使用sendgrid

Question

＆＃34;上面发送电子邮件的代码是代码。我厌倦了挠头但仍然无法在邮件中看到图像。我正在将图像转换为base 64编码的字符串，并且还遵循sendgrid语法仍然无法发送图像.i dunno wats在这里出错了。：＆＃34;

var app = require("../../../server/server");
var base64Img = require("base64-img");

let status = null;
let textBody,
  htmBody = null;
var DataSource = require("loopback-datasource-juggler").DataSource;
var dsSendGrid = new DataSource("loopback-connector-sendgrid", {
  api_key: app.customConfig.mail.sendgrid.api_key
});

var fs = require("fs");

function base64_encode(file) {
  var bitmap = fs.readFileSync(file);
  return new Buffer(bitmap).toString("base64");
}

function base64_decode(base64str, file) {
  var bitmap = new Buffer(base64str, "base64");
  fs.writeFileSync(file, bitmap);
  console.log(
    "******** File created from base64 encoded string ********",
    base64str
  );
}

var base64str = base64_encode("../../../images/Campaign-images/Christmas.png");

let message = {
  to: "somebody@gmail.com",
  from: "noreply@gmail.com",
  subject: "test",
  text: "hi",
  html: '<img src="cid:myimagecid"/>',
  attachment: [
    {
      filename: "Christmas2.png",
      content: base64str,
      ContentId: "myimagecid"
    }
  ]
};
console.log(message);
app.models.Email.send(message)
  .then(result => {
    return "sent";
  })
  .catch(err => {
    console.log(err);

    return "failed";
  });

Answer 1

如果我查看https://sendgrid.com/docs/API_Reference/Web_API_v3/Mail/index.html

我看到它是附件 s 而非附件

还有content_id而不是ContentId

另外请确保您使用的是正确的版本（我指的是v3，但我认为您可以选择使用v2）

Answer 2

可能是因为您的邮件客户端不支持base 64编码图像，请参阅此question

Answer 3

此代码肯定会起作用

//imageData= "data:image/png;base64,ine793nfdsf......."

imageb64 = imageData.replace('data:image/png;base64,' , ''); 
//remove data:image/png;base64,            

const msg = {
            to: 'example@gmail.com',
            from: 'test@gmail.com',
            subject: "image attached",
            html :'<img src="cid:myimagecid"/>',
            attachments: [
              {
                filename: "imageattachment.png",
                content: imageb64,
                content_id: "myimagecid",
              }
            ]
          };

      sgMail.send(msg);