标签：dep 思路 err 配置错误 cte dubbo poj work ack
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private cn.itcast.crm.service.BaseDictService cn.itcast.crm.controller.CustomerController.baseDictService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [cn.itcast.crm.service.BaseDictService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} 严重: StandardWrapper.Throwable org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘customerController‘: Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private cn.itcast.crm.service.BaseDictService cn.itcast.crm.controller.CustomerController.baseDictService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [cn.itcast.crm.service.BaseDictService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
解决问题的思路：
1.如果您使用注释进行配置，则可能会缺少cn.itcast.crm.service.BaseDictService实现的注释（@Service或@Component等）。
2.如果您使用（仅）xml，您可能会错过BaseDictService实现的<bean>定义。
3.如果您使用注释并且实现注释正确，请检查扫描实现所在的包
（检查各自组件的自动扫描组件<context：component-scan base-package = “XXXX”）
或者（Spring自动扫描<context:annotation-config/>）
4.代码有无错误：例子如下,
BaseDictMapper在mapper文件下并在相关的mapper.xml进行相关配置，BaseDictService在service文件下并做了相关的spring配置文件做了对应的配置。Service实现具有相同申明方法的mapper接口（而spring并不能扫描到mapper文件夹下的接口和类），因此BeanFactory在Spring Context中没有找到bean的实例，最终导致Spring无法识别相应的bean
public interface BaseDictMapper { //根据类别代码查询数据 List<BaseDict> queryBaseDictByDictTypeCode(String dictTypeCode); }
public interface BaseDictService { //根据类别代码查询 List<BaseDict> queryBaseDictByDictTypeCode(String dictTypeCode); }
public class BaseDictServiceImpl implements BaseDictMapper { //错误：应该实现为BaseDictService @Autowired private BaseDictMapper baseDictMapper; @Override public List<BaseDict> queryBaseDictByDictTypeCode(String dictTypeCode) { List<BaseDict> list = this.baseDictMapper.queryBaseDictByDictTypeCode(dictTypeCode); return list; } }
5.是否确实与注入相关便签的依赖。比如dubbo服务下，添加了spring的相关依赖但是服务端并不需要Spring的@Service标签，而是dubbo的@Service标签。检查maven依赖是否正确，修改完毕记得Install，report下
简单代码：
pom.xml
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jms</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
</dependency>
<!-- dubbo相关 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
</dependency>
<dependency>
<groupId>com.github.sgroschupf</groupId>
<artifactId>zkclient</artifactId>
</dependency>
...
</dependencies>
service:
import com.alibaba.dubbo.config.annotation.Service; import com.chunxiansheng.mapper.TbBrandMapper; import com.chunxiansheng.pojo.TbBrand; import com.chunxiansheng.service.BrandService; import org.springframework.beans.factory.annotation.Autowired; import java.util.List; @Service public class BrandServiceImpl implements BrandService { @Autowired private TbBrandMapper brandMapper; ... }
6.检查数据源，JDBC等有没有配置错误。
例如具体查看mapper，dao下的spring配置文件和db.properties的配置。
7.推荐使用SpringBoot，可以减少很多配置的操作，适合开发。
出现org.springframework.beans.factory.NoSuchBeanDefinitionException 的解决思路
标签：dep 思路 err 配置错误 cte dubbo poj work ack
原文地址：https://www.cnblogs.com/qingmuchuanqi48/p/11933163.html
