updateaction.java

基于struts开发的网上书店系统。希望对大家有帮助。JSP JavaBean Struts

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package book;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.DynaActionForm;

/** 
 * MyEclipse Struts
 * Creation date: 09-20-2007
 * 
 * XDoclet definition:
 * @struts.action path="/updateAction" name="updateForm" input="/Admin/adminupdate.jsp" scope="request" validate="true"
 * @struts.action-forward name="adminupdate" path="/Admin/adminupdate.jsp"
 * @struts.action-forward name="adminbook" path="/adminAction.do"
 */
public class UpdateAction extends Action {
	/*
	 * Generated Methods
	 */

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
	     SeeDataBean obj=new SeeDataBean();
	     
	     DynaActionForm updateform= (DynaActionForm) form;
	     
	     javax.servlet.http.HttpSession session=request.getSession();
	       
	     if (session.getAttribute("right") == null || session.getAttribute("right").toString().equals("") )
	     {
	        return (mapping.findForward("gotologin"));
	     }
	     else
	     {
	     	String right=session.getAttribute("right").toString();
	     
	     	request.setAttribute("mright", right);
	     }
	     
	      if (request.getParameter("update") != null)
	      {    
	        String mid=(String)updateform.get("mid");  
	        String mnum=(String)updateform.get("mnum");
	        String mtitle=(String)updateform.get("mtitle");
	        String mbookconcern=(String)updateform.get("mbookconcern");
	        String mprice=(String)updateform.get("mprice");
	       
	      if (! obj.updatebook(mid,mnum,mtitle,mbookconcern,mprice))
	           return (mapping.findForward("adminupdate"));
	         
	      }
	      
	      
	      if (request.getParameter("delete") != null)
	      {    
	        String mid=(String)updateform.get("mid");  
	       
	        obj.postsql("delete from booktable where id="+mid);
	        return (mapping.findForward("adminbook"));
	         
	      }
	     
	       if (request.getParameter("Pa") != null)
	      {
	        String myID = request.getParameter("Pa");
	        
	        //String myID="1";
	        String[][] c1=obj.selectrow("select * from booktable where id="+myID);
	        updateform.set("mid",c1[0][0]);
	        updateform.set("mnum",c1[0][1]);
	        updateform.set("mtitle",c1[0][2]);
	        updateform.set("mbookconcern",c1[0][3]);
	        updateform.set("mprice",c1[0][4]);

	        //转向adminibook
	       return (mapping.findForward("adminupdate"));
	      }
	     else
	        return (mapping.findForward("adminbook"));
	     
	    } 
	 }