由:XmlBeanDefinitionStoreException:XML 文档中的第 3 行 [/WEB-INF/sp

Question

我有一个 spring 应用程序，它不需要用户注册，并允许用户在 spring mvc 中使用 CRUD 输入数据。当我启动应用程序时，我收到此错误作为堆栈

Caused by: org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 3 in XML document from ServletContext resource [/WEB-INF/spring/data.xml] is invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 3; columnNumber: 110; cvc-elt.1: Cannot find the declaration of element 'beans'.

这是错误引发的堆栈跟踪的第二行

Caused by: org.xml.sax.SAXParseException; lineNumber: 3; columnNumber: 110; cvc-elt.1: Cannot find the declaration of element 'beans'.
    atm.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)

这是在错误所在的我的 Web-INF 文件夹中定义的类

<?xml  version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:p="http://www.springframework.org/schema/p" xmlns:tx="http://www.springframework.org/schema/tx">
    <!-- Настраивает управление транзакциями с помощью аннотации @Transactional -->
    <tx:annotation-driven transaction-manager="transactionManager" />
    <!-- Менеджер транзакций -->
    <bean id="transactionManager"
        class="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory" />
    </bean>

    <bean id="messageSource"
        class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
        <property name="basename" value="classpath:messages" />
        <property name="defaultEncoding" value="UTF-8" />
    </bean>
    <!-- Настройки бина dataSource будем хранить в отдельном файле -->
    <bean id="propertyConfigurer"
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
        p:location="/WEB-INF/jdbc.properties" />
    <!-- Непосредственно бин dataSource -->
    <bean id="dataSource"
        class="org.springframework.jdbc.datasource.DriverManagerDataSource"
        p:driverClassName="${jdbc.driverClassName}" 
        p:url="${jdbc.databaseurl}"
        p:username="${jdbc.username}" 
        p:password="${jdbc.password}" />

    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="configLocation" value="classpath:hibernate.cfg.xml"/>
        <property name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration"/>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.dialect">${jdbc.dialect}</prop>
                <prop key="hibernate.connection.charSet">UTF-8</prop>
                <prop key="hibernate.hbm2ddl.auto">update</prop>
            </props>
        </property>
    </bean>
</beans>

假设一切正常，请问为什么我在启动应用程序时收到上述错误。请协助。

Answer 1

你错过了xml XSD，如下所示

 xsi:schemaLocation="  
       http://www.springframework.org/schema/beans      
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd
"  

Answer 2

在文档中使用它们之前，您需要声明所有 XML 命名空间，包括xsi命名空间。

以下是您的用例的完整 bean 声明：

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