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Mysql SOUNDS LIKE Example Using Java Servlet

Posted in : Java Posted on : September 30, 2011 at 8:07 PM Comments : [ 0 ]

In this tutorial you will learn how to use sounds like in mysql with java servlet.

Mysql SOUNDS LIKE Example Using Java Servlet

In this tutorial you will learn how to use sounds like in mysql with java servlet.

In MySql, SOUNDS LIKE returns all the similar sound pronunced words after comparing them with the specified string using soundex('str') function like soundex('str') = soundex('str').

Syntax :

sounds like 'string'

Here "string" is English letters word which pronunciation sound is to be matched with other words

Now, since I have to use this function in java servlet program, therefore I have created a java servlet class named MysqlSoundsLikeServlet which extends the HttpServlet class. In the body of class I overridden the method doGet() and created an objects of HttpServletRequest and HttpServletResponse into its parameter. Inside the doGet() method first I set the mime type that in which format the browser will show the output. In the next line I used the getWriter() method of ServletResponse interface with the object of HttpServletResponse. HttpServletResponse interface extends this method from the ServletResponse. In Next step I am taking inputs using the getParameter() method of ServletRequest with the object of HttpServletRequest. In continue we have to establish a connection between java code and database system. So, since I am using Mysql in the example given below therefore, I am loading the driver of mysql and make a connection by using the getConnection() method of DriverManager class. It returns a Connection. Further I created a table named 'employee' in the database 'data' and passed the query in my java code "SELECT * FROM employee WHERE name SOUNDS LIKE "+"'"+str+"'"; (Here 'str' is a variable that stores the value given by the user in their respective textfields.) into the parameter of prepareStatement() method of Connection interface which gives an object of PreparedStatement interface. In the next line I used the executeQuery() method of PreparedStatement interface which returns a ResultSet object that holds the result of query. At last I have extracted the result from the ResultSet object.

Example :

soundsLike.html

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>SOUNDS LIKE</title>
</head>
<body>
<form action="MysqlSoundsLikeServlet" method="get">
<table>
<tr>
<td>Enter a String </td>
<td><input type="text" name="text1"/></td>
</tr>
<tr>
<td></td>
<td><input type="submit" value="submit"/></td>
</tr>
</table>
</form>
</body>
</html>

MysqlSoundsLikeServlet.java

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

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

String str = request.getParameter("text1");

String className = "com.mysql.jdbc.Driver";
String url = "jdbc:mysql://192.168.10.13/data";
String user = "root";
String password = "root";

Connection con;
PreparedStatement ps;
ResultSet rs;

try {
Class.forName(className);
con = DriverManager.getConnection(url, user, password);

String sql = "SELECT * FROM employee WHERE name SOUNDS LIKE "+"'"+str+"'";
ps = con.prepareStatement(sql);
rs = ps.executeQuery();

out.println("<html>");
out.println("<table width=50%>");
out.println("<tr><td width=10%>Id</td>" );
out.println("<td width=15%>Name</td>");
out.println("<td width=25%>Department</td>");
out.println("<td width=10%>Salary</td>");
out.println("<td width=25%>DepartmentId</td>");
out.println("</table>");
out.println("</html>");

while (rs.next()) {
String id = rs.getString(1);
String name= rs.getString(2);
String dept = rs.getString(3);
String sal = rs.getString(4);
String deptId = rs.getString(5);

out.println("<html>");
out.println("<form>");
out.println("<table width= 50%>");
out.println("<tr><td width=10%>"+id+"</td>");
out.println("<td width=15%>"+name+"</td>");
out.println("<td width=25%>"+dept+"</td>");
out.println("<td width=10%>"+sal+"</td>");
out.println("<td width=25%>"+deptId+"</td>");
out.println("</tr>");
out.println("</table>");
out.println("</form>");
out.println("</html>");
} 
} catch (SQLException sx) {
out.println(sx);
} catch (ClassNotFoundException cx) {
out.println(cx);
}
}
}

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>mysqlStringFunction</display-name>
<servlet>
<servlet-name>MysqlSoundsLikeServlet</servlet-name>
<servlet-class>MysqlSoundsLikeServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>MysqlSoundsLikeServlet</servlet-name>
<url-pattern>/MysqlSoundsLikeServlet</url-pattern>
</servlet-mapping>

</web-app>

Output

1. employee table