908278272595001c14a9f86254b3ddcd

我们做的J2EE课程设计实验,使用JSF语言编写一个简易的订单系统,麻雀虽小五脏俱全,适合初学者学习J2EE时参考,代码简炼精深,具有一定的参考价值.

package data;
import java.sql.Connection;
//import java.
import java.sql.DriverManager;
import javax.faces.component.UICommand;
import javax.faces.context.FacesContext;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.*;
public class Data {
	public Connection con;
	private UICommand selectitem;
    private String ordernum;
    private String buyer;
    private String sum;
    private String itemnum;
    private String item;
    private String num;
    private String price;
    public List link;
    public Data()
    {
    	//System.out.print("no");
    	String CLASSFORNAME="com.microsoft.jdbc.sqlserver.SQLServerDriver";
		String SERVANDDB="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=scm";
		String USER="sa";
		String PWD="bigtwo863158";
		try
		{
		Class.forName(CLASSFORNAME);
		con = DriverManager.getConnection(SERVANDDB,USER,PWD);
		}
		catch(Exception e)
		{
		//System.out.println("slkdjf");
		e.printStackTrace();
		}
    }
    public void setOrdernum(String ordernum){
    	this.ordernum=ordernum;
    }
    public void setBuyer(String buyer){
    	this.buyer=buyer;
    }
    public void setSum(String sum){
    	this.sum=sum;
    }
    public void setItemnum(String itemnum){
    	this.itemnum=itemnum;
    }
    public void setItem(String item){
    	this.item=item;
    }
    public void setNum(String num){
    	this.num=num;
    }
    public void setPrice(String price){
    	this.price=price;
    }
	public void setLink(List link)
	{
		this.link=link;
	}
	public void setSelectitem(UICommand selectitem){
		this.selectitem=selectitem;
		//System.out.print("yes");
	}
	public List getLink ()
	{
		//System.out.print("yes");
		link=new ArrayList();
		try
		{
		Statement stm=con.createStatement();
		ResultSet result=stm.executeQuery("select * from t_order");
		while(result.next())
		{
			Data d=new Data();
			d.setOrdernum(result.getString("Ordernum"));
			d.setBuyer(result.getString("Buyer"));
			d.setSum(result.getString("Sum"));
			//Itemnum=result.getString("Itemnum");
			//Item=result.getString("Item");
			//Num=result.getString("Price");
			link.add(d);
		}
		}catch(Exception e)
		{
			e.printStackTrace();
		}
		return link;
	}
	public String getOrdernum(){
		//System.out.print("ni");
		return ordernum;
	}
	public String getBuyer(){
		return buyer;
	}
	public String getSum(){
		return sum;
	}
	public String getItem(){
		return item;
	}
	public String getItemnum(){
		return itemnum;
	}
	public String getNum(){
		return num;
	}
	public String getPrice(){
		return price;
	}
	public UICommand getSelectitem(){
		return selectitem;
	}
	public String delete(){
	    //System.out.print("go ");
		System.out.print(Data.getRequestParameter("asdf"));
		return "a";
	}
	 public static String getRequestParameter(String name)     
     {
        return (String)FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get(name);           
     }
	 

}