Example

         
    import org.springframework.web.bind.annotation.RestController;
	import org.springframework.web.bind.annotation.GetMapping;

	
    @RestController
    public class BasicController {

        @GetMapping("/welcome")            
        public String welcome() {
			return " Hello World ";
		}
    }                                 
                                                

In the example we can see two annotation, @RestController and @GetMapping.

Lets create a Simple REST Service and understand the usage of @RestController.

Procedure :

• Create project using STS (Spring Starter Project) or Spring Initializr.

Project structure will look like this :



• Add a Web Dependency in your pom.xml

		
			<dependency>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-starter-web</artifactId>
			</dependency>
													

or type web in Search for dependencies search box, add web dependency and download zipped project.

• Create a Model Class (i.e. Employee) in model package.

		
package com.tutorialbox.model;

	public class Employee {											
		
		private long id;
		private String name;
		private String gender;
		private int age;
		private double salary;
					
		public Employee( long id, String name, int age, String gender, double salary ) 
		{
			super();
			this.id = id;
			this.name = name;				
			this.gender = gender;
			this.age = age;				
			this.salary = salary;
		}

		public long getId() {
			return id;
		}

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

		public String getName() {
			return name;
		}

		public void setName(String name) {
			this.name = name;
		}

		public String getGender() {
			return gender;
		}

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

		public int getAge() {
			return age;
		}

		public void setAge(int age) {
			this.age = age;
		}

		public double getSalary() {
			return salary;
		}

		public void setSalary(double salary) {
			this.salary = salary;
		}
	}
													

		@RestController
		public class EmployeeController {
			...
		}
												

	private static List<Employee> employeeList = new ArrayList<Employee>();
	
	public EmployeeController() {
		
		Employee employee1 = new Employee(101,"Rahul",23,60000 );
		Employee employee2 = new Employee(102,"Shreya",23,70000 );
		Employee employee3 = new Employee(103,"Arun",23,65000 );
		Employee employee4 = new Employee(104,"Radhika",23,55000 );
		employeeList.add(employee1);	
		employeeList.add(employee2);
		employeeList.add(employee3);
		employeeList.add(employee4);
	}
												

		@GetMapping("/employees")
		public List<Employee> getEmployees() { 
			return employeeList;
		}
												

You will see the result as :