Java implementation detects whether a program is running under the local specified path

The project has a requirement to wake up the local desktop program through a web page hyperlink, and there is a small bug that repeatedly opens the desktop program. An interface needs to be opened in the background to determine whether the local desktop program is open. It can be achieved by the following simple method.

To detect whether a program is running under the specified local path, you can use the Java ProcessBuilder class to achieve. Here is a sample code:

Take todesk remote software as an example

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
 
public class ProgramRunningCheck {
 
    public static void main(String[] args) {
        String programPath = "C:\Program Files (x86)\ToDesk\ToDesk.exe"; // 要检测的程序路径
 
        if (isProgramRunning(programPath)) {
            System.out.println(programPath + " is running.");
        } else {
            System.out.println(programPath + " is not running.");
        }
    }
 
    public static boolean isProgramRunning(String programPath) {
        boolean isRunning = false;
        String os = System.getProperty("os.name").toLowerCase();
 
        File programFile = new File(programPath);
        String programName = programFile.getName();
 
        try {
            ProcessBuilder processBuilder;
            if (os.contains("win")) {
                // Windows系统
                processBuilder = new ProcessBuilder("tasklist");
            } else {
                // 非Windows系统
                processBuilder = new ProcessBuilder("ps", "-e");
            }
 
            Process process = processBuilder.start();
            InputStream inputStream = process.getInputStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
 
            String line;
            while ((line = reader.readLine()) != null) {
                if (line.contains(programName)) {
                    isRunning = true;
                    break;
                }
            }
 
            reader.close();
            inputStream.close();
            process.destroy();
 
        } catch (IOException e) {
            e.printStackTrace();
        }
 
        return isRunning;
    }
}

Test Results

 Implementation logic description:

Use ProcessBuilderto execute an operating system command to get a list of running programs. In the Windows system, use tasklistthe command to obtain the program list; in the non-Windows system, use ps -ethe command to obtain the program list.

Then traverse the obtained program list to determine whether the program name to be detected is included, and if it is included, it means that the program is running.

Please modify programPaththe value of the variable according to the actual situation so that it points to the program path to be detected.