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bean property name and reference - different values - null pointer exception.

All. Attached herewith all the files. If I give the same name for both bean property name and reference, it returns the object. But it returns null, in case both are different. Please help. Thank you so much.
The AuthenticateAction.java file has got the detailed comments inside it.....
below are my files list:
WIRAdminBaseAction.java ---> my base action
AuthenticateAction.java ---> my java file that calls the bean here
applicationContext_MNC.xml
The below way of calling works...... This is not encouraged, as we
should not use applicationContext always
ApplicationContext applicationContext = WebApplicationContextUtils.getWebApplicationContext(getServletRequest().getSession().getServletConte xt());
ICacheDelegate cacheAction = (ICacheDelegate)applicationContext.getBean("BMOCacheDelegate");
The below way of calling does NOT work .... returns null value....
Please help... I assume that, since I have extended the
WIRAdminBaseAction, i should be able to call the getCacheDelegate
directly and it should return my cacheDelegate object ... Again,
Please note.....if I change my applicationContext_MNC.xml as below,
the below way of calling works fine. But, i don't want to change my
applicationContext_MNC.xml as below, due to some necessity.
<bean id="BMOWIRAdminBaseAction" class="com.symcor.wiradmin.web.action.WIRAdminBase Action">
<property name="cacheDelegate">
<ref bean="cacheDelegate" />
</property>
</bean>
<bean id="cacheDelegate" class="com.symcor.wiradmin.delegate.CacheDelegate" >
<property name="statusDBDAO"><ref bean="BMOStatusDBDAO" /></property>
</bean>
Is it that the name and bean should have the same value.... ??? No
Need to be.....Am i right ? Please advise.
getCacheDelegate().getActorAction(1); // this way of calling doesn't work and returns null value. please help.
MY CODE Follows below.
AuthenticateAction.java
package com.symcor.wiradmin.web.action;
import java.net.UnknownHostException;
import java.sql.SQLException;
import org.bouncycastle.crypto.CryptoException;
import org.springframework.context.ApplicationContext;
import org.springframework.dao.DataAccessException;
import org.springframework.web.context.support.WebApplica tionContextUtils;
import com.symcor.wiradmin.delegate.ICacheDelegate;
public class AuthenticateAction extends WIRAdminBaseAction {
private static final long serialVersionUID = 1L;
public String authenticate() throws UnknownHostException, CryptoException,
DataAccessException, SQLException{
/** This way of calling works...... This is not encouraged, as we should not use applicationContext always **/
ApplicationContext applicationContext = WebApplicationContextUtils.getWebApplicationContex t(getServletRequest().getSession().getServletConte xt());
ICacheDelegate cacheAction = (ICacheDelegate) applicationContext.getBean("BMOCacheDelegate");
/** The below way of calling does NOT work .... returns null value.... Please help...
* I assume that, since I have extended the WIRAdminBaseAction, i should be able to call the getCacheDelegate directly
* and it should return my cacheDelegate object ...
* Again, Please note.....if I change my applicationContext_MNC.xml as below, the below way of calling works fine...
* but, i don't want to change my applicationContext_MNC.xml as below, due to some necessity.
<bean id="BMOWIRAdminBaseAction" class="com.symcor.wiradmin.web.action.WIRAdminBase Action">
<property name="cacheDelegate">
<ref bean="cacheDelegate" />
</property>
</bean>
<bean id="cacheDelegate" class="com.symcor.wiradmin.delegate.CacheDelegate" >
<property name="statusDBDAO"><ref bean="BMOStatusDBDAO" /></property>
</bean>
... is it that the name and bean should have the same value.... ??? No Need to be.....Am i right ? Please advise.
*
* **/
getCacheDelegate().getActorAction(1); // this way of calling doesn't work and returns null value. please help.
return "success";
}
}
WIRAdminBaseAction.java
