话不多说,直接上例子
insert
复制代码 代码如下:
String sql="insert into allorder values('" + orderid + "','" + bookid +"','" + amount + "','" + username + "')";
int result=stmt.executeUpdate(sql);
if(result==1)
response.sendRedirect("index.jsp");
else
response.sendRedirect("detail.jsp");
delete
复制代码 代码如下:
String condition="delete from allorder where id='"+ orderid+ "'";
int result=stmt.executeUpdate(condition);
if(result==1)
response.sendRedirect("index.jsp");
else
out.println("shopCar.jsp");
update
复制代码 代码如下:
与delete,insert差不多
select
[code]
<%
while (rs.next()){
String amount=rs.getString("amount");
String orderid=rs.getString("id");
String bookname=rs.getString("name");
String price=rs.getString("price");
String picture=rs.getString("pic");
//out.println("\tshuliang"+amount);
%>
<%=orderid %> <%=picture %> <%=bookname %> <%=price %> <%=amount %>
<%
}
// 关闭连接
stmt.close();// 关闭命令对象连接
con.close();// 关闭数据库连接
} catch (SQLException e) {
e.printStackTrace();
out.println("数据库连接错误");
System.exit(0);
}
//数据库连接完成
%>
insert
复制代码 代码如下:
String sql="insert into allorder values('" + orderid + "','" + bookid +"','" + amount + "','" + username + "')";
int result=stmt.executeUpdate(sql);
if(result==1)
response.sendRedirect("index.jsp");
else
response.sendRedirect("detail.jsp");
delete
复制代码 代码如下:
String condition="delete from allorder where id='"+ orderid+ "'";
int result=stmt.executeUpdate(condition);
if(result==1)
response.sendRedirect("index.jsp");
else
out.println("shopCar.jsp");
update
复制代码 代码如下:
与delete,insert差不多
select
[code]
<%
while (rs.next()){
String amount=rs.getString("amount");
String orderid=rs.getString("id");
String bookname=rs.getString("name");
String price=rs.getString("price");
String picture=rs.getString("pic");
//out.println("\tshuliang"+amount);
%>
<%
}
// 关闭连接
stmt.close();// 关闭命令对象连接
con.close();// 关闭数据库连接
} catch (SQLException e) {
e.printStackTrace();
out.println("数据库连接错误");
System.exit(0);
}
//数据库连接完成
%>
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