Spring + Hibernate + Maven：j無法為連接URL“ jdbc：mysql // localhost：3306 / test”創建類“ com.mysql.jdbc.Driver”的JDBC驅動程序

Question

我在以下位置有我的mysql-connector jar：

1.）Tomcat服務器庫

2.）將路徑構建為外部JAR。 *從Maven依賴項中刪除，盡管仍然存在相同的錯誤。

jdbc.properties

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.dialect=org.hibernate.dialect.MySQLDialect
jdbc.databaseurl=jdbc:mysql//localhost:3306/test
jdbc.username=root
jdbc.password=****

web.xml加上片段：

<resource-ref>
    <description>DB Connection</description>
    <res-ref-name>jdbc/test</res-ref-name>
    <res-type>javax.sql.DataSource</res-type>
    <res-auth>Container</res-auth>
</resource-ref>

還有我完整的servlet-context.xml

<context:annotation-config />
<context:component-scan base-package="org.springsecudev.controller" />
<context:component-scan base-package="org.springsecudev.model" />
<context:component-scan base-package="org.springsecudev.service" />
<context:component-scan base-package="org.springsecudev.dao" />

<beans:bean id="propertyConfigurer"
    class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
    p:location="/WEB-INF/jdbc.properties">
</beans:bean>

<beans:bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource"
    destroy-method="close" p:driverClassName="${jdbc.driverClassName}"
    p:url="${jdbc.databaseurl}" p:username="${jdbc.username}" p:password="${jdbc.password}">
</beans:bean>

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

<!-- 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>

<beans:bean id="transactionManager" 
    class="org.springframework.orm.hibernate3.HibernateTransactionManager">
    <beans:property name="sessionFactory" ref="sessionFactory"></beans:property>
</beans:bean>

<interceptors>
    <beans:bean id="webContentInterceptor" 
        class="org.springframework.web.servlet.mvc.WebContentInterceptor">
        <beans:property name="cacheSeconds" value="0"/>
        <beans:property name="useExpiresHeader" value="true"/>
        <beans:property name="useCacheControlHeader" value="true"/>
        <beans:property name="useCacheControlNoStore" value="true"/>
    </beans:bean>
</interceptors>

<beans:bean id="encoder"  
class="org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder">
    <beans:constructor-arg value="12"></beans:constructor-arg>
</beans:bean>

我還在META-INF中添加了context.xml ，以確保我也嘗試過使用

<Context>
<WatchedResource>WEB-INF/web.xml</WatchedResource>
<Resource  name="jdbc/test" 
        username="root" 
        password="root" 
        driverClassName="com.mysql.jdbc.Driver"
        url="jdbc:mysql://localhost:3306/test"
        auth="Container" 
        type="javax.sql.DataSource"
        maxActive="100" 
        maxIdle="30" 
        maxWait="10000"
        initialSize="1"/>

但是仍然沒有運氣，它也有相同的錯誤：

INFO：org.springframework.beans.factory.support.DefaultListableBeanFactory-在org.springframework.beans.factors.support.DefaultListableBeanFactory@39c45c72中預先實例化單例：定義bean [org.springframework.context.annotation.internalConfigurationAnnotationProcessor，org.springframework。 context.annotation.internalAutowiredAnnotationProcessor，org.springframework.context.annotation.internalRequiredAnnotationProcessor，org.springframework.context.annotation.internalCommonAnnotationProcessor，org.springframework.context.annotation.internalPersistenceAnnotationProcessor，屬性配置器，數據源，會話resource.ResourceHttpRequestHandler＃0，org.springframework.web.servlet.handler.SimpleUrlHandlerMapping＃0，org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping，org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter，org.springframework.web。 servlet.mvc.SimpleControllerHandlerAdapter，org.springframework.web.servlet.view。 InternalResourceViewResolver＃0，transactionManager，org.springframework.web.servlet.handler.MappedInterceptor＃0，encoder，org.springframework.context.annotation.ConfigurationClassPostProcessor $ ImportAwareBeanPostProcessor＃0]; 父級：org.springframework.beans.factory.support.DefaultListableBeanFactory@31e0a986警告：org.hibernate.util.JDBCExceptionReporter-SQL錯誤：0，SQLState：空錯誤：org.hibernate.util.JDBCExceptionReporter-無法創建類'的JDBC驅動程序連接URL'jdbc：mysql // localhost：3306 / test'的com.mysql.jdbc.Driver'警告：org.hibernate.cfg.SettingsFactory-無法獲取連接元數據java.sql.SQLException：無法創建類的JDBC驅動程序在org.apache.commons.dbcp2.BasicDataSource.createConnectionFactory（BasicDataSource.java:2160）上用於連接URL'jdbc：mysql // localhost：3306 / test'的'com.mysql.jdbc.Driver'....... [縮短] 原因：java.sql.SQLException： org.apache.commons.dbcp2.BasicDataSource.createConnectionFactory（BasicDataSource.java:2151） 沒有合適的驅動程序 ... 40等等

我一直試圖找出可能的問題，其中我已將jar復制到構建路徑和服務器庫中。

Answer 1

似乎您在文件jdbc.properties缺少數據庫URL的冒號。

jdbc:mysql//localhost:3306/test

我認為應該

jdbc:mysql://localhost:3306/test