Apex Rest based Sample

This blog will help you to setup salesforce rest based sample in a easy way and testing methods within same salesforce org.

Class Code:

	@RestResource(urlMapping='/FindCase/V1/*')
	global with sharing class ApexRestBased
	{
	@HttpPut //if it is request body type, then any one of these are fine PUT, PATCH, POST but same method cannot be used twice.
	global static void findCaseDetails() //Method name not play any role
	{
	RestRequest req = RestContext.request;
	ApexRestBased.Request_DTO req_dto = (ApexRestBased.Request_DTO)JSON.deserialize(req.requestBody.tostring(), ApexRestBased.Request_DTO.class);
	ApexRestBased.Response_DTO res_dto = processRequest(req_dto);
	prepareResponse(res_dto);
	}
	private class Request_DