我有一个对象,我想序列成字节码:Java对象序列化java.io.UTFDataFormatException
public class objektserial implements Serializable {
private static final long serialVersionUID = 1L;
private String msg ="";
private LinkedList<String> stringlist = new LinkedList<String>();
public objektserial(String nachricht) {
this.msg = nachricht;
this.stringlist = new LinkedList<String>();
}
public objektserial(){
}
public String getMsg(){
return msg;
}
public void setList(LinkedList<String> list){
this.stringlist = list;
}
}
我的想法:1。 序列化 2.加密字节码 3.加密字节代码 4.反序列化
// Serialization
objektserial os = new objektserial(textField.getText());
LinkedList<String> list = new LinkedList<String>();
for (int i = 0; i < 10; i++)
list.add("String Nr. " + i);
os.setList(list);
try {
FileOutputStream file = new FileOutputStream("objekt.objs");
ObjectOutputStream o = new ObjectOutputStream(file);
o.writeObject(os);
o.close();
} catch (IOException ex) {
System.err.println(e);
}
// Encrypt
try {
BufferedReader in = new BufferedReader(new FileReader("objekt.objs"));
String s = "";
String text = "";
while ((s = in.readLine()) != null) {
text += s;
}
String passwordEnc = AESencrp.encrypt(text);
String passwordDec = AESencrp.decrypt(passwordEnc);
File file = new File("objekt.objs");
FileWriter fw = new FileWriter(file, false);
BufferedWriter writer = new BufferedWriter(fw);
writer.write(passwordEnc);
writer.close();
System.out.println("Plain Text : " + text);
System.out.println("Encrypted Text : " + passwordEnc);
System.out.println("Decrypted Text : " + passwordDec);
} catch (Exception eiasdasd) {
}
// Decrypt
try {
BufferedReader in = new BufferedReader(new FileReader("objekt.objs"));
String s = "";
String text = "";
while ((s = in.readLine()) != null) {
text += s;
}
String passwordDec = AESencrp.decrypt(text);
File file = new File("objekt.objs");
FileWriter fw = new FileWriter(file, false);
BufferedWriter writer = new BufferedWriter(fw);
writer.write(passwordDec);
writer.close();
System.out.println("Plain Text : " + text);
System.out.println("Encrypted Text : " + text);
System.out.println("Decrypted Text : " + passwordDec);
} catch (Exception eiasdasd) {
}
// Read&Dezerialize
try {
FileInputStream file = new FileInputStream("objekt.objs");
ObjectInputStream o = new ObjectInputStream(file);
objektserial obs = (objektserial) o.readObject();
o.close();
textField_1.setText(obs.getMsg());
} catch (IOException e) {
System.err.println(e);
} catch (ClassNotFoundException e) {
System.err.println(e);
}
这工作正常,但如果我的序列化对象过大(超过一行,如果我用记事本打开++中的字节码文件),我得到一个"java.io.UTFDataFormatException"
。
我得到java.io.UTFDataFormatException
当我尝试反序列化&阅读再次解密的文件...
我能做些什么来解决这个问题?
上面的代码有很多错误。您正在读取和写入同一个文件,您不需要中间文件。您将二进制(字节数组)视为字符串值,反之亦然。我没有看到任何解密方法。修复缩进并遵守Java风格指南也会有很多帮助。我的建议是重新开始并创建单独的部分来完成文件写入,编码/解码,字符编码解码和加密/解密*并单独测试*。 –