一、前言
学习概述：简单的介绍一下本篇文章要讲解的Java知识点
学习目标：读者读完这篇文章之后，你希望他掌握你讲解的哪些重要的知识点
二、jar破解
1.项目远程仓库配置
aspose-pdf 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
<dependency>
<groupId>org.javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.20.0-GA</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.aspose/aspose-pdf -->
<dependency>
<groupId>com.aspose</groupId>
<artifactId>aspose-pdf</artifactId>
<version>21.8</version>
</dependency>
Javassist是一个开源的分析、编辑和创建Java字节码的类库。
aspose-pdf是一个处理pdf的java类库。
3.破解代码
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 PDFJarCrack {
public static void main(String[] args) throws Exception {
String jarPath = "E:\\maven_repository\\com\\aspose\\aspose-pdf\\21.8\\aspose-pdf-21.8.jar";
crack(jarPath);
}
private static void crack(String jarName) {
try {
ClassPool.getDefault().insertClassPath(jarName);
CtClass ctClass = ClassPool.getDefault().getCtClass("com.aspose.pdf.ADocument");
CtMethod[] declaredMethods = ctClass.getDeclaredMethods();
int num = 0;
for (int i = 0; i < declaredMethods.length; i++) {
if (num == 2) {
break;
}
CtMethod method = declaredMethods[i];
CtClass[] ps = method.getParameterTypes();
if (ps.length == 2
&& method.getName().equals("lI")
&& ps[0].getName().equals("com.aspose.pdf.ADocument")
&& ps[1].getName().equals("int")) {
// 最多只能转换4页 处理
System.out.println(method.getReturnType());
System.out.println(ps[1].getName());
method.setBody("{return false;}");
num = 1;
}
if (ps.length == 0 && method.getName().equals("lt")) {
// 水印处理
method.setBody("{return true;}");
num = 2;
}
}
File file=new File(jarName);
ctClass.writeFile(file.getParent());
disposeJar(jarName, file.getParent()+"/com/aspose/pdf/ADocument.class");
} catch(NotFoundException e){
e.printStackTrace();
} catch(CannotCompileException e){
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private static void disposeJar(String jarName, String replaceFile) {
List<String> deletes = new ArrayList<>();
deletes.add("META-INF/37E3C32D.SF");
deletes.add("META-INF/37E3C32D.RSA");
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";
// File bakFile=new File(bakJarName);
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(entry.getName().equals("com/aspose/pdf/ADocument.class")){
System.out.println("Replace:-------" +entry.getName());
JarEntry jarEntry = new JarEntry(entry.getName());
jos.putNextEntry(jarEntry);
FileInputStream fin = new FileInputStream(replaceFile);
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();
}修改你本机的aspose-pdf-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-pdf-21.8.cracked.jar包，用这个包替换原来的aspose-pdf-21.8.jar包即可。
控制台输出
三、pdf转word
代码实现
import com.aspose.pdf.Document;
import com.aspose.pdf.SaveFormat;
import java.io.*;
public class PDFHelper3 {
public static void main(String[] args) throws IOException {
pdf2doc("C:\\Users\\liuya\\Desktop\\pdf\\中信重工铸锻公司数字化工厂技术要求.pdf");
}
//pdf转doc
public static void pdf2doc(String pdfPath) {
long old = System.currentTimeMillis();
try {
//新建一个word文档
String wordPath=pdfPath.substring(0,pdfPath.lastIndexOf("."))+".docx";
FileOutputStream os = new FileOutputStream(wordPath);
//doc是将要被转化的word文档
Document doc = new Document(pdfPath);
//全面支持DOC, DOCX, OOXML, RTF HTML, OpenDocument, PDF, EPUB, XPS, SWF 相互转换
doc.save(os, SaveFormat.DocX);
os.close();
//转化用时
long now = System.currentTimeMillis();
System.out.println("Pdf 转 Word 共耗时：" + ((now - old) / 1000.0) + "秒");
} catch (Exception e) {
System.out.println("Pdf 转 Word 失败...");
e.printStackTrace();
}
}
}修改自己的pdf文件路径，运行主方法即可，完成无水印，无页数限制转换word文件
控制台输出
到此这篇关于Java实现PDF转Word的示例代码(无水印无页数限制)的文章就介绍到这了,更多相关Java PDF转Word内容请搜索编程网以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程网！
