dstew32424 2018-04-03 08:14
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如何以Sendgrid API接受的格式将html嵌入json中？

I have been trying to send an HTML email using the Sendgrid API, but I have been unsuccessful in embedding the html inside the json request.

This is an example of the html I am trying to send (emailtpl):

<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body></body></html>

Things I have tried:

  1. html.EscapeString(emailtpl)
  2. strconv.Quote(emailtpl)
  3. using backticks ` inside the json template
  4. wrapping value with single quotes for the value in the json template.
  5. base64.StdEncoding.EncodeToString([]byte(emailtpl)) only display the base64 gibberish.

Items #1 and #5 are the only solutions that Sendgrid has accepted, but the html sent is not correct (as shown in the screenshot).

escape-butchered

Items #2 - #4 all result in Status 400 Bad Request.

Does anyone know how to embed html into Sendgrid API request that Sendgrid accepts AND it renders correctly?

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  • doushi1960 2018-04-06 15:59
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    Looking at the Sendgrid api docs, it looks like it should accept html. You will need to have the html properly escaped in the json string (and set the content->type = "text/html").

    In your example template, the only problem I see are the double quotes in your meta tag. As a quick test to make sure everything is working, I would attempt to send the following html string:

    <html><head></head><body>Hi!</body></html>

    If that html string is successful, then you need to work on escaping your original html string example. The only invalid characters I see are the double quotes, which need to be escaped in json with backslashes. I'm not sure if go has a specific function for this, but it looks like this should work:

    // import "strings"

strings.Replace(emailtpl, `"`, `\"`, -1)
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