java - NoClassDefinitionFoundError 发现javax/transaction/TransactionManager

Question

大家好，我在尝试将 spring 3.0 与 hibernate 3.1 集成时遇到问题，为什么我会收到此类错误。在“HibernateDAO”类中，我只是对“HibernateTemplate”使用了“ Autowiring ”技术及其抛出错误......我附上“applicationcontext”和“web.xml”

 applicationContext:@

    <?xml version="1.0" encoding="UTF-8"?>
       <beans 
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
   xmlns:context="http://www.springframework.org/schema/context"
   xmlns:aop="http://www.springframework.org/schema/aop"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation=
   "http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
   http://www.springframework.org/schema/context
   http://www.springframework.org/schema/context/spring-context-3.0.xsd
    http://www.springframework.org/schema/mvc
     http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
     http://www.springframework.org/schema/aop
     http://www.springframework.org/schema/aop/spring-aop-3.0.xsd" > 

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

   <mvc:annotation-driven/>
   <context:component-scan base-package="com.spring" />

      <bean              class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="viewClass"      value="org.springframework.web.servlet.view.InternalResourceView"/>
    <property name="prefix"  value="/" />
    <property name="suffix" value=".jsp" />
    </bean>


   <bean id="bs" class="com.spring.BookServiceImpl"  />

    <bean id="hbdao" class="com.spring.HibernateBookDAO"  />

    <bean id="htemp" class="org.springframework.orm.hibernate3.HibernateTemplate"  autowire="constructor" />

    <!--<bean id="txManger"     class="org.springframework.orm.hibernate3.TransactionManager" autowire="byName" />-->

    <!--<bean id="transactionManager" class="org.springframework.orm.hibernate.Hibernate TransactionManager">
   <property name="sessionFactory">
    <ref bean="sessionFactory"/>
   </property>
  </bean>
     -->

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

    <property name="hibernateProperties">
    <map>
    <entry key="hibernate.dialect"    value="org.hibernate.dialect.MySQLDialect" />
    <entry key="hibernate.show_sql" value="true" />
    <entry key="hibernate.hbm2ddl.auto" value="update" />
    </map>
    </property>

    <property name="mappingResources">
    <list>
    <value>com/spring/book.hbm.xml</value>
    </list>
    </property>

    </bean>


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

    </beans>

web.xml:@

  <?xml version="1.0" encoding="UTF-8"?>
 <web-app version="3.0" 
    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_3_0.xsd">
 <display-name></display-name>  
 <welcome-file-list>
 <welcome-file>index.jsp</welcome-file>
 </welcome-file-list>

 <servlet>
 <servlet-name>applicationContext</servlet-name>
 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-  class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
     </servlet>

   <servlet-mapping>
   <servlet-name>applicationContext</servlet-name>
       <url-pattern>*.do</url-pattern>
       </servlet-mapping>

      </web-app>

Answer 1

在您的情况下，您的 applicationContext Dispatcher servlet 具有 *.do 扩展名。

<servlet-mapping>
   <servlet-name>applicationContext</servlet-name>
       <url-pattern>*.do</url-pattern>
</servlet-mapping>

像这样更改你的 Controller ..你的RequestMapping应该有.do扩展名。请求来自带有 .do 扩展名的 web.xml，请求应与您的 Controller @RequestMapping 注释匹配。所以像这样添加，

@Controller
@RequestMapping("/")
public class AppController {

@RequestMapping(value="/home.do" method=RequestMethod.GET)
    public String SampleMethod(Model model){