1200字范文 > java实现文件加密(word excel pdf ppt)

java实现文件加密(word excel pdf ppt)

时间：2021-11-10 10:33:41

FileEncryUtils

提供word、excel、pdf、ppt的加密

测试环境

JDK1.8+idea+maven

pom依赖

<dependencies><dependency><groupId>com.itextpdf</groupId><artifactId>itext7-core</artifactId><version>7.1.4</version><type>pom</type></dependency><dependency><groupId>org.freemarker</groupId><artifactId>freemarker</artifactId><version>2.3.28</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi</artifactId><version>3.17</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml</artifactId><version>3.17</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>ooxml-schemas</artifactId><version>1.1</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-scratchpad</artifactId><version>3.17</version></dependency><dependency><groupId>fr.opensagres.xdocreport</groupId><artifactId>fr.opensagres.xdocreport.converter.docx.xwpf</artifactId><version>1.0.6</version></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.10</version><scope>test</scope></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>1.7.21</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>1.7.25</version><scope>compile</scope></dependency></dependencies>

log4j.properties

#定义输出级别log4j.rootLogger=DEBUG,Console#日志输出方式：控制台输出log4j.appender.Console=org.apache.log4j.ConsoleAppenderlog4j.appender.Console.Target=System.outlog4j.appender.Console.Encoding=UTF-8#可以灵活地指定布局模式log4j.appender.Console.layout=org.apache.log4j.PatternLayout#log4j.appender.Console.layout.ConversionPattern = %d{yyyy-MM-dd HH:mm:ss.SSS} -%p (%F\:%L)- %m%n#打印格式例子：-08-11 15:36 -DEBUG (HttpServletBean.java:174)- Servlet 'mvc' configured successfullylog4j.appender.Console.layout.ConversionPattern = %d{yyyy-MM-dd HH:mm} -%p (%F\:%L)- %m%n

