0
我試圖保存圖片,並返回它的訪問的URL,但系統拋出約PARAMS異常:「無法設置只讀屬性:PARAMS」不能設置只讀屬性:PARAMS
def upload() {
def attachmentInstance = new Attachment(utype:params.type, udata:params.data)
if (!attachmentInstance.save(flush: true)) {
render(view: "create", model: [attachmentInstance: attachmentInstance])
return
}
def subMap = [url:"${createLink(controller:'attachment', action:'renderImg', params:'[id:${attachmentInstance.id}]')}", width:0, height:0]
def jsonMap = [id:attachmentInstance.id, type:"image", thumbnail:"", data:subMap]
def result = [result:jsonMap]
render result as JSON
}
我不認爲你可以嵌套你的GStrings,因爲你有'def subMap'行。 '$ {createLink ...'包含另一個'$ {}''。過去我遇到過這個問題,我想你必須將第二個'$ {}'存儲在變量中,然後引用變量(?)。 – nickdos 2012-08-09 04:03:06