Spring mvc注解 controller中注入 service BeanCreationException

J2EE 码拜 6年前 (2015-07-11) 670次浏览 0个评论

最近在学基于注解的spring mvc,也是跟着孔浩的视频学得,用的三层结构 controller service 还有DAO,但是运行后发现service没有注入,导致项目的功能运行不正常,调了半天还是没有结果,想请各位大神给解决一下,万分感谢。
代码如下:
Controller

package com.zrb.controller;

import java.util.HashMap;
import java.util.Map;


import com.zrb.entiy.TBrand;
import com.zrb.ucts.service.TBrandService;

@Controller
@RequestMapping("/brand")
public class BrandController {

	private Map<String,TBrand> tBrands = new HashMap<String, TBrand>();
	@Value("#{configProperties[""url""]}")
	private String dbUrl;
	public BrandController() {
		tBrands.put("3", new TBrand(3,"马自达"));
		tBrands.put("4", new TBrand(4,"雪佛兰"));
	}
	@Resource(name="brandservice")
	private TBrandService brandService;

Service 接口

package com.zrb.ucts.service;

import java.util.List;

import org.springframework.stereotype.Service;

import com.zrb.ucts.db.entity.TBrand;
@Service("brandservice")
public interface  TBrandService {

	 // 通过Id查询UserInfo
    TBrand getById(Integer id);

    // 查询全部的UserInfo
    List<TBrand> findAll();

    // 添加UserInfo
    Integer save(TBrand tBrand);

}

Service 实现代码

package com.zrb.ucts.service.impl;

import java.util.List;

import javax.annotation.Resource;

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

import com.zrb.ucts.db.dao.TBrandDao;
import com.zrb.ucts.db.entity.TBrand;
import com.zrb.ucts.service.TBrandService;
@Service("brandservice")
public class TBrandServiceImpl implements TBrandService {

    @Resource(name="branddao")
    private TBrandDao tBrandDao;
  @Override
    public TBrand getById(Integer id) {
        return tBrandDao.getById(id);
    }
  @Override
    public List<TBrand> findAll() {
        return tBrandDao.findAll();
    }
  @Override
    public Integer save(TBrand tBrand) {
        return tBrandDao.save(tBrand);
    }


}  

基类DAO

package com.zrb.ucts.db.dao;

import com.zrb.ucts.db.entity.TBrand;

public interface TBrandDao extends GenericDao<TBrand, Integer>{


}

接口DAO

package com.zrb.ucts.db.dao;

import java.io.Serializable;
import java.util.List;


	interface GenericDao<T, PK extends Serializable> {

	    T getById(PK id);

	    List<T> findAll();

	    PK save(T entity);
}

实现DAO

package com.zrb.ucts.db.dao.impl;

import java.util.List;


import com.zrb.ucts.db.dao.TBrandDao;
import com.zrb.ucts.db.entity.TBrand;
@Repository("branddao")
public class TBrandDaoImpl implements TBrandDao {

	@Autowired
	private JdbcTemplate jdbcTemplate;

	@Autowired
    private NamedParameterJdbcTemplate namedParameterJdbcTemplate;




	@Override
	public TBrand getById(Integer id) {
		String sql = "SELECT * FROM t_brand WHERE brand_id =  ";

        TBrand tBrand = jdbcTemplate.queryForObject(sql, new TBrand(),
                new Object[] { id });

        return tBrand;
	}
	@Override
	public List<TBrand> findAll() {
		String sql = "SELECT * FROM t_brand";
        List<TBrand> tBrands = jdbcTemplate.query(sql, new TBrand());
        return tBrands;
	}
	@Override
	public Integer save(TBrand entity) {

		String sql = "INSERT INTO t_brand(brand_id, brand_name) VALUES(:brandid, :brandname)";
        MapSqlParameterSource paramSource = new MapSqlParameterSource();
        paramSource.addValue("brandid", entity.getBrandId());
        paramSource.addValue("brandname", entity.getBrandName());
        int result = namedParameterJdbcTemplate.update(sql, paramSource);

        return result;
	}

}

web.xml如下:

< xml version="1.0" encoding="UTF-8" >
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	id="WebApp_ID" version="2.5">


	<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>
		<init-param>
			<param-name>forceEncoding</param-name>
			<param-value>true</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>encodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

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

	<servlet-mapping>
		<servlet-name>front</servlet-name>
		<url-pattern>/front/*</url-pattern>
	</servlet-mapping>

	 <!-- -->
	<context-param>
	<param-name>contextConfigLocation</param-name>
	<param-value>classpath*:/applicationContext.xml</param-value>
	</context-param>

