clientaction.java

利用JAVA语言以及数据库技术及网络编程相关技术来实现的一个简单的小的应用系统

//---------------------------------------------------------
// Application: Gsm of Application
// Author     : esingle
// File       : ClientAction.java
//
// Copyright 2004 landsoft corp
// Generated at Wed Mar 10 15:35:57 CST 2004
// created by 曹广鑫
// mailto:[e-mail]
//---------------------------------------------------------


package com.landsoft.gsm.controller;

import javax.sql.*;
import java.util.*;

import org.apache.commons.logging.LogFactory;


import javax.servlet.http.*;
import javax.servlet.*;

import org.apache.struts.action.*;
import org.apache.struts.util.*;

import com.landsoft.gsm.model.*;
import com.landsoft.gsm.dao.*;
import com.landsoft.gsm.util.*;

public class ClientAction extends Action {
  private org.apache.commons.logging.Log __log = LogFactory.getFactory().getInstance(this.getClass());
  private static final int PAGE_LENGTH = 20;

  public ActionForward execute(ActionMapping mapping, ActionForm form,
      HttpServletRequest request, HttpServletResponse response) {
    ActionForward myforward = null;
    String myaction = mapping.getParameter();

    if (isCancelled(request)) {
      if (__log.isInfoEnabled()) {
        __log.info(" [Client] " + mapping.getAttribute() + " - action was cancelled");
      }
      return mapping.findForward("cancel");
    }
    if (__log.isInfoEnabled()) {
      __log.info(" [Client] action: "+myaction);
    }
    if ("".equalsIgnoreCase(myaction)) {
      myforward = mapping.findForward("failure");
    } else if ("VIEW".equalsIgnoreCase(myaction)) {
      myforward = performView(mapping, form, request, response);
    } else if ("EDIT".equalsIgnoreCase(myaction)) {
      myforward = performEdit(mapping, form, request, response);
    } else if ("ADD".equalsIgnoreCase(myaction)) {
      myforward = performAdd(mapping, form, request, response);
    } else if ("SAVE".equalsIgnoreCase(myaction)) {
      myforward = performSave(mapping, form, request, response);
    } else if ("REMOVE".equalsIgnoreCase(myaction)) {
      myforward = performRemove(mapping, form, request, response);
    } else if ("TRASH".equalsIgnoreCase(myaction)) {
      myforward = performTrash(mapping, form, request, response);
    } else if ("LIST".equalsIgnoreCase(myaction)) {
      myforward = performList(mapping, form, request, response);
    } else if ("NEWQUERY".equalsIgnoreCase(myaction)) {
      myforward = performnewQuery(mapping, form, request, response);
    } else {
      myforward = mapping.findForward("failure");
    }
    return myforward;
  }


  private ActionForward performList(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request, HttpServletResponse response) {
    try {
      DataSource ds = (DataSource) servlet.getServletContext().getAttribute(Action.DATA_SOURCE_KEY);

      ClientDAO clientDAO = new ClientDAO(ds);

      int offset;
      int length = PAGE_LENGTH;
      String pageOffset = request.getParameter("pager.offset");
      if (pageOffset == null || pageOffset.equals("")) {
        offset = 0;
      } else {
        offset = Integer.parseInt(pageOffset);
      }

      List clients = clientDAO.list(offset, length);

      String[] objKeys = {"Client", "list"};
      String objKey = CacheManager.createKey(objKeys);
      Integer size = (Integer)SizeCacheManager.getCache(objKey);
      if(size == null) {
        size = new Integer(clientDAO.getSize("client", ""));
        SizeCacheManager.putCache(size, objKey, 1);
      }

      String url = request.getContextPath()+"/"+mapping.getPath()+".do";
      String pagerHeader = Pager.generate(offset, size.intValue(), length, url);
      request.setAttribute("pagerHeader", pagerHeader);

      request.setAttribute("CLIENTS", clients);
    } catch (Exception e) {
      generalError(request, e);
      return mapping.findForward("failure");
    }

    return mapping.findForward("success");
  }

  private ActionForward performView(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request, HttpServletResponse response) {
    ClientForm form = (ClientForm) actionForm;
    try {
      DataSource ds = (DataSource) servlet.getServletContext().getAttribute(Action.DATA_SOURCE_KEY);

      ClientDAO clientDAO = new ClientDAO(ds);

      String mobile = request.getParameter("mobile");
      Client client = clientDAO.retrieve(mobile);
      if (client == null) {
        ActionErrors aes = new ActionErrors();
        aes.add(aes.GLOBAL_ERROR, new ActionError("error.object.notfound", "Client"));
        saveErrors(request, aes);
        if (__log.isErrorEnabled()) {
          __log.error(" [Client] Object not found");
        }
      } else {
        org.apache.commons.beanutils.BeanUtils.populate(form, org.apache.commons.beanutils.BeanUtils.describe(client));
      }
    } catch (Exception e) {
      generalError(request, e);
      return mapping.findForward("failure");
    }
    return mapping.findForward("success");
  }

  private ActionForward performSave(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request, HttpServletResponse response) {
    ClientForm form = (ClientForm) actionForm;

    try {
      DataSource ds = (DataSource) servlet.getServletContext().getAttribute(Action.DATA_SOURCE_KEY);

