Mingyang.net：org.springframework.context.annotation.ConflictingBeanDefinitionException

org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'configController' for bean class [net.mingyang.modules.system.ConfigController] conflicts with existing, non-compatible bean definition of same name and class [net.mingyang.cms.controller.ConfigController]
    org.springframework.context.annotation.ClassPathBeanDefinitionScanner.checkCandidate(ClassPathBeanDefinitionScanner.java:314)
    org.springframework.context.annotation.ClassPathBeanDefinitionScanner.doScan(ClassPathBeanDefinitionScanner.java:253)
    org.springframework.context.annotation.ComponentScanBeanDefinitionParser.parse(ComponentScanBeanDefinitionParser.java:85)
    org.springframework.beans.factory.xml.NamespaceHandlerSupport.parse(NamespaceHandlerSupport.java:74)
    org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1424)
    org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1414)
    org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:187)
    org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.doRegisterBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:141)
    org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:110)
    org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:508)
    org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:391)
    org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:335)
    org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:303)
    ... ...

問題的根源是我在兩個不同的package里面定義兩個ConfigController。默認的，Spring以類名作為Bean名，兩個不同包里面的ConfigController就變成了相同的名字。

package net.mingyang.modules.system;

@Controller
@RequestMapping("/control/system/config")
public class ConfigController
{
    ......
}

//-----------------------------------------------------

package net.mingyang.cms.controller;

@Controller
@RequestMapping("/control/cms/config")
public class ConfigController
{
    ......
}

解決方法是為兩個@Controller指定名字：

package net.mingyang.modules.system;

@Controller("/control/system/config")
@RequestMapping("/control/system/config")
public class ConfigController
{
    ......
}

//-----------------------------------------------------

package net.mingyang.cms.controller;

@Controller("/control/cms/config")
@RequestMapping("/control/cms/config")
public class ConfigController
{
    ......
}