package com.symcor.wiradmin.web.action;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.interceptor.ParameterAware;
import org.apache.struts2.interceptor.SessionAware;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.Preparable;
import com.opensymphony.xwork2.config.entities.Parameteri zable;
import com.symcor.wiradmin.delegate.ICacheDelegate;
public class WIRAdminBaseAction extends ActionSupport implements Preparable, ParameterAware, Parameterizable, SessionAware,RequestAware {
private HttpServletRequest request;
private static final long serialVersionUID = 1L;
private HttpServletResponse response;
private ICacheDelegate cacheDelegate;
private Map session;
private Map<String, String> params;
private Map parameters;
public void prepare() throws Exception {
}
public String execute() throws Exception {
return SUCCESS;
}
public void setServletRequest(HttpServletRequest request) {
this.request = request;
}
public HttpServletRequest getServletRequest() {
return this.request;
}
public void setServletResponse(HttpServletResponse response) {
this.response = response;
}
public HttpServletResponse getServletResponse() {
return this.response;
}
public ICacheDelegate getCacheDelegate() {
return cacheDelegate;
}
public void setCacheDelegate(ICacheDelegate cacheDelegate) {
this.cacheDelegate = cacheDelegate;
}
public void addParam(final String key, final String value) {
this.params.put(key, value);
}
public Map getParams() {
return params;
}
public void setParams(final Map<String, String> params) {
this.params = params;
}
public Map getSession() {
return this.session;
}
public void setSession(final Map session) {
this.session = session;
}
public void setParameters(final Map param) {
this.parameters = param;
}
}
applicationContext_MNC.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
"http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<!-- database configuration from property file -->
<bean id="BMOAdminDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close" lazy-init="default" autowire="default" dependency-check="default">
<property name="driverClass" value="${jdbc.driver}" ></property>
<property name="jdbcUrl" value="${admin.jdbc.url}" ></property>
<property name="user" value="${admin.jdbc.user}" ></property>
<property name="password" value="${admin.jdbc.password}" ></property>
<property name="initialPoolSize" value="3" ></property>
<property name="minPoolSize" value="3" ></property>
<property name="maxPoolSize" value="25" ></property>
<property name="acquireIncrement" value="1" ></property>
<property name="acquireRetryDelay" value="1000" ></property>
<property name="debugUnreturnedConnectionStackTraces" value="true" ></property>
<property name="maxIdleTime" value="300" ></property>
<property name="unreturnedConnectionTimeout" value="300000" ></property>
<property name="preferredTestQuery" value="SELECT COUNT(*) FROM LOCALE_CODE" ></property>
<property name="checkoutTimeout" value="300000" ></property>
<property name="idleConnectionTestPeriod" value="600000" ></property>
</bean>
<bean id="BMOWIRAdminBaseAction" class="com.symcor.wiradmin.web.action.WIRAdminBase Action">
<property name="cacheDelegate">
<ref bean="BMOCacheDelegate" />
</property>
</bean>
<bean id="BMOCacheDelegate" class="com.symcor.wiradmin.delegate.CacheDelegate" >
<property name="statusDBDAO"><ref bean="BMOStatusDBDAO" /></property>
</bean>
<bean id="BMOStatusDBDAO" class="com.symcor.wiradmin.dao.StatusDBDAO">
<property name="dataSource">
<ref bean="BMOAdminDataSource" />
</property>
</bean>
<!-- this bean is set to map the constants which needs to be configured as per
the environment to the java constants file -->
<bean id="envConstantsConfigbean" class="com.symcor.wiradmin.util.constants.Environm entConstantsSetter">
<property name="loginUrl" value="${login.url}"/>
<property name="logoutIR" value="${logout.from.image.retrieval}"/>
<property name="adminModuleUrl" value="${admin.url}"/>
<property name="adminUrlSym" value="${admin.url.sym}"/>
<property name="envProperty" value="${env.property}"/>
</bean>
</beans>

