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Spring Boot – RESTful Web Service with POST Request in JSON Example

In the previous articles I didn’t get a chance to use the POST request in the examples, but this is very important. In this article I am going to show you how to create a Spring Boot REST service with POST request in JSON format with a simple example.

As Spring Boot by default supports JSONΒ request and responses, we no need to add any dependencies. A simple annotation called @RequestBody will do the trick for us πŸ˜‰

pom.xml

<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>com.java4s</groupId>
    <artifactId>SpringBootRestfulPostJSON</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.6.RELEASE</version>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>
    <properties>
        <java.version>1.8</java.version>
    </properties>
</project>

SpringBootApp.java

package com.java4s.app;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class SpringBootApp {
    public static void main(String[] args) {

        SpringApplication.run(SpringBootApp.class, args);

    }
}

Customer.java

package com.java4s.model;

public class Customer {

    private int custNo;
    private String name;
    private String country;

    public Customer() {

    }

    public Customer(int custNumber, String name, String country) {
        this.custNo = custNumber;
        this.name = name;
        this.country = country;
    }

    public int getCustNo() {
        return custNo;
    }

    public void setCustNo(int custNo) {
        this.custNo = custNo;
    }

    public String getName() {
        return name;
    }

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

    public String getCountry() {
        return country;
    }

    public void setCountry(String country) {
        this.country = country;
    }
}

SpringJava4sController.java

package com.java4s.app.controller;

import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

import com.java4s.model.Customer;

@RestController
public class SpringJava4sController {

    @PostMapping(path = "/save-cust-info")
    public String customerInformation(@RequestBody Customer cust) {

        /* You can write your DAO logic here.
         * For time being I am printing the customer data just to show the POST call is working.
         */

        return "Customer information saved successfully ::." + cust.getCustNo() + " " + cust.getName() + " " + cust.getCountry();
    }
}

application.properties

server.contextPath=/spring-boot-restful-post-json

Output

Run the application and open the URL in Postman
http://localhost:8080/spring-boot-restful-post-json/save-cust-info

Request:

{
	"custNo" : 100,
	"name" : "Google",
	"country": "United States"
}

Response:

 

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  ::. About the Author .::

Java4s_Author
- Java/J2EE Full Stack Developer
Founder of Java4s - Get It Yourself, A popular Java/J2EE Programming Blog, Love Java and UI frameworks.
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Comments

4 Responses to “Spring Boot – RESTful Web Service with POST Request in JSON Example”
  1. Manikandan says:

    Its nice….

  2. ganapathi says:

    Customer information saved successfully ::.0 Google United States

    it shows like that ,always shows zero.why?

  3. shiva says:

    good eg for beginners thanks put more examples…

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