invokeLater 的问题
Issues with invokeLater
我在使用 invokeLater 更新 JLabel 值时遇到问题。
我在运行 invokeLater 的主函数之外有一个单独的方法，但是当我单击搜索按钮更新值时，它不会在同一个 gui 实例中更新。
我必须在 eclipse 中重新启动 gui 才能更改值。
我不确定我做错了什么，所以非常感谢任何帮助。
我是 运行 这个方法 threadStart();在按钮的 actionListener 中。
方法如下
private void threadStart() {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
testLabel.setText(CN);
}
这里是完整的 class 作为参考。
import java.awt.EventQueue;
import javax.naming.InvalidNameException;
import javax.naming.ldap.LdapName;
import javax.swing.JFrame;
import javax.swing.JButton;
import java.awt.BorderLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.GridLayout;
import javax.naming.ldap.LdapName;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import java.awt.Color;
import java.awt.Font;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Inet4Address;
import java.net.UnknownHostException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.swing.JTextArea;
import javax.swing.JTable;
public class MISControlPanel {
JFrame frame;
static JTextField textField;
private JTextField textField_1;
final JTextArea textArea = new JTextArea();
JLabel selectedComputerFromAD = new JLabel("testing");
String sCurrentLine = null;
String CN = null;
JLabel testLabel = new JLabel("test");
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
MISControlPanel window = new MISControlPanel();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*
* @throws IOException
*
* @wbp.parser.entryPoint
*/
public MISControlPanel() throws IOException {
initialize();
}
/**
* Initialize the contents of the frame.
*
* @throws IOException
*/
private void initialize() throws IOException {
frame = new JFrame();
frame.getContentPane().setBackground(Color.LIGHT_GRAY);
frame.getContentPane().setForeground(Color.RED);
frame.setBounds(100, 100, 658, 618);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(null);
frame.setTitle("MIS Advanced Computerers");
frame.setResizable(false);
FileWriter fw = new FileWriter("C:\Users\anoc5f\Desktop\Output.txt");
File tempFile = new File("myTempFile.txt");
JButton searchComputerButton = new JButton("Search");
searchComputerButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
threadStart();
String line;
BufferedWriter bw = null;
BufferedWriter writer = null;
try {
writer = new BufferedWriter(new FileWriter(tempFile));
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
String s = null;
Process p = null;
/*
* try { // p = Runtime.getRuntime().exec(
* "cmd /c start c:\computerQuery.bat computerName"); } catch
* (IOException e1) { // TODO Auto-generated catch block
* e1.printStackTrace(); }
*/
try {
p = Runtime.getRuntime().exec("c:\computerQuery.bat");
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
StringBuffer sbuffer = new StringBuffer();
BufferedReader in = new BufferedReader(new InputStreamReader(p
.getInputStream()));
try {
while ((line = in.readLine()) != null) {
System.out.println(line);
// textArea.append(line);
String dn = "CN=FDCD111304,OU=Workstations,OU=SIM,OU=Accounts,DC=FL,DC=NET";
LdapName ldapName = new LdapName(dn);
String commonName = (String) ldapName.getRdn(
ldapName.size() - 1).getValue();
}
ComputerQuery.sendParam();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (InvalidNameException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} finally
{
try {
fw.close();
}
catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
try {
in.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
ComputerQuery.sendParam();
SwingUtilities.invokeLater(new Runnable() {
public void run() {
testLabel.setText(CN);
}
});
}
});
try (BufferedReader br = new BufferedReader(new FileReader(
"resultofbatch.txt"))) {
final Pattern PATTERN = Pattern.compile("CN=([^,]+).*");
try {
while ((sCurrentLine = br.readLine()) != null) {
String[] tokens = PATTERN.split(","); // This will return
// you a array,
// containing the
// string array
// splitted by what
// you write inside
// it.
