java实现文件加密(word、excel、pdf、ppt)
导航
- FileEncryUtils
- 测试环境
- pom依赖
- log4j.properties
- 代码
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.itextpdfgroupId>
<artifactId>itext7-coreartifactId>
<version>7.1.4version>
<type>pomtype>
dependency>
<dependency>
<groupId>org.freemarkergroupId>
<artifactId>freemarkerartifactId>
<version>2.3.28version>
dependency>
<dependency>
<groupId>org.apache.poigroupId>
<artifactId>poiartifactId>
<version>3.17version>
dependency>
<dependency>
<groupId>org.apache.poigroupId>
<artifactId>poi-ooxmlartifactId>
<version>3.17version>
dependency>
<dependency>
<groupId>org.apache.poigroupId>
<artifactId>ooxml-schemasartifactId>
<version>1.1version>
dependency>
<dependency>
<groupId>org.apache.poigroupId>
<artifactId>poi-scratchpadartifactId>
<version>3.17version>
dependency>
<dependency>
<groupId>fr.opensagres.xdocreportgroupId>
<artifactId>fr.opensagres.xdocreport.converter.docx.xwpfartifactId>
<version>1.0.6version>
dependency>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.10version>
<scope>testscope>
dependency>
<dependency>
<groupId>org.slf4jgroupId>
<artifactId>slf4j-apiartifactId>
<version>1.7.21version>
dependency>
<dependency>
<groupId>org.slf4jgroupId>
<artifactId>slf4j-log4j12artifactId>
<version>1.7.25version>
<scope>compilescope>
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.ConsoleAppender
log4j.appender.Console.Target=System.out
log4j.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：2017-08-11 15:36 -DEBUG (HttpServletBean.java:174)- Servlet 'mvc' configured successfully
log4j.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 2020/5/27 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 http://www.slf4j.org/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
代码原作者