package org.example;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;

public class ShellCommandExecutor {
    public static void main(String[] args) {
        try {
            // 使用 cmd.exe
            ProcessBuilder processBuilder = new ProcessBuilder();
            processBuilder.command("cmd.exe", "/c", "echo Hello, World!");

            Process process = processBuilder.start();

            BufferedReader stdInput = new BufferedReader(new InputStreamReader(process.getInputStream()));
            BufferedReader stdError = new BufferedReader(new InputStreamReader(process.getErrorStream()));

            String line;
            while ((line = stdInput.readLine()) != null) {
                System.out.println("OUTPUT: " + line);
            }
            while ((line = stdError.readLine()) != null) {
                System.out.println("ERROR: " + line);
            }

            int exitCode = process.waitFor();
            System.out.println("Exited with code: " + exitCode);
        } catch (IOException | InterruptedException e) {
            e.printStackTrace();
        }
    }
}

package com.github.houbb.value.extraction.core.support.extraction;

import com.github.houbb.value.extraction.api.ValueExtractionContext;
import org.python.util.PythonInterpreter;

/**
 *
 * @author 老马啸西风
 * @since 0.8.0
 */
public class ValueExtractionPython extends AbstractValueExtractionAdaptor {

    /**
     * 参数上下文
     */
    public static final String DATA_MAP = "dataMap";
    /**
     * 结果值
     */
    public static final String RESULT = "result";

    @Override
    protected PythonInterpreter prepare(ValueExtractionContext context) {
        PythonInterpreter interpreter = new PythonInterpreter();

        // 将 Map 传递给 Python
        interpreter.set(DATA_MAP, context.getDataMap());
        return interpreter;
    }

    @Override
    protected Object evaluate(PythonInterpreter prepareObject, String script, ValueExtractionContext context) {
        // 在 Python 中截断字符串
        prepareObject.exec(script);

        // 约定把结果放在 result 中
        return prepareObject.get(RESULT);
    }

}