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所属分类：.NET技术
自己制作的一个基于Entity Framework Core 的数据库操作拦截器，可以打印数据库执行sql，方便开发调试，代码如下：
/// <summary> /// EF Core 的数据库操作拦截器，用于在数据库操作过程中进行日志记录和监视。 /// </summary> /// <remarks> /// 作者：我只吃饭不洗碗 /// 创建日期：2024年1月29日 /// </remarks> public class LoggingInterceptor : DbCommandInterceptor { /// <summary> /// 在执行查询命令之前拦截并输出日志。 /// </summary> /// <param name="command">要执行的查询命令。</param> /// <param name="eventData">命令事件数据。</param> /// <param name="result">拦截结果。</param> /// <returns>拦截结果。</returns> public override InterceptionResult<DbDataReader> ReaderExecuting(DbCommand command, CommandEventData eventData, InterceptionResult<DbDataReader> result) { var fullCommandText = command.CommandText; foreach (DbParameter param in command.Parameters) { var paramValue = param.Value is string ? $"'{param.Value}'" : param.Value.ToString(); fullCommandText = fullCommandText.Replace(param.ParameterName, paramValue); } Console.WriteLine($"Executing query: {fullCommandText}"); return base.ReaderExecuting(command, eventData, result); } /// <summary> /// 在执行非查询命令之前拦截并输出日志。 /// </summary> /// <param name="command">要执行的非查询命令。</param> /// <param name="eventData">命令事件数据。</param> /// <param name="result">拦截结果。</param> /// <returns>拦截结果。</returns> public override InterceptionResult<int> NonQueryExecuting(DbCommand command, CommandEventData eventData, InterceptionResult<int> result) { var fullCommandText = command.CommandText; foreach (DbParameter param in command.Parameters) { var paramValue = param.Value is string ? $"'{param.Value}'" : param.Value.ToString(); fullCommandText = fullCommandText.Replace(param.ParameterName, paramValue); } Console.WriteLine($"Executing non-query command: {fullCommandText}"); return base.NonQueryExecuting(command, eventData, result); } /// <summary> /// 在执行标量查询命令之前拦截并输出日志。 /// </summary> /// <param name="command">要执行的标量查询命令。</param> /// <param name="eventData">命令事件数据。</param> /// <param name="result">拦截结果。</param> /// <returns>拦截结果。</returns> public override InterceptionResult<object> ScalarExecuting(DbCommand command, CommandEventData eventData, InterceptionResult<object> result) { var fullCommandText = command.CommandText; foreach (DbParameter param in command.Parameters) { var paramValue = param.Value is string ? $"'{param.Value}'" : param.Value.ToString(); fullCommandText = fullCommandText.Replace(param.ParameterName, paramValue); } Console.WriteLine($"Executing scalar query: {fullCommandText}"); return base.ScalarExecuting(command, eventData, result); } }
运行结果如下:
