C# I';当我试图上传一篇关于我的项目的帖子时,我遇到了一个405错误
在我的开发博客上上传帖子时遇到问题。我正在尝试使用MVC框架上传帖子。关于如何建立一个博客,我试图遵循大量的指南 这是邮政课C# I';当我试图上传一篇关于我的项目的帖子时,我遇到了一个405错误,c#,asp.net-mvc,model-view-controller,asp.net-mvc-5,asp.net-core-mvc,C#,Asp.net Mvc,Model View Controller,Asp.net Mvc 5,Asp.net Core Mvc,在我的开发博客上上传帖子时遇到问题。我正在尝试使用MVC框架上传帖子。关于如何建立一个博客,我试图遵循大量的指南 这是邮政课 using System; using System.Collections.Generic; using System.ComponentModel.DataAnnotations; using System.ComponentModel.DataAnnotations.Schema; using System.Linq; using System.Threading.
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;
using System.Threading.Tasks;
namespace ProjectWebApp.Models
{
public class Post
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int PostID { get; set; }
[Required]
public string Title { get; set; }
[Required]
public string Content { get; set; }
public string Author { get; set; }
public int Likes { get; set; }
[Required]
public DateTime DateCreated { get; set; }
public DateTime? DateUpdated { get; set; }
public ICollection<PostTag> PostTags { get; set; }
}
}
使用系统;
使用System.Collections.Generic;
使用System.ComponentModel.DataAnnotations;
使用System.ComponentModel.DataAnnotations.Schema;
使用System.Linq;
使用System.Threading.Tasks;
命名空间ProjectWebApp.Models
{
公营职位
{
[关键]
[数据库生成(DatabaseGeneratedOption.Identity)]
公共int PostID{get;set;}
[必需]
公共字符串标题{get;set;}
[必需]
公共字符串内容{get;set;}
公共字符串作者{get;set;}
公共int类{get;set;}
[必需]
public DateTime DateCreated{get;set;}
公共日期时间?日期更新{get;set;}
公共ICollection后标记{get;set;}
}
}
以下是BlogDBContext:
using Project.Models;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
namespace ProjectBlogWebApp.Data
{
public class BlogDbContext : DbContext
{
public BlogDbContext(DbContextOptions<BlogDbContext> options) : base(options)
{
Database.EnsureDeleted();
if (Database.EnsureCreated() == true)
{
Database.EnsureCreated();
}
}
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.Entity<PostTag>().HasKey(p => new {p.PostID, p.TagID});
modelBuilder.Entity<PostTag>().HasOne(pt => pt.Post).WithMany(p => p.PostTags)
.HasForeignKey(pt => pt.PostID);
modelBuilder.Entity<PostTag>().HasOne(pt => pt.Tag).WithMany(t => t.PostTags)
.HasForeignKey(pt => pt.TagID);
}
public DbSet<Post> Posts { get; set; }
public DbSet<Tag> Tags { get; set; }
public DbSet<PostTag> PostTags { get; set; }
}
}
使用项目模型;
使用Microsoft.EntityFrameworkCore;
使用制度;
使用System.Collections.Generic;
使用System.Linq;
使用System.Threading.Tasks;
命名空间ProjectBlogWebApp.Data
{
公共类BlogDbContext:DbContext
{
公共BlogDbContext(DbContextOptions选项):基本(选项)
{
数据库。确保已删除();
if(Database.recreated()==true)
{
数据库。请重新创建();
}
}
模型创建时受保护的覆盖无效(ModelBuilder ModelBuilder)
{
modelBuilder.Entity().HasKey(p=>new{p.PostID,p.TagID});
modelBuilder.Entity().HasOne(pt=>pt.Post).WithMany(p=>p.PostTags)
.HasForeignKey(pt=>pt.posted);
modelBuilder.Entity().HasOne(pt=>pt.Tag).WithMany(t=>t.PostTags)
.HasForeignKey(pt=>pt.TagID);
}
公共DbSet Posts{get;set;}
公共DbSet标记{get;set;}
公共DbSet PostTags{get;set;}
}
}
以下是PostController类:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using ProjectWebApp.Data;
using ProjectWebApp.Models;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.ModelBinding;
using Microsoft.EntityFrameworkCore;
namespace ProjectWebApp.Controllers
{
public class PostController : Controller
{
private BlogDbContext _dbBlogContext;
public PostController(BlogDbContext dbContext)
{
_dbBlogContext = dbContext;
}
public IActionResult Index()
{
var postList = _dbBlogContext.Posts.ToList();
return View(postList);
}
[HttpGet, Route("Create")]
public IActionResult Create()
{
return View(new Post());
}
[HttpGet, Route("Edit")]
public IActionResult Edit()
{
return View();
}
[HttpPost]
public async Task<IActionResult> CreatePostAsync([Bind("Title", "Content")] Post post)
{
try
{
post.Likes = 0;
post.DateCreated = DateTime.Now;
post.Author = "Leonard Morrison";
_dbBlogContext.Add(post);
await _dbBlogContext.SaveChangesAsync();
}
catch (DbUpdateException)
{