代码

package util;import java.io.*;import org.apache.poi.hslf.usermodel.HSLFSlideShow;import org.apache.poi.hssf.record.crypto.Biff8EncryptionKey;import org.apache.poi.hssf.usermodel.HSSFWorkbook;import org.apache.poi.hwpf.HWPFDocument;import org.apache.poi.openxml4j.opc.OPCPackage;import org.apache.poi.openxml4j.opc.PackageAccess;import org.apache.poi.poifs.crypt.EncryptionInfo;import org.apache.poi.poifs.crypt.EncryptionMode;import org.apache.poi.poifs.crypt.Encryptor;import org.apache.poi.poifs.filesystem.POIFSFileSystem;import com.itextpdf.kernel.pdf.EncryptionConstants;import com.itextpdf.kernel.pdf.PdfDocument;import com.itextpdf.kernel.pdf.PdfReader;import com.itextpdf.kernel.pdf.PdfWriter;import com.itextpdf.kernel.pdf.ReaderProperties;import com.itextpdf.kernel.pdf.WriterProperties;import org.slf4j.Logger;import org.slf4j.LoggerFactory;/*** @author ：Lizhipeng* @date ：Created in /5/27 14:29* @description：* @modified By：* @version:*/public class FileEncryUtils {private static Logger LOGGER = LoggerFactory.getLogger(FileEncryUtils.class);/*** 加密WORD文档(doc)* @param sourceFilePath源文件* @param targetFilePath目标文件* @param password 密码* @return* @throws Exception*/public static boolean encrypDOC(String sourceFilePath, String targetFilePath, String password) throws Exception{return encrypDOC(sourceFilePath, new FileOutputStream(targetFilePath), password);}public static boolean encrypDOC(String sourceFilePath, OutputStream out, String password) throws IOException {POIFSFileSystem fs = null;HWPFDocument doc = null;try {fs = new POIFSFileSystem(new FileInputStream(sourceFilePath));doc = new HWPFDocument(fs);Biff8EncryptionKey.setCurrentUserPassword(password);doc.write(out);return true;} catch (Exception e) {LOGGER.error("DOC文档加密失败:{}",e.getMessage());return false;}finally {// FileUtils.close(doc);doc.close();// FileUtils.close(fs);fs.close();// FileUtils.close(out);out.close();}}/*** 加密EXCEL文档(xls)* @param sourceFilePath源文件* @param targetFilePath目标文件* @param password 密码* @return* @throws Exception*/public static boolean encrypXLS(String sourceFilePath, String targetFilePath, String password) throws Exception{return encrypXLS(sourceFilePath, new FileOutputStream(targetFilePath), password);}public static boolean encrypXLS(String sourceFilePath, OutputStream out, String password) throws IOException {POIFSFileSystem fs = null;HSSFWorkbook hwb = null;try {fs = new POIFSFileSystem(new FileInputStream(sourceFilePath));hwb = new HSSFWorkbook(fs);Biff8EncryptionKey.setCurrentUserPassword(password);hwb.write(out);return true;} catch (Exception e) {LOGGER.error("XLS文档加密失败:{}",e.getMessage());return false;}finally {// FileUtils.close(hwb);// FileUtils.close(fs);// FileUtils.close(out);hwb.close();fs.close();out.close();}}/*** 加密PPT文档(ppt)* @param sourceFilePath源文件* @param targetFilePath目标文件* @param password 密码* @return* @throws Exception*/public static boolean encrypPPT(String sourceFilePath, String targetFilePath, String password) throws Exception{return encrypPPT(sourceFilePath, new FileOutputStream(targetFilePath), password);}public static boolean encrypPPT(String sourceFilePath, OutputStream out, String password) throws IOException {POIFSFileSystem fs = null;HSLFSlideShow hss = null;try {fs = new POIFSFileSystem(new FileInputStream(sourceFilePath));hss = new HSLFSlideShow(fs);Biff8EncryptionKey.setCurrentUserPassword(password);hss.write(out);return true;} catch (Exception e) {LOGGER.error("PPT文档加密失败:{}",e.getMessage());return false;}finally {// FileUtils.close(hss);// FileUtils.close(fs);// FileUtils.close(out);hss.close();fs.close();out.close();}}/*** 加密PDF文档* @param sourceFilePath源文件* @param targetFilePath目标文件* @param password 密码* @return* @throws Exception*/public static boolean encrypPDF(String sourceFilePath, String targetFilePath, String password) throws Exception{return encrypPDF(sourceFilePath, new FileOutputStream(targetFilePath), password);}public static boolean encrypPDF(String sourceFilePath, OutputStream out, String password) throws IOException {PdfDocument pdfDoc = null;PdfReader reader = null;try {reader = new PdfReader(sourceFilePath, new ReaderProperties().setPassword("World".getBytes()));PdfWriter writer = new PdfWriter(out,new WriterProperties().setStandardEncryption(password.getBytes(), password.getBytes(),EncryptionConstants.EMBEDDED_FILES_ONLY,EncryptionConstants.ENCRYPTION_AES_128 | EncryptionConstants.DO_NOT_ENCRYPT_METADATA));pdfDoc = new PdfDocument(reader, writer);return true;} catch (Exception e) {LOGGER.error("PDF文档加密失败:{}",e.getMessage());return false;}finally {// FileUtils.close(pdfDoc);// FileUtils.close(reader);pdfDoc.close();reader.close();}}/*** 加密xml文档(docx,xlsx,pptx)* @param sourceFilePath源文件* @param targetFilePath目标文件* @param password 密码* @return* @throws Exception*/public static boolean encrypXML(String sourceFilePath, String targetFilePath, String password) throws Exception{return encrypXML(sourceFilePath, new FileOutputStream(targetFilePath), password);}public static boolean encrypXML(String sourceFilePath, OutputStream out, String password) throws IOException {POIFSFileSystem fs = null;try {fs = new POIFSFileSystem();EncryptionInfo info = new EncryptionInfo(EncryptionMode.agile);Encryptor enc = info.getEncryptor();enc.confirmPassword(password);try (OPCPackage opc = OPCPackage.open(new File(sourceFilePath), PackageAccess.READ_WRITE);OutputStream os = enc.getDataStream(fs)) {opc.save(os);}fs.writeFilesystem(out);return true;} catch (Exception e) {LOGGER.error("XML文档加密失败:{}",e.getMessage());return false;} finally {// FileUtils.close(fs);// FileUtils.close(out);fs.close();out.close();}}/*** 加密文档* @param sourceFilePath源文件* @param targetFilePath目标文件* @param password 密码* @return*/public static boolean encryFile(String sourceFilePath, String targetFilePath, String password){try {return encryFile(sourceFilePath, new FileOutputStream(targetFilePath), password);} catch (Exception e) {LOGGER.error("文档加密失败:{}",e.getMessage());}return false;}public static boolean encryFile(String sourceFilePath, OutputStream out, String password){boolean flag = false;try {int index = sourceFilePath.indexOf(".");if(index > 0) {String suffix = sourceFilePath.substring(index+1);if("doc".equalsIgnoreCase(suffix)) {flag = encrypDOC(sourceFilePath, out, password);}else if("xls".equalsIgnoreCase(suffix)) {flag = encrypXLS(sourceFilePath, out, password);}else if("ppt".equalsIgnoreCase(suffix)) {flag = encrypPPT(sourceFilePath, out, password);}else if("pdf".equalsIgnoreCase(suffix)) {flag = encrypPDF(sourceFilePath, out, password);}else if("docx".equalsIgnoreCase(suffix) || "xlsx".equalsIgnoreCase(suffix) || "pptx".equalsIgnoreCase(suffix)){flag = encrypXML(sourceFilePath, out, password);}else {LOGGER.warn("无法识别的文件类型");}}} catch (Exception e) {LOGGER.error("文档加密失败:{}",e.getMessage());}return flag;}/*** 简单测试* @param args*//*public static void main(String[] args) {boolean flag = FileEncryUtils.encryFile("C:/Users/Lzp's_computer/Desktop/测试文件.docx", "加密.docx", "password");LOGGER.info(String.valueOf(flag));}*/}

遇到的错误：

SLF4J: Failed to load class “org.slf4j.impl.StaticLoggerBinder”.
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See /codes.html#StaticLoggerBinder for further details.

解决办法：导入slf4j12这个依赖(slf4j-nop也行),只用slf4j-api会报错

有更简单粗暴的文件加密方法或思路请不吝赐教

参考代码