CloudBuilder.Topshelf/Python/PythonCommand.cs

using CloudBuilder.Core.DatabaseAccessor.Entity;
using Python.Runtime;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CloudBuilder.Topshelf.Python
{
    public class PythonCommand
    {
        private bool _disposed = false; // 释放标记
        public dynamic PythonCreateScope { get; set; }
        public IApplicationService ApplicationService;
        public PythonCommand(IApplicationService applicationService)
        {
            ApplicationService = applicationService;

            Runtime.PythonDLL = applicationService.Configuration["Python:PythonCommand"];
            PythonEngine.PythonHome = Path.GetDirectoryName(Runtime.PythonDLL); 
            PythonEngine.Initialize();

            PythonCreateScope = Py.CreateScope();
        }

        public void Exec(string arg)
        {
            using (Py.GIL())
            {
                PythonCreateScope.Exec(arg);//"from pyhanlp import HanLP"
            }
        }

        public string GetValueExec(string arg)
        {
            using (Py.GIL())
            {
                PythonCreateScope.Exec(string.Format("s_value={0}", arg));

                var value = PythonCreateScope.Eval("s_value");

                return value.ToString();
            }
        }

        public string[] GetValuesExec(string arg)
        {
            using (Py.GIL())
            {
                PythonCreateScope.Exec(string.Format("s_list={0}", arg));

                var value = PythonCreateScope.Eval("s_list");

                string[] st = value.As<string[]>();

                return st;
            }
        }

        // 核心：释放 Python.NET 资源
        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this); // 阻止析构函数重复执行
        }

        protected virtual void Dispose(bool disposing)
        {
            if (_disposed) return;

            // 1. 释放 Python 作用域
            if (PythonCreateScope != null)
            {
                PythonCreateScope.Dispose();
                PythonCreateScope = null;
            }

            // 2. 关闭 Python 运行时（关键！）
            if (PythonEngine.IsInitialized)
            {
                AppContext.SetSwitch("System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization", true);

                PythonEngine.Shutdown(); // 销毁 Python 解释器
            }

            _disposed = true;
        }
    }
}