.Net Core Web Api连接MongoDB自动创建表格并实现CRUD功能

以下是一个使用ASP.NET Core Web API连接MongoDB，并实现创建（Create）、读取（Read）、更新（Update）和删除（Delete）功能的简化示例。

首先，确保你已经安装了MongoDB，并在项目中安装了MongoDB.Driver。

// 使用MongoDB.Driver连接MongoDB并创建MongoClient实例
using MongoDB.Driver;
 
public class MongoDbService
{
    private readonly IMongoCollection<YourEntity> _collection;
 
    public MongoDbService(string connectionString, string databaseName, string collectionName)
    {
        var client = new MongoClient(connectionString);
        var database = client.GetDatabase(databaseName);
        _collection = database.GetCollection<YourEntity>(collectionName);
    }
 
    // 创建记录
    public async Task CreateAsync(YourEntity entity)
    {
        await _collection.InsertOneAsync(entity);
    }
 
    // 读取记录
    public async Task<List<YourEntity>> ReadAsync()
    {
        return await _collection.Find(entity => true).ToListAsync();
    }
 
    // 更新记录
    public async Task UpdateAsync(string id, YourEntity entity)
    {
        await _collection.ReplaceOneAsync(e => e.Id == id, entity);
    }
 
    // 删除记录
    public async Task DeleteAsync(string id)
    {
        await _collection.DeleteOneAsync(e => e.Id == id);
    }
}
 
// 实体类YourEntity，应该包含Id属性
public class YourEntity
{
    [BsonId]
    public string Id { get; set; }
    // 其他属性...
}

在你的Startup.cs中配置服务：

public void ConfigureServices(IServiceCollection services)
{
    services.AddControllers();
    services.AddSingleton<MongoDbService>();
}

在你的Controller中使用MongoDbService：

[ApiController]
[Route("[controller]")]
public class YourController : ControllerBase
{
    private readonly MongoDbService _mongoDbService;
 
    public YourController(MongoDbService mongoDbService)
    {
        _mongoDbService = mongoDbService;
    }
 
    [HttpPost]
    public async Task<IActionResult> Create(YourEntity entity)
    {
        await _mongoDbService.CreateAsync(entity);
        return Ok(entity);
    }
 
    [HttpGet]
    public async Task<IActionResult> Read()
    {
        var entities = await _mongoDbService.ReadAsync();
        return Ok(entities);
    }
 
    [HttpPut("{id}")]
    public async Task<IActionResult> Update(string id, YourEntity entity)
    {
        await _mongoDbService.UpdateAsync(id, entity);
        return Ok(entity);
    }
 
    [HttpDelete("{id}")]
    public async Task<IAction