	<listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>



</web-app>

Spring mvc配置

< xml version="1.0" encoding="UTF-8" >
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">
	<mvc:annotation-driven>
	</mvc:annotation-driven>
	<context:component-scan base-package="com.zrb.controller"></context:component-scan>
	<bean name="/welcome.html" class="com.zrb.controller.WelcomeController"></bean>
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="viewClass"
			value="org.springframework.web.servlet.view.JstlView" />
		<property name="prefix" value="/WEB-INF/jsp/"></property>
		<property name="suffix" value=".jsp"></property>

	</bean>

</beans>

Spring applicationContext.xml配置如下:

< xml version="1.0" encoding="UTF-8" >
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">
<bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor "/>
<bean class="org.springframework.beans.factory.annotation.RequiredAnnotationBeanPostProcessor"/>
<!--引入配置属性文件 -->
	<context:property-placeholder location="classpath*:config/applicationConfig.properties" />
	<context:property-placeholder location="classpath*:config/log4j.properties" />

	<!--扫描org.andy.work下文件,自动注入dao,entity,service为bean -->
	<context:component-scan base-package="com.zrb.ucts.db.dao.impl,com.zrb.ucts.service.impl" />

	<!-- c3p0数据源配置 -->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
		destroy-method="close">
		<property name="driverClass" value="${jdbc.driver}" />
		<property name="jdbcUrl" value="${jdbc.url}" />
		<property name="user" value="${jdbc.username}" />
		<property name="password" value="${jdbc.password}" />

		<!-- 请求超时时间 -->
		<property name="checkoutTimeout" value="30000" />
		<!-- 每60秒检查所有连接池中的空闲连接。默认值: 0,不检查 -->
		<property name="idleConnectionTestPeriod" value="30" />
		<!-- 连接数据库连接池最大空闲时间 -->
		<property name="maxIdleTime" value="30" />
		<!-- 连接池初始化连接数 -->
		<property name="initialPoolSize" value="5" />
		<property name="minPoolSize" value="5" />
		<property name="maxPoolSize" value="20" />
		<!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。默认值: 3 -->
		<property name="acquireIncrement" value="5" />
	</bean>

	<!-- spring jdbc -->
	<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
		<property name="dataSource" ref="dataSource" />
	</bean>

	<bean id="namedParameterJdbcTemplate"
		class="org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate">
		<constructor-arg ref="dataSource" />
	</bean>

	<!-- 配置事务管理 -->
	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource" />
	</bean>

	<!-- 声明式事务,事务拦截器 -->
	<bean id="transactionInterceptor"
		class="org.springframework.transaction.interceptor.TransactionInterceptor">
		<property name="transactionManager" ref="transactionManager" />
		<!-- 配置事务属性 -->
		<property name="transactionAttributes">
			<!--下面定义事务传播属性 -->
			<props>
			    <prop key="save*">PROPAGATION_REQUIRED</prop>
			    <prop key="del*">PROPAGATION_REQUIRED</prop>
			    <prop key="update">PROPAGATION_REQUIRED</prop>

				<prop key="get*">PROPAGATION_SUPPORTS,readOnly</prop>
				<prop key="find*">PROPAGATION_SUPPORTS,readOnly</prop>
				<prop key="*">PROPAGATION_REQUIRED</prop>
			</props>
		</property>
	</bean>
	</beans>

访问后无法注入的异常信息如下:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name ""brandController"": Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named ""brandservice"" is defined

10分

用 @Autowired,又用 @Resource 来注入,好乱,最好只用一种。

10分

你的service标志接口和实现类用了同一个Id?好像只要在实现类标志service就行了吧,接口不用

50分

<!–扫描org.andy.work下文件,自动注入dao,entity,service为bean –>
<context:component-scan base-package=”com.zrb.ucts.db.dao.impl,com.zrb.ucts.service.impl” />

这里没有扫描到brandController

30分

我去检查了下spring mvc配置,需要扫描到controller的

<context:component-scan base-package="com.sishuok.es.**.web.controller" use-default-filters="false">
        <context:include-filter type="annotation"
                                expression="org.springframework.stereotype.Controller"/>
        <context:include-filter type="annotation"
                                expression="org.springframework.web.bind.annotation.ControllerAdvice"/>
    </context:component-scan>
 
service接口不用扫描进容器,两个ID也不能相同
 
嗯,问题已经解决了,应该是在servcie注入的时候,注解方式的问题,还有就是扫描路径没有配置成功,非常感谢各位的回答,谢谢.

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