Java Servlet dispatcher的调试HTTP状态500-Servlet.init（）引发异常

我正在尝试创建自己的网上商店。我有一些问题。我认为问题出在xml文件上，所以我不会发布我的类、控制器等。如果你要求我发布，我会发布

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:context="http://www.springframework.org/schema/context"
    xmlns:tx="http://www.springframework.org/schema/tx"
    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/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd">

    <beans profile="dev">

        <context:annotation-config></context:annotation-config>
        <context:component-scan base-package="com.emusicstore.dao, com.emusicstore.impl"></context:component-scan> 


        <context:property-placeholder location="jdbc.properties" />

        <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
            destroy-method="close">

            <property name="driverClassName" value="${jdbc.driver}"></property>
            <property name="url" value="${jdbc.url}"></property>
            <property name="password" value="${jdbc.password}"></property>
            <property name="username" value="${jdbc.username}"></property>
        </bean>

        <!-- MY CHANGES -->
        <!-- LocalSessionFactoryBean for hibernate4 -->

        <bean id="sessionFactory"
            class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">

            <property name="dataSource" ref="dataSource"></property>
            <property name="hibernateProperties">
                <props>
                    <!-- CHANGE HERE FOR MySQL -->
                    <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
                    <prop key="hibernate.hbm2ddl.auto">update</prop>
                    <prop key="hibernate.show_sql">true</prop>
                    <prop key="hibernate.format_sql">true</prop>
                </props>
            </property>
            <!-- To know where is ProductDao -->
            <property name="packagesToScan">
                <list>
                    <value>com.emusicstore.dao</value>
                    <value>com.emusicstore.impl</value>
                </list>
            </property>
        </bean>

        <bean id="transactionManager"
            class="org.springframework.orm.hibernate4.HibernateTransactionManager">
            <property name="sessionFactory" ref="sessionFactory"></property>
        </bean>
        <tx:annotation-driven transaction-manager="transactionManager" />
    </beans>
</beans>

<?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" xmlns:tx="http://www.springframework.org/schema/tx"
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.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd">


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

<context:annotation-config></context:annotation-config>

<mvc:annotation-driven />

<bean id="viewResolver"
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/views/" />
    <property name="suffix" value=".jsp" />
</bean>

<mvc:resources mapping="/resources/**" location="/WEB-INF/resources/" />

<tx:annotation-driven />

package com.emusicstore.impl;

import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;

import com.emusicstore.dao.ProductDao;
import com.emusicstore.model.Product;

@Component
@Transactional
public class ProductDaoImpl implements ProductDao {

@Autowired
private SessionFactory sessionFactory;

public void addProduct(Product product) {
    Session session = sessionFactory.getCurrentSession();
    session.saveOrUpdate(product);
    session.flush();
}

public Product getProductById(String id) {
    Session session = sessionFactory.getCurrentSession();
    Product product = (Product) session.get(Product.class, id);
    session.flush();

    return product;
}

public List<Product> getAllProducts() {
    Session session = sessionFactory.getCurrentSession();
    Query query = session.createQuery("from Product");
    List<Product> products = query.list();
    session.flush();

    return products;
}

public void deleteProduct(String id) {
    Session session = sessionFactory.getCurrentSession();
    session.delete(getProductById(id));
    session.flush();
}

}

那么以下所有错误都是：

org.springframework.beans.factory.BeanCreationException
org.springframework.beans.factory.NoSuchBeanCreationDefinitionException

我感谢任何帮助。 先谢谢你，迈克

编辑

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'homeController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private dao.ProductDao controllers.HomeController.productDao; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [dao.ProductDao] 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)}

ProductDao

package com.emusicstore.dao;
import java.util.List;
import com.emusicstore.model.Product;
public interface ProductDao 
{
    void addProduct(Product product);
    Product getProductById (String id);
    List<Product> getAllProducts();
    void deleteProduct (String id);
}

package com.emusicstore.dao；
导入java.util.List；
导入com.emusicstore.model.Product；
公共接口产品DAO
{
无效产品（产品）；
产品getProductById（字符串id）；
列出getAllProducts（）；
无效删除产品（字符串id）；
}

ProductDaoImpl

<?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:tx="http://www.springframework.org/schema/tx"
    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/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd">

    <beans profile="dev">

        <context:annotation-config></context:annotation-config>
        <context:component-scan base-package="com.emusicstore.dao, com.emusicstore.impl"></context:component-scan> 


        <context:property-placeholder location="jdbc.properties" />

        <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
            destroy-method="close">