// should be in your case the split, since they are
// seperated by ","
// System.out.println(sCurrentLine);
CN = sCurrentLine.split("CN=", -1)[1].split(",", -1)[0];
System.out.println(CN);
testLabel.setText(CN);
}
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
} catch (IOException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
// SwingUtilities.invokeLater(updateCN());
searchComputerButton.setBounds(419, 19, 89, 20);
frame.getContentPane().add(searchComputerButton);
textField = new JTextField();
textField.setBounds(285, 19, 124, 20);
frame.getContentPane().add(textField);
textField.setColumns(10);
JLabel lblComputerName = new JLabel("Computer Name:");
lblComputerName.setForeground(Color.BLACK);
lblComputerName.setFont(new Font("Tahoma", Font.BOLD, 14));
lblComputerName.setBounds(159, 13, 124, 29);
frame.getContentPane().add(lblComputerName);
JLabel lblSelectedComputer = new JLabel("Selected Computer:");
lblSelectedComputer.setFont(new Font("Tahoma", Font.BOLD, 14));
lblSelectedComputer.setBounds(205, 78, 143, 30);
frame.getContentPane().add(lblSelectedComputer);
java.net.InetAddress localMachine = null;
try {
localMachine = java.net.InetAddress.getLocalHost();
} catch (UnknownHostException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
textArea.setBackground(Color.GRAY);
textArea.setForeground(Color.WHITE);
textArea.setFont(textArea.getFont().deriveFont(Font.BOLD));
textArea.setBounds(10, 387, 632, 191);
textArea.setEditable(false); // might cause design view not to come up
frame.getContentPane().add(textArea);
JButton btnNewButton = new JButton("SSO REPAIR");
btnNewButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
btnNewButton.setBounds(36, 183, 132, 23);
frame.getContentPane().add(btnNewButton);
JLabel lblNewLabel = new JLabel("Batch File Fixes");
lblNewLabel.setFont(new Font("Tahoma", Font.BOLD, 12));
lblNewLabel.setBounds(53, 158, 115, 14);
frame.getContentPane().add(lblNewLabel);
JLabel lblIpAddress = new JLabel("IP Address:");
lblIpAddress.setFont(new Font("Tahoma", Font.BOLD, 14));
lblIpAddress.setBounds(261, 104, 102, 22);
frame.getContentPane().add(lblIpAddress);
JLabel label = null;
try {
label = new JLabel(Inet4Address.getLocalHost().getHostAddress()); // Get
// User
// ID
} catch (UnknownHostException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
label.setFont(new Font("Tahoma", Font.BOLD, 14));
label.setForeground(Color.RED);
label.setBounds(349, 105, 99, 21);
frame.getContentPane().add(label);
JLabel lblPcCommunication = new JLabel("PC Communication");
lblPcCommunication.setFont(new Font("Tahoma", Font.BOLD, 12));
lblPcCommunication.setBounds(279, 158, 115, 14);
frame.getContentPane().add(lblPcCommunication);
JButton btnPingComputer = new JButton("PING");
btnPingComputer.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
btnPingComputer.setBounds(306, 183, 64, 23);
frame.getContentPane().add(btnPingComputer);
JButton remoteAssistanceButton = new JButton(
"Remote Assistance by PC Name");
remoteAssistanceButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
remoteAssistanceButton.setBounds(215, 251, 246, 23);
frame.getContentPane().add(remoteAssistanceButton);
JButton btnPingIndefinetely = new JButton("PING INDEFINETELY");
btnPingIndefinetely.setBounds(260, 217, 156, 23);
frame.getContentPane().add(btnPingIndefinetely);
JButton btnRdcByIp = new JButton("RDC by IP Address");
btnRdcByIp.setBounds(261, 353, 156, 23);
frame.getContentPane().add(btnRdcByIp);
JButton btnRdcByName = new JButton("RDC by PC Name");
btnRdcByName.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
btnRdcByName.setBounds(248, 319, 180, 23);
frame.getContentPane().add(btnRdcByName);
JLabel lblLoggedInOpid = new JLabel("Logged in OPID:");
lblLoggedInOpid.setFont(new Font("Tahoma", Font.BOLD, 14));
lblLoggedInOpid.setBounds(228, 127, 135, 20);
frame.getContentPane().add(lblLoggedInOpid);
JLabel lblNewLabel_1 = new JLabel(System.getProperty("user.name")
.toUpperCase());
lblNewLabel_1.setFont(new Font("Tahoma", Font.BOLD, 14));
lblNewLabel_1.setForeground(Color.RED);
lblNewLabel_1.setBounds(348, 130, 86, 14);
frame.getContentPane().add(lblNewLabel_1);
JButton btnHiddenShare = new JButton("HIDDEN SHARE");
btnHiddenShare.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
