springboot中java代码执行shell命令

在Spring Boot中，你可以通过`ProcessBuilder`、`Runtime`类或者第三方库如`Executors`来执行Shell命令。这里以`ProcessBuilder`为例说明：

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class ShellCommandExecutor {

    public String executeCommand(String command) {
        try {
            Process process = new ProcessBuilder(command.split(" ")).start();
            
            // 获取输出
            BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
            StringBuilder output = new StringBuilder();
            String line;
            while ((line = reader.readLine()) != null) {
                output.append(line).append("\n");
            }
            reader.close();

            int exitCode = process.waitFor(); // 等待命令结束并获取退出码

            if (exitCode == 0) {
                return output.toString(); // 如果命令成功，返回输出
            } else {
                throw new RuntimeException("Shell command failed with exit code: " + exitCode);
            }

        } catch (IOException | InterruptedException e) {
            throw new RuntimeException("Failed to execute shell command", e);
        }
    }
}

在这个例子中，你首先创建一个`ProcessBuilder`实例，然后使用`start()`方法启动Shell命令。通过读取`InputStream`获取命令的输出，`waitFor()`用于等待命令执行完成。