      ClientDAO clientDAO = new ClientDAO(ds);

      Client client = new Client();
      org.apache.commons.beanutils.BeanUtils.populate(client, org.apache.commons.beanutils.BeanUtils.describe(form));
      int strutsAction = form.getStrutsAction();
      if (strutsAction == ClientForm.ADD) {
        String mobile = client.getMobile();
        if (clientDAO.retrieve(mobile) == null) {
          clientDAO.insert(client);
        } else {
          sqlDuplicateError(request, "Client");
          return mapping.findForward("failure");
        }
      } else if (strutsAction == ClientForm.EDIT) {
        clientDAO.update(client);
      }
    } catch (Exception e) {
      generalError(request, e);
      return mapping.findForward("failure");
    }
    return mapping.findForward("success");
  }

  private ActionForward performEdit(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request, HttpServletResponse response) {
    ClientForm form = (ClientForm) actionForm;
    form.setStrutsAction(ClientForm.EDIT);
    try {
      DataSource ds = (DataSource) servlet.getServletContext().getAttribute(Action.DATA_SOURCE_KEY);

      ClientDAO clientDAO = new ClientDAO(ds);

      String mobile = request.getParameter("mobile");

      Client client = clientDAO.retrieve(mobile);
      org.apache.commons.beanutils.BeanUtils.populate(form, org.apache.commons.beanutils.BeanUtils.describe(client));
    } catch (Exception e) {
      generalError(request, e);
      return mapping.findForward("failure");
    }
    return mapping.findForward("success");
  }

  private ActionForward performAdd(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request, HttpServletResponse response) {
    ClientForm form = (ClientForm) actionForm;
    form.setStrutsAction(ClientForm.ADD);
    return mapping.findForward("success");
  }
  private ActionForward performRemove(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request, HttpServletResponse response) {
    return performView(mapping, actionForm, request, response);
  }

  private ActionForward performTrash(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request, HttpServletResponse response) {
    ClientForm form = (ClientForm) actionForm;
    try {
      DataSource ds = (DataSource) servlet.getServletContext().getAttribute(Action.DATA_SOURCE_KEY);

      ClientDAO clientDAO = new ClientDAO(ds);

      String mobile = request.getParameter("mobile");
      clientDAO.delete(mobile);
    } catch (Exception e) {
      generalError(request, e);
      return mapping.findForward("failure");
    }
    return mapping.findForward("success");
  }
  private ActionForward performnewQuery(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request, HttpServletResponse response) {
    ClientForm form = (ClientForm) actionForm;
    try {
      DataSource ds = (DataSource) servlet.getServletContext().getAttribute(Action.DATA_SOURCE_KEY);

      ClientDAO clientDAO = new ClientDAO(ds);
      int offset;
      int length = PAGE_LENGTH;
      String pageOffset = request.getParameter("pager.offset");
      if (pageOffset == null || pageOffset.equals("")) {
        offset = 0;
      } else {
        offset = Integer.parseInt(pageOffset);
      }

      String mobile = form.getMobile();
      String name = form.getName();
      String sfzh = form.getSfzh();
      String[] objKeys = {"Client", "newQuery", String.valueOf(mobile), String.valueOf(name), String.valueOf(sfzh)};
      String objKey = CacheManager.createKey(objKeys);
      Integer size = (Integer)SizeCacheManager.getCache(objKey);
      if(size == null) {
        size = new Integer(clientDAO.getSize("client", ""));
        SizeCacheManager.putCache(size, objKey, 1);
      }
      List clients = clientDAO.newQuery(offset, length, mobile, name, sfzh);
      String url = request.getContextPath()+"/"+mapping.getPath()+".do"+"?mobile="+mobile+"&name="+name+"&sfzh="+sfzh;
      String pagerHeader = Pager.generate(offset, size.intValue(), length, url);
      request.setAttribute("pagerHeader", pagerHeader);

      request.setAttribute("CLIENTS", clients);
    } catch (Exception e) {
      generalError(request, e);
      return mapping.findForward("failure");
    }

    return mapping.findForward("success");
  }



  private void sqlDuplicateError(HttpServletRequest request, String objName) {
    ActionErrors aes = new ActionErrors();
    aes.add(aes.GLOBAL_ERROR, new ActionError("errors.database.duplicate", objName));
    saveErrors(request, aes);
    if (__log.isErrorEnabled()) {
      __log.error(" [Client] Duplicate key Error - " + objName);
    }
  }

  private void generalError(HttpServletRequest request, Exception e) {
    ActionErrors aes = new ActionErrors();
    aes.add(aes.GLOBAL_ERROR, new ActionError("error.general", e.getMessage()));
    saveErrors(request, aes);
    e.printStackTrace();
    if (__log.isErrorEnabled()) {
      __log.error(" [Client] Error - " + e.getMessage());
    }
  }
}