Jsp/Servlet

开发平台：
Java

majorEdit.jsp：源码内容
							<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
  <%
if(session.getAttribute("userid")== null || session.getAttribute("userid").equals(""))
{
  response.sendRedirect("index.jsp");
}
%>
<jsp:include flush="true" page="head.jsp"/><br />
<form name="form1" method="post" action="majorEditSave.jsp" onSubmit="return check();">
<%!
String majorname="",majorid="",depid="";
ResultSet rs=null,rs1=null;
Statement stmt=null;
 %>
<%
String driver = "sun.jdbc.odbc.JdbcOdbcDriver"; //驱动程序，见第十四章
String url="jdbc:odbc:stud";//数据库连接语句，见第十四章
String userID="sa",pwd="",sql="";
try{
  Class.forName(driver);//调入JDBC-ODBC桥的驱动程序
  Connection conn = DriverManager.getConnection(url,userID,pwd);//建立与数据的连接
  //request对象见第四章
  stmt = conn.createStatement();//建立Statement的实例，相当于创建一个查询分析器的运行环境
  sql = "select * from major where majorid='" + request.getParameter("majorId") + "'";
  rs1  = stmt.executeQuery(sql); //把查询结果放入ResultSet对象
  if(rs1.next()){
    majorid=rs1.getString("majorid");
    majorname=rs1.getString("majorname");
    depid=rs1.getString("depid");
  }
 }catch(Exception e){
  System.out.println(e.getMessage());
}
  %>
<input type="hidden" name="majorID" value="<%=majorid%>"/>
  <table width="500" height="104" border="1" align="center" cellpadding="3" cellspacing="1">
    <caption>
    修改专业资料
    </caption>
    <tr>
      <td height="50"><div align="right">所属分院：</div></td>
      <td><select name="depId" style="width:133px">
      <%
      String tempdepid="",depname="";
      try{
        sql = "select * from Department";
        rs  = stmt.executeQuery(sql); //把查询结果放入ResultSet对象
        while(rs.next())
        {
          tempdepid = rs.getString("depid");
          depname = rs.getString("depname");
          if(tempdepid.equals(depid)){
%>
<option value="<%=tempdepid%>" selected="selected"><%=depname%></option>
<%
          }else{
%>
<option value="<%=tempdepid%>"><%=depname%></option>
<%
          }
        }
      }catch(Exception e){}
      %>
      </select></td>
    </tr>
    <tr>
      <td width="301" height="50"><div align="right">专业名称：</div></td>
      <td width="446"><input name="majorName" type="text" id="majorName"  value="<%=majorname%>" maxlength="20"></td>
    </tr>
    <tr>
      <td colspan="2"><div align="center">
        <input type="submit" name="Submit" value="  保  存   ">
      </div></td>
    </tr>
  </table>
</form>
<jsp:include flush="true" page="bottom.jsp"/>
</body>
</html>
<script language="javascript">
function check()
{
	if(form1.majorName.value=="")
	{
		alert("请输入专业名称");
		form1.majorName.focus();
		return false;
	}
	return true;
}
</script>

						