btnHiddenShare.setBounds(484, 183, 132, 23);
frame.getContentPane().add(btnHiddenShare);
JLabel lblAdditionalTools = new JLabel("Tools");
lblAdditionalTools.setFont(new Font("Tahoma", Font.BOLD, 12));
lblAdditionalTools.setBounds(526, 157, 126, 20);
frame.getContentPane().add(lblAdditionalTools);
JButton btnNewButton_1 = new JButton("Remote Assistance by IP Address");
btnNewButton_1.setBounds(215, 285, 246, 23);
frame.getContentPane().add(btnNewButton_1);
JButton gpUpdate = new JButton("GP UPDATE");
gpUpdate.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
gpUpdate.setBounds(36, 217, 132, 23);
frame.getContentPane().add(gpUpdate);
JButton btnForced = new JButton("NURMED REG FIX");
btnForced.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
btnForced.setBounds(36, 251, 132, 23);
frame.getContentPane().add(btnForced);
JButton btnCleaConsoler = new JButton("CLEAR");
btnCleaConsoler.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textArea.setText("");
}
});
btnCleaConsoler.setBounds(563, 353, 79, 23);
frame.getContentPane().add(btnCleaConsoler);
JLabel lblOpid = new JLabel("Find Computer by OPID:");
lblOpid.setFont(new Font("Tahoma", Font.BOLD, 14));
lblOpid.setBounds(104, 53, 180, 14);
frame.getContentPane().add(lblOpid);
textField_1 = new JTextField();
textField_1.setBounds(285, 50, 124, 20);
frame.getContentPane().add(textField_1);
textField_1.setColumns(10);
JButton btnNewButton_2 = new JButton("Search");
btnNewButton_2.setBounds(419, 50, 89, 23);
frame.getContentPane().add(btnNewButton_2);
testLabel.setForeground(Color.RED);
testLabel.setFont(new Font("Tahoma", Font.BOLD, 14));
testLabel.setBounds(358, 78, 150, 24);
frame.getContentPane().add(testLabel);
}
private void threadStart() {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
testLabel.setText(CN);
}
});
}
}
我的建议再次是您应该：
- 如果需要，将批处理文件输出到标准输出、控制台。
- 通过从您的进程捕获 InputStream 和 ErrorStream 来捕获该输出。这些可以通过重定向错误流被困在一起。
- 您应该在后台线程中执行所有这些操作，例如使用 SwingWorker。
- 我将 SwingWorker 指定为
SwingWorker<Integer, String> 类型，这样它就可以 "publish" 从其 InputStream 中读取字符串，然后它最终可以 return 进程的整数退出代码以确保进程 运行 正常。
例如，假设我在用户工作目录中有一个名为 test.bat 的 bat 文件，它只是打印出传递给它的路径的目录：
test.bat
dir %1
您可以从 GUI 调用它并使用上述技术显示结果。
请注意，我下面的代码大量借鉴了 MadProgrammer's wonderful answer that can be found here: Printing a Java InputStream from a Process。请检查他的回答，包括他的描述，如果它能帮助您更好地理解正在发生的事情，请点赞。
另请务必阅读 Concurrency in Swing 以了解有关如何执行后台线程处理的所有详细信息，尤其是 SwingWorker 在 Swing GUI 中的使用。
import java.awt.BorderLayout;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.function.Consumer;
import javax.swing.*;
@SuppressWarnings("serial")
public class TestBatGui extends JPanel {
public static final String BATCH_FILE_PATH = "test.bat";
private JTextArea resultArea = new JTextArea(30, 80);
public TestBatGui() {
resultArea.setFocusable(false); // not allow user edits
resultArea.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 12));
JScrollPane scrollPane = new JScrollPane(resultArea);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
JPanel buttonPanel = new JPanel(new GridLayout(1, 0, 5, 0));
int keyCode = KeyEvent.VK_H;
String path = System.getProperty("user.home");
buttonPanel.add(new JButton(new ShowDirAction("Home Dir", keyCode, path)));
keyCode = KeyEvent.VK_W;
path = System.getProperty("user.dir");
buttonPanel.add(new JButton(new ShowDirAction("Working Dir", keyCode,
path)));
setLayout(new BorderLayout());
add(scrollPane, BorderLayout.CENTER);
add(buttonPanel, BorderLayout.PAGE_END);
}
// Action/ActionListener to be used by my buttons
private class ShowDirAction extends AbstractAction {
private String path;
public ShowDirAction(String name, int keyCode, String path) {
super(name);
putValue(MNEMONIC_KEY, keyCode);
this.path = path;
}
@Override
public void actionPerformed(ActionEvent e) {
// our SwingWorker
BatchFileWorker batchFileWorker = new BatchFileWorker(
resultArea, BATCH_FILE_PATH, path);
// add a listener to respond when the worker is done
batchFileWorker.addPropertyChangeListener(new BatchFileWorkerListener());
batchFileWorker.execute(); // execute the worker
}
}
// class to listen for when the worker has completed its work
// and then this class extracts the SwingWorker's results via .get()
// and does house cleaning if need be.
