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📄 delproduct_0002ejsp_jsp.java

📁 java数据库编程实例—————————很好很强大第
💻 JAVA
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import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import org.apache.jasper.runtime.*;


public class delProduct_0002ejsp_jsp extends HttpJspBase {

    // begin [file="/delProduct.jsp";from=(13,0);to=(13,96)]
    // end

    static {
    }
    public delProduct_0002ejsp_jsp( ) {
    }

    private static boolean _jspx_inited = false;

    public final void _jspx_init() throws org.apache.jasper.runtime.JspException {
    }

    public void _jspService(HttpServletRequest request, HttpServletResponse  response)
        throws java.io.IOException, ServletException {

        JspFactory _jspxFactory = null;
        PageContext pageContext = null;
        HttpSession session = null;
        ServletContext application = null;
        ServletConfig config = null;
        JspWriter out = null;
        Object page = this;
        String  _value = null;
        try {

            if (_jspx_inited == false) {
                synchronized (this) {
                    if (_jspx_inited == false) {
                        _jspx_init();
                        _jspx_inited = true;
                    }
                }
            }
            _jspxFactory = JspFactory.getDefaultFactory();
            response.setContentType("text/html; charset=GBK");
            pageContext = _jspxFactory.getPageContext(this, request, response,
            			"", true, 8192, true);

            application = pageContext.getServletContext();
            config = pageContext.getServletConfig();
            session = pageContext.getSession();
            out = pageContext.getOut();

            // begin [file="/delProduct.jsp";from=(0,2);to=(9,0)]
                
                /**
                 * Title:			商店购物管理系统的完整实现
                 * Description:			教学示范
                 * Copyright:			Copyright (c) 2003
                 * Company:			北京师范大学计算机系
                 * @author			孙一林
                 * @version			1.0
                 */
            // end
            // HTML // begin [file="/delProduct.jsp";from=(9,2);to=(10,0)]
                out.write("\r\n");

            // end
            // HTML // begin [file="/delProduct.jsp";from=(10,48);to=(12,0)]
                out.write("\r\n<html>\r\n");

            // end
            // HTML // begin [file="/delProduct.jsp";from=(12,30);to=(13,0)]
                out.write("\r\n");

            // end
            // begin [file="/delProduct.jsp";from=(13,0);to=(13,96)]
                shopmanagesystem.shopManageSystemBean shopManageBean = null;
                boolean _jspx_specialshopManageBean  = false;
                 synchronized (session) {
                    shopManageBean= (shopmanagesystem.shopManageSystemBean)
                    pageContext.getAttribute("shopManageBean",PageContext.SESSION_SCOPE);
                    if ( shopManageBean == null ) {
                        _jspx_specialshopManageBean = true;
                        try {
                            shopManageBean = (shopmanagesystem.shopManageSystemBean) java.beans.Beans.instantiate(this.getClass().getClassLoader(), "shopmanagesystem.shopManageSystemBean");
                        } catch (ClassNotFoundException exc) {
                             throw new InstantiationException(exc.getMessage());
                        } catch (Exception exc) {
                             throw new ServletException (" Cannot create bean of class "+"shopmanagesystem.shopManageSystemBean", exc);
                        }
                        pageContext.setAttribute("shopManageBean", shopManageBean, PageContext.SESSION_SCOPE);
                    }
                 } 
                if(_jspx_specialshopManageBean == true) {
            // end
            // begin [file="/delProduct.jsp";from=(13,0);to=(13,96)]
                }
            // end
            // HTML // begin [file="/delProduct.jsp";from=(13,96);to=(13,98)]
                out.write("  ");

            // end
            // begin [file="/delProduct.jsp";from=(13,100);to=(13,129)]
                /*使用shopManageSystemBean的实例*/
            // end
            // HTML // begin [file="/delProduct.jsp";from=(13,131);to=(18,0)]
                out.write("\r\n<head>\r\n<title>删除售出商品记录</title>\r\n</head>\r\n<body>\r\n");

            // end
            // begin [file="/delProduct.jsp";from=(18,2);to=(32,0)]
                
                  int product_id = Integer.parseInt(new String(request.getParameter("delProductID").getBytes("8859_1")));  //获取用户指定删除的库存商品的ID号
                  boolean isExisted = shopManageBean.isProductExistedInOtherTable(product_id);           //判断卖出商品表和顾客交易表中是否存在涉及到此库存商品的信息
                  if(isExisted)            //若卖出商品表和顾客交易表中存在涉及到此库存商品的信息,则不能删除此库存商品的信息
                  {
                    out.println("<h2 align=center>其它表中仍存在此商品的信息,请首先删除其他表中此商品的信息</h2>");
                    out.println("<p align=center><a href=productSold.jsp>返回</a></p>");
                  }
                  else                   //若不存在,则删除此库存商品信息
                  {
                    shopManageBean.delProduct(product_id);
                    out.println("<h2 align=center>删除售出商品记录成功</h2>");
                    out.println("<p align=center><a href=productList.jsp>返回</a></p>");
                  }
            // end
            // HTML // begin [file="/delProduct.jsp";from=(32,2);to=(35,0)]
                out.write("\r\n</body>\r\n</html>\r\n");

            // end

        } catch (Throwable t) {
            if (out != null && out.getBufferSize() != 0)
                out.clearBuffer();
            if (pageContext != null) pageContext.handlePageException(t);
        } finally {
            if (_jspxFactory != null) _jspxFactory.releasePageContext(pageContext);
        }
    }
}

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