savetxaction.java

STRUTS数据库项目开发宝典

package org.helpsoft.actions;

import java.text.SimpleDateFormat;
import javax.servlet.*;
import javax.servlet.http.*;
import org.helpsoft.servicelocator.*;
import org.helpsoft.session.AssociatorManageService;
import org.apache.struts.action.*;
import org.helpsoft.forms.*;
import com.helpsoft.util.log.*;
import com.helpsoft.util.*;
import com.helpsoft.util.genelv.struts.GenericAction;
import org.helpsoft.session.*;
import org.helpsoft.entity.tx.*;
import com.helpsoft.Constants;
import org.helpsoft.forms.TxForm;

/**
 * Implementation of <strong>Action</strong>
 *
 * @author  cao guangxin - www.relationinfo.com
 * @struts.action path="/saveTx"
 *                type="org.helpsoft.actions.SaveTxAction"
 *                name="txForm"
 *                scope="request"
 *                input="/tx.jsp"
 * @struts.action-forward name="success" path="/initTxSearch.do"
 */
public class SaveTxAction extends ServiceAction {
   private transient Logger log = LogService.getLogger(this.getClass());

   /**
    * Performs an action.
    *
    * @param mapping The ActionMapping used to select this instance
    * @param form The optional ActionForm bean for this request (if any)
    * @param request The optional ActionForm bean for this request (if any)
    * @param response The HTTP response we are creating
    * @return describes where and how control should be forwarded, or <code>null</code> if the response has already
    *         been completed
    * @throws Exception in case of an error
    */
   public ActionForward doPerform(ActionMapping mapping, ActionForm form, HttpServletRequest request,
                                HttpServletResponse response) throws Exception {

      log.info("start doPerform");
      HttpSession session = request.getSession();
      TxForm subform = (TxForm) form;
      String txbh = subform.getTxbh();
      if (txbh != null && (txbh.equalsIgnoreCase("null") || txbh.length() < 1)) {
         txbh = null;
         subform.setTxbh(null);
      }
      org.helpsoft.session.AssociatorManageService facade = getAssociatorManageService();

      // Was this transaction cancelled?
      if (isCancelled(request)) {
         if (mapping.getAttribute() != null) {
            session.removeAttribute(mapping.getAttribute());
         }
         return (mapping.findForward("success"));
      }

      try {
         // Retrieve the information       
         TxData data = new TxData();


         PropertyUtilsExt.copyProperties(data, subform);
         // Save to database..
         if ("new".equals(subform.getMode())) {
            if (request.getParameter("submit") != null) {
               facade.addTx(data);
            }
         }
         else {
            if (request.getParameter("submit") != null) {
               facade.saveTx(data);
            }
            else if (request.getParameter(Constants.SUBMIT_NO_VALIDATION) != null) {
               facade.deleteTx(data.getTxbh());
            }
         }
      }
      catch (Throwable t) {
         log.error("SaveTxAction :", t);
         throw new Exception("SaveTxAction :", t);
      }

      // Remove the obsolete form bean
      if (mapping.getAttribute() != null) {
         if ("request".equals(mapping.getScope())) {
            request.removeAttribute(mapping.getAttribute());
         }
         else {
            session.removeAttribute(mapping.getAttribute());
         }
      }

      return mapping.findForward("success");
   }
}