private class BatchFileWorkerListener implements PropertyChangeListener {
@Override
public void propertyChange(PropertyChangeEvent evt) {
if (evt.getNewValue() == SwingWorker.StateValue.DONE) {
BatchFileWorker worker = (BatchFileWorker) evt.getSource();
try {
// extract the result returned from the worker's doInBackground() method
// and most importantly, trap any exceptions thrown
int exitValue = worker.get();
String displayText = "";
if (exitValue != 0) {
displayText = String.format("Error when running batch, Exit Value: %d", exitValue);
} else {
displayText = "Batch file ran without error";
}
((Consumer<String>) worker).accept(displayText);
((Consumer<String>) worker).accept("\n");
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
}
}
}
// Our SwingWorker. It's also a Consumer so that outside classes, namely the InputConsumer
// can pass the strings that it reads back into the worker via the accept(...) method
private class BatchFileWorker extends SwingWorker<Integer, String> implements Consumer<String> {
private JTextArea resultArea;
private String batchFilePath;
private String dirPath;
public BatchFileWorker(JTextArea resultArea, String batchFilePath,
String dirPath) {
this.resultArea = resultArea;
this.batchFilePath = batchFilePath;
this.dirPath = dirPath;
}
@Override
protected Integer doInBackground() throws Exception {
// command list to load into the process builder
List<String> commandList = new ArrayList<>();
int exitCode = 0;
publish("Getting dir for " + dirPath);
commandList.add("cmd");
commandList.add("/c");
commandList.add(batchFilePath);
commandList.add(dirPath);
// create the process builder
ProcessBuilder pBuilder = new ProcessBuilder(commandList);
// add the error stream to the input stream so now we have only one stream to handle
pBuilder.redirectErrorStream();
Process p = pBuilder.start(); // create our process
InputStream is = p.getInputStream(); // get its InputStream and use it
InputStreamReader isr = new InputStreamReader(is); // to create a
BufferedReader br = new BufferedReader(isr); // BufferedReader
InputConsumer consumer = new InputConsumer(br, this); // pass into our consumer object
Thread thread = new Thread(consumer); // start this in a background thread
thread.start();
exitCode = p.waitFor(); // wait in this thread for the error code
thread.join(); // join two threads
br.close(); // close the BufferedReader
return exitCode;
}
@Override // this allows our InputConsumer to pass Strings read back into the SwingWorker
public void accept(String text) {
publish(text);
}
@Override // published text will be sent here on the EDT, to be placed into the JTextArea
protected void process(List<String> chunks) {
for (String chunk : chunks) {
resultArea.append(chunk + "\n");
}
}
}
// to read in from the BufferedReader, passing text back into its consumer
private class InputConsumer implements Runnable {
private BufferedReader br;
private Consumer<String> consumer;
public InputConsumer(BufferedReader br, Consumer<String> consumer) {
this.br = br;
this.consumer = consumer;
}
@Override
public void run() {
String line = null;
try {
while ((line = br.readLine()) != null) {
consumer.accept(line);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
private static void createAndShowGui() {
TestBatGui mainPanel = new TestBatGui();
JFrame frame = new JFrame("TestBatGui");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
我在使用 invokeLater 更新 JLabel 值时遇到问题。 我在运行 invokeLater 的主函数之外有一个单独的方法，但是当我单击搜索按钮更新值时，它不会在同一个 gui 实例中更新。 我必须在 eclipse 中重新启动 gui 才能更改值。 我不确定我做错了什么，所以非常感谢任何帮助。 我是 运行 这个方法 threadStart();在按钮的 actionListener 中。 方法如下
