grails 问题(Grails To Action 书的示例 1)控制器和服务的问题
我正在为第一章做 Grails To Action 示例。在我开始使用服务之前,一切都很好。当我运行应用程序时,出现以下错误:
groovy.lang.MissingPropertyException: No such property: quoteService for class: qotd.QuoteController
at qotd.QuoteController$_closure3.doCall(QuoteController.groovy:14)
at qotd.QuoteController$_closure3.doCall(QuoteController.groovy)
at java.lang.Thread.run(Thread.java:619)
这是我的 groovie QuoteService 类,它在 GetStaticQuote 的定义中存在错误(错误:Groovy:无法解析类 Quote)
package qotd
class QuoteService {
boolean transactional = false
def getRandomQuote() {
def allQuotes = Quote.list()
def randomQuote = null
if (allQuotes.size() > 0) {
def randomIdx = new Random().nextInt(allQuotes.size())
randomQuote = allQuotes[randomIdx]
} else {
randomQuote = getStaticQuote()
}
return randomQuote
}
def getStaticQuote() {
return new Quote(author: "Anonymous",content: "Real Programmers Don't eat quiche")
}
}
Eclipse 在定义上显示错误标志getStaticQuote 的:
ERROR: Groovy:unable to resolve class Quote
有任何线索吗?
控制器 groovie 类
package qotd
class QuoteController {
def index = {
redirect(action: random)
}
def home = {
render "<h1>Real Programmers do not each quiche!</h1>"
}
def random = {
def randomQuote = quoteService.getRandomQuote()
[ quote : randomQuote ]
}
def ajaxRandom = {
def randomQuote = quoteService.getRandomQuote()
render "<q>${randomQuote.content}</q>" +
"<p>${randomQuote.author}</p>"
}
}
Quote 类:
package qotd
class Quote {
String content
String author
Date created = new Date()
static constraints = {
author(blank:false)
content(maxSize:1000, blank:false)
}
}
我正在使用 STS 进行示例。有什么建议吗?
问候,
弗朗西斯科
I'm doing Grails To Action sample for chapter one. Every was just fine until I started to work with Services. When I run the app I have the following error:
groovy.lang.MissingPropertyException: No such property: quoteService for class: qotd.QuoteController
at qotd.QuoteController$_closure3.doCall(QuoteController.groovy:14)
at qotd.QuoteController$_closure3.doCall(QuoteController.groovy)
at java.lang.Thread.run(Thread.java:619)
Here is my groovie QuoteService class, which has an error within the definition of GetStaticQuote (ERROR: Groovy:unable to resolve class Quote)
package qotd
class QuoteService {
boolean transactional = false
def getRandomQuote() {
def allQuotes = Quote.list()
def randomQuote = null
if (allQuotes.size() > 0) {
def randomIdx = new Random().nextInt(allQuotes.size())
randomQuote = allQuotes[randomIdx]
} else {
randomQuote = getStaticQuote()
}
return randomQuote
}
def getStaticQuote() {
return new Quote(author: "Anonymous",content: "Real Programmers Don't eat quiche")
}
}
Eclipse show me an error flag on the definition of getStaticQuote:
ERROR: Groovy:unable to resolve class Quote
Any Clues?
Controller groovie class
package qotd
class QuoteController {
def index = {
redirect(action: random)
}
def home = {
render "<h1>Real Programmers do not each quiche!</h1>"
}
def random = {
def randomQuote = quoteService.getRandomQuote()
[ quote : randomQuote ]
}
def ajaxRandom = {
def randomQuote = quoteService.getRandomQuote()
render "<q>${randomQuote.content}</q>" +
"<p>${randomQuote.author}</p>"
}
}
Quote Class:
package qotd
class Quote {
String content
String author
Date created = new Date()
static constraints = {
author(blank:false)
content(maxSize:1000, blank:false)
}
}
I'm doing the samples using STS. Any advice?
Regards,
Francisco
如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱,如果其他用户或者作者回复了您的评论,将不能在第一时间通知您!
发布评论
评论(3)
执行
def quoteService
,它将自动注入到控制器中在控制器顶部
do
def quoteService
at the top of your controller and it will be injected into the controller automatically
我不在 grails 中编码,但似乎您需要在控制器中的某个位置声明 quoteService。
I dont code in grails but it appears as though you need to declare quoteService somewhere in the controller.
我做到了
它解决了我的问题
I did
and it solved my problem