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Spring MVC - Sample Project For Finding Doctors Online with MySQL

Last Updated : 08 Nov, 2022
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Spring MVC Framework follows the Model-View-Controller design pattern. It is used to develop web applications. It works around DispatcherServlet. DispatcherServlet handles all the HTTP requests and responses. With MySQL as the backend, we can store all doctor details and by using Spring MVC functionality we can get the details of doctors as the online pattern. Let us see it as a maven project here.

MySQL Queries:

As we are getting the details via MySQL, let us have some data for it

DROP DATABASE IF EXISTS geeksforgeeks;
CREATE DATABASE geeksforgeeks;
USE geeksforgeeks;

DROP TABLE geeksforgeeks.DoctorsDetails;

CREATE TABLE DoctorsDetails (
  id int(6) unsigned NOT NULL,
  doctorName varchar(50) NOT NULL,
  doctorRegistrationNumber varchar(10) NOT NULL,
  qualification varchar(30) NOT NULL,
  gender varchar(10) DEFAULT NULL,
  PRIMARY KEY (id)
) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=latin1;

INSERT INTO geeksforgeeks.DoctorsDetails
(id,doctorName, doctorRegistrationNumber, qualification,gender) VALUES
(1,'doctorA','123-456','MDDCH','Female');

INSERT INTO geeksforgeeks.DoctorsDetails
(id,doctorName, doctorRegistrationNumber, qualification,gender) VALUES
(1,'doctorB','111-222','MSNeuro','Male');

INSERT INTO geeksforgeeks.DoctorsDetails
(id,doctorName, doctorRegistrationNumber, qualification,gender) VALUES
(1,'doctorC','222-444','MDGynae','Female');

INSERT INTO geeksforgeeks.DoctorsDetails
(id,doctorName, doctorRegistrationNumber, qualification,gender) VALUES
(1,'doctorD','199-998','MSNephro','Male');

INSERT INTO geeksforgeeks.DoctorsDetails
(id,doctorName, doctorRegistrationNumber, qualification,gender) VALUES
(1,'doctorE','444-666','MDCardio','Female');

SELECT * FROM geeksforgeeks.DoctorsDetails;

--If required, at last point of time we can truncate table
truncate table geeksforgeeks.DoctorsDetails;

DBData Output:

DBData Output
 

Project Structure:

Project Structure
 

This is going to get executed as a maven project

pom.xml

XML 
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" 
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0   
                             http://maven.apache.org/maven-v4_0_0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.doctors</groupId>
   <artifactId>SpringMVCFindDoctorsOnline</artifactId>
   <packaging>war</packaging>
   <properties>
      <maven.compiler.source>1.8</maven.compiler.source>
      <maven.compiler.target>1.8</maven.compiler.target>
   </properties>
   <version>0.0.1-SNAPSHOT</version>
   <name>SpringMVCFindDoctorsOnline Maven Webapp</name>
   <url>http://maven.apache.org</url>
   <dependencies>
      <dependency>
         <groupId>junit</groupId>
         <artifactId>junit</artifactId>
         <version>4.12</version>
         <scope>test</scope>
      </dependency>
      <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
      <dependency>
         <groupId>org.mockito</groupId>
         <artifactId>mockito-all</artifactId>
         <version>1.9.5</version>
         <scope>test</scope>
      </dependency>
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-webmvc</artifactId>
         <version>5.1.1.RELEASE</version>
      </dependency>
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-context</artifactId>
         <version>5.1.1.RELEASE</version>
      </dependency>
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-test</artifactId>
         <version>5.1.1.RELEASE</version>
         <scope>test</scope>
      </dependency>
      <!-- https://mvnrepository.com/artifact/org.apache.tomcat/tomcat-jasper -->
      <dependency>
         <groupId>org.apache.tomcat</groupId>
         <artifactId>tomcat-jasper</artifactId>
         <version>9.0.12</version>
      </dependency>
      <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
      <dependency>
         <groupId>javax.servlet</groupId>
         <artifactId>servlet-api</artifactId>
         <version>3.0-alpha-1</version>
      </dependency>
      <!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
      <dependency>
         <groupId>javax.servlet</groupId>
         <artifactId>jstl</artifactId>
         <version>1.2</version>
      </dependency>
      <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
      <dependency>
         <groupId>mysql</groupId>
         <artifactId>mysql-connector-java</artifactId>
         <version>8.0.11</version>
      </dependency>
      <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-jdbc</artifactId>
         <version>5.1.1.RELEASE</version>
      </dependency>
   </dependencies>
   <build>
      <finalName>SpringMVCFindDoctorsOnline</finalName>
      <sourceDirectory>src/main/java</sourceDirectory>
      <plugins>
         <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>3.0.0-M3</version>
            <configuration>
               <testFailureIgnore>true</testFailureIgnore>
               <shutdown>kill</shutdown>
               <!-- Use it if required-->
            </configuration>
         </plugin>
         <!-- This should be added to overcome Could not initialize 
              class org.apache.maven.plugin.war.util.WebappStructureSerializer -->
         <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-war-plugin</artifactId>
            <version>3.3.2</version>
         </plugin>
      </plugins>
   </build>
</project>

