adminbookspageaction.java

一个学习了解struts的例子。需要组件：struts1.2 jsp2.0 servlet2.4 jdk1.5 tomcat5.5 jstl1.1

package com.gton.action.admin;

import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForm;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.Action;
import com.gton.tookit.MyForward;
import com.gton.bean.db.DataBean;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;

public class AdminBooksPageAction extends Action {
    public ActionForward execute(ActionMapping mapping, ActionForm form,
                                 HttpServletRequest request,
                                 HttpServletResponse response) {
        int page=1;
       int count=10;
       int pagecount=0;
       String sqlStr="";
       String seach="";
       String bookTypeID="0";
       String seachstr="";
       if(request.getParameter("seachstr")!=null&&request.getParameter("seachstr").length()>0)
       {
           try {
               seachstr = new String(request.getParameter("seachstr").getBytes("8859_1"),"GB2312");
               System.out.println(seachstr);
           } catch (UnsupportedEncodingException ex) {
               ex.printStackTrace();
           }
       }
       if(request.getParameter("page")!=null&&request.getParameter("page").length()>0)
       {
           page=Integer.parseInt(request.getParameter("page"));
       }
       if(request.getParameter("seach")!=null&&request.getParameter("seach").length()>0)
       {
           seach=request.getParameter("seach");
           if(seach.equals("1"))
           {
               sqlStr="where Books_Name like '%"+seachstr+"%'";
           }else if(seach.equals("2"))
           {
               sqlStr="where Books_Company like '%"+seachstr+"%'";
           }else if(seach.equals("3"))
           {
               sqlStr="where Books_Company like '%"+seachstr+"%' or Books_Name like '%"+seachstr+"%'";
           }
       }
       if(request.getParameter("bookTypeID")!=null&&request.getParameter("bookTypeID").length()>0)
       {
           bookTypeID=request.getParameter("bookTypeID");
       }
       if(sqlStr.equals(""))
       {
           if(!bookTypeID.equals("0"))
           sqlStr="where BookType_ID="+bookTypeID;
       }else
       {
           if(!bookTypeID.equals("0"))
            sqlStr+="and BookType_ID="+bookTypeID;
       }
       DataBean db=new DataBean();
       ArrayList list=db.getBooksList(count,page,sqlStr);
       System.out.println(list.size());
       db.Close();
       request.setAttribute("list",list);
       request.setAttribute("page",page+"");
       request.setAttribute("pagecount",db.pagecount+"");
       request.setAttribute("bookTypeID",bookTypeID);
       request.setAttribute("seach",seach);
       request.setAttribute("seachstr",seachstr);
       return MyForward.forward(mapping.findForward("admin_index"),"?action=2");

    }
}