.NET MVC实现电影票管理

code_shenbing2025-02-23 6:04

.NET MVC （Model-View-Controller）是微软推出的基于 Model-View-Controller 设计模式的 Web 应用框架，属于 ASP.NET Core 的重要组成部分。其核心目标是通过清晰的分层架构实现 高内聚、低耦合 的开发模式，适用于构建可扩展的企业级应用程序。

Model（模型层）

  • 职责 ：

    负责业务逻辑处理、数据访问与验证，通常与数据库交互（通过 ORM 工具如 Entity Framework）。

  • View（视图层）

  • 职责 ：

    负责用户界面渲染，通常使用 Razor 语法（.cshtml 文件）动态生成 HTML。

Controller（控制器层）

  • 职责 ：

    处理 HTTP 请求、协调 Model 和 View，实现业务逻辑的入口。

Model

cs 复制代码 
namespace MvcMovie.Models
{
    public class ErrorViewModel
    {
        public string? RequestId { get; set; }

        public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
    }
}
cs 复制代码 
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace MvcMovie.Models;

public class Movie
{
    public int Id { get; set; }
    [StringLength(60, MinimumLength = 3)]
    [Required]
    public string? Title { get; set; }

    [Display(Name = "Release Date")]
    [DataType(DataType.Date)]
    public DateTime ReleaseDate { get; set; }

    [Range(1, 100)]
    [DataType(DataType.Currency)]
    [Column(TypeName = "decimal(18, 2)")]
    public decimal Price { get; set; }

    [RegularExpression(@"^[A-Z]+[a-zA-Z\s]*$")]
    [Required]
    [StringLength(30)]
    public string? Genre { get; set; }

    [RegularExpression(@"^[A-Z]+[a-zA-Z0-9""'\s-]*$")]
    [StringLength(5)]
    [Required]
    public string? Rating { get; set; }
}
cs 复制代码 
using Microsoft.AspNetCore.Mvc.Rendering;

namespace MvcMovie.Models;

public class MovieGenreViewModel
{
    public List<Movie>? Movies { get; set; }
    public SelectList? Genres { get; set; }
    public string? MovieGenre { get; set; }
    public string? SearchString { get; set; }
}
cs 复制代码 
using Microsoft.EntityFrameworkCore;
using MvcMovie.Data;

namespace MvcMovie.Models;

public static class SeedData
{
    public static void Initialize(IServiceProvider serviceProvider)
    {
        using (var context = new MvcMovieContext(
            serviceProvider.GetRequiredService<
                DbContextOptions<MvcMovieContext>>()))
        {
            // Look for any movies.
            if (context.Movie.Any())
            {
                return;   // DB has been seeded
            }
            context.Movie.AddRange(
                new Movie
                {
                    Title = "When Harry Met Sally",
                    ReleaseDate = DateTime.Parse("1989-2-12").ToUniversalTime(),
                    Genre = "Romantic Comedy",
                    Rating = "R",
                    Price = 7.99M
                },
                new Movie
                {
                    Title = "Ghostbusters ",
                    ReleaseDate = DateTime.Parse("1984-3-13").ToUniversalTime(),
                    Genre = "Comedy",
                    Rating = "R",
                    Price = 8.99M
                },
                new Movie
                {
                    Title = "Ghostbusters 2",
                    ReleaseDate = DateTime.Parse("1986-2-23").ToUniversalTime(),
                    Genre = "Comedy",
                    Rating = "R",
                    Price = 9.99M
                },
                new Movie
                {
                    Title = "Rio Bravo",
                    ReleaseDate = DateTime.Parse("1959-4-15").ToUniversalTime(),
                    Genre = "Western",
                    Rating = "R",
                    Price = 3.99M
                }
            );
            context.SaveChanges();
        }
    }
}

View

部分view代码，完整代码在文末获取。

html 复制代码 
@model MvcMovie.Models.Movie

@{
    ViewData["Title"] = "Create";
}

<h1>Create</h1>

<h4>Movie</h4>
<hr />
<div class="row">
    <div class="col-md-4">
        <form asp-action="Create">
            <div asp-validation-summary="ModelOnly" class="text-danger"></div>
            <div class="form-group">
                <label asp-for="Title" class="control-label"></label>
                <input asp-for="Title" class="form-control" />
                <span asp-validation-for="Title" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="Rating" class="control-label"></label>
                <input asp-for="Rating" class="form-control" />
                <span asp-validation-for="Rating" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="ReleaseDate" class="control-label"></label>
                <input asp-for="ReleaseDate" class="form-control" />
                <span asp-validation-for="ReleaseDate" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="Genre" class="control-label"></label>
                <input asp-for="Genre" class="form-control" />
                <span asp-validation-for="Genre" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="Price" class="control-label"></label>
                <input asp-for="Price" class="form-control" />
                <span asp-validation-for="Price" class="text-danger"></span>
            </div>

            <div class="form-group">
                <input type="submit" value="Create" class="btn btn-primary" />
            </div>
        </form>
    </div>
</div>

<div>
    <a asp-action="Index">Back to List</a>
</div>

@section Scripts {
    @{await Html.RenderPartialAsync("_ValidationScriptsPartial");}
}