We have to create a bean file and its structure should match with MySQL geeksforgeeks.DoctorsDetails

Doctor.java

Java 
public class Doctor {
  
    private int id;
    private String doctorName;    
    private String doctorRegistrationNumber;    
    private String gender;
    private String qualification;

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getDoctorName() {
        return doctorName;
    }

    public void setDoctorName(String doctorName) {
        this.doctorName = doctorName;
    }

    public String getDoctorRegistrationNumber() {
        return doctorRegistrationNumber;
    }

    public void setDoctorRegistrationNumber(String doctorRegistrationNumber) {
        this.doctorRegistrationNumber = doctorRegistrationNumber;
    }

    public String getQualification() {
        return qualification;
    }

    public void setQualification(String qualification) {
        this.qualification = qualification;
    }
  
}

Let us come to controller java

DoctorController.java

Java 
import java.sql.SQLException;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.SessionAttributes;
import org.springframework.web.servlet.ModelAndView;

import com.doctors.beans.Doctor;
import com.doctors.dao.DoctorDao;

@Controller
@SessionAttributes("doctor")
public class DoctorController {
    // @Autowired
    // will inject dao from xml file
    DoctorDao dao;

    @Autowired
    public DoctorController(DoctorDao dao) {
        this.dao = dao;
    }
    
    @ModelAttribute("doctor")
    public Doctor getDoctor() {
        return new Doctor();
    }

    // for searchform
    @RequestMapping("/doctorsearchform")
    public String searchform(Model m) {
        m.addAttribute("command", new Doctor());
        return "doctorsearchform";
    }

    // It provides a facility to check doctors online
    @RequestMapping(value = "/checkDoctorsOnline", method = RequestMethod.POST)
    public ModelAndView calculateAmountForConsumedUnits(@ModelAttribute("doctor") Doctor doctor) {

        ModelAndView mav = null;
        Doctor doctor1 = null;
        try {
            if (doctor.getDoctorName() != null && doctor.getDoctorName() != "") {
                doctor1 = dao.getDoctorsByName(doctor.getDoctorName());
            }
            if (doctor.getDoctorRegistrationNumber() != null && doctor.getDoctorRegistrationNumber() != "") {
                doctor1 = dao.getDoctorsByRegistrationNumber(doctor.getDoctorRegistrationNumber());
            }
            mav = new ModelAndView("welcome");
            if (null != doctor1) {
                System.out.println(doctor1.getId() + "..." + doctor1.getDoctorName() + ".." + doctor1.getDoctorRegistrationNumber()
                + doctor1.getGender());
                boolean isAvailable = false;
                
                mav.addObject("DoctorName", doctor1.getDoctorName());
                mav.addObject("RegistrationNumber", doctor1.getDoctorRegistrationNumber());
                mav.addObject("Gender", doctor1.getGender());
                mav.addObject("Qualification", doctor1.getQualification());
            }
        else {
            mav.addObject("DoctorName", doctor1.getDoctorName());
            mav.addObject("RegistrationNumber", "Not available Online");
        }
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        return mav;
    }

}

DAO class

DoctorDao.java

Java 
import java.sql.SQLException;

import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;

import com.doctors.beans.Doctor;

public class DoctorDao {
    JdbcTemplate template;

    public void setTemplate(JdbcTemplate template) {
        this.template = template;
    }

    public Doctor getDoctorsByName(String doctorName) throws SQLException {
        String sql = "select * from doctorsdetails where doctorname=?";
        return template.queryForObject(sql, new Object[] {doctorName},
                new BeanPropertyRowMapper<Doctor>(Doctor.class));
    }
    
    public Doctor getDoctorsByRegistrationNumber(String registrationNumber) throws SQLException {
        String sql = "select * from doctorsdetails where doctorRegistrationNumber=?";
        return template.queryForObject(sql, new Object[] {registrationNumber},
                new BeanPropertyRowMapper<Doctor>(Doctor.class));
    }
    
    public Doctor getDoctorsById(int id) throws SQLException {
        String sql = "select * from doctorsdetails where id =?";
        return template.queryForObject(sql, new Object[] { id },
                new BeanPropertyRowMapper<Doctor>(Doctor.class));
    }
    
    public Doctor getDoctorsByGender(String gender) throws SQLException {
        String sql = "select * from doctorsdetails where gender=?";
        return template.queryForObject(sql, new Object[] {gender},
                new BeanPropertyRowMapper<Doctor>(Doctor.class));
    }
    
}

spring-servlet.xml

XML 
<?xml version="1.0" encoding="UTF-8"?>  
<beans xmlns="http://www.springframework.org/schema/beans"  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   
    xmlns:context="http://www.springframework.org/schema/context"  
    xmlns:mvc="http://www.springframework.org/schema/mvc"  
    xsi:schemaLocation="  
        http://www.springframework.org/schema/beans  
        http://www.springframework.org/schema/beans/spring-beans.xsd  
        http://www.springframework.org/schema/context  
        http://www.springframework.org/schema/context/spring-context.xsd  
        http://www.springframework.org/schema/mvc  
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">  
    <context:component-scan base-package="com.SpringMVCFindDoctorsOnline.controllers"></context:component-scan>    

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">    
        <property name="prefix" value="/WEB-INF/jsp/"></property>    
        <property name="suffix" value=".jsp"></property>    
    </bean>    

    <bean id="ds" class="org.springframework.jdbc.datasource.DriverManagerDataSource">    
        <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>    
        <property name="url" value="jdbc:mysql://localhost:3306/geeksforgeeks?serverTimezone=UTC"></property>
        <property name="username" value="root"></property>    
        <property name="password" value="admin"></property>    
    </bean>    

    <bean id="jt" class="org.springframework.jdbc.core.JdbcTemplate">    
        <property name="dataSource" ref="ds"></property>    
    </bean>    

    <bean id="dao" class="com.doctors.dao.DoctorDao">    
        <property name="template" ref="jt"></property>    
    </bean>       

</beans>

JSP Pages

indexPage.jsp

HTML 
<center><B><a href="doctorsearchform">Find Doctors Online</a></B></center>

We would be getting a page like below

 

On click of the "Find Doctors Online" link, we can get the below page

doctorsearchform.jsp

HTML 
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>  
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>  
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1" %>
<!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>Find Doctors Online</title>
   </head>
   <body>
      <h1>Find Doctors Online</h1>
      <form:form  method="post" action="/SpringMVCFindDoctorsOnline/checkDoctorsOnline"  >
         <table >
            <tr>
               <td>Doctor Name : </td>
               <td>
                  <form:input path="doctorName"/>
               </td>
            </tr>
            <tr>
               <td>  (Or) </td>
            </tr>
            <tr>
               <td>Registration Number : </td>
               <td>
                  <form:input path="doctorRegistrationNumber"/>
               </td>
            </tr>
            <tr>
               <td> </td>
               <td><input type="submit" value="Check Doctors Online" /></td>
            </tr>
         </table>
      </form:form>
   </body>
</html>

Output:

 

Via Doctor Name/Registration Number, we can check. As "doctorA" is given , it will use "getDoctorsByName" and returns back the doctor details

 

Via Registration Number:

 

Similarly, we can check doctor details easily via the above ways.


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