收到错误“org.springframework.beans.factory.BeanCreationException：创建名为'homeController'的bean时出错”

时间：2013-12-06 07:35:10

标签： java spring-mvc

我在spring工具套件中创建了spring mvc项目，并使用了具有以下细节的hibernate：

HomeController.java
package com.FruitStore.fruit;
import java.util.Locale;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import com.Fruit.Service.ServiceUser;
import com.FruitStore.Vo.VoUser;

/**
 * Handles requests for the application home page.
 */
@Controller
public class HomeController {

    private static final Logger logger = LoggerFactory.getLogger(HomeController.class);
    @Autowired
    ServiceUser serviceUser;

    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String home(Locale locale, Model model) {
        logger.info("Welcome home! The client locale is {}.", locale);
        return "body";
    }
    @RequestMapping(value = "/signup", method = RequestMethod.GET)
    public String signup(Model model) {

        VoUser voUser=new VoUser();
        model.addAttribute("user", voUser);
        return "signup";
    }

    @RequestMapping(value = "/save", method = RequestMethod.POST)
    public String save(@ModelAttribute("user")VoUser voUser) {
        System.out.println(serviceUser);
        serviceUser.save(voUser);
        return "new";
    }
}

servlet的context.xml中

   <?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:beans="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
        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-3.1.xsd">

    <!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->

    <!-- Enables the Spring MVC @Controller programming model -->
    <annotation-driven />

    <!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
    <resources mapping="/resources/**" location="/resources/" />

    <!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
    <beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <beans:property name="prefix" value="/WEB-INF/views/" />
        <beans:property name="suffix" value=".jsp" />
    </beans:bean>

    <context:component-scan base-package="com.FruitStore" />
    <context:annotation-config />


</beans:beans>

的applicationContext.xml 

    <?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:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">


    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName"  value="com.mysql.jdbc.Driver"></property>
        <property name="url" value="jdbc:mysql://localhost:3306/TEST"></property>
        <property name="username" value="root"></property>
        <property name="password" value=""></property>
    </bean>

    <bean id="mysessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="dataSource"><ref bean="dataSource" /></property>

        <property name="mappingResources">
        <list>
        <value>user.hbm.xml</value>
        </list>
        </property>

        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
                <prop key="hibernate.hbm2ddl.auto">create</prop>
                <prop key="hibernate.show_sql">true</prop>

            </props>
        </property>
    </bean>

    <bean id="d" class="com.FruitStore.hibernate.DaoUserImpl">
    <property name="sessionFactory" ref="mysessionFactory"></property>
    </bean> 


    </beans>

ServiceUser.java 

package com.Fruit.Service;
import com.FruitStore.Vo.VoUser;
import com.FruitStore.hibernate.User;
/**
 * 
 * @author kaif
 *
 */
public interface ServiceUser {

    void save(User user);
    void update(User user);
    void delete(User user);
    void save(VoUser user);


}

ServiceUserImpl.java 

package com.Fruit.Service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.FruitStore.Vo.VoUser;
import com.FruitStore.hibernate.DaoUser;
import com.FruitStore.hibernate.User;


@Service
public class ServiceUserImpl implements ServiceUser{

    @Autowired
    private DaoUser daoUser;

    @Override
    public void save(User user) {
        daoUser.save(user);
    }

    @Override
    public void update(User user) {
        daoUser.update(user);
    }

    @Override
    public void delete(User user) {
        daoUser.delete(user);
    }

    @Override
    public void save(VoUser user) {
        daoUser.save(user);

    }

}

DaoUser.java 

package com.FruitStore.hibernate;
import com.FruitStore.Vo.VoUser;

public interface DaoUser {
    void save(User user);
    void update(User user);
    void delete(User user);
    void save(VoUser user);

}

DaoUserImpl.java 

package com.FruitStore.hibernate;
import org.hibernate.SessionFactory;
import org.springframework.orm.hibernate3.HibernateTemplate;
import org.springframework.stereotype.Repository;

import com.FruitStore.Vo.VoUser;

@Repository("DaoUser")
public class DaoUserImpl implements DaoUser {

    HibernateTemplate template;
    public void setSessionFactory(SessionFactory session)
    {
        template=new HibernateTemplate(session);
    }
    @Override
    public void save(User user) {
            template.save(user);
    }

    @Override
    public void update(User user) {
        template.update(user);      
    }

    @Override
    public void delete(User user) {
        template.delete(user);      
    }

    @Override
    public void save(VoUser vouser)
    {
       User user=new User();
       user.setUsername(vouser.getUsername());
       user.setEmail(vouser.getAddress());
       user.setPassword(vouser.getPassword());
       user.setAddress(vouser.getAddress()+vouser.getCountry());
       this.save(user);

