Pretty simple assignment here and I thought I had everything correct but apparently not :(
Basically all this jsp needs to do is display distinct values from a DB in a drop down and based on the selected value when the user presses the submit button they will be directed to another jsp where in a table it will display other values that correspond to it. I have emailed my professor and he is reluctant to responding. Any help is much appreciated! Here is my code and thanks for your time and help!
try
{
String query3 = "SELECT DISTINCT CATEGORY FROM POEMS;";
ResultSet rs3 = stmt3.executeQuery(query3);
rs3.next();
%>
<FORM ACTION="purcell6b.jsp" METHOD="POST">
<%
out.println("<SELECT name='category'>");
while (rs3.next())
{
String category = rs3.getString("CATEGORY");
out.println("<OPTION value='" + category + "'>" + category);
out.println("</OPTION>");
}
out.println("</SELECT>");
%>
<input type = submit value="Submit">
</form>
<%
}
catch (Exception e)
{
e.printStackTrace();
}
Second JSP:
String query = "select POEMID, DESCRIPTION, TITLE, POETID " + "from POEMS WHERE CATEGORY like ?;";
try
{
stmt.setString(1, input1);
ResultSet rs = stmt.executeQuery();
<%
while (rs.next())
{
String poemID = rs.getString("POEMID");
String title = rs.getString("TITLE");
String description = rs.getString("DESCRCIPTION");
String catetgory = rs.getString("CATEGORY");
String poetID = rs.getString("POETID");
%>
<TR>
<TD><input type='radio' name='poemID' value='<%=poemID%>'> </TD>
<TD><%= poemID %></TD>
<TD><%= title %></TD>
<TD><%= description %></TD>
<TD><%= catetgory %></TD>
<TD><%= poetID %></TD>
</TR>
<%
}
%>
</TABLE>
</FORM>
<% } catch (Exception e) { e.printStackTrace();
}
I know how to insert into a table its just the passing of the parameter that I'm confused on.
Thanks! Corey
The first answer is right and you should check your Column names and they must be consistent with the setting names. your sql:String query = "select POEMID, DESCRIPTION , TITLE, POETID " + "from POEMS WHERE CATEGORY like ?;"; your assignment statement:rs.getString(" DESCRCIPTION ");
确保您正确命名列名,或正确引用数据库表中的内容
you need to verify en mysql
desc poems;
and verify your code if the columns in the database and the program have the same name
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