NullPointerException while calling manager Method from execute quartz scheduler

I've encorporated quartz scheduler in diffrent java file in my JSP Struts/Hibernate application. My execute method looks like below:
public void execute(JobExecutionContext jExeCtx) throws JobExecutionException {
try {
userDetailManager = new UserDetailManagerImpl();
userDetailManager.sendMailTxnDetailsEveryNight();
} catch (ApplicationException ex) {
java.util.logging.Logger.getLogger(JobClass.class.getName()).log(Level.SEVERE, null, ex);
}
}
Then im calling sendMailTxnDetailsEveryNight method and looks like:
public void sendMailTxnDetailsEveryNight() throws ApplicationException{
List<RemittanceTransactionBean> rBean = remittanceTransactionDao.getTodayTxnSummary();
return rBean;
}
Im getting nullpointerException at given point :
java.lang.NullPointerException
at com.mtmrs.business.user.impl.UserDetailManagerImpl.sendMailTxnDetailsEveryNight(UserDetailManagerImpl.java:754)
at com.mtmrs.util.common.JobClass.execute(JobClass.java:44)
How do i need to call the getTodayTxnSummary(); so that i dont get any error. I defined the remittanceTransactionDao in applicationContext as well:
<bean id="userDetailManager" parent="abstractTxDefinition">
<property name="target">
<bean class="com.mtmrs.business.user.impl.UserDetailManagerImpl">
<property name="remittanceTransactionDao" ref="remittanceTransactionDao"></property>
</bean>
</property>
</bean>
I tried debugging and see, the remittanceTransactionDao is null. I also tried setting below before calling method remittanceTransactionDao. This way the session variable im using in sendMailTxnDetailsEveryNight is null. I m stuck here.
remittanceTransactionDao = new RemittanceTransactionDaoHibernate(RemittanceTransaction.class);

I removed the classes and configured the follwing in my application-Context Dao.xml.
<bean name="runMeJob" class="org.springframework.scheduling.quartz.JobDetailBean">
<property name="jobClass" value="com.mtmrs.util.common.RunMeJob" />
<property name="jobDataAsMap">
<map>
<entry key="userDetailManager" value-ref="userDetailManager" />
</map>
</property>
</bean>
<bean id="cronTrigger"
class="org.springframework.scheduling.quartz.CronTriggerBean">
<property name="jobDetail" ref="runMeJob" />
<property name="cronExpression" value="0 0 10,12,14,16,18,20,22,23 * * ?" />
</bean>
<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="jobDetails">
<list>
<ref bean="runMeJob" />
</list>
</property>
<property name="triggers">
<list>
<ref bean="cronTrigger" />
</list>
</property>
</bean>
Then i removed everything about the quartz implementaion code whatever i was trying to make, and added this class:
package com.mtmrs.util.common;
import com.mtmrs.business.user.UserDetailManager;
import com.mtmrs.util.logger.MTMRSLogger;
import com.mtmrs.util.logger.ApplicationException;
import java.util.logging.Level;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.QuartzJobBean;
public class RunMeJob extends QuartzJobBean {
UserDetailManager userDetailManager;
public UserDetailManager getUserDetailManager() {
return userDetailManager;
}
public void setUserDetailManager(UserDetailManager userDetailManager) {
this.userDetailManager = userDetailManager;
}
#Override
protected void executeInternal(JobExecutionContext context)
throws JobExecutionException {
System.out.print("Entering Class: Job Class , method: execute");
try {
userDetailManager.sendMailTxnDetailsEveryNight();
} catch (ApplicationException ex) {
java.util.logging.Logger.getLogger(RunMeJob.class.getName()).log(Level.SEVERE, null, ex);
}
System.out.print("Exiting Class: Job Class , method: execute");
}
}
Also i downgraded the version of quartz jar to 1.x.
I needed to use a method in userDetailManager (ie sendMailTxnDetailsEveryNight) object as the job that run every 2 hours as specified in the trigger.
Basically i followed this link: Mykong
Hope this can be of help to someone.

Setting up spring email with application context

I want my application to be able to send email on demand. I am currently using the tutorial from www.mykong.com which details setting up gmail settings.
However, I can't get the configuration settings into my annotated spring controllers: I want to avoid using the following:
ApplicationContext context = new FileSystemXmlApplicationContext(email-context.xml");
MailMail mm = (MailMail) context.getBean("mailMail");
mm.send(message);
From my investigation this seems rather frowned upon. I've tried several things, but none of them seem to find the correct bean and produce a nullpointerexception. Is there a way I can add this to any neccessary controllers, e.g. #Property(mailMail) or #Autowired private mailMail? Or should I just move the settings from my email-context into the java itself?
My files are below:
EmailSender.java
public class EmailSender {
#Autowired
private MailSender mailSender;
public void sendMail(String subject, String msg) {
SimpleMailMessage message = new SimpleMailMessage();
message.setFrom("beesden#*.com");
message.setTo("beesden#*.com");
message.setSubject(subject);
message.setText(msg);
mailSender.send(message);
}
}
PageController
#RequestMapping(value = { "/{name}" }, method = RequestMethod.GET)
public String showPage(#PathVariable("name") String name, HttpServletRequest request, Model model) {
logger.debug("Page request: " + name);
mm.sendMail("Hi","Test");
return "webpage";
}
email-context.xml
<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
<property name="host" value="smtp.gmail.com" />
<property name="port" value="587" />
<property name="username" value="toby#gmail.com" />
<property name="password" value="tobytobytoby" />
<property name="javaMailProperties">
<props>
<prop key="mail.smtp.auth">true</prop>
<prop key="mail.smtp.starttls.enable">true</prop>
</props>
</property>
</bean>
<bean id="mailMail" class="org.system.EmailSender">
<property name="mailSender" ref="mailSender" />
</bean>
(note I changed the username and password for here, they are correct in the system...)
Many thanks

Not routing DataSource with Spring 3 and MyBatis

I have a default database and sometimes I have to make a select in another database.
I've searched many blogs and questions here about this, but couldn't make it work.
Tried the http://blog.springsource.org/2007/01/23/dynamic-datasource-routing/ way. Nothing.
Code for RouterDataSource class:
public class RouterDataSource extends AbstractRoutingDataSource {
#Override
protected DataSourceEnum determineCurrentLookupKey() {
return DataSourceContextHolder.getTargetDataSource();
}
}
Code for DataSourceContextHolder class:
public class DataSourceContextHolder {
private static final ThreadLocal<DataSourceEnum> contextHolder = new ThreadLocal<DataSourceEnum>();
public static void setTargetDataSource(DataSourceEnum targetDataSource) {
Assert.notNull(targetDataSource, "Target data source cannot be null");
contextHolder.set(targetDataSource);
}
public static DataSourceEnum getTargetDataSource() {
if (contextHolder.get() != null)
return (DataSourceEnum) contextHolder.get();
else
return DataSourceEnum.DB1;
}
public static void resetDefaultDataSource() {
contextHolder.remove();
}
}
Code for the method calling to change the database:
#Override
public CodeHD getCategoryByCode(String code) throws BusinessException {
DataSourceContextHolder.setTargetDataSource(DataSourceEnum.DATABASE2);
return (CodeHD) persistency.getObject(GETOBJECT_BY_CODE, code);
}
Code for DatasourceEnum class:
public enum DataSourceEnum {
DB1,
DB2;
}
And finally the configuration on my applicationContext.xml:
<bean id="parentDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" abstract="true">
<property name="driverClass" value="oracle.jdbc.pool.OracleDataSource" />
<property name="acquireIncrement" value="10" />
<property name="idleConnectionTestPeriod" value="60" />
<property name="maxStatements" value="50" />
<property name="minPoolSize" value="5" />
<property name="maxPoolSize" value="15" />
</bean>
<bean id="database1DS" parent="parentDataSource">
<property name="jdbcUrl" value="jdbc:oracle:thin:#database1:1521:xe" />
<property name="user" value="user" />
<property name="password" value="password" />
</bean>
<bean id="database2DS" parent="parentDataSource">
<property name="jdbcUrl" value="jdbc:oracle:thin:#database2:1521:xe" />
<property name="user" value="user" />
<property name="password" value="password" />
</bean>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<bean id="dataSource" class="package.RouterDataSource">
<property name="defaultTargetDataSource" ref="database1DS"/>
<property name="targetDataSources">
<map key-type="package.DataSourceEnum">
<entry key="DB1" value-ref="database1DS"/>
<entry key="DB2" value-ref="database2DS"/>
</map>
</property>
</bean>
The problem is that when I set it to DB2 it won't change.
Can anyone help me?

Try to make both static method as non static and pass R reference if the context holder.

First make sure that database2DS is working correctly. Make the defaultTargetDatasource database2DS and verify that it is not using DB1 still and there are no other errors using database2DS as the default. If the AbstractRoutingDataSource fails to resolve a DataSource in the targetDataSources you cannot switch to it.
AbstractRoutingDataSource will only change the DataSource when getConnection is called. Whatever persistence framework you're using is probably caching the Connection and not calling getConnection in between persistency.getObject(). However you are getting your persistency object, try getting a new persistency object after you change the datasource in DataSourceContextHolder. If this solves your problem, try creating a class that maintains your persistency object and handles changing the datasource. That way when you change the datasource you can modify your persistency manager object in one spot.

How to configure Spring to avoid setting Pragma No-Cache

My system is Spring MVC based and I checked that Spring automatically sets PRAGMA: no-cache. The system is available to the users through SSL. When the users try to download something using the INTERNET EXPLORER 7 or 8 an error like "Internet Explorer cannot download file from server" appears (more details: http://support.microsoft.com/default.aspx?scid=KB;EN-US;q316431&).
I tried to configure the WebContentInterceptor like the code bellow but does not work:
<mvc:interceptors>
<bean id="webContentInterceptor" class="org.springframework.web.servlet.mvc.WebContentInterceptor">
<property name="cacheSeconds" value="2100" />
<property name="useExpiresHeader" value="false" />
<property name="useCacheControlHeader" value="false" />
<property name="useCacheControlNoStore" value="false" />
</bean>
</mvc:interceptors>
What can I do avoid Spring send the Pragma: no-cache and related to Cache Control?
Regards!

You can write your own custom interceptor and set the header values to the response object. Interceptors are nothing but filters so override the filter and use the
prehandle and posthandle to set the request and response headers respectively.
Let me know if you want specific examples doing that.
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/**" />
<beans:bean id="customInterceptor"
class="org.example.interceptors.CustomInterceptor">
</beans:bean>
</mvc:interceptor>
</mvc:interceptors>
public class CustomInterceptor implements HandlerInterceptor{
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object arg2, ModelAndView modelAndView) throws Exception {
response.setHeader(...);}
}

The simplest approach is probably just to stop the header from being written with a servlet filter. This way no Spring configuration has to be modified and you pick up the correct cache functionality for free.
public class PragmaFilter implements Filter {
private static String PRAGMA_HEADER = "Pragma";
#Override
public void init(FilterConfig filterConfig) throws ServletException { }
#Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
chain.doFilter(request, new NoPragmaHttpServletResponseWrapper(response));
}
#Override
public void destroy() { }
private final class NoPragmaHttpServletResponseWrapper extends HttpServletResponseWrapper {
private NoPragmaHttpServletResponseWrapper(ServletResponse response) {
super((HttpServletResponse) response);
}
#Override
public void addHeader(String name, String value) {
if (PRAGMA_HEADER.equals(name)) {
return;
}
super.addHeader(name, value);
}
#Override
public void setHeader(String name, String value) {
if (PRAGMA_HEADER.equals(name)) {
return;
}
super.setHeader(name, value);
}
}
}

Try to set cache seconds to an negative value.
If this does not help you will need to override:
protected final void preventCaching(HttpServletResponse response)
or
protected final void applyCacheSeconds(HttpServletResponse response, int seconds, boolean mustRevalidate)
Both methods are implements in WebContentGenerator

<mvc:interceptors>
<bean id="webContentInterceptor" class="org.springframework.web.servlet.mvc.WebContentInterceptor">
<property name="cacheSeconds" value="2100" />
<property name="useExpiresHeader" value="false" />
<property name="useCacheControlHeader" value="false" />
<property name="useCacheControlNoStore" value="false" />
<property name="cacheMappings">
<props>
<prop key="/**/**">-1</prop><!-- removes pragma no-cache -->
</props>
</property>
</bean>
</mvc:interceptors>