Spring applicationContext configuration for scheduled methods - spring

Question

I'm working on a Spring Roo web app, and need to use a Scheduled method that runs in background every certain time, then I added some
lines to my applicationContext.xml, and that method ran ok, but then
occured that the app wasn't able to set up/read the
transactionManager, the console says The matching wildcard is strict, but no declaration can be found for element 'tx:annotation-driven'.
I already searched, and found in this site, 2 or 3 answers to this error message, such aS:
add xmlns:tx="http://www.springframework.org/schema/tx to the
header [already done]
add component:scan before tx:annotation [already done] but when I try to run my app on the server, it throws
a HTTP Status 404 The Requested Resource is not available, could you
help me to fix the xml file?
this is my applicationContext.xml file:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
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-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util.xsd
http://www.springframework.org/schema/task
http://www.springframework.org/schema/task/spring-task-3.0.xsd"
xmlns:task="http://www.springframework.org/schema/task"
xmlns:tx="http://www.springframework.org/schema/tx">
<context:component-scan base-package="org.webapp.services.tasks">
</context:component-scan>
<task:annotation-driven />
<bean id="scheduledMethod" class="com.myhome.myproject.web.ScheduledJobsController">
</bean>
<context:property-placeholder location="classpath*:META-INF/spring/*.properties"/>
<context:spring-configured/>
<context:component-scan base-package="com.myhome.myproject">
<context:exclude-filter expression=".*_Roo_.*" type="regex"/>
<context:exclude-filter expression="org.springframework.stereotype.Controller" type="annotation"/>
</context:component-scan>
<bean class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" id="dataSource">
<property name="driverClassName" value="${database.driverClassName}"/>
...
</bean>
<bean class="org.springframework.orm.jpa.JpaTransactionManager" id="transactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<context:component-scan base-package="com.myhome.myproject"></context:component-scan>
<tx:annotation-driven mode="aspectj" transaction-manager="transactionManager"/>
<bean class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" id="entityManagerFactory">
<property name="persistenceUnitName" value="persistenceUnit"/>
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>

Answer 1

You declared the usage of the tx namespace by doing
xmlns:tx="http://www.springframework.org/schema/tx"
But you forgot to declare the location of the xsd for this namespace in the xsi:schemaLocation attribute:
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.1.xsd