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how to display data from database according to entered value in search field
1 Answer(s)      2 years and a month ago
Posted in : JavaScript Questions


this is my search.jsp file

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql"%>

<%@page import="java.sql.*"%>


<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Healthy Preggers</title>
<meta name="keywords" content="css templates, healthy living, diet, nutrition, fitness, web design" />
<meta name="description" content="Healthy Living - free CSS template provided by templatemo.com" />
<link href="css/templatemo_style.css" rel="stylesheet" type="text/css" />
<style type="text/css">
<!--
.style1 {
    color: #999999
}
.style2 {color: #BF3E3E}
-->
</style>
</head>
<body>
<%@include file = "header.jsp" %>
<%@include file = "menu.jsp" %>


<%   Class.forName("oracle.jdbc.OracleDriver");
     Connection con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl", "health", "health"); 
       %> 
<body>

<html>
<head>
</head>
<body>
<br><br><br><br><br><br>
<form method="post" name="form1" action="viewsearch.jsp">
<table border="1" width="300" align="center" bgcolor="FFA3B3">
<tr><td colspan=2 style="font-size:12pt;color:#00000;" align="center">
<h3>Enter BMI Value</h3></td></tr>
<tr><td ><b>Enter BMI </b></td>
<td>: <input  type="text" name="bmi_value" id="BMI_VALUE">
</td></tr>

<tr><td colspan=2 align="center">
<input  type="submit" name="submit" value="Search">  
                        <input type="reset" value="Reset" name="Reset" /></td></tr>
</table>
</form>


</body>
</html>

</table>
</form>
</body>
</html>
<br><br><br>

<div id="templatemo_footer">
    Copyright  2012| 
    Designed by:Fara Zati Aina</a> | 
    For: CSC 444</div> 
</center></body>
</html>



this is my searchview.jsp file where it does the process

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql"%>

<%@page import="java.sql.*"%>


<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Healthy Preggers</title>
<meta name="keywords" content="css templates, healthy living, diet, nutrition, fitness, web design" />
<meta name="description" content="Healthy Living - free CSS template provided by templatemo.com" />
<link href="css/templatemo_style.css" rel="stylesheet" type="text/css" />
<style type="text/css">
<!--
.style1 {
    color: #999999
}
.style2 {color: #BF3E3E}
-->
</style>
</head>
<body>
<%@include file = "header.jsp" %>
<%@include file = "menu.jsp" %>


<%   Class.forName("oracle.jdbc.OracleDriver");
     Connection con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl", "health", "health"); 
       %> 
<body>

<html>
<head>
</head>
<body>
<br><br><br><br><br><br>
<form method="post" name="form1" action="viewsearch.jsp">
<table border="1" width="300" align="center" bgcolor="FFA3B3">
<tr><td colspan=2 style="font-size:12pt;color:#00000;" align="center">
<h3>Enter BMI Value</h3></td></tr>
<tr><td ><b>Enter BMI </b></td>
<td>: <input  type="text" name="bmi_value" id="BMI_VALUE">
</td></tr>

<tr><td colspan=2 align="center">
<input  type="submit" name="submit" value="Search">  
                        <input type="reset" value="Reset" name="Reset" /></td></tr>
</table>
</form>


</body>
</html>

</table>
</form>
</body>
</html>
<br><br><br>

<div id="templatemo_footer">
    Copyright  2012| 
    Designed by:Fara Zati Aina</a> | 
    For: CSC 444</div> 
</center></body>
</html>



this is my searchview2.jsp file where it display the result


<%-- 
    Document   : viewSearch2
    Created on : Jun 18, 2012, 8:21:02 PM
    Author     : Asus
--%>


<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql"%>

<%@page import="java.sql.*"%>


<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Healthy Preggers</title>
<meta name="keywords" content="css templates, healthy living, diet, nutrition, fitness, web design" />
<meta name="description" content="Healthy Living - free CSS template provided by templatemo.com" />
<link href="css/templatemo_style.css" rel="stylesheet" type="text/css" />
<style type="text/css">
<!--
.style1 {
    color: #999999
}
.style2 {color: #BF3E3E}
-->
</style>
</head>
<body>
<%@include file = "header.jsp" %>
<%@include file = "menu.jsp" %>


<%   Class.forName("oracle.jdbc.OracleDriver");
     Connection con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl", "health", "health"); 
       %> 
<body>
<html>
    <body>
<h1 align="left">VIEW SEARCH</h1>