private void threadStart() {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
testLabel.setText(CN);
}
这里是完整的 class 作为参考。
import java.awt.EventQueue;
import javax.naming.InvalidNameException;
import javax.naming.ldap.LdapName;
import javax.swing.JFrame;
import javax.swing.JButton;
import java.awt.BorderLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.GridLayout;
import javax.naming.ldap.LdapName;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import java.awt.Color;
import java.awt.Font;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Inet4Address;
import java.net.UnknownHostException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.swing.JTextArea;
import javax.swing.JTable;
public class MISControlPanel {
JFrame frame;
static JTextField textField;
private JTextField textField_1;
final JTextArea textArea = new JTextArea();
JLabel selectedComputerFromAD = new JLabel("testing");
String sCurrentLine = null;
String CN = null;
JLabel testLabel = new JLabel("test");
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
MISControlPanel window = new MISControlPanel();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*
* @throws IOException
*
* @wbp.parser.entryPoint
*/
public MISControlPanel() throws IOException {
initialize();
}
/**
* Initialize the contents of the frame.
*
* @throws IOException
*/
private void initialize() throws IOException {
frame = new JFrame();
frame.getContentPane().setBackground(Color.LIGHT_GRAY);
frame.getContentPane().setForeground(Color.RED);
frame.setBounds(100, 100, 658, 618);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(null);
frame.setTitle("MIS Advanced Computerers");
frame.setResizable(false);
FileWriter fw = new FileWriter("C:\Users\anoc5f\Desktop\Output.txt");
File tempFile = new File("myTempFile.txt");
JButton searchComputerButton = new JButton("Search");
searchComputerButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
threadStart();
String line;
BufferedWriter bw = null;
BufferedWriter writer = null;
try {
writer = new BufferedWriter(new FileWriter(tempFile));
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
String s = null;
Process p = null;
/*
* try { // p = Runtime.getRuntime().exec(
* "cmd /c start c:\computerQuery.bat computerName"); } catch
* (IOException e1) { // TODO Auto-generated catch block
* e1.printStackTrace(); }
*/
try {
p = Runtime.getRuntime().exec("c:\computerQuery.bat");
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
StringBuffer sbuffer = new StringBuffer();
BufferedReader in = new BufferedReader(new InputStreamReader(p
.getInputStream()));
try {
while ((line = in.readLine()) != null) {
System.out.println(line);
// textArea.append(line);
String dn = "CN=FDCD111304,OU=Workstations,OU=SIM,OU=Accounts,DC=FL,DC=NET";
LdapName ldapName = new LdapName(dn);
String commonName = (String) ldapName.getRdn(
ldapName.size() - 1).getValue();
}
ComputerQuery.sendParam();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (InvalidNameException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} finally
{
try {
fw.close();
}
catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
try {
in.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
ComputerQuery.sendParam();
SwingUtilities.invokeLater(new Runnable() {
public void run() {
testLabel.setText(CN);
}
});
}
});
try (BufferedReader br = new BufferedReader(new FileReader(
"resultofbatch.txt"))) {
final Pattern PATTERN = Pattern.compile("CN=([^,]+).*");
try {
while ((sCurrentLine = br.readLine()) != null) {
String[] tokens = PATTERN.split(","); // This will return
// you a array,
// containing the
// string array
// splitted by what
// you write inside
// it.
// should be in your case the split, since they are
// seperated by ","
// System.out.println(sCurrentLine);
CN = sCurrentLine.split("CN=", -1)[1].split(",", -1)[0];
System.out.println(CN);
testLabel.setText(CN);
}
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
} catch (IOException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
// SwingUtilities.invokeLater(updateCN());
searchComputerButton.setBounds(419, 19, 89, 20);
frame.getContentPane().add(searchComputerButton);
textField = new JTextField();
textField.setBounds(285, 19, 124, 20);
frame.getContentPane().add(textField);
textField.setColumns(10);
JLabel lblComputerName = new JLabel("Computer Name:");
lblComputerName.setForeground(Color.BLACK);
lblComputerName.setFont(new Font("Tahoma", Font.BOLD, 14));
lblComputerName.setBounds(159, 13, 124, 29);
frame.getContentPane().add(lblComputerName);
JLabel lblSelectedComputer = new JLabel("Selected Computer:");
lblSelectedComputer.setFont(new Font("Tahoma", Font.BOLD, 14));
lblSelectedComputer.setBounds(205, 78, 143, 30);
frame.getContentPane().add(lblSelectedComputer);
java.net.InetAddress localMachine = null;
try {
localMachine = java.net.InetAddress.getLocalHost();
} catch (UnknownHostException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
textArea.setBackground(Color.GRAY);
textArea.setForeground(Color.WHITE);
textArea.setFont(textArea.getFont().deriveFont(Font.BOLD));
textArea.setBounds(10, 387, 632, 191);
textArea.setEditable(false); // might cause design view not to come up
frame.getContentPane().add(textArea);
JButton btnNewButton = new JButton("SSO REPAIR");
btnNewButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
btnNewButton.setBounds(36, 183, 132, 23);
frame.getContentPane().add(btnNewButton);
JLabel lblNewLabel = new JLabel("Batch File Fixes");
lblNewLabel.setFont(new Font("Tahoma", Font.BOLD, 12));
lblNewLabel.setBounds(53, 158, 115, 14);
frame.getContentPane().add(lblNewLabel);
JLabel lblIpAddress = new JLabel("IP Address:");
lblIpAddress.setFont(new Font("Tahoma", Font.BOLD, 14));
lblIpAddress.setBounds(261, 104, 102, 22);
frame.getContentPane().add(lblIpAddress);
JLabel label = null;
try {
label = new JLabel(Inet4Address.getLocalHost().getHostAddress()); // Get
// User
// ID
} catch (UnknownHostException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
label.setFont(new Font("Tahoma", Font.BOLD, 14));
label.setForeground(Color.RED);
label.setBounds(349, 105, 99, 21);
frame.getContentPane().add(label);
JLabel lblPcCommunication = new JLabel("PC Communication");
lblPcCommunication.setFont(new Font("Tahoma", Font.BOLD, 12));
lblPcCommunication.setBounds(279, 158, 115, 14);
frame.getContentPane().add(lblPcCommunication);
JButton btnPingComputer = new JButton("PING");
btnPingComputer.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
btnPingComputer.setBounds(306, 183, 64, 23);
frame.getContentPane().add(btnPingComputer);
JButton remoteAssistanceButton = new JButton(
"Remote Assistance by PC Name");
remoteAssistanceButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
remoteAssistanceButton.setBounds(215, 251, 246, 23);
frame.getContentPane().add(remoteAssistanceButton);
JButton btnPingIndefinetely = new JButton("PING INDEFINETELY");
btnPingIndefinetely.setBounds(260, 217, 156, 23);
frame.getContentPane().add(btnPingIndefinetely);
JButton btnRdcByIp = new JButton("RDC by IP Address");
btnRdcByIp.setBounds(261, 353, 156, 23);
frame.getContentPane().add(btnRdcByIp);
JButton btnRdcByName = new JButton("RDC by PC Name");
btnRdcByName.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
btnRdcByName.setBounds(248, 319, 180, 23);
frame.getContentPane().add(btnRdcByName);
JLabel lblLoggedInOpid = new JLabel("Logged in OPID:");
lblLoggedInOpid.setFont(new Font("Tahoma", Font.BOLD, 14));
lblLoggedInOpid.setBounds(228, 127, 135, 20);
frame.getContentPane().add(lblLoggedInOpid);
JLabel lblNewLabel_1 = new JLabel(System.getProperty("user.name")
.toUpperCase());
lblNewLabel_1.setFont(new Font("Tahoma", Font.BOLD, 14));
lblNewLabel_1.setForeground(Color.RED);
lblNewLabel_1.setBounds(348, 130, 86, 14);
frame.getContentPane().add(lblNewLabel_1);
JButton btnHiddenShare = new JButton("HIDDEN SHARE");
btnHiddenShare.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
