Spring Boot with Mongo DB
In this tutorial, we will be learning how to integrate a spring boot application to Mongo DB cloud using your Mongo DB Atlas account.
Prerequisite
You must have a Mongo DB Atlas account. If not, create one using the below link.
https://www.mongodb.com/cloud/atlas/register
pom.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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>3.3.2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.sks</groupId>
<artifactId>boot-mongodb-connectivity</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>boot-mongodb-connectivity</name>
<description>Demo project for Spring Boot</description>
<url/>
<licenses>
<license/>
</licenses>
<developers>
<developer/>
</developers>
<scm>
<connection/>
<developerConnection/>
<tag/>
<url/>
</scm>
<properties>
<java.version>17</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
application.properties file
Please note that your password shouldn’t contain ‘@’. If it is there, you can use %40 in place of @ in your password. E.g. if your password is abc@123, write it like abc%40123
spring.data.mongodb.uri=mongodb+srv://saras:<password>@sarascluster.jwvsbo8.mongodb.net/?retryWrites=true&w=majority&appName=sarascluster
spring.data.mongodb.database=wipro_db
The above property can be found on your Mongo DB Atlas account as shown below
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application.properties file for local mongo db
If you have mongo database running on your local machine, you can use below properties.
#Local MongoDB
spring.data.mongodb.authentication-database=admin
spring.data.mongodb.username=root
spring.data.mongodb.password=pwd
spring.data.mongodb.database=my_db
spring.data.mongodb.port=27017
spring.data.mongodb.host=localhost
Student.java
package com.sks;
import java.util.Date;
import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;
@Document
public class Student {
@Id
private String id;
private String name;
private Date creationDate = new Date();
//getter and setter methods
//constructors
//toString method
}
StudentRepository.java
package com.sks;
import org.springframework.data.mongodb.repository.MongoRepository;
import org.springframework.stereotype.Repository;
@Repository
public interface StudentRepository extends MongoRepository<Student, Integer>{
}
StudentController.java
package com.sks;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping(value = "/student")
public class StudentController {
@Autowired
private StudentRepository studentRepository;
@RequestMapping(value = "/all", method = RequestMethod.GET)
public List<Student> getAllStudent() {
System.out.println("Fetching students data");
return studentRepository.findAll();
}
@RequestMapping(value = "/create", method = RequestMethod.POST)
public Student addNewStudent(@RequestBody Student student) {
return studentRepository.save(student);
}
}
Retrieve all the students information
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Create a student
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