Java documentlistener-输入后程序停止工作
嗨,我的documentlistener有问题。 在我将值插入文本字段后,程序停止工作。该程序应将第一行文本字段与第二行文本字段异或,并将结果放入第三行文本字段Java documentlistener-输入后程序停止工作,java,swing,jtextfield,illegalstateexception,documentlistener,Java,Swing,Jtextfield,Illegalstateexception,Documentlistener,嗨,我的documentlistener有问题。 在我将值插入文本字段后,程序停止工作。该程序应将第一行文本字段与第二行文本字段异或,并将结果放入第三行文本字段 package opa.beta1; import java.awt.BorderLayout; import java.math.BigInteger; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JTextField; impor
package opa.beta1;
import java.awt.BorderLayout;
import java.math.BigInteger;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
public class TextFieldEvent {
JTextField arrayIV[] = new JTextField[8];
JTextField plaintextArray[] = new JTextField[8];
JTextField ciphertextArray[] = new JTextField[8];
JFrame frame = new JFrame("OPA");
JPanel panel1 = new JPanel();
JPanel panel2 = new JPanel();
JPanel panel3 = new JPanel();
public void setJPanel(JTextField array[], JPanel container, String s) {
for (int i = 0; i < 8; i++) {
array[i] = new JTextField(s, 4);
array[i].getDocument().addDocumentListener(new DocumentListener() {
@Override
public void insertUpdate(DocumentEvent de) {
setCiphertext();
}
@Override
public void removeUpdate(DocumentEvent de) {
setCiphertext();
}
@Override
public void changedUpdate(DocumentEvent de) {
setCiphertext();
}
});
container.add(array[i]);
}
}
public String setXORText(JTextField textfield1, JTextField textfield2) {
String okno1, okno2;
okno1 = textfield1.getText();
okno2 = textfield2.getText();
if (okno1.equals("")) {
return okno2;
}
BigInteger pom1 = new BigInteger(okno1, 16);
if (okno2.equals("")) {
return okno1;
}
BigInteger pom2 = new BigInteger(okno2, 16);
BigInteger res = pom1.xor(pom2);
String s = res.toString(16);
return s;
}
public String setXORText(JTextField pole1[], JTextField pole2[], int i) {
String okno1 = pole1[i].getText();
String okno2 = pole2[i].getText();
if (okno1.equals("")) {
return pole2[i].getText();
}
BigInteger pom1 = new BigInteger(okno1, 16);
if (okno2.equals("")) {
return pole1[i].getText();
}
BigInteger pom2 = new BigInteger(okno2, 16);
BigInteger res = pom1.xor(pom2);
String s = res.toString(16);
return s;
}
public void setCiphertext() {
//textfield3.setText(setXORText(textfield1, textfield2));
for (int i = 0; i < 8; i++) {
ciphertextArray[i].setText(setXORText(arrayIV, plaintextArray, i));
}
}
public TextFieldEvent() {
setJPanel(arrayIV, panel1, "1a");
setJPanel(plaintextArray, panel2, "1b");
setJPanel(ciphertextArray, panel3, "1");
frame.add(panel1, BorderLayout.NORTH);
frame.add(panel2, BorderLayout.CENTER);
frame.add(panel3, BorderLayout.SOUTH);
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.pack();
frame.setVisible(true);
frame.setSize(675, 275);
frame.setResizable(false);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new TextFieldEvent();
}
});
}
}
包装
setCiphertext()代码>在您的DocumentListener中的SwingUtilities.invokeLater
这一行
setJPanel(ciphertextArray, panel3, "1");
还将DocumentListener
添加到ciphertextArray
TextField
的每个元素中。因此,每当密码文本TextField
s的值发生变化时,就会调用方法setCipherText()
这将导致以下顺序:
您可以在arrayIV
或plaintextary
调用了setCipherText()
setCipherText()
更改密码文本的值TextField
再次调用setCipherText()
(上面的解释)。回到2
这就是为什么会出现非法状态异常的原因
因此,解决方案是不要将DocumentListener
添加到ciphertextArray
中的TextFields
解决方案可按如下方式实施:
public void setJPanel(JTextField array[], JPanel container, String s, boolean docListener) {
for (int i = 0; i < 8; i++) {
array[i] = new JTextField(s, 4);
if (docListener) {
array[i].getDocument().addDocumentListener(new DocumentListener() {
@Override
public void insertUpdate(DocumentEvent de) {
setCiphertext();
}
@Override
public void removeUpdate(DocumentEvent de) {
setCiphertext();
}
@Override
public void changedUpdate(DocumentEvent de) {
setCiphertext();
}
});
}
container.add(array[i]);
}
}
[...]
setJPanel(arrayIV, panel1, "1a", true);
setJPanel(plaintextArray, panel2, "1b", true);
setJPanel(ciphertextArray, panel3, "1", false);
public void setJPanel(JTextField数组[],JPanel容器,字符串s,布尔docListener){
对于(int i=0;i<8;i++){
数组[i]=新的JTextField(s,4);
if(docListener){
数组[i].getDocument().addDocumentListener(新DocumentListener()){
@凌驾
公共作废插入更新(DocumentEvent de){
setCiphertext();
}
@凌驾
公共作废移除更新(DocumentEvent de){
setCiphertext();
}
@凌驾
公共作废更改日期(DocumentEvent de){
setCiphertext();
}
});
}
container.add(数组[i]);
}
}
[...]
setJPanel(arrayIV,专题1,“1a”,真实);
setJPanel(plaintextArray,panel2,“1b”,真);
setJPanel(ciphertextArray,panel3,“1”,false);
“程序停止工作”-它是否引发任何异常?“停止工作”是什么意思?线程“AWT-EventQueue-0”java.lang.IllegalStateException中的异常:在javax.swing.text.AbstractDocument.writeLock(AbstractDocument.java:1338)的javax.swing.text.AbstractDocument.replace(AbstractDocument.java:659)的javax.swing.text.JTextComponent.setText中尝试在通知中进行变异(JTextComponent.java:1718)在opa.beta1.TextFieldEvent.setCiphertext(TextFieldEvent.java:82)在opa.beta1.TextFieldEvent$1.removeUpdate(TextFieldEvent.java:33)
public void setJPanel(JTextField array[], JPanel container, String s, boolean docListener) {
for (int i = 0; i < 8; i++) {
array[i] = new JTextField(s, 4);
if (docListener) {
array[i].getDocument().addDocumentListener(new DocumentListener() {
@Override
public void insertUpdate(DocumentEvent de) {
setCiphertext();
}
@Override
public void removeUpdate(DocumentEvent de) {
setCiphertext();
}
@Override
public void changedUpdate(DocumentEvent de) {
setCiphertext();
}
});
}
container.add(array[i]);
}
}
[...]
setJPanel(arrayIV, panel1, "1a", true);
setJPanel(plaintextArray, panel2, "1b", true);
setJPanel(ciphertextArray, panel3, "1", false);