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C# WebAPI

news 2026/4/11 7:13:35

Install-Package Swashbuckle.AspNetCore

namespace WebApplication1.Models
{public class Book{public int Id { get; set; }public string Name { get; set;  }public string ISBN { get; set;  }public string Author { get; set;  }public string Abstract {  get; set; }public string Comment { get; set;  }public string Content { get; set; }public string Summary { get; set;  }public string Title { get; set;  }public string Topic { get; set;  }}
}using WebApplication1.Models;namespace WebApplication1.Services
{public class BookService{static int Idx = 0;private int GetIdx(){return Interlocked.Increment(ref Idx);}public List<Book> GetBooksList(){List<Book> booksList=new List<Book>();for(int i=0;i<1000;i++){var idx=GetIdx();var bk = new Book(){Id=idx,Name=$"Name_{idx}",ISBN=$"ISBN_{idx}_{Guid.NewGuid():N}",Author=$"Author_{idx}",Abstract=$"Abstract_{idx}",Comment=$"Comment_{idx}",Content=$"Content_{idx}",Summary=$"Summary_{idx}",Title=$"Title_{idx}",Topic=$"Topic_{idx}"};booksList.Add(bk);}return booksList;}}
}using Microsoft.AspNetCore.Mvc;
using WebApplication1.Models;
using WebApplication1.Services;namespace WebApplication1.Controllers
{[ApiController][Route("api/[controller]")]public class BookController : Controller{private readonly BookService bkService;public BookController(BookService bkServiceValue){bkService = bkServiceValue;}[HttpGet][ProducesResponseType(StatusCodes.Status200OK)]public ActionResult<List<Book>> GetBooks(){var books = bkService.GetBooksList();return Ok(books);}[HttpGet("{id}")][ProducesResponseType(StatusCodes.Status200OK)][ProducesResponseType(StatusCodes.Status404NotFound)]public ActionResult<Book> GetBookById(int id){var books = bkService.GetBooksList();var bk=books.FirstOrDefault(x => x.Id == id);if(bk==null){return NotFound($"Can't find book whose ID is {id}");}return Ok(bk);}}
}using WebApplication1.Services;namespace WebApplication1
{public class Program{public static void Main(string[] args){var builder = WebApplication.CreateBuilder(args);// Add services to the container.
builder.Services.AddControllers();// Learn more about configuring OpenAPI at https://aka.ms/aspnet/openapi
            builder.Services.AddOpenApi();builder.Services.AddSingleton<BookService>();builder.Services.AddEndpointsApiExplorer();builder.Services.AddSwaggerGen();var app = builder.Build();// Configure the HTTP request pipeline.if (app.Environment.IsDevelopment()){app.MapOpenApi();app.UseSwagger();app.UseSwaggerUI();}app.UseHttpsRedirection();app.UseAuthorization();app.MapControllers();app.Run();}}
}

https://localhost:7205/api/book/9250

{"id": 9250,"name": "Name_9250","isbn": "ISBN_9250_3d940005204f46abb2bd3ced7e17b4a8","author": "Author_9250","abstract": "Abstract_9250","comment": "Comment_9250","content": "Content_9250","summary": "Summary_9250","title": "Title_9250","topic": "Topic_9250"
}