这篇“Java如何实现Excel文件转PDF无水印无限制”文章的知识点大部分人都不太理解，所以小编给大家总结了以下内容，内容详细，步骤清晰，具有一定的借鉴价值，希望大家阅读完这篇文章能有所收获，下面我们一起来看看这篇“Java如何实现Excel文件转PDF无水印无限制”文章吧。
一、jar破解
1.项目远程仓库配置
aspose-cells 这个需要配置单独的仓库地址才能下载，不会配置的可以去官网直接下载jar引入项目代码中。
<repositories> <repository> <id>AsposeJavaAPI</id> <name>Aspose Java API</name> <url>https://repository.aspose.com/repo/</url> </repository> </repositories>2.pom文件引入相关依赖
<!-- https://mvnrepository.com/artifact/com.aspose/aspose-cells --> <dependency> <groupId>com.aspose</groupId> <artifactId>aspose-cells</artifactId> <version>21.8</version> </dependency> <dependency> <groupId>org.javassist</groupId> <artifactId>javassist</artifactId> <version>3.20.0-GA</version> </dependency>Javassist是一个开源的分析、编辑和创建Java字节码的类库。
3.代码破解
import javassist.*; import java.io.*;import java.util.ArrayList;import java.util.Enumeration;import java.util.List;import java.util.jar.JarEntry;import java.util.jar.JarFile;import java.util.jar.JarOutputStream; public class ExcelJarCrack { public static void main(String[] args) throws Exception { String jarPath = "C:\\Users\\liuya\\Desktop\\jar\\aspose-cells-21.8.jar"; crack(jarPath); } private static void crack(String jarName) throws NotFoundException, CannotCompileException, IOException { //这一步是完整的jar包路径 ClassPool.getDefault().insertClassPath(jarName); CtClass LicenseClass = ClassPool.getDefault().getCtClass("com.aspose.cells.License"); CtMethod[] aMethods = LicenseClass.getDeclaredMethods("a"); for (CtMethod aMethod : aMethods) { CtClass returnType=aMethod.getReturnType(); if(returnType.getName().equals("boolean")){ aMethod.setBody("{return true;}"); break; } } //将文件名命名成备份文件 File file=new File(jarName); LicenseClass.writeFile(file.getParent()); disposeJar(jarName); } private static void disposeJar(String jarName) { List<String> deletes = new ArrayList<>(); deletes.add("META-INF/37E3C32D.SF"); deletes.add("META-INF/37E3C32D.RSA"); List<String> replaces = new ArrayList<>(); replaces.add("com/aspose/cells/License.class"); File oriFile = new File(jarName); if (!oriFile.exists()) { System.out.println("######Not Find File:" + jarName); return; } //将文件名命名成备份文件 String bakJarName = jarName.substring(0, jarName.length() - 3) + "cracked.jar"; try { //创建文件（根据备份文件并删除部分） JarFile jarFile = new JarFile(jarName); JarOutputStream jos = new JarOutputStream(new FileOutputStream(bakJarName)); Enumeration entries = jarFile.entries(); while (entries.hasMoreElements()) { JarEntry entry = (JarEntry) entries.nextElement(); if (!deletes.contains(entry.getName())) { if(replaces.contains(entry.getName())){ System.out.println("Replace:-------" +entry.getName()); JarEntry jarEntry = new JarEntry(entry.getName()); jos.putNextEntry(jarEntry); FileInputStream fin = new FileInputStream(oriFile.getParent()+ "/"+entry.getName()); byte[] bytes = readStream(fin); jos.write(bytes, 0, bytes.length); }else { jos.putNextEntry(entry); byte[] bytes = readStream(jarFile.getInputStream(entry)); jos.write(bytes, 0, bytes.length); } } else { System.out.println("Delete:-------" + entry.getName()); } } jos.flush(); jos.close(); jarFile.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } private static byte[] readStream(InputStream inStream) throws Exception { ByteArrayOutputStream outSteam = new ByteArrayOutputStream(); byte[] buffer = new byte[1024]; int len = -1; while ((len = inStream.read(buffer)) != -1) { outSteam.write(buffer, 0, len); } outSteam.close(); inStream.close(); return outSteam.toByteArray(); } }修改为你本机的aspose-cells-21.8.jar路径，然后运行主方法，破解成功后，会再同级文件夹下生成一个aspose-cells-21.8.cracked.jar包，用这个包替换原来的aspose-pdf-21.8.jar包即可。
二、Excel转PDF
1.代码实现
import com.aspose.cells.License;import com.aspose.cells.SaveFormat;import com.aspose.cells.Workbook; import java.io.FileOutputStream; public class PdfUtils { public static void main(String[] args) { excelToPdf("C:\\Users\\liuya\\Desktop\\excel\\test.xlsx"); } public static void excelToPdf(String excelPath) { License license = new License(); license.setLicense("C:\\Users\\liuya\\Desktop\\jar\\Aspose.License.xml"); long old = System.currentTimeMillis(); try { //新建一个pdf文档 String pdfPath=excelPath.substring(0,excelPath.lastIndexOf("."))+".pdf"; //Excel文件数据 Workbook wb = new Workbook(excelPath); FileOutputStream fileOS = new FileOutputStream(pdfPath); //保存为pdf文件 wb.save(fileOS, SaveFormat.PDF); fileOS.close(); //转化用时 long now = System.currentTimeMillis(); System.out.println("EXCEL 转 Pdf 共耗时：" + ((now - old) / 1000.0) + "秒"); } catch (Exception e) { e.printStackTrace(); } } }2.Aspose.License.xml 授权文件
代码如下：
<License> <Data> <LicensedTo>Aspose Scotland Team</LicensedTo> <EmailTo>billy.lundie@aspose.com</EmailTo> <LicenseType>Developer OEM</LicenseType> <LicenseNote>Limited to 1 developer, unlimited physical locations</LicenseNote> <OrderID>140408052324</OrderID> <UserID>94236</UserID> <OEM>This is a redistributable license</OEM> <Products> <Product>Aspose.Total for Java</Product> </Products> <EditionType>Enterprise</EditionType> <SerialNumber>9a59547c-41f0-428b-ba72-7c4368f151d7</SerialNumber> <SubscriptionExpiry>20221231</SubscriptionExpiry> <LicenseVersion>3.0</LicenseVersion> <LicenseInstructions>http://www.aspose.com/corporate/purchase/license-instructions.aspx</LicenseInstructions> </Data> <Signature>FO3PHsblgDt8F59sMT1l1amyi9qk2V6E8dQkIP7LdTJSxDibNEFu1zOinQbqFfKv/ruttvcxoROkc1tUe0DtO6cP1Zf6J0VemgSY8i/LZECTGszRqJVQRZ0MoVnBhuPAJk5eli7fhVcF8hWd3E4XQ3LzfmJCuaj2NEteRi5Hrfg=</Signature></License>因为jar已破解其核心验证方法，里面的签名可以随便填写，但是格式尽量保持一致，因为验证其他的格式方法还在！
运行成功截图
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