没有废话。
maven依赖
<dependency><groupId>com.itextpdf</groupId><artifactId>itextpdf</artifactId><version>5.5.13</version></dependency><dependency><groupId>org.bouncycastle</groupId><artifactId>bcprov-jdk15on</artifactId><version>1.47</version></dependency>
代码
import com.itextpdf.text.pdf.PdfReader;import com.itextpdf.text.pdf.PdfStamper;import com.itextpdf.text.pdf.PdfWriter;import java.io.FileOutputStream;public class PdfEncry {public static void main(String[] args) {String srcPath = "C:\\D\\1.pdf";String destPath = "C:\\D\\1-1.pdf";String passWd = "2048";encrypt(srcPath, destPath, passWd);}private static void encrypt(String srcPath, String destPath, String passWd) {try {PdfReader srcReader = new PdfReader(srcPath);PdfStamper destStamper = new PdfStamper(srcReader, new FileOutputStream(destPath));destStamper.setEncryption(passWd.getBytes(), passWd.getBytes(),PdfWriter.ALLOW_PRINTING, PdfWriter.ENCRYPTION_AES_128);destStamper.close();srcReader.close();} catch (Exception e) {e.printStackTrace();}}}
