springmvc 注解失败 No qualifying bean of type

胡小素 2014-11-25 03:52:23

这是代码Controller

@Controller

public class WeatherAction {

    @Autowired

    private WeatherService weatherService;

    @RequestMapping("/find")

    public @ResponseBody String find(String test){

        WeatherDO weatherDO = weatherService.findWeather(test);

        return weatherDO.getCityname();

    }

}

service

public interface WeatherService {

     public WeatherDO findWeather(String test);

}

service实现

@Service

public class WeatherServiceImpl implements WeatherService {

    @Autowired

    private WeatherDao weatherDao;

    public WeatherDO findWeather(String test) {

        if (Utils.isHowManyNumbers(6, test)) {

            return weatherDao.findByPostcode(test);

        }

        if (Utils.isHowManyNumbers(9, test)) {

            return weatherDao.findByCitycode(test);

        }

        return weatherDao.findByCityname(test);

    }

}

DAO

public interface WeatherDao {

    public WeatherDO findByCityname(String cityname);

    public WeatherDO findByCitycode(String citycode);

    public WeatherDO findByPostcode(String postcode);

   }

接下来就是配置文件web.xml

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://java.sun.com/xml/ns/javaee"

  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee

                      http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"

  version="3.0">

  <display-name></display-name>	

	<!-- 中文编码 -->

	<filter>

		<filter-name>encodingFilter</filter-name>

		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

		<init-param>

			<param-name>encoding</param-name>

			<param-value>UTF-8 </param-value>

		</init-param>

	</filter>

	<filter-mapping>

		<filter-name>encodingFilter</filter-name>

		<url-pattern>/* </url-pattern>

	</filter-mapping>

  	

    <listener>

    	<listener-class>

    		org.springframework.web.context.ContextLoaderListener

    	</listener-class>

    </listener>

    <context-param>

    	<param-name>contextConfigLocation</param-name>

    	<param-value>classpath*:spring-*.xml</param-value>  

    </context-param>

    

	<servlet>

		<servlet-name>spring-dispatcher</servlet-name>

		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

		<init-param>

			<param-name>contextConfigLocation</param-name>

			<param-value>classpath:spring/spring-dispatcher.xml</param-value>

		</init-param>

		<load-on-startup>1</load-on-startup>

	</servlet>

	<servlet-mapping>

		<servlet-name>spring-dispatcher</servlet-name>

		<url-pattern>/*</url-pattern>

	</servlet-mapping>

	<!--页面路径 -->

	<filter>

		<filter-name>path-filter</filter-name>

		<filter-class>com.lljqiu.test.PathFilter</filter-class>

	</filter>

	<filter-mapping>

		<filter-name>path-filter</filter-name>

		<url-pattern>/*</url-pattern>

	</filter-mapping>

</web-app>

spring-datasource.xml

<beans xmlns="http://www.springframework.org/schema/beans"

	xmlns:context="http://www.springframework.org/schema/context"

	xmlns:mvc="http://www.springframework.org/schema/mvc"

	xmlns:aop="http://www.springframework.org/schema/aop"

	xmlns:tx="http://www.springframework.org/schema/tx"

	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

	xsi:schemaLocation="http://www.springframework.org/schema/beans 

		http://www.springframework.org/schema/beans/spring-beans-4.0.xsd

		http://www.springframework.org/schema/aop 

		http://www.springframework.org/schema/aop/spring-aop-4.0.xsd

		http://www.springframework.org/schema/context

		http://www.springframework.org/schema/context/spring-context-4.0.xsd

		http://www.springframework.org/schema/mvc 

		http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd

		http://www.springframework.org/schema/tx 

		http://www.springframework.org/schema/tx/spring-tx-4.0.xsd"

		>

    <context:component-scan base-package="com.lljqiu" />

	<bean

		class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

		<property name="locations"  value="classpath:config/datasource.properties" />

	</bean>

	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">   

    	<property name="driverClassName"><value>${database.driver}</value></property>   

  		<property name="url"><value>${database.url}</value></property>   

    	<property name="username"><value>${database.username}</value></property>  

        <property name="password"><value>${database.password}</value></property>  

        <property name="maxActive"><value>${database.maxActive}</value></property>  

        <property name="initialSize"><value>${database.initialSize}</value></property>  

        <property name="maxWait"><value>${database.maxWait}</value></property>  

        <property name="maxIdle"><value>${database.maxIdle}</value></property>  

        <property name="minIdle"><value>${database.minIdle}</value></property>  

        <property name="removeAbandoned"><value>${database.removeAbandoned}</value></property>  

        <property name="removeAbandonedTimeout"><value>${database.removeAbandonedTimeout}</value></property>  

        <property name="connectionProperties"><value>${database.connectionProperties}</value></property>

