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Spring Data + MongoDB + REST Shell Integration

May 19, 2014 //  by Amr Mohammed//  Leave a Comment

This tutorial guides you through an example for understanding the integration between Spring Data, Spring REST and MongoDB. As you are going to use the rest-shell for achieving different operations against database. Entities will be persisted into MongoDB in the form of which an outer entity will save a reference to the inner one. Unlike the most of the examples that are published in previous tutorials here. Also, you’d see the integrating of Spring Boot for initializing of an embedded Apache Tomcat.

Also read:

  • Spring Roo + Spring Data JPA Repositories + Eclipse Integration
  • Spring Data JPA + Querydsl
  • Spring Data + MongoDB 
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1. Tools Required

The required platforms and environments for this tutorial:

  • JDK 1.7.
  • Maven 3.2.1.
  • Eclipse IDE Kepler 4.3.
  • Spring Data
  • MongoDB

2. Java Beans (Entities)

Address and Employees entities will be used for defining the business domain.

Address.java

package net.javabeat.springdata.data;

import javax.persistence.Id;

import org.springframework.data.mongodb.core.mapping.Document;
import org.springframework.data.mongodb.core.mapping.Field;

@Document(collection="Address")
public class Address {
	@Id
	@Field
	private String id;
	@Field
	private String addressCountry = "";
	@Field
	private String addressCity = "";

	public String getId() {
		return id;
	}
	public void setId(String id) {
		this.id = id;
	}
	public String getAddressCountry() {
		return addressCountry;
	}
	public void setAddressCountry(String addressCountry) {
		this.addressCountry = addressCountry;
	}
	public String getAddressCity() {
		return addressCity;
	}
	public void setAddressCity(String addressCity) {
		this.addressCity = addressCity;
	}
}

Employee.java

package net.javabeat.springdata.data;

import javax.persistence.Id;

import org.springframework.data.mongodb.core.mapping.DBRef;
import org.springframework.data.mongodb.core.mapping.Document;
import org.springframework.data.mongodb.core.mapping.Field;

@Document(collection="Employee")
public class Employee {
	@Id
	@Field
	private String id;
	@Field
	private String employeeName;
	@DBRef
	private Address address;

	public String getId() {
		return id;
	}
	public void setId(String id) {
		this.id = id;
	}
	public String getEmployeeName() {
		return employeeName;
	}
	public void setEmployeeName(String employeeName) {
		this.employeeName = employeeName;
	}
	public Address getAddress() {
		return address;
	}
	public void setAddress(Address address) {
		this.address = address;
	}
}

3. Spring Data Repositories

It’s the spring data repositories that will be used for communicating with the MongoDB for any CRUD operation.

AddressRepository.java

package net.javabeat.springdata.repo;

import net.javabeat.springdata.data.Address;

import org.springframework.data.repository.CrudRepository;
import org.springframework.data.rest.core.annotation.RepositoryRestResource;

@RepositoryRestResource(collectionResourceRel="address",path="address")
public interface AddressRepository extends CrudRepository<Address,String>{
}

EmployeeRepository.java

package net.javabeat.springdata.repo;

import net.javabeat.springdata.data.Employee;

import org.springframework.data.repository.CrudRepository;
import org.springframework.data.rest.core.annotation.RepositoryRestResource;

@RepositoryRestResource(collectionResourceRel="employee",path="employee")
public interface EmployeeRepository extends CrudRepository<Employee, String>{
}

4. Spring Context Configuration

Here is the required spring context configuration for communicating to the MongoDB.

SpringContext.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:mongo="http://www.springframework.org/schema/data/mongo"
	xmlns:jpa="http://www.springframework.org/schema/data/jpa"
	xsi:schemaLocation="http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd">

	<!-- Register Mongo Instance -->
	<mongo:mongo id="mongo" host="localhost" port="27017" />
	<!--  for defining mongo template -->
	<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
		<constructor-arg ref="mongo" />
		<constructor-arg name="databaseName" value="JavaBeat" />
	</bean>

	<!-- For consider the using of annotations foe defining Spring Bean -->
	<context:annotation-config />

	<!-- For defining Spring Bean -->
	<context:component-scan base-package="net.javabeat.springdata.beans" />
	<!-- For defining mongo repository -->
	<mongo:repositories base-package="net.javabeat.springdata.repo" />

</beans>

5. Executable Application

This stand alone spring boot application will start this sample application.

Executable.java

package net.javabeat.springdata.executable;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.context.annotation.ImportResource;
import org.springframework.data.mongodb.repository.config.EnableMongoRepositories;
import org.springframework.data.rest.webmvc.config.RepositoryRestMvcConfiguration;

@Configuration
@EnableMongoRepositories
@Import(RepositoryRestMvcConfiguration.class)
@ImportResource("classpath:SpringContext.xml")
@EnableAutoConfiguration
public class Executable {

	public static void main(String[] args) {
		SpringApplication.run(Executable.class, args);
	}
}

6. Maven Dependencies

It’s the maven libraries that define the required libraries for the suggested communication with the MongoDB through Spring REST.

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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>

	<groupId>net.javabeat.springdata</groupId>
	<artifactId>SpringData-MongoDB-REST</artifactId>
	<version>1.0</version>
	<packaging>jar</packaging>

	<name>Spring Data</name>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.0.2.RELEASE</version>
	</parent>

	<build>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<configuration>
					<source>1.6</source>
					<target>1.6</target>
					<encoding>UTF-8</encoding>
				</configuration>
			</plugin>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

	<dependencies>

		<!-- Dependency for Spring Boot -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.data</groupId>
			<artifactId>spring-data-rest-core</artifactId>
			<version>2.0.2.RELEASE</version>
		</dependency>

		<dependency>
			<groupId>org.springframework.data</groupId>
			<artifactId>spring-data-mongodb</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.data</groupId>
			<artifactId>spring-data-rest-webmvc</artifactId>
		</dependency>
	</dependencies>

</project>

7. Install REST Shell

Rest shell is the native engine that provided by Spring and can be downloaded from here. After downloading the shell, you can unzip it into any location that you suggested.

Open the command line and navigate into the unzipped location that you already selected before and type into command line rest-shell and press enter. Be sure that your application is up and running before any further uses of the shell.

Rest-Shell Starting Up

8. MongoDB + Spring Data Repository + Spring REST Demo

Inside this demonstration, set of snapshots has been used for clarifying the operations of READ, PERSIST & DELETE operations.

List all of collections inside MongoDB

Follow address - getting the address of id 1

Follow employee - getting the employee of id 1

Create Employee and Associate it with the already created Address entity

List of Addresses

List all employees

9. MongoDB Collections

Database address records

Database employee records

10. Accessing Through HTTP

HTTP employees list

11. Summary

Congratulations, you’ve just developed an application that uses the Spring REST for getting successful operations against MongoDB.

Download Source Code

[wpdm_file id=100]

Category: Spring FrameworkTag: MongoDB, Spring Boot, Spring Data, Spring REST

About Amr Mohammed

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