ModelState.TryAddModelError( "Error: Post was not added properly!", "Sorry, the Post was not added properly. Please let me know if this problem persists");
}
return View(post);
}
[HttpGet]
public IActionResult Show(int ID)
{
var post = getPost(ID);
return View(post);
}
[HttpGet]
public IActionResult Edit(int ID)
{
var post = getPost(ID);
return View(post);
}
[HttpPatch]
public IActionResult Update(int id)
{
var post = _dbBlogContext.Posts.Find(id);
_dbBlogContext.Posts.Update(post);
return RedirectToAction("Index");
}
[HttpDelete]
public IActionResult RemovePost(int id)
{
Post deletedPost = getPost(id);
_dbBlogContext.Posts.Remove(deletedPost);
_dbBlogContext.SaveChanges();
return RedirectToAction("Index");
}
public Post getPost(int ID)
{
var post = _dbBlogContext.Posts.First(p => p.PostID == ID);
return post;
}
}
}
使用系统;
使用System.Collections.Generic;
使用System.Linq;
使用System.Threading.Tasks;
使用ProjectWebApp.Data;
使用ProjectWebApp.Models;
使用Microsoft.AspNetCore.Mvc;
使用Microsoft.AspNetCore.Mvc.ModelBinding;
使用Microsoft.EntityFrameworkCore;
命名空间ProjectWebApp.Controllers
{
公共类后控制器:控制器
{
私有blogdbContextu dbBlogContext;
公共PostController(BlogDbContext)
{
_dbBlogContext=dbContext;
}
公共IActionResult索引()
{
var postList=_dbBlogContext.Posts.ToList();
返回视图(postList);
}
[HttpGet,路由(“创建”)]
public IActionResult Create()
{
返回视图(newpost());
}
[HttpGet,路由(“编辑”)]
公共IActionResult编辑()
{
返回视图();
}
[HttpPost]
公共异步任务CreatePostAsync([Bind(“Title”、“Content”)]Post-Post)
{
尝试
{
post.Likes=0;
post.DateCreated=DateTime.Now;
post.Author=“伦纳德·莫里森”;
_dbBlogContext.Add(post);
wait_dbBlogContext.SaveChangesAsync();
}
捕获(DbUpdateException)
{
ModelState.tryaddmodeleror(“错误:未正确添加帖子!”,“抱歉,帖子未正确添加。如果此问题仍然存在,请通知我”);
}
返回视图(post);
}
[HttpGet]
公共IActionResult Show(内部ID)
{
var post=getPost(ID);
返回视图(post);
}
[HttpGet]
公共IActionResult编辑(内部ID)
{
var post=getPost(ID);
返回视图(post);
}
[HttpPatch]
公共IActionResult更新(内部id)
{
var post=_dbBlogContext.Posts.Find(id);
_dbBlogContext.Posts.Update(post);
返回操作(“索引”);
}
[HttpDelete]
公共IActionResult RemovePost(内部id)
{
Post deletedPost=getPost(id);
_dbBlogContext.Posts.Remove(deletedPost);
_dbBlogContext.SaveChanges();
返回操作(“索引”);
}
公共Post getPost(内部ID)
{
var post=_dbBlogContext.Posts.First(p=>p.PostID==ID);
回程站;
}
}
}
最后,这里是启动源代码:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using ProjectWebApp.Data;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.EntityFrameworkCore;
using Microsoft.AspNetCore.Http;
namespace ProjectBlogWebApp
{
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.AddControllersWithViews();
services.AddDbContext<BlogDbContext>(options => options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));
services.AddScoped<BlogDbContext, BlogDbContext>();
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseExceptionHandler("/Home/Error");
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthorization();
//The Main EndPoint Routes
app.UseEndpoints(endpoints =>
{
endpoints.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id}");
});
//The Post Endpoints Routes
app.UseEndpoints(endpoints =>
{
endpoints.MapControllerRoute(name: "post",
pattern: "{controller=Post}/{action=Index}/{title?}");
});
}
}
}
使用系统;
使用System.Collections.Generic;
使用System.Linq;
使用System.Threading.Tasks;
使用ProjectWebApp.Data;
使用Microsoft.AspNetCore.Builder;
使用Microsoft.AspNetCore.Hosting;
使用Microsoft.AspNetCore.HttpsPolicy;
使用Microsoft.Extensions.Configuration;
使用Microsoft.Extensions.DependencyInjection;
使用Microsoft.Extensions.Hosting;
使用Microsoft.EntityFrameworkCore;
使用Microsoft.AspNetCore.Http;
命名空间ProjectBlogWebApp
{
公营创业
{
公共启动(IConfiguration配置)
{
配置=配置;
}
公共IConfiguration配置{get;}
//此方法由运行时调用。请使用此方法将服务添加到容器中。
public void配置服务(IServiceCollection服务)
{
services.AddControllersWithViews();
services.AddDbContext(options=>options.UseSqlServer(Configuration.GetConnectionString(“DefaultConnection”));
services.addScope();
}
//此方法由运行时调用。请使用此方法配置
[HttpPost]
[Route("Create")]
public async Task<IActionResult> CreatePostAsync([Bind("Title", "Content")] Post post)