btnHiddenShare.setBounds(484, 183, 132, 23);
frame.getContentPane().add(btnHiddenShare);
JLabel lblAdditionalTools = new JLabel("Tools");
lblAdditionalTools.setFont(new Font("Tahoma", Font.BOLD, 12));
lblAdditionalTools.setBounds(526, 157, 126, 20);
frame.getContentPane().add(lblAdditionalTools);
JButton btnNewButton_1 = new JButton("Remote Assistance by IP Address");
btnNewButton_1.setBounds(215, 285, 246, 23);
frame.getContentPane().add(btnNewButton_1);
JButton gpUpdate = new JButton("GP UPDATE");
gpUpdate.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
gpUpdate.setBounds(36, 217, 132, 23);
frame.getContentPane().add(gpUpdate);
JButton btnForced = new JButton("NURMED REG FIX");
btnForced.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
btnForced.setBounds(36, 251, 132, 23);
frame.getContentPane().add(btnForced);
JButton btnCleaConsoler = new JButton("CLEAR");
btnCleaConsoler.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textArea.setText("");
}
});
btnCleaConsoler.setBounds(563, 353, 79, 23);
frame.getContentPane().add(btnCleaConsoler);
JLabel lblOpid = new JLabel("Find Computer by OPID:");
lblOpid.setFont(new Font("Tahoma", Font.BOLD, 14));
lblOpid.setBounds(104, 53, 180, 14);
frame.getContentPane().add(lblOpid);
textField_1 = new JTextField();
textField_1.setBounds(285, 50, 124, 20);
frame.getContentPane().add(textField_1);
textField_1.setColumns(10);
JButton btnNewButton_2 = new JButton("Search");
btnNewButton_2.setBounds(419, 50, 89, 23);
frame.getContentPane().add(btnNewButton_2);
testLabel.setForeground(Color.RED);
testLabel.setFont(new Font("Tahoma", Font.BOLD, 14));
testLabel.setBounds(358, 78, 150, 24);
frame.getContentPane().add(testLabel);
}
private void threadStart() {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
testLabel.setText(CN);
}
});
}
}
我的建议再次是您应该：
- 如果需要，将批处理文件输出到标准输出、控制台。
- 通过从您的进程捕获 InputStream 和 ErrorStream 来捕获该输出。这些可以通过重定向错误流被困在一起。
- 您应该在后台线程中执行所有这些操作，例如使用 SwingWorker。
- 我将 SwingWorker 指定为
SwingWorker<Integer, String>类型，这样它就可以 "publish" 从其 InputStream 中读取字符串，然后它最终可以 return 进程的整数退出代码以确保进程 运行 正常。
例如，假设我在用户工作目录中有一个名为 test.bat 的 bat 文件，它只是打印出传递给它的路径的目录：
test.bat
dir %1
您可以从 GUI 调用它并使用上述技术显示结果。
请注意，我下面的代码大量借鉴了 MadProgrammer's wonderful answer that can be found here: Printing a Java InputStream from a Process。请检查他的回答，包括他的描述，如果它能帮助您更好地理解正在发生的事情，请点赞。
另请务必阅读 Concurrency in Swing 以了解有关如何执行后台线程处理的所有详细信息，尤其是 SwingWorker 在 Swing GUI 中的使用。
import java.awt.BorderLayout;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.function.Consumer;
import javax.swing.*;
@SuppressWarnings("serial")
public class TestBatGui extends JPanel {
public static final String BATCH_FILE_PATH = "test.bat";
private JTextArea resultArea = new JTextArea(30, 80);
public TestBatGui() {
resultArea.setFocusable(false); // not allow user edits
resultArea.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 12));
JScrollPane scrollPane = new JScrollPane(resultArea);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
JPanel buttonPanel = new JPanel(new GridLayout(1, 0, 5, 0));
int keyCode = KeyEvent.VK_H;
String path = System.getProperty("user.home");
buttonPanel.add(new JButton(new ShowDirAction("Home Dir", keyCode, path)));
keyCode = KeyEvent.VK_W;
path = System.getProperty("user.dir");
buttonPanel.add(new JButton(new ShowDirAction("Working Dir", keyCode,
path)));
setLayout(new BorderLayout());
add(scrollPane, BorderLayout.CENTER);
add(buttonPanel, BorderLayout.PAGE_END);
}
// Action/ActionListener to be used by my buttons
private class ShowDirAction extends AbstractAction {
private String path;
public ShowDirAction(String name, int keyCode, String path) {
super(name);
putValue(MNEMONIC_KEY, keyCode);
this.path = path;
}
@Override
public void actionPerformed(ActionEvent e) {
// our SwingWorker
BatchFileWorker batchFileWorker = new BatchFileWorker(
resultArea, BATCH_FILE_PATH, path);
// add a listener to respond when the worker is done
batchFileWorker.addPropertyChangeListener(new BatchFileWorkerListener());
batchFileWorker.execute(); // execute the worker
}
}
// class to listen for when the worker has completed its work
// and then this class extracts the SwingWorker's results via .get()
// and does house cleaning if need be.
