Spring MVC + Hibernate + Maven：bean声明中的多个注释

Question

我正在使用eclipse juno基于maven和hibernate在Spring MVC中开发一个Web应用程序。 当我尝试在servlet-context.xml中配置hibernate时显示错误如下：

cvc-elt.1：找不到元素＆＃39; bean的声明

servlet-context.xml如下所示：

<?xml version="1.0" encoding="UTF-8"?>
   <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.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 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/views/" />
    <property name="suffix" value=".jsp" />
</bean>

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


<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">  
  <property name="driverClassName" value="${database.driver}" />  
  <property name="url" value="${database.url}" />  
  <property name="username" value="${database.user}" />  
  <property name="password" value="${database.password}" />  
</bean>  

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

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

    <property name="hibernateProperties">  
        <props>  
            <prop key="hibernate.dialect">MySQL5Dialect</prop>  
            <prop key="hibernate.hbm2ddl.auto">update</prop>  
            <prop key="hibernate.show_sql">true</prop>  

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

<bean id="template" class="org.springframework.orm.hibernate3.HibernateTemplate">  
    <property name="sessionFactory" ref="mysessionFactory"></property>  
</bean>  

<bean id="d" class="com.javatpoint.EmployeeDao">  
    <property name="template" ref="template"></property>  
</bean>
</beans>

文件结构如下：

请尽快回答。

Answer 1

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

问题是你指定spring-mvc.xsd作为根命名空间，你可以使用没有前缀的命名空间。因此<annotation-driven />对应<mvc:annotation-driven />。但是，<bean>中的spring-mvc.xsd标记与spring-beans.xsd中的标记不同。

要使其正常工作，您需要为<bean />，<property />等添加前缀beans:，因为这是您为spring-beans.xsd指定的前缀。或者将根命名空间切换为spring-beans.xsd，并将<annotation-driven />前缀为mvc。

beans:前缀

的示例

<?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.xsd">


<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>

具有不同根命名空间的示例

<?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:mvc="http://www.springframework.org/schema/mvc"
        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.xsd">

    <mvc:annotation-driven />

    <mvc:resources mapping="/resources/**" location="/resources/" />

Answer 2

对于第一个bean定义，您已经给出了** beans：** bean前缀，如下所示。

<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>

但是对于所有bean定义的其余部分，你错过了提供前缀＆＃34; beans＆＃34;。 我认为这可能是问题，因为解析器无法识别此标记。请尝试为所有标签添加前缀并尝试。