grails - 已经为此响应调用了Grails getWriter()

Question

每当我在template.gsp中调用<ut:profilePicture>时，都会发生此错误。这是我的customTagLib

import rms.User

class userTagLib {
    def springSecurityService
    static namespace = "ut"

   def fullName = {
        User currentUser = springSecurityService.currentUser as User
        if (currentUser) {
            out << currentUser.firstName + " " + currentUser.lastName
        }
    }

    def profilePicture ={
        User currentUser = springSecurityService.currentUser as User
        if (currentUser){
                response.outputStream << currentUser.picture
        }
    }
}

我需要发布gsp代码吗？

Answer 1

您正在混合HTML和图片。您不能只将二进制图像放在HTML内，HTML只能包含指向该图像的链接。

您可以为个人资料图片制作带 Action 的Controller，例如:

def picture() {
    User user = User.get(params.id)
    response.contentType = ... // image/jpeg i guess?
    response.outputStream << user.picture
    return null
}

并将链接放在标签内:

def profilePicture ={
    User currentUser = springSecurityService.currentUser as User
    if (currentUser){
        out << '<img src="'
        out << createLink(controller: 'user', action: 'profile', id: currentUser.id)
        out << '" alt="" />'
    }
}