Controller

cs 复制代码 
using Microsoft.AspNetCore.Mvc;

namespace MvcMovie.Controllers;

public class HelloWorldController : Controller
{
    public IActionResult Index()
    {
        return View();
    }

    public IActionResult Welcome(string name, int numTimes = 1)
    {
        ViewData["Message"] = "Hello " + name;
        ViewData["NumTimes"] = numTimes;
        return View();
    }
}
cs 复制代码 
using Microsoft.AspNetCore.Mvc;
using MvcMovie.Models;
using System.Diagnostics;

namespace MvcMovie.Controllers
{
    public class HomeController : Controller
    {
        private readonly ILogger<HomeController> _logger;

        public HomeController(ILogger<HomeController> logger)
        {
            _logger = logger;
        }

        public IActionResult Index()
        {
            return View();
        }

        public IActionResult Privacy()
        {
            return View();
        }

        [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
        public IActionResult Error()
        {
            return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
        }
    }
}
cs 复制代码 
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Rendering;
using Microsoft.EntityFrameworkCore;
using MvcMovie.Data;
using MvcMovie.Models;

namespace MvcMovie.Controllers
{
    public class MoviesController : Controller
    {
        private readonly MvcMovieContext _context;

        public MoviesController(MvcMovieContext context)
        {
            _context = context;
        }

        // GET: Movies
        public async Task<IActionResult> Index(string movieGenre, string searchString)
        {
            if (_context.Movie == null)
            {
                return Problem("Entity set 'MvcMovieContext.Movie'  is null.");
            }

            // Use LINQ to get list of genres.
            IQueryable<string> genreQuery = from m in _context.Movie
                                            orderby m.Genre
                                            select m.Genre;
            var movies = from m in _context.Movie
                         select m;

            if (!string.IsNullOrEmpty(searchString))
            {
                movies = movies.Where(s => s.Title!.ToUpper().Contains(searchString.ToUpper()));
            }

            if (!string.IsNullOrEmpty(movieGenre))
            {
                movies = movies.Where(x => x.Genre == movieGenre);
            }

            var movieGenreVM = new MovieGenreViewModel
            {
                Genres = new SelectList(await genreQuery.Distinct().ToListAsync()),
                Movies = await movies.ToListAsync()
            };

            return View(movieGenreVM);
        }

        // GET: Movies/Details/5
        public async Task<IActionResult> Details(int? id)
        {
            if (id == null)
            {
                return NotFound();
            }

            var movie = await _context.Movie
                .FirstOrDefaultAsync(m => m.Id == id);
            if (movie == null)
            {
                return NotFound();
            }

            return View(movie);
        }

        // GET: Movies/Create
        public IActionResult Create()
        {
            return View();
        }

        // POST: Movies/Create
        // To protect from overposting attacks, enable the specific properties you want to bind to.
        // For more details, see http://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> Create([Bind("Id,Title,ReleaseDate,Genre,Price,Rating")] Movie movie)
        {
            if (ModelState.IsValid)
            {
                movie.ReleaseDate = movie.ReleaseDate.ToUniversalTime();
                _context.Add(movie);
                await _context.SaveChangesAsync();
                return RedirectToAction(nameof(Index));
            }
            return View(movie);
        }

        // GET: Movies/Edit/5
        public async Task<IActionResult> Edit(int? id)
        {
            if (id == null)
            {
                return NotFound();
            }

            var movie = await _context.Movie.FindAsync(id);
            if (movie == null)
            {
                return NotFound();
            }
            return View(movie);
        }

        // POST: Movies/Edit/5
        // To protect from overposting attacks, enable the specific properties you want to bind to.
        // For more details, see http://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> Edit(int id, [Bind("Id,Title,ReleaseDate,Genre,Price,Rating")] Movie movie)
        {
            if (id != movie.Id)
            {
                return NotFound();
            }

            if (ModelState.IsValid)
            {
                try
                {
                    _context.Update(movie);
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException)
                {
                    if (!MovieExists(movie.Id))
                    {
                        return NotFound();
                    }
                    else
                    {
                        throw;
                    }
                }
                return RedirectToAction(nameof(Index));
            }
            return View(movie);
        }

        // GET: Movies/Delete/5
        public async Task<IActionResult> Delete(int? id)
        {
            if (id == null)
            {
                return NotFound();
            }

            var movie = await _context.Movie
                .FirstOrDefaultAsync(m => m.Id == id);
            if (movie == null)
            {
                return NotFound();
            }

            return View(movie);
        }

        // POST: Movies/Delete/5
        [HttpPost, ActionName("Delete")]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> DeleteConfirmed(int id)
        {
            var movie = await _context.Movie.FindAsync(id);
            if (movie != null)
            {
                _context.Movie.Remove(movie);
            }

            await _context.SaveChangesAsync();
            return RedirectToAction(nameof(Index));
        }

        private bool MovieExists(int id)
        {
            return _context.Movie.Any(e => e.Id == id);
        }
    }
}

完整代码：

https://download.csdn.net/download/XiaoWang_csdn/90418392

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