求助：一个jsp中"">...的传值问题，如何接收？？？谢谢各位帮帮

[iceline]

求助：一个jsp中有这样一个超链接：<a href="nw/register.jsp? titleId="<%=rst.getString("titleId")%>"">rst。getString（“title”）</a>，在register.jsp中如何接收titleId？ 用那个对象调用那个方法？？？谢谢各位帮帮忙◎◎◎

[daly1314]

request.getParamter("titleid")

[daxuanfeng]

同意，大家都是用的它呀。request.getParamter("titleid")

[mlovex]

request.getParamter("titleid")

楼下的注意保持队型

[YLENTER]

我就不好意思回答拉，哈哈！祝你成功！

[frhwxx]

简单问题看来大家一致性很高!
哈哈

[romeo00001]

request.getParamter("titleid")

[jFresH_MaN]

request.getParamter("titleid")

楼下的注意保持队型

[iceline]

不知为什么，打印是空值，我的文件如下，请各位看看，指点一下：这是index。jsp文件
<%
try
{

//Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();
//Connection con=java.sql.DriverManager.getConnection("jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=CityHuanWei","sa","821121");
Connection con=java.sql.DriverManager.getConnection("jdbc:odbc:CityHuanWei","sa","821121");

Statement stmt=con.createStatement();
ResultSet rst=stmt.executeQuery("SELECT titleId,title FROM titleInfo WHERE titleClass='1'");
while(rst.next())
{
String id=rst.getString(1);
String title=rst.getString(2);
System.out.println(id);
System.out.println(title);
%>
<tr>
<td><a href="nw/validateTitle.jsp? titleId= <%=id %>">
<%=title %>
</a>
</td>
</tr>
<%
}

rst.close();
stmt.close();
con.close();
}
catch(Exception e)
{
e.printStackTrace();
}

%>

[iceline]

在接收页面打印到空值，validateTitle.jsp：
<%
try
{
String titleId = request.getParameter("titleId");
//Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();
//Connection con=java.sql.DriverManager.getConnection("jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=CityHuanWei","sa","821121");
Connection con=java.sql.DriverManager.getConnection("jdbc:odbc:CityHuanWei","sa","821121");
PreparedStatement ps=null;
ResultSet rst=ps.executeQuery("SELECT context FROM titleInfo WHERE titleId=?");
ps.setString(1,titleId);
while(rst.next())
{
out.println("<tr>");
out.println("<td>"+rst.getString("context")+"</td>");
out.println("</tr>");
}
rst.close();
ps.close();
con.close();
}
catch(Exception e)
{
e.printStackTrace();
}

%>

[iceline]

请各位多帮帮我！！！

[frhwxx]

像这种问题就两种可能：
一、String id=rst.getString(1); id就没有取出来，本身就是个null
二、如果id不为空那肯定就没有传到下一个页面呗

[MYLiao]

你在validateTitle.jsp页面中测试一下看有没有接受到参数值：
<%
String titlevalue=new String();
titlevalue=request.getParameter("titleID");
out.println("titlevalue=" + titlevalue);
%>
然后再把值传到SQL语句，试试看

[iceline]

好的，谢谢，我试试

[frhwxx]

打印出什么是空值?是<%=id %>和<%=title %>吗?你问问题说明白撒!

[iceline]

在接收页面打印到空值，validateTitle.jsp：
System.out.println(titleId);

[jinannanhai79]

<a href="nw/register.jsp?titleId='<%=rst.getString("titleId")%>'">rst.getString("title")</a>

[julin365_nn]

我觉得rst.getString("titleId")中的titleId应该用大写吧？TITLEID

[iceline]

我试了，titlevalue=null ，根本没传过去。。。请各位帮帮我！！！index.jsp:
<%
try
{
String id = "1001";
String title = "你是谁？？？";
/* Class.forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();
Connection con=java.sql.DriverManager.getConnection("jdbc:odbc:CityHuanWei","sa","821121");

Statement stmt=con.createStatement();
ResultSet rst=stmt.executeQuery("SELECT titleId,title FROM titleInfo WHERE titleClass='1'");
while(rst.next())
{
String id=rst.getString(1);
String title=rst.getString(2);*/
out.println(id);
out.println(title);
%>

<tr>
<td><a href="ztx1.jsp? titleId=<%=id%>">
<%=title %>
</a>
</td>
</tr>

<%
/* }

rst.close();
stmt.close();
con.close();*/
}
catch(Exception e)
{
e.printStackTrace();
}

%>

[iceline]

validate.jsp:
<%
try
{

String titlevalue=new String();
titlevalue=request.getParameter("titleId");
out.println("titlevalue=" + titlevalue);

/*String titleId = request.getParameter("titleId");
System.out.print(titleId);
out.print(titleId);

out.println("<tr>");
out.println("<td>"+titleId+"</td>");
out.println("</tr>");*/

/* Class.forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();
Connection con=java.sql.DriverManager.getConnection("jdbc:odbc:CityHuanWei","sa","821121");
PreparedStatement ps = con.prepareStatement();
Statement stmt=con.createStatement();
ResultSet rst=stmt.executeQuery("SELECT title FROM titleInfo WHERE titleId=?");
ps.setString(1,titleId);
while(rst.next())
{
out.println("<tr>");
out.println("<td>"+rst.getString("titleId")+"</td>");
out.println("</tr>");
/*}
rst.close();
stmt.close();
con.close();*/
}
catch(Exception e)
{
e.printStackTrace();
}

%>

[xueqs]

<a href="ztx1.jsp? titleId=<%=id%>">
问号后面不要加空格