Question

我有以下代码quiz.jsp：

  <form  action= "execute.jsp" method="post" >
    <table>
      <%
  try{
Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection conn = DriverManager.getConnection("jdbc:mysql....);
Statement st=conn.createStatement();
ResultSet rs=st.executeQuery("Select * from questions");
int i=1;

while(rs.next()){
    int in=rs.getInt(1);
%>

      <tr>
        <td>
         <%=i%><p id="test"><%=rs.getString("questions")%></p>
        </td>
      </tr>
   <tr id="two">
        <td>
         <input type="radio"  value=<%=rs.getString("answerone")%>  name="radio<%=in%>" id="a"/><%=rs.getString("answerone")%>
          <input  type="radio"   value=<%=rs.getString("answertwo")%> name="radio<%=in%>" id="b"/><%=rs.getString("answertwo")%>
          <input   type="radio"   value=<%=rs.getString("answerthree")%> name="radio<%=in%>" id="c"/><%=rs.getString("answerthree")%>
          <input  type="radio" value=<%=rs.getString("answerfour")%> name="radio<%=in%>" id="d"/><%=rs.getString("answerfour")%>
        </td>

       </tr>
      <%
      i++;
  }
}catch(Exception ex){
    out.print("Exception Caught"+ex);
}
%>
    </table>
    <div id="buttons">

    <input type="submit" value="submit"></input>

  </div>
  </form>
  </div>

execute.jsp

<%!
int calculatePercentage(int a,int b)
{
 int result=(a/b) * 100;
 return result;
}
%>
 <%
  try{
        Class.forName("com.mysql.jdbc.Driver").newInstance();
        Connection conn = DriverManager.getConnection("jdbc:mysql:......);
        Statement st=conn.createStatement();
        ResultSet rs=st.executeQuery("Select * from questions");
        int j=0;
        String[] correct=new String[4];
        while(rs.next()){
                j++;
                correct[j]=rs.getString("iscorrect");

                //out.println(correct[j]);
                 }
        String check[]=new String[4];
        for(int x=1; x<4; x++){
            check[x]=request.getParameter("radio"+x);
                //out.print(check[x]);
        }
        int count=0;
         for(int a=0;a<correct.length;a++){
             if((correct[a]!=null)&&(check[a]!=null)){
                 if(correct[a].equals(check[a])){
                     out.println(correct[a]);
                     out.println(check[a]);
                        count++;
                    }
               }
             }
        int max=3;
         int score=calculatePercentage(count,max);
        out.println("Your "+score+" answers are correct");
        // out.println("Your percentage scored is: "+score +"%");

    }catch(Exception ex){
            out.print("Exception Caught"+ex);
        }


%>

问题：

我遇到的问题是，如果所有答案都是正确的，那么测试分数是准确的（100％）如果没有选择其中一个无线电如果一个或多个错误

结果为0％。我看起来计数没有正确传递值或方法执行不好。虽然如果我执行out.print（count），它会显示正确的计数。

请建议。

由于

JSP测验过程没有给我正确的百分比评分

0 个答案: