questiondel.jsp

提供了许多JSP实用案例, 对于许多项目有实践性的指导作用

<%@page contentType="text/html;charset=GBK"%>
<%@page import="java.sql.*" errorPage="/public/error.jsp"%>
<%@ include file="/public/checkvalidadmin.jsp"%>
<%@ include file="/public/checkvalidadmin8.jsp"%>
<jsp:useBean id="conn" scope="page" class="test.ConnOracle"/>
<%!
String questionid;
ResultSet rs = null;

String sql = "";
int result = 0;
String currpage = "1";
%>

<%
questionid = request.getParameter("id");
currpage   = request.getParameter("Page");

// 避免用户直接在浏览器地址栏输入页面地址所产生的Exception
if(questionid==null || questionid.equals("")) {
    out.println("<center>");
	out.println("请进行合法操作！");
	out.println("</center>");
	return;
}

try{
	sql  = "select * from test_question_lib where ";
	sql += " questionid=" + questionid;
	rs = conn.executeQuery( sql );

	if(!rs.next()) {
		out.println("<center>");
		out.println("数据库没有代号为" + questionid + "的试题信息！<br>");
		out.println("单击这里<a href=javascript:history.back()>返回</a><br>");
		out.println("</center>");
	} else {
		sql = "delete from test_question_lib ";
		sql+= " where questionid=" + questionid;
		result = conn.executeUpdate( sql );
		if(result !=1 ) {
			out.println("<center>");
			out.println("试题信息删除失败！<br><br>");
			out.println("请将下列信息告知管理员<br><br>");
			out.println("单击这里<a href=javascript:history.back()>返回</a><br>");
			out.println("</center>");
		}
	}
}catch(Exception ee) {
	out.println("<center>");
	out.println("试题信息删除失败！<br><br>");
	out.println("请将下列信息告知管理员<br><br>");
	out.println(ee.toString() + "<br><br>");
	out.println("单击这里<a href=javascript:history.back()>返回</a><br>");
	out.println("</center>");
}
%>
<jsp:forward page="questionmanager.jsp">
   <jsp:param name="Page" value="<%=currpage%>"/>
</jsp:forward>
</center>
</Body>

</html>