private class BatchFileWorkerListener implements PropertyChangeListener {
@Override
public void propertyChange(PropertyChangeEvent evt) {
if (evt.getNewValue() == SwingWorker.StateValue.DONE) {
BatchFileWorker worker = (BatchFileWorker) evt.getSource();
try {
// extract the result returned from the worker's doInBackground() method
// and most importantly, trap any exceptions thrown
int exitValue = worker.get();
String displayText = "";
if (exitValue != 0) {
displayText = String.format("Error when running batch, Exit Value: %d", exitValue);
} else {
displayText = "Batch file ran without error";
}
((Consumer<String>) worker).accept(displayText);
((Consumer<String>) worker).accept("\n");
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
}
}
}
// Our SwingWorker. It's also a Consumer so that outside classes, namely the InputConsumer
// can pass the strings that it reads back into the worker via the accept(...) method
private class BatchFileWorker extends SwingWorker<Integer, String> implements Consumer<String> {
private JTextArea resultArea;
private String batchFilePath;
private String dirPath;
public BatchFileWorker(JTextArea resultArea, String batchFilePath,
String dirPath) {
this.resultArea = resultArea;
this.batchFilePath = batchFilePath;
this.dirPath = dirPath;
}
@Override
protected Integer doInBackground() throws Exception {
// command list to load into the process builder
List<String> commandList = new ArrayList<>();
int exitCode = 0;
publish("Getting dir for " + dirPath);
commandList.add("cmd");
commandList.add("/c");
commandList.add(batchFilePath);
commandList.add(dirPath);
// create the process builder
ProcessBuilder pBuilder = new ProcessBuilder(commandList);
// add the error stream to the input stream so now we have only one stream to handle
pBuilder.redirectErrorStream();
Process p = pBuilder.start(); // create our process
InputStream is = p.getInputStream(); // get its InputStream and use it
InputStreamReader isr = new InputStreamReader(is); // to create a
BufferedReader br = new BufferedReader(isr); // BufferedReader
InputConsumer consumer = new InputConsumer(br, this); // pass into our consumer object
Thread thread = new Thread(consumer); // start this in a background thread
thread.start();
exitCode = p.waitFor(); // wait in this thread for the error code
thread.join(); // join two threads
br.close(); // close the BufferedReader
return exitCode;
}
@Override // this allows our InputConsumer to pass Strings read back into the SwingWorker
public void accept(String text) {
publish(text);
}
@Override // published text will be sent here on the EDT, to be placed into the JTextArea
protected void process(List<String> chunks) {
for (String chunk : chunks) {
resultArea.append(chunk + "\n");
}
}
}
// to read in from the BufferedReader, passing text back into its consumer
private class InputConsumer implements Runnable {
private BufferedReader br;
private Consumer<String> consumer;
public InputConsumer(BufferedReader br, Consumer<String> consumer) {
this.br = br;
this.consumer = consumer;
}
@Override
public void run() {
String line = null;
try {
while ((line = br.readLine()) != null) {
consumer.accept(line);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
private static void createAndShowGui() {
TestBatGui mainPanel = new TestBatGui();
JFrame frame = new JFrame("TestBatGui");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}