                <%
                 Statement st=con.createStatement();
                 ResultSet rs3=st.executeQuery("SELECT M.MEMBER_ID, M.FNAME,M.LNAME,M.AGE,B.HEIGHT,B.WEIGHT, B.BMI_VALUE FROM MEMBER M , BMI B   WHERE M.MEMBER_ID=B.MEMBER_ID");
                %>
                    <table  align="center"  border="1">

                    <tr  bgcolor="ACFA58"> 
                           <th class="listingContent" witdth="10">No</th>
                          <th class="listingContent" width="100">ID</th>
                          <th class="listingContent" width="1000">FIRST NAME</th>
                          <th class="listingContent" width="1000">LASTNAME</th>
                          <th class="listingContent" width="1000">AGE</th>
                          <th class="listingContent" width="1000">HEIGHT</th>
                          <th class="listingContent" width="1000">WEIGHT</th>
                          <th class="listingContent" width="300">BMI VALUE</th>

                    </tr>


             <% String data=request.getParameter("bmi_value"); 
             if(data != "bmi_value"){ %>

             <script language="javascript">
             alert("There is no data.");
             window.location.href = "searchBMI.jsp";
             </script> 
            <% } 
          else{

    %>  <%
            int y= 1;
            while(rs3.next())
              { %>

                <tr bgcolor="D0F5A9"  onclick="form1">
                <td class="listingContent" align="center"><%= y%></td>
                <td class="listingContent" width="10" align="center"><%= rs3.getString("member_id") %></td>
               <td class="listingContent" width="10" align="center"><%= rs3.getString("fname") %></td>
               <td class="listingContent" width="10" align="center"><%= rs3.getString("lname")%></td>
               <td class="listingContent" width="10" align="center"><%= rs3.getString("age")%></td>
               <td class="listingContent" width="10" align="center"><%= rs3.getString("height")%></td>
               <td class="listingContent" width="10" align="center"><%= rs3.getString("weight")%></td>
               <td class="listingContent" width="10" align="center"><%= rs3.getString("bmi_value")%></td>
                </tr> 

                <% 
                y++;
                }%>
                   } </table>

    </body>
</html>


i suppose to get this table, but it shows wrong value .i want it to be the same with what i have entered in the search field. let say i entered 17, so i want the data of user who have 17 as their bmi value to appear. help me please. i don't know which line i have to add or change my code. thank you :)

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View Answers

June 20, 2012 at 4:00 PM


Here is a simple JSP search application where user is allowed to enter BMI value and display the results accordingly.

1)search.jsp:

<html>
<head>
</head>
<body>
<br><br><br><br><br><br>
<form method="post" name="frm" action="..//search">
<table border="0" width="300" align="center" bgcolor="#CDFFFF">
<tr><td colspan=2 style="font-size:12pt;color:#00000;" align="center">
<h3>Search Form</h3></td></tr>
<tr><td ><b>Enter BMI</b></td>
<td>: <input type="text" name="bmi" id="bmi">
</td></tr>
<tr><td colspan=2 align="center">
<input type="submit" name="submit" value="Search"></td></tr>
</table>
</form>
</body>
</html>

2) Search.java:

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.sql.*;
import java.sql.*;
import java.util.*;

public class Search extends HttpServlet{

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException,IOException{
response.setContentType("text/html");
PrintWriter out = response.getWriter();

System.out.println("MySQL Connect Example.");
Connection conn = null;
String url = "jdbc:mysql://localhost:3306/";
String dbName = "register";
String driver = "com.mysql.jdbc.Driver";
String userName = "root";
String password = "root";


Statement st;
try {
Class.forName(driver).newInstance();
conn = DriverManager.getConnection(url+dbName,userName,password);
System.out.println("Connected to the database");
String bmi = request.getParameter("bmi");
String query = "select * from item where bmi='"+bmi+"'";
st = conn.createStatement();
ResultSet rs = st.executeQuery(query);
out.println("<table border='1'><tr><th>Member ID</th><th>First Name</th><th>Last Name</th><th>Age</th><th>BMI Value</th></tr>");
while(rs.next()){

out.println("<tr><td>"+rs.getString(1)+"</td><td>"+rs.getString(2)+"</td><td>"+rs.getString(3)+"</td><td>"+rs.getString(4)+"</td><td>"+rs.getString(5)+"</td></tr>");
}
out.println("</table>");
conn.close();
System.out.println("Disconnected from database");
} catch (Exception e) {
e.printStackTrace();
}
}
}

3)web.xml:

<servlet-name>Search</servlet-name>
<servlet-class>Search</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Search</servlet-name>
<url-pattern>/search</url-pattern>
</servlet-mapping>


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