Liferay is easy: Spring RestTemplate Client in Liferay DXP (7.3)

Tuesday, June 14, 2022

Spring RestTemplate Client in Liferay DXP (7.3)

Today we will see how we can call Rest API in Liferay by using Spring RestTemplate. We just need to add dependencies related to Spring and accordingly write our client.

So lets start this step by step :-

Step 1:- Add Dependencies

Just open your build.gradle file and add two dependencies related to gradle.

build.gradle


	compile group: 'org.springframework.boot', name: 'spring-boot-starter-web', version: '2.2.2.RELEASE'
	compile group: 'org.springframework', name: 'spring-web', version: '5.0.3.RELEASE'

view raw build.gradle hosted with ❤ by GitHub

Step 2:- Use RestTemplte to write the client

In your java class you can use RestTemplate Class to call various APIs . Here i am using one open source rest api that will give us country details.

CountryImpl.java

	public JSONArray getCountryDetail(String countryName) {
	JSONArray data = null;
	try {
	RestTemplate restTemplate = new RestTemplate();
	String baseURL = "https://restcountries.com/v3.1/name/"+countryName;
	URI uri = UriComponentsBuilder.fromUriString(baseURL).build().toUri();
	ResponseEntity<String> result = restTemplate.getForEntity(uri, String.class);
	System.out.println("Status Code : " + result.getStatusCode());
	data = JSONFactoryUtil.createJSONArray(result.getBody());
	System.out.println(data);
	} catch (Exception e) {
	e.printStackTrace();
	}
	return data;
	}