("pdf")
public void importPdf() throws IOException{
String outputFolder = "C:\\Users\\你的用户名\\Desktop\\新建文件夹\\test.pdf";
OutputStream outputStream = Files.newOutputStream(Paths.get(outputFolder));
Context context = new Context();
context.setVariable("sys", "linux");
String htmlStr = templateEngine.process("pdf", context);
ConverterProperties properties = new ConverterProperties();
FontProvider fontProvider = new DefaultFontProvider();
FontProgram fontProgram = FontProgramFactory.createFont("font/cn.ttf");
fontProvider.addFont(fontProgram);
properties.setFontProvider(fontProvider);
HtmlConverter.convertToPdf(htmlStr, outputStream, properties);
}
}
<!--添加这个依赖即可-->
<!--而且最好是3.1.x版本，不然也报错-->
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>html2pdf</artifactId>
<version>4.0.2</version>
</dependency>