            <property name="driverClassName" value="${jdbc.driver}"></property>
            <property name="url" value="${jdbc.url}"></property>
            <property name="password" value="${jdbc.password}"></property>
            <property name="username" value="${jdbc.username}"></property>
        </bean>

        <!-- MY CHANGES -->
        <!-- LocalSessionFactoryBean for hibernate4 -->

        <bean id="sessionFactory"
            class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">

            <property name="dataSource" ref="dataSource"></property>
            <property name="hibernateProperties">
                <props>
                    <!-- CHANGE HERE FOR MySQL -->
                    <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
                    <prop key="hibernate.hbm2ddl.auto">update</prop>
                    <prop key="hibernate.show_sql">true</prop>
                    <prop key="hibernate.format_sql">true</prop>
                </props>
            </property>
            <!-- To know where is ProductDao -->
            <property name="packagesToScan">
                <list>
                    <value>com.emusicstore.dao</value>
                    <value>com.emusicstore.impl</value>
                </list>
            </property>
        </bean>

        <bean id="transactionManager"
            class="org.springframework.orm.hibernate4.HibernateTransactionManager">
            <property name="sessionFactory" ref="sessionFactory"></property>
        </bean>
        <tx:annotation-driven transaction-manager="transactionManager" />
    </beans>
</beans>

<?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" xmlns:tx="http://www.springframework.org/schema/tx"
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.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd">


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

<context:annotation-config></context:annotation-config>

<mvc:annotation-driven />

<bean id="viewResolver"
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/views/" />
    <property name="suffix" value=".jsp" />
</bean>

<mvc:resources mapping="/resources/**" location="/WEB-INF/resources/" />

<tx:annotation-driven />

package com.emusicstore.impl;

import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;

import com.emusicstore.dao.ProductDao;
import com.emusicstore.model.Product;

@Component
@Transactional
public class ProductDaoImpl implements ProductDao {

@Autowired
private SessionFactory sessionFactory;

public void addProduct(Product product) {
    Session session = sessionFactory.getCurrentSession();
    session.saveOrUpdate(product);
    session.flush();
}

public Product getProductById(String id) {
    Session session = sessionFactory.getCurrentSession();
    Product product = (Product) session.get(Product.class, id);
    session.flush();

    return product;
}

public List<Product> getAllProducts() {
    Session session = sessionFactory.getCurrentSession();
    Query query = session.createQuery("from Product");
    List<Product> products = query.list();
    session.flush();

    return products;
}

public void deleteProduct(String id) {
    Session session = sessionFactory.getCurrentSession();
    session.delete(getProductById(id));
    session.flush();
}

}

package com.emusicstore.impl；
导入java.util.List；
导入org.hibernate.Query；
导入org.hibernate.Session；
导入org.hibernate.SessionFactory；
导入org.springframework.beans.factory.annotation.Autowired；
导入org.springframework.stereotype.Component；
导入org.springframework.transaction.annotation.Transactional；
导入com.emusicstore.dao.ProductDao；
导入com.emusicstore.model.Product；
@组成部分
@交易的
公共类ProductDaoImpl实现ProductDao{
@自动连线
私人会话工厂会话工厂；
公共产品（产品）{
Session Session=sessionFactory.getCurrentSession（）；
会话.保存或更新（产品）；
session.flush（）；
}
公共产品getProductById（字符串id）{
Session Session=sessionFactory.getCurrentSession（）；
Product=（Product）session.get（Product.class，id）；
session.flush（）；
退货产品；
}
公共列表getAllProducts（）{
Session Session=sessionFactory.getCurrentSession（）；
Query=session.createQuery（“来自产品”）；
List products=query.List（）；
session.flush（）；
退货产品；
}
公共产品（字符串id）{
Session Session=sessionFactory.getCurrentSession（）；
删除（getProductById（id））；
session.flush（）；
}
}

您可以使用下面的

@Qualifier

注释，告诉Spring使用您的ProductDaoImpl bean

@Autowire
@Qualifier("productDaoImpl") 
ProductDao productDao;

---

你能发布完整的错误日志吗？我刚刚更新了我的帖子。ProductDao呢？我在ProductDao上定义了我的方法。在ProduDaoImpl实现产品时，我为所有方法编写代码，并使用@Autowired SessionFactory。错误为-无法为productDao创建bean，您可以发布该类吗？不幸的是，出现了相同的错误：（我将检查pom.xml，看看是否使用了正确的依赖项。