error in xml files in spring mvc - spring

Question

I have three xml files for the spring project as follows
application-context.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:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/jdbc http://www.springframework.org/schema
/jdbc/spring-jdbc-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema
/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema
/util/spring-util-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/context http://www.springframework.org/schema
/context/spring-context-3.0.xsd">
<context:annotation-config/>
<bean id="basicDataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/indi" />
<property name="username" value="root" />
<property name="password" value="" />
</bean>
</beans>
CController-servlet.xml(It is manager level 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:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema
/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema
/tx/spring-tx-2.5.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema
/util/spring-util-2.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema
/context/spring-context-2.5.xsd">
<context:annotation-config/>
<context:component-scan base-package="project4"/>
<bean
class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/>
<bean id="urlMapping"
class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="index.htm">indexController</prop>
</props>
</property>
</bean>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/"
p:suffix=".jsp" />
<bean name="frm4" class="project4.CController" >
<property name="userDAO" ref="myUserDAO" />
</bean>
<bean name="indexController"
class="org.springframework.web.servlet.mvc.ParameterizableViewController"
p:viewName="index" />
</beans>
and UUController-servlet.xml(this is a dao level 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:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema
/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema
/tx/spring-tx-2.5.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema
/util/spring-util-2.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema
/context/spring-context-2.5.xsd">
<bean id="mySessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="myDataSource" />
<property name="packagesToScan" value="project4"/>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">create</prop>
</props>
</property>
</bean>
<bean id="myUserDAO" class="project4.UserDAOImpl1">
<property name="sessionFactory" ref="mySessionFactory"/>
</bean>
</beans>
i have two xml files one for manager call and another for dao call...i know ref link from one xml points to the bean in another xml.I thought they will automatically link but i am getting the following error
Error creating bean with name
'org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping#0'
defined in ServletContext resource [/WEB-INF/CController-servlet.xml]: Initialization
of bean failed; nested exception is
org.springframework.beans.factory.BeanCreationException: Error creating bean with name
'frm4' defined in ServletContext resource [/WEB-INF/CController-servlet.xml]: Cannot
resolve reference to bean 'myUserDAO' while setting bean property 'userDAO'; nested
exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No
bean named 'myUserDAO' is defined
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating
bean with name 'frm4' defined in ServletContext resource [/WEB-INF/CController-
servlet.xml]: Cannot resolve reference to bean 'myUserDAO' while setting bean property
'userDAO'; nested exception is
org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named
'myUserDAO' is defined
UserDAOImpl1 is my hibernate template class and CCController is my spring controller class
CCController.java
package project4;
import project4.UserDAO1;
import project4.User1;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.validation.BindingResult;
#Controller
#RequestMapping("frm4.do")
public class CController{
private UserDAO1 userDAO;
public void setUserDAO(UserDAO1 userDAO) {
this.userDAO = userDAO;
}
#RequestMapping(params = "/add", method = RequestMethod.POST)
public ModelAndView add( #ModelAttribute("add") User1 user,HttpServletRequest
request,HttpServletResponse response) throws Exception {
userDAO.saveUser(user);
System.out.println("hai");
return new ModelAndView("redirect:list.htm");
}
#RequestMapping(params = "delete", method = RequestMethod.POST)
#Transactional
public ModelAndView delete(#ModelAttribute("delete") User1 user,HttpServletRequest
request,HttpServletResponse response) throws Exception {
userDAO.deleteUser(user);
return new ModelAndView("redirect:list.htm");
}
#RequestMapping(params = "find", method = RequestMethod.POST)
#Transactional
public ModelAndView find(#ModelAttribute("find") User1 user,HttpServletRequest
request,HttpServletResponse response) throws Exception {
userDAO.findUser(user);
return new ModelAndView("redirect:list.htm");
}
#RequestMapping(params = "update", method = RequestMethod.POST)
#Transactional
public ModelAndView update(#ModelAttribute("update") User1 user,HttpServletRequest
request,HttpServletResponse response) throws Exception {
userDAO.updateUser(user);
return new ModelAndView("redirect:list.htm");
}
public ModelAndView list(HttpServletRequest request,
HttpServletResponse response) throws Exception {
ModelMap modelMap = new ModelMap();
modelMap.addAttribute("userList", userDAO.listUser());
modelMap.addAttribute("user", new User1());
return new ModelAndView("userForm", modelMap);
}
}
can someone help plz
EDIT:
the web.xml is as follows
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value> /WEB-INF/application-context.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-
class>
</listener>
<servlet>
<servlet-name>CController</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>CController</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

Answer 1

frm4 bean has a property which has reference to userDAO, which is declared in other xml file. So make sure all the xml files are loaded in application context. To do this you need to add all the xml files in web.xml.
Try this :
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/UUController-servlet.xml,
/WEB-INF/application-context.xml,
/WEB-INF/CController-servlet.xml
</param-value>
</context-param>
EDIT :
If this is not working for you. Try adding other files in application-context.xml file. Use bean import tag.
<beans:import resource="/WEB-INF/UUController-servlet.xml"/>
<beans:import resource="/WEB-INF/CController-servlet.xml"/>
And load only application-context file at startup.
EDIT :
The reason behind the error 'Cannot map handler' is that you are scanning components at application startup and also having the same bean declared in application context.
<context:component-scan base-package="project4"/>
&
<bean name="frm4" class="project4.CController" >
<property name="userDAO" ref="myUserDAO" />
</bean>
Remove bean declaration from xml file since you already have scanned that particular component. And autowire myUserDAO bean in you controller class.
#Autowire
#Qualifier("myUserDAO")
private UserDAOImpl1 myUserDAO;

Answer 2

The problem is the UUController-servlet file is not loaded by the application context. Since it is a db level context add this to contextConfigLocation as shown below. Also I would recommend renaming it to dao-context.xml
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/application-context.xml
/WEB-INF/UUController-servlet.xml
</param-value>
</context-param>