Grails多个数据源：org.springframework.beans.factory.NoUniqueBeanDefinitionException [英] Grails Multiple data source: org.springframework.beans.factory.NoUniqueBeanDefinitionException

问题描述

我最近发布了一个关于多个数据源的问题。事情进展顺利，直到我遇到这个问题：

控制器

  def doSomething（）{
 
 def user = userService.getCurrentUser（）
} 
  

Service

  class UserService {
 def getCurrentUser（）{
 def principal = springSecurityService .principal 
字符串username = principal.username 
返回find（用户名）
} 
 def find（String user）{
 return User.find {username == user } 
} 
} 
  

以前一直在单个DataSource上工作，但现在在这两种情况下，我都会在浏览器中看到这一点：

错误500：内部服务器错误URI / xxx / xxx类
org。 springframework.beans.factory.NoUniqueBeanDefinitionException
消息没有类型
的合格bean [org.springframework.transaction.PlatformTransactionManager]是
def ined：期望单个匹配bean，但找到3：
transactionManager，transactionManager_countrycity，$ primaryTransactionManager

解决方案

好的，现在已经解决了。

我认为我发现了这个问题：如果你有这个导入，在grails 3下有多个数据源：

导入org.springframework.transaction.annotation.Transactional

您会遇到以上问题：

如果您曾经拥有过：

import grails.transaction.Transactional

事情将按预期工作。我没有注意到并让ide选择错误的声明

I recently posted a question about multiple data sources. Things were going well until I hit this issue:

Controller

 def doSomething() {

    def user=userService.getCurrentUser()
   }

Service

    class UserService {
     def getCurrentUser() {
        def principal = springSecurityService.principal
        String username = principal.username
        return find(username)
     }
     def find(String user) {
        return User.find{username==user}
     }
   }

This had been working previously on single DataSource but now with both enabled I see this on the browser:

Error 500: Internal Server Error URI /xxx/xxx Class org.springframework.beans.factory.NoUniqueBeanDefinitionException Message No qualifying bean of type [org.springframework.transaction.PlatformTransactionManager] is defined: expected single matching bean but found 3: transactionManager,transactionManager_countrycity,$primaryTransactionManager

解决方案

Okay this is now resolved.

I think I found the issue: under grails 3 with multiple data sources if you have this import :

import org.springframework.transaction.annotation.Transactional

You will run into the above problems:

If you how ever have :

import grails.transaction.Transactional

things will work as expected. I hadn;t paid attention and let ide choose wrong declaration

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