1.使用 jd-gui.exe 反编译查看,直接搜索 License
1.修改
public static boolean isLicenseSet() {return (a != null);}
改成
public static boolean isLicenseSet() {return true;}
2.修改
public void setLicense(InputStream stream) {Document document = null;if (stream != null)try {DocumentBuilder documentBuilder = zad.b();document = documentBuilder.parse(stream);} catch (Exception exception) {throw new CellsException(9, zf.a(new byte[] { -20, 93, -23, 54, -20, -49, -59, 86, -9, -86, 49, 44, -59, 71, -52, -86, -90, 6, -90, -25, -86, 1, -1, -92, -91, -126, 7, 113, -66, -95, -121, 16, -122, -126, 7, 104, -40, -70, -10, -37, 126, 7, -111, -121, -121 }) + exception.getMessage());} a(document);}
改成
public void setLicense(InputStream paramInputStream){a = new License();zbiw.a();}
3.修改
private static Date k(String paramString) {if (paramString == null || paramString.length() < 8)return null; SimpleDateFormat simpleDateFormat = new SimpleDateFormat(zf.a(new byte[] { 79, 89, 33, -52, 79, -121, -125, 33, 71, -126, 105, -121 }));try {return simpleDateFormat.parse(paramString);} catch (ParseException parseException) {throw new IllegalArgumentException(zf.a(new byte[] { -21, -113, -77, 13, -115, 27, Byte.MIN_VALUE, 35, 103, -52, -20, -106, 71, 95, 31, -73, -76, -38, 13, 31, -91, -97, -102, 85, -68, -33, -19, -87, -127, -14, 78, -23, 6, -25, -94, 1, -97, -95, -57, -121 }));} }
改成
private static Date k(String paramString){return new Date(Long.MAX_VALUE);}
2.生成 aspose-cells-20.7-crack.jar
修改 class 这里使用 javassist:
新建一个 Spring boot 项目:
pom 文件中引用 javassist
<dependency><!--aspose的jar破解工具--><groupId>org.javassist</groupId><artifactId>javassist</artifactId><version>3.20.0-GA</version></dependency>
启动类中创建一个静态方法 crackAspose
public static void crackAspose(String JarPath) throws Exception {// 这个是得到反编译的池ClassPool pool = ClassPool.getDefault();// 取得需要反编译的jar文件,设定路径pool.insertClassPath(JarPath);CtClass cc_License = pool.get("com.aspose.cells.License");CtMethod method_isLicenseSet = cc_License.getDeclaredMethod("isLicenseSet");method_isLicenseSet.setBody("return true;");CtClass cc_License2 = pool.get("com.aspose.cells.License");CtMethod method_setLicense = cc_License2.getDeclaredMethod("setLicense");method_setLicense.setBody("{ a = new com.aspose.cells.License();\n" +" com.aspose.cells.zbiw.a();}");CtMethod method_k = cc_License.getDeclaredMethod("k");method_k.setBody("return new java.util.Date(Long.MAX_VALUE);");cc_License.writeFile("F:\\441\\1");}
在 main 方法中执行 crackAspose
try{crackAspose("F:\\441\\aspose-cells-20.7.jar");System.out.println("Success!");}catch (Exception e){e.printStackTrace();}
复制一个 aspose-cells-20.7.jar 改名为 aspose-cells-20.7-crack.zip 然后解压
把刚才生成的 License.class 文件 替换到解压的源代码中。
造一个 License xml 文件,这里文件名为 com.aspose.cells.lic_2999.xml, 位置直接放源代码解压的根目录:
文件内容为:
<License><Data><Products><Product>Aspose.Cells for Java</Product></Products><EditionType>Enterprise</EditionType><SubscriptionExpiry>29991231</SubscriptionExpiry><LicenseExpiry>29991231</LicenseExpiry><SerialNumber>evilrule</SerialNumber></Data><Signature>evilrule</Signature>
</License>
防止文件指纹校验,我们需要删除掉源代码解压包中的 META_INF 文件夹。
最后的根目录:
压缩源代码(注意要是 zip 格式)
然后重命名为:
完成!
3.测试 aspose-cells-20.7-crack.jar 使用
封装一个 License 验证方法:
public static boolean authrolizeLicense() {boolean result = false;try {InputStream is = com.aspose.cells.License.class.getResourceAsStream("/com.aspose.cells.lic_2999.xml");License asposeLicense = new License();asposeLicense.setLicense(is);is.close();result = true;} catch (Exception e) {e.printStackTrace();}return result;
}
修改 main 方法测试使用:
public static void main(String[] args) {/*// 修改 License.classtry{crackAspose("C:\\Users\\DYG\\Desktop\\1\\aspose-cells-20.7.jar");System.out.println("Success!");}catch (Exception e){e.printStackTrace();}*/// 测试破解后的 aspose-cells-20.7-crack.jarboolean auth = authrolizeLicense();if (!auth) {System.out.println("aspose 许可无效!");return;}System.out.println("aspose 已就绪!");try{Workbook wb = new Workbook("F:\\aaa123.xlsx");Worksheet ws = wb.getWorksheets().get(0);ImageOrPrintOptions imgOptions = new ImageOrPrintOptions();imgOptions.setImageFormat(ImageFormat.getPng());imgOptions.setCellAutoFit(true);imgOptions.setOnePagePerSheet(true);SheetRender render = new SheetRender(ws, imgOptions);render.toImage(0, "F:\\aaa\\123.png");}catch (Exception e){e.printStackTrace();}}
运行:
样板图
生成图片