思路：其他文档转成配pdf然后通过流发送到前台，前台支持pdf
1.jodconverter-spring-boot-starter方法
1.pom文件
<!--jodconverter 核心包 --> <dependency> <groupId>org.jodconverter</groupId> <artifactId>jodconverter-core</artifactId> <version>4.2.2</version> </dependency> <!--springboot支持包，里面包括了自动配置类 --> <dependency> <groupId>org.jodconverter</groupId> <artifactId>jodconverter-spring-boot-starter</artifactId> <version>4.2.2</version> </dependency> <!--jodconverter 本地支持包 --> <dependency> <groupId>org.jodconverter</groupId> <artifactId>jodconverter-local</artifactId> <version>4.2.2</version> </dependency>
2.application.xml
jodconverter: local: enabled: true max-tasks-per-process: 10 port-numbers: 8100
3.调用
@RestController public class OnlinePreviewController { // 第一步：转换器直接注入 @Autowired DocumentConverter documentConverter; @GetMapping("/toPdfFile") public String toPdfFile(FileMessage fileMessage) { // 获取HttpServletResponse HttpServletResponse response = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getResponse(); // 需要转换的文件 File file = new File(fileMessage.getFileDownloadUri()); try { // 转换之后文件生成的地址 File newFile = new File("D:/common_files/pdf"); if (!newFile.exists()) { newFile.mkdirs(); } String converterPdf = "D:/common_files/pdf" + "/" + fileMessage.getFileName() + "-pdf.pdf"; // 文件转化 documentConverter.convert(file).to(new File(converterPdf)).execute(); // 使用response,将pdf文件以流的方式发送的前段 ServletOutputStream outputStream = response.getOutputStream(); // 读取文件 InputStream in = new FileInputStream(new File(converterPdf)); // copy文件 int i = IOUtils.copy(in, outputStream); System.out.println(i); in.close(); outputStream.close(); } catch (Exception e) { e.printStackTrace(); } return "This is to pdf"; } }
但是这种会发生excle过长穿行的情况;
2.使用com.artofsolving
1.pom文件
<dependency> <groupId>com.artofsolving</groupId> <artifactId>jodconverter</artifactId> <version>2.2.2</version> </dependency> <dependency> <groupId>org.openoffice</groupId> <artifactId>jurt</artifactId> <version>3.0.1</version> </dependency> <dependency> <groupId>org.openoffice</groupId> <artifactId>ridl</artifactId> <version>3.0.1</version> </dependency> <dependency> <groupId>org.openoffice</groupId> <artifactId>juh</artifactId> <version>3.0.1</version> </dependency> <dependency> <groupId>org.openoffice</groupId> <artifactId>unoil</artifactId> <version>3.0.1</version> </dependency>
注意2.2.2是在maven服务器上没有 所以需要单独下载处理 直接上网盘地址
https://pan.baidu.com/s/1dwfLHhUUg9nXf1aRAYfJ8Q
提取码：57nm
2.Controller
import com.artofsolving.jodconverter.DocumentConverter; import com.artofsolving.jodconverter.openoffice.connection.OpenOfficeConnection; import com.artofsolving.jodconverter.openoffice.connection.SocketOpenOfficeConnection; import org.apache.commons.io.IOUtils; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.context.request.RequestContextHolder; import org.springframework.web.context.request.ServletRequestAttributes; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletResponse; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; @RestController public class OnlinePreviewController { @GetMapping("/toPdfFile") public void toPdfFile(FileMessage fileMessage) throws IOException { // 获取HttpServletResponse HttpServletResponse response = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getResponse(); // 源文件目录 File inputFile = new File(fileMessage.getFileDownloadUri()); if (!inputFile.exists()) { System.out.println("源文件不存在！"); return; } // 转换之后文件生成的地址 File newFile = new File("D:/common_files/pdf"); if (!newFile.exists()) { newFile.mkdirs(); } String converterPdf = "D:/common_files/pdf" + "/" + fileMessage.getFileName() + "-pdf.pdf"; // 输出文件目录 File outputFile = new File(converterPdf); if (!outputFile.getParentFile().exists()) { outputFile.getParentFile().exists(); } // 调用openoffice服务线程 String command = "C:/Program Files (x86)/OpenOffice 4/program/soffice.exe -headless -accept=\"socket,host=127.0.0.1,port=8100;urp;\""; Process p = Runtime.getRuntime().exec(command); // 连接openoffice服务 OpenOfficeConnection connection = new SocketOpenOfficeConnection("127.0.0.1", 8100); connection.connect(); // 转换 DocumentConverter converter = new ConverterDocument(connection); converter.convert(inputFile, outputFile); ServletOutputStream outputStream = response.getOutputStream(); // 读取文件 InputStream in = new FileInputStream(new File(converterPdf)); // copy文件 int i = IOUtils.copy(in, outputStream); in.close(); outputStream.close(); // 关闭连接 connection.disconnect(); // 关闭进程 p.destroy(); System.out.println("转换完成！"); } }
转换方法为
DocumentConverter converter = new ConverterDocument(connection); converter.convert(inputFile, outputFile);
因为excel折行问题 所以我们把纸张改变 重写了ConverterDocument
3.ConverterDocument
import com.artofsolving.jodconverter.openoffice.connection.OpenOfficeConnection; import com.artofsolving.jodconverter.openoffice.converter.StreamOpenOfficeDocumentConverter; import com.sun.star.awt.Size; import com.sun.star.beans.PropertyValue; import com.sun.star.lang.XComponent; import com.sun.star.uno.UnoRuntime; import com.sun.star.view.PaperFormat; import com.sun.star.view.XPrintable; /** * 应用模块名称: * 代码描述: * Copyright: Copyright (C) 2020, Inc. All rights reserved. * Company: 万朋测绘科技有限公司 * * @author baocl * @since 2020/5/27 14:49 */ public class ConverterDocument extends StreamOpenOfficeDocumentConverter { public ConverterDocument(OpenOfficeConnection connection) { super(connection); } public final static Size A5, A4, A3; public final static Size B4, B5, B6; public final static Size paperSize; static { A5 = new Size(14800, 21000); A4 = new Size(21000, 29700); A3 = new Size(29700, 42000); B4 = new Size(25000, 35300); B5 = new Size(17600, 25000); B6 = new Size(12500, 17600); // 最大限度 宽 1600000 paperSize = new Size(29700, 27940); } @Override protected void refreshDocument(XComponent document) { super.refreshDocument(document); XPrintable xPrintable = (XPrintable)UnoRuntime.queryInterface(XPrintable.class, document); PropertyValue[] printerDesc = new PropertyValue[2]; // 转换 printerDesc[0] = new PropertyValue(); printerDesc[0].Name = "PaperFormat"; printerDesc[0].Value = PaperFormat.USER; // 纸张大小 printerDesc[1] = new PropertyValue(); printerDesc[1].Name = "PaperSize"; printerDesc[1].Value = paperSize; try { xPrintable.setPrinter(printerDesc); } catch (Exception e) { e.printStackTrace(); } } }
但是这里有一个问题 多sheet页 只有第一页改变了 所以解决办法想了两个
1：将多个sheet合成一个
2：将多sheet也分开打印
(暂时没实现)
然后发现了kkFileView 请参考：https://blog.csdn.net/qq_20143059/article/details/106427297
emmmmmm真香