    }
}

的pom.xml 

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.FruitStore</groupId>
    <artifactId>fruit</artifactId>
    <name>FruitStore</name>
    <packaging>war</packaging>
    <version>1.0.0-BUILD-SNAPSHOT</version>
    <properties>
        <java-version>1.6</java-version>
        <org.springframework-version>3.1.1.RELEASE</org.springframework-version>
        <org.aspectj-version>1.6.10</org.aspectj-version>
        <org.slf4j-version>1.6.6</org.slf4j-version>
    </properties>
    <dependencies>
        <!-- Spring -->
        <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>3.2.5.RELEASE</version>
</dependency>            
        <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>3.2.5.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-beans</artifactId>
    <version>3.2.5.RELEASE</version>
</dependency>

        <!-- AspectJ -->
        <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>3.2.5.RELEASE</version>
</dependency>


        <!-- Logging -->
        <dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-jdk14</artifactId>
    <version>1.7.5</version>
</dependency>

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-orm</artifactId>
    <version>3.2.5.RELEASE</version>
</dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>jcl-over-slf4j</artifactId>
            <version>${org.slf4j-version}</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.7.5</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.9</version>
       </dependency>
       <!-- Hibernate framework -->
    <dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>4.2.7.Final</version>
</dependency>



    <dependency>
        <groupId>dom4j</groupId>
        <artifactId>dom4j</artifactId>
        <version>1.6.1</version>
    </dependency>
    <dependency>
        <groupId>commons-collections</groupId>
        <artifactId>commons-collections</artifactId>
        <version>3.2.1</version>
    </dependency>

    <dependency>
        <groupId>antlr</groupId>
        <artifactId>antlr</artifactId>
        <version>2.7.7</version>
    </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.15</version>
            <exclusions>
                <exclusion>
                    <groupId>javax.mail</groupId>
                    <artifactId>mail</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>javax.jms</groupId>
                    <artifactId>jms</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.sun.jdmk</groupId>
                    <artifactId>jmxtools</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.sun.jmx</groupId>
                    <artifactId>jmxri</artifactId>
                </exclusion>
            </exclusions>
            <scope>runtime</scope>
        </dependency>

        <!-- @Inject -->
        <dependency>
            <groupId>javax.inject</groupId>
            <artifactId>javax.inject</artifactId>
            <version>1</version>
        </dependency>

        <!-- Servlet -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.1</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <!-- Test -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.7</version>
            <scope>test</scope>
        </dependency>        
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <artifactId>maven-eclipse-plugin</artifactId>
                <version>2.9</version>
                <configuration>
                    <additionalProjectnatures>
                        <projectnature>org.springframework.ide.eclipse.core.springnature</projectnature>
                    </additionalProjectnatures>
                    <additionalBuildcommands>
                        <buildcommand>org.springframework.ide.eclipse.core.springbuilder</buildcommand>
                    </additionalBuildcommands>
                    <downloadSources>true</downloadSources>
                    <downloadJavadocs>true</downloadJavadocs>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.5.1</version>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                    <compilerArgument>-Xlint:all</compilerArgument>
                    <showWarnings>true</showWarnings>
                    <showDeprecation>true</showDeprecation>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>1.2.1</version>
                <configuration>
                    <mainClass>org.test.int1.Main</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

的web.xml 

    <?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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_2_5.xsd">

    <!-- The definition of the Root Spring Container shared by all Servlets and Filters -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/spring/root-context.xml</param-value>
    </context-param>

    <!-- Creates the Spring Container shared by all Servlets and Filters -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!-- Processes application requests -->
    <servlet>
        <servlet-name>appServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>appServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

</web-app>

但是当我尝试运行项目时，我收到错误“org.springframework.beans.factory.BeanCreationException：创建名为'homeController'的bean时出错”但是如果我不在HomeController中使用@Autowired注释。 java然后我得到daoUser值为Null。你能帮我搞清楚吗？

2 个答案:

答案 0 :(得分：1)

删除整个.m2（maven目录）并重新安装所有依赖项

答案 1 :(得分：0)

在root-context.xml / applicationContext.xml中，您需要<context:component-scan />来扫描除控制器之外的所有内容。您有一个，但不包括您已定义服务的包。

添加以下

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

这也允许您删除DaoUserImpl bean的定义，因为现在可以通过组件扫描来获取它。您需要在@Autowired方法中添加setSessionFactory才能实现这一目标。

将servlet-context.xml中的一个更改为以下

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

同时删除<context:annotation-config />已隐含的<context:component-scan />。

关于DaoUserImpl的最后一点请注意，请不要使用在{hibernate 3.0.1发布时（2006年左右）被认为已弃用的HibernateTemplate。直接使用SessionFactory并使用getCurrentSession()方法。有关详细信息，另请参阅http://docs.spring.io/spring/docs/current/spring-framework-reference/html/orm.html#orm-hibernate-straight。

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