	</bean>

	<!-- 事务 -->

	<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

		<property name="dataSource" ref="dataSource" />

	</bean>

	

	<!-- MyBatis -->

	<bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

		<property name="dataSource" ref="dataSource" />

		<property name="mapperLocations" value="classpath:mybatis/*.xml" />

	</bean>

	<bean id="weatherDao" class="org.mybatis.spring.mapper.MapperFactoryBean">

	    <property name="sqlSessionFactory" ref="sessionFactory" />

		<property name="mapperInterface" value="com.lljqiu.test.dao.WeatherDao" />

	</bean>

</beans>

spring-dispatcher.xml

<?xml version="1.0" encoding="GBK"?>

<beans xmlns="http://www.springframework.org/schema/beans"

	xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"

	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"

	xsi:schemaLocation="http://www.springframework.org/schema/beans

		http://www.springframework.org/schema/beans/spring-beans-4.0.xsd

		http://www.springframework.org/schema/context

		http://www.springframework.org/schema/context/spring-context-4.0.xsd

		http://www.springframework.org/schema/mvc

		http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd

		http://www.springframework.org/schema/aop 

        http://www.springframework.org/schema/aop/spring-aop-4.0.xsd">

	<!-- 开启aspectJ支持, 强制使用cglib实现动态代理 -->

	<aop:aspectj-autoproxy proxy-target-class="true" />

	<context:component-scan base-package="com.lljqiu" />

	<bean

		class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

		<property name="locations">

			<list>

				<value>classpath:config/ftl.properties</value>

			</list>

		</property>

	</bean>

	<!-- Freemarker Configuration -->

	<bean id="freemarkerConfig"

		class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">

		<property name="configLocation" value="classpath:config/ftl.properties" />

		<property name="templateLoaderPath" value="/WEB-INF/views" />

		<property name="defaultEncoding" value="UTF-8" />

		<property name="freemarkerSettings">

			<props>

				<prop key="template_update_delay">10</prop>

				<prop key="locale">zh_CN</prop>

			</props>

		</property>

	</bean>

	<bean id="ftlViewResolver"

		class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">

		<property name="contentType" value="text/html;charset=UTF-8" />

		<!-- <property name="prefix" value="/WEB-INF/views" /> -->

		<property name="suffix" value=".ftl" />

	</bean>

	<bean

		class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">

		<property name="messageConverters">

			<list>

				<bean

					class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />

			</list>

		</property>

	</bean>

</beans>

[b]spring-service.xml[b]

<?xml version="1.0" encoding="GBK"?>

<beans xmlns="http://www.springframework.org/schema/beans"

	xmlns:context="http://www.springframework.org/schema/context"

	xmlns:mvc="http://www.springframework.org/schema/mvc" 

	xmlns:aop="http://www.springframework.org/schema/aop"

	xmlns:tx="http://www.springframework.org/schema/tx" 

	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

	xmlns:util="http://www.springframework.org/schema/util"

	xsi:schemaLocation="http://www.springframework.org/schema/beans 

		http://www.springframework.org/schema/beans/spring-beans-4.0.xsd

		http://www.springframework.org/schema/aop 

		http://www.springframework.org/schema/aop/spring-aop-4.0.xsd

		http://www.springframework.org/schema/context

		http://www.springframework.org/schema/context/spring-context-4.0.xsd

		http://www.springframework.org/schema/mvc 

		http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd

		http://www.springframework.org/schema/tx 

		http://www.springframework.org/schema/tx/spring-tx-4.0.xsd

		http://www.springframework.org/schema/util

		http://www.springframework.org/schema/util/spring-util-4.0.xsd">

	<context:component-scan base-package="com.lljqiu" />

	<import resource="classpath*:spring/spring-*.xml" />

	<bean

		class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

		<property name="location" value="classpath:config/ftl.properties" />

	</bean>

</beans>

...全文

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何俊清 2018-11-24

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今天我使用spring+mybatis框架练习是也也到类似的问题。我理解的是注解不成功应该是xml中的context:component-scan 配置不对。比如包名之间应该是.号，而使用了/号。但我的错误完全是因为COPY XML文件配置后没有及时按照项目布局修改context:component-scan。比如使用@Service注解的代码如下：
package service.imp;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

import mapper.Personmapper;
import pojo.Person;
import service.PersonService;

@Service("personService")
public class PersonServiceImp implements PersonService {
@Autowired
private Personmapper personMapper;

public Person getPersonByID(int id) {
// TODO Auto-generated method stub
Person person = new Person();
try {
person = personMapper.selectPersonById(id);

}catch(Exception e)
{
e.printStackTrace();
}
return person;
}

}

PersonService接口是在包service下，此时我把xml的中的
<context:component-scan base-package="fhsj.com"></context:component-scan>
修改成
<context:component-scan base-package="service"></context:component-scan>
<context:component-scan base-package="service.imp"></context:component-scan>
，此时问题解决。同时在把配置更改成
<context:component-scan base-package="service"></context:component-scan>
也能解决问题。说明@Service注解在使用spring自动的扫描功能时，仅仅扫描接口所在的包即可。

