MongoDB Web API 快速入门指南

using Microsoft.AspNetCore.Mvc;
using MongoDB.Bson.Serialization.Attributes;
using MongoDB.Driver;
using System.Collections.Generic;
using System.Threading.Tasks;
 
namespace ExampleMongoDBWebAPI.Controllers
{
    public class UsersController : Controller
    {
        private readonly IMongoCollection<User> _users;
 
        public UsersController(IMongoCollection<User> users)
        {
            _users = users;
        }
 
        [HttpGet]
        public async Task<ActionResult<IEnumerable<User>>> GetAll()
        {
            return await _users.Find(new BsonDocument()).ToListAsync();
        }
 
        [HttpGet("{id:length(24)}")]
        public async Task<ActionResult<User>> GetById(string id)
        {
            var user = await _users.Find(u => u.Id == id).FirstOrDefaultAsync;
            if (user == null)
            {
                return NotFound();
            }
            return user;
        }
 
        [HttpPost]
        public async Task<ActionResult<User>> Create(User user)
        {
            user.Id = ObjectId.GenerateNewId().ToString();
            await _users.InsertOneAsync(user);
            return CreatedAtRoute(nameof(GetById), new { id = user.Id }, user);
        }
 
        [HttpDelete("{id:length(24)}")]
        public async Task<IActionResult> Delete(string id)
        {
            var deleteResult = await _users.DeleteOneAsync(u => u.Id == id);
            if (deleteResult.DeletedCount == 0)
            {
                return NotFound();
            }
            return NoContent();
        }
    }
 
    public class User
    {
        [BsonId]
        [BsonRepresentation(BsonType.ObjectId)]
        public string Id { get; set; }
 
        public string Name { get; set; }
 
        public string Email { get; set; }
    }
}

这个代码示例展示了如何使用ASP.NET Core MVC创建一个简单的MongoDB Web API控制器。它包括了基本的CRUD操作，并使用了MongoDB的官方驱动程序来与数据库交互。这个示例对于学习如何将MongoDB集成到Web API应用程序中是非常有用的。