c# - Blazor C# 发送电子邮件

Question

我的 Blazor 项目中有一个 razor 组件，当用户单击按钮时，它将触发电子邮件

OnClick 函数 Email 将通过以下代码发送电子邮件

async Task Email(string originalpiv, string docno, string cuscode, string cusname, string docdate)
{
   CModule.SendMail("example@gmail.com", "example@gmail.com", "", "HI", "HI BRO");

}

CModule.SendMail 是传递电子邮件 from,to,subj,body 的方法，代码如下

public static bool SendMail(string from, string to, string cc, string subject, string body)
        {
            bool rst = false;
            MailMessage Msg = new MailMessage();
            try
            {
                SmtpClient smtp = new SmtpClient("mail.gmail.com", 587);
                string[] toeml = to.Split(new Char[] { ';', ',' });
                foreach (string tmp in toeml)
                {
                    if (tmp.Trim() != "") Msg.To.Add(tmp.Trim());
                }
                string[] cceml = cc.Split(new Char[] { ';', ',' });
                foreach (string tmp in cceml)
                {
                    if (tmp.Trim() != "") Msg.CC.Add(tmp.Trim());
                }
                Msg.From = new MailAddress(from.Trim());
                Msg.Subject = subject;
                Msg.Body = body;
                Msg.BodyEncoding = System.Text.Encoding.GetEncoding("GB2312");
                smtp.Credentials = new System.Net.NetworkCredential("nick.chau@gmail.com", "880215");
                smtp.Send(Msg);
                rst = true;
            }
            catch (Exception ex)
            {

            }
            finally
            {
                Msg.Dispose();
            }
            return rst;
        }

这些是我尝试过的代码，但电子邮件没有发送出去，不知道为什么，有什么想法吗？

Answer 1

您是否将电子邮件类添加为服务以用作 startup.cs 中的依赖注入(inject)？

这对我有用:

1. 创建将通过 appsettings.json 配置的电子邮件设置

namespace ReservationBookingSystem.Model
{
    public class MailSettings
    {
        public string Username { get; set; }
        public string Password { get; set; }
        public int Port { get; set; }
        public string FromEmail { get; set; }
        public string Host { get; set; }
    }
}

1. 创建邮件界面

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using ReservationBookingSystem.Model;

namespace ReservationBookingSystem.Services
{
    public interface IMailService
    {
        Task SendEmailAsync(string ToEmail, string Subject, string HTMLBody);
    }
}

1. 创建邮件服务类

using ReservationBookingSystem.Model;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Net;
using System.Net.Mail;

namespace ReservationBookingSystem.Services
{
    public class MailService : IMailService
    {
        private readonly MailSettings _mailConfig;
        public MailService(MailSettings mailConfig)
        {
            _mailConfig = mailConfig;
        }

        public async Task SendEmailAsync(string ToEmail, string Subject, string HTMLBody)
        {
            MailMessage message = new MailMessage();
            SmtpClient smtp = new SmtpClient();
            message.From = new MailAddress(_mailConfig.FromEmail);
            message.To.Add(new MailAddress(ToEmail));
            message.Subject = Subject;
            message.IsBodyHtml = true;
            message.Body = HTMLBody;
            smtp.Port = _mailConfig.Port;
            smtp.Host = _mailConfig.Host;
            smtp.EnableSsl = true;
            smtp.UseDefaultCredentials = false;
            smtp.Credentials = new NetworkCredential(_mailConfig.Username, _mailConfig.Password);
            smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
            await smtp.SendMailAsync(message);
        }
    }
}

4. 在 Startup.cs 添加:

services.AddSingleton(Configuration.GetSection("MailSettings").Get<MailSettings>());
services.AddScoped<IMailService, MailService>();

5. 在 appsettings.json 中的“MailSettings”下添加邮件配置
6. 在你想使用的razor组件中，调用依赖注入(inject)即可。使用 @inject ReservationBookingSystem.Services.IMailService MailService。代码内部调用 await MailService.SendEmailAsync("to.email@mail.com", "test", "test");

这适用于 blazor 服务器。所以基本上对你来说，用 CModule 替换 MailSettings 就可以了