前言

本文实现 Springboot 整合 itext 实现PDF文件合并，图片转PDF拼接。

一、引用依赖

<dependency>
     <groupId>com.itextpdf</groupId>
     <artifactId>itext7-core</artifactId>
     <version>8.0.5</version>
     <type>pom</type>
</dependency>

二、使用步骤

1.Controller

代码如下（示例）：

import com.ruoyi.tools.service.IPdfHandlerService;
import lombok.RequiredArgsConstructor;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestPart;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletResponse;
import java.util.List;

@RestController
@RequiredArgsConstructor
@RequestMapping("/pdf")
public class PdfHandlerController {
   

private final IPdfHandlerService pdfHandlerService;

@PostMapping(value = "/generateFromFiles", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
public void uploadFiles(@RequestPart("files") List<MultipartFile> files, HttpServletResponse response) throws Exception {
   
    byte[] pdfBytes = pdfHandlerService.generatePdfFromFiles(files