黑胖黑胖的 2017-07-31

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竟然不是很懂

suixin804180426 2017-07-24

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注入失败更常见的原因是在spring-servlet.xml中没有添加扫描目录，导致项目启动时没扫描相应的包，无法创建实例。解决办法是在spring-servlet.xml中添加要扫描的包来源：http://blog.csdn.net/u011853294/article/details/51113212 本人配置错误：<mongo:repositories base-package="com.suixin.iznaer.repository" /> 应该为：<mongo:repositories base-package="com.suixin.repository" /> 也就是配置路径错了。

qq_32891697 2017-06-30

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应该是扫描 mapper 的包配置错误导致的问题

qq_28469029 2017-06-16

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老子还等到解决问题，结果楼主跑去食屎去咯

qq_38148000 2017-03-31

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请问楼主是怎么解决的

Java码农老王 2016-07-19

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到底如何解决？

qq4990 2016-07-08

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我来说解决方法！去通用MAPPER 项目看做大的重要提示特别强调：不是表中字段的属性必须加@Transient注解

xss13 2016-06-13

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我也遇到这个问题了，SpringMVC和SpringIOC是两个容器，IOC是老大，MVC是老二，配置注解驱动扫描的时候，把Controller层配给MVC，其他层，比如业务层和持久层配给IOC就解决这个问题了。。。也就是说，扫描控制层的交给xx-servlet.xml，扫描业务层和持久层的交给applicationContext.xml。

zdcsoul 2016-05-16

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nai598455803 2016-04-25

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config 建文件夹，别建包

ailaopo415 2015-08-13

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今天也遇到了这个问题，impl在注入的时候，注入的是class类，而不是interface，从而引起错误。可以参考http://www.iteye.com/topic/1131444

胡小素 2015-02-02

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spring-service.xml 可以看一下这个配置文件，修改过后的配置文件

<?xml version="1.0" encoding="GBK"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:util="http://www.springframework.org/schema/util"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
		http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
		http://www.springframework.org/schema/aop 
		http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
		http://www.springframework.org/schema/context
		http://www.springframework.org/schema/context/spring-context-4.0.xsd
		http://www.springframework.org/schema/mvc 
		http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
		http://www.springframework.org/schema/tx 
		http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
		http://www.springframework.org/schema/util
		http://www.springframework.org/schema/util/spring-util-4.0.xsd">

	<context:component-scan base-package="com.lljqiu" />
	
	
</beans>

eagle199012 2015-01-19

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差评都不说怎么解决的

初露寒秋 2015-01-19

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配置哪里出现了问题，出现了什么问题，具体说一下

胡小素 2014-11-29

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问题已经解决，配置出现了错误，

qzw1210 2014-11-25

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注解的问题,和我的结构很相似


@Repository     //看看这里
public interface WeatherDao {
    public WeatherDO findByCityname(String cityname);
    public WeatherDO findByCitycode(String citycode);
    public WeatherDO findByPostcode(String postcode);
   }

雪翊寒 2014-11-25

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胡小素 2014-11-25

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引用 7 楼 u011424700 的回复:

不是很明白，感觉你是注解和配制混合着用的吧，但是混着用也没有发现你在xml中配制WeatherServiceImpl和WeatherDao的bean……但是错误很明显，WeatherDao没有注入到类WeatherServiceImpl 1.如果全用注解的话，你可以在WeatherServiceImpl中weatherDao上边再使用@Qualifer注解，把类WeatherDao注入到类WeatherServiceImpl中 2.如果想用在xml中配置bean的方式，建议你再检查一下了……有没有配置bean WeatherServiceImpl ,而且bean WeatherServiceImpl 中有没有配置bean WeatherDao...... 另外，多说一句，你的WeatherAction类好像也有同样的问题

哥们，你说的那种方式(全注解)我试过了，好像专门和我做对使得，还是不对，

qiang_yiqiyihui 2014-11-25

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不是很明白，感觉你是注解和配制混合着用的吧，但是混着用也没有发现你在xml中配制WeatherServiceImpl和WeatherDao的bean……但是错误很明显，WeatherDao没有注入到类WeatherServiceImpl 1.如果全用注解的话，你可以在WeatherServiceImpl中weatherDao上边再使用@Qualifer注解，把类WeatherDao注入到类WeatherServiceImpl中 2.如果想用在xml中配置bean的方式，建议你再检查一下了……有没有配置bean WeatherServiceImpl ,而且bean WeatherServiceImpl 中有没有配置bean WeatherDao...... 另外，多说一句，你的WeatherAction类好像也有同样的问题