Spring整合SpringMVC时避免Spring加载两次bean的配置方法

旧城等待， 2022-11-09 15:29 181阅读 0赞

### 避免Spring加载两次bean的配置方法 ###

*  写在前面的话
 *  解决办法

# 写在前面的话 #

**      当Spring整合SpringMVC时，SpringMVC的springmvc.xml配置文件和Spring的bean.xml配置文件在我们单独使用时，都是直接扫描整个包，但是整合到一起的时候，两个配置文件都同时扫描，就会加载两次bean，会造成很多奇怪的错误。**

**例如：【No qualifying bean of type ‘org.springframework.jdbc.core.JdbcTemplate’ available: expected at least 1 bean which qualifies as autowire candidate】**

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'productDaoImpl': Unsatisfied dependency expressed through field 'jdbcTemplate'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.springframework.jdbc.core.JdbcTemplate' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: { @org.springframework.beans.factory.annotation.Autowired(required=true)}
    		at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643)
    		at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130)

**      解决办法：springmvc.xml中只扫描controller，Spring的bean.xml中排除controller，其他的都扫描。**

# 解决办法 #

**springmvc.xml：**

<context:component-scan base-package="com.keafmd.controller" use-default-filters="false">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

**bean.xml：**

<context:component-scan base-package="com.keafmd">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

> **以上就是Spring整合SpringMVC时避免Spring加载两次bean的配置方法的全部内容。**

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如果你是电脑端的话，看到右下角的 “一键三连” 了吗，没错点它\[哈哈\]**  
![在这里插入图片描述][20210115230629703.gif_pic_center]

**加油！**

**共同努力！**

**Keafmd**

[20210115230629703.gif_pic_center]: /images/20221023/168b0b515c344fc98cf099ba0b1efcd3.png