项目方案:Java创建Word生成隐藏文字
1. 简介
本项目旨在利用Java编程语言创建Word文档,并在文档中添加隐藏文字。隐藏文字是指在文档中无法直接看到的文字,可以通过特定的方式进行解密和查看。
2. 技术选型
- 编程语言:Java
- 文档处理库:Apache POI
- 加密算法:AES(Advanced Encryption Standard)
3. 模块设计
本项目主要分为以下几个模块:
- 文档创建模块:负责创建Word文档并设置基本样式
- 隐藏文字加密模块:负责将隐藏文字进行加密并插入到Word文档中
- 隐藏文字解密模块:负责从Word文档中提取隐藏文字并进行解密
4. 实现步骤
4.1 文档创建模块
首先,我们需要使用Apache POI库创建一个空的Word文档,并设置基本样式(如字体、字号、段落等)。
import org.apache.poi.xwpf.usermodel.*;
public class WordUtils {
private XWPFDocument document;
public WordUtils() {
document = new XWPFDocument();
}
public void createDocument(String filePath) {
try {
FileOutputStream out = new FileOutputStream(filePath);
document.write(out);
out.close();
System.out.println("Word文档创建成功!");
} catch (IOException e) {
e.printStackTrace();
}
}
public void setFont(String text, String fontFamily, int fontSize) {
XWPFParagraph paragraph = document.createParagraph();
XWPFRun run = paragraph.createRun();
run.setText(text);
run.setFontFamily(fontFamily);
run.setFontSize(fontSize);
}
// ...其他设置样式的方法
}
4.2 隐藏文字加密模块
在隐藏文字加密模块中,我们需要使用AES算法对要隐藏的文字进行加密,并将加密后的文字插入到Word文档中。
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
public class AESUtils {
private static final String ALGORITHM = "AES";
public static byte[] encrypt(String data, String key) throws Exception {
KeyGenerator keyGenerator = KeyGenerator.getInstance(ALGORITHM);
keyGenerator.init(128);
SecretKey secretKey = keyGenerator.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec secretKeySpec = new SecretKeySpec(enCodeFormat, ALGORITHM);
Cipher cipher = Cipher.getInstance(ALGORITHM);
cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
byte[] bytes = cipher.doFinal(data.getBytes());
return bytes;
}
public static String decrypt(byte[] data, String key) throws Exception {
KeyGenerator keyGenerator = KeyGenerator.getInstance(ALGORITHM);
keyGenerator.init(128);
SecretKey secretKey = keyGenerator.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec secretKeySpec = new SecretKeySpec(enCodeFormat, ALGORITHM);
Cipher cipher = Cipher.getInstance(ALGORITHM);
cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
byte[] result = cipher.doFinal(data);
return new String(result);
}
}
4.3 隐藏文字解密模块
在隐藏文字解密模块中,我们需要从Word文档中提取出隐藏文字,并使用AES算法对其进行解密。
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;
import java.io.FileInputStream;
import java.util.List;
public class WordUtils {
// ...其他代码
public void insertHiddenText(String text, String key) {
try {
byte[] encryptedBytes = AESUtils.encrypt(text, key);
XWPFParagraph paragraph = document.createParagraph();
XWPFRun run = paragraph.createRun();
run.getCTR().addNewRPr().addNewVanish();
run.setText(new String(encryptedBytes));
} catch (Exception e) {
e.printStackTrace();
}
}
public String extractHiddenText(String filePath, String key) {
try {
FileInputStream fis = new FileInputStream(filePath);
XWPFDocument document = new XWPFDocument(fis);
List<XWPFParagraph> paragraphs = document.getParagraphs();
StringBuilder sb = new StringBuilder();
for (XWPFParagraph paragraph : paragraphs) {
List<XWPFRun> runs = paragraph.getRuns();
for (XWPFRun run : runs) {
if (run.getCTR().getRPr() != null && run.getCTR().