Need help for refreshing the page

[amma mal]

Hi all,

Please help me with this problem, my JSP page is displaying errors when anything is not entered in textfield that is working fine, but when i click the back button and entering into the same JSP page still it is displaying the errors.It shouldn't show anything(refresh the page).In my struts-config file my scope="session"

any suggestions.

Thanks.

[Mudit Srivastava]

Hi Amma,

Am unsure of how you could do so in Struts 1.X. I use an interceptor like this in Struts 2. The Code might help you.

  public class ClearErrorsnMessagesInterceptor extends MethodFilterInterceptor 
{
	private static final long serialVersionUID = 1L;
	private Log log = LogFactory.getLog(ClearErrorsnMessagesInterceptor.class);

	private String excludeMethodsActionMessages;
	private String includeMethodsActionMessages;

    public void setExcludeMethodsActionMessages(String excludeMethodsActionMessages) {
        this.excludeMethodsActionMessages = excludeMethodsActionMessages;
    }

    public void setIncludeMethodsActionMessages(String includeMethodsActionMessages) {
        this.includeMethodsActionMessages = includeMethodsActionMessages;
    }

	/**
	 * This method is used for Clearing Errors and Messages that are set in the Action Classes 
	 * If a a method is in the exclude list for ActionMessages ("excludeMethodsActionMessages"), action messages are not cleared
	 * but errors are still cleared.
	 * If method is in the exclude list ("excludeMethods") this interceptor is skipped.
	 * @see com.opensymphony.xwork2.interceptor.MethodFilterInterceptor#intercept(com.opensymphony.xwork2.ActionInvocation)
	 * @see com.opensymphony.xwork2.interceptor.MethodFilterInterceptor#doIntercept(com.opensymphony.xwork2.ActionInvocation)
	 */
	public String doIntercept(ActionInvocation invocation) throws Exception 
	{
		if (log.isDebugEnabled())
			log.debug("doIntercept Entered: ActionInvocation: "+invocation);
		ActionSupport action = null;
		String result = null;
		if (invocation.getAction() instanceof ActionSupport)
		{
			action = (ActionSupport) invocation.getAction();
			if (log.isDebugEnabled())
			{
				log.debug("doIntercept errors:getActionErrors "+action.getActionErrors());
				log.debug("doIntercept errors:getFieldErrors "+action.getFieldErrors());
				log.debug("doIntercept errors:getActionMessages "+action.getActionMessages());
			}
			
	        String method = invocation.getProxy().getMethod();
	        /* if method is in the exclude list for ActionMessages, action messages are not cleared */
			if (!MethodFilterInterceptorUtil.applyMethod(excludeMethodsActionMessages, includeMethodsActionMessages, method))
			{
				/* Clearing Errors only */
				if (log.isDebugEnabled())
					log.debug("doIntercept executing  Clear Errors ");
				action.setActionErrors(new ArrayList());
				action.setFieldErrors(new HashMap());
			}
			else
			{
				/* Clearing Errors and Messages */
				if (log.isDebugEnabled())
					log.debug("doIntercept executing  Clear Errors & Messages");
				action.clearErrorsAndMessages(); //this does the magic 
			}
			
			
			if (log.isDebugEnabled())
			{
				log.debug("doIntercept errors:getActionErrors "+action.getActionErrors());
				log.debug("doIntercept errors:getFieldErrors "+action.getFieldErrors());
				log.debug("doIntercept errors:getActionMessages "+action.getActionMessages());
			}
		}
		else
		{
			if (log.isErrorEnabled())
				log.error("doIntercept Action | invocation.getAction() is not an instance of com.opensymphony.xwork2.ActionSupport", new Exception("Action | invocation.getAction() is not an instance of com.opensymphony.xwork2.ActionSupport"));
		}

		result = invocation.invoke();

		if (action!=null)
		{
			if (log.isDebugEnabled())
			{
				log.debug("doIntercepterrors:getActionErrors "+action.getActionErrors());
				log.debug("doIntercept errors:getFieldErrors "+action.getFieldErrors());
				log.debug("doIntercept errors:getActionMessages "+action.getActionMessages());
			}
		}

		if (log.isDebugEnabled())
			log.debug("doIntercept Exited: result: "+ result);
		return result;
	}

}  

You need to define the interceptor in struts-default.xml and include it your interceptor stack of course.

[amma mal]

Hi,

Thanks for your reply, I dint understand your code, but I think there is a simple solution for this using errors.clear()
I dont know at which place I have to give this, Please anybody give me suggessions.

Thanks.