GrailsMailException: message has no content, use text(), html() or body() methods to set content

[wiggitamoo]

When running Grails in development my application is sending mail correctly. When I run grails war and deploy to Tomcat, then I get the following error:

GrailsMailException: message has no content, use text(), html() or body() methods to set content

This is how I'm using the sendMail command.

String body = groovyPageRenderer.render(template: "/dfdirHeartbeatAlert/restoreHeartbeatEmail", model: [user: user, message: heartbeatMessage])
        
println(body)

mailService.sendMail {
            multipart true
            bcc bccList.toArray()
            from "<email_address>"
            subject "Subject"
            html body        
}

When I print out body in development it looks correct. However printing body in production deployed on Tomcat comes back as an empty string.

Is this the intended syntax for sending html mail?

[davydotcom]

Using the groovyPageRenderer like this can be a bit tricky. The mail plugin provides a way to specify the template and the model directly

mailService.sendMail {
            multipart true
            bcc bccList.toArray()
            from "<email_address>"
            subject "Subject"
            html view: "/emails/hello", model: [param1: "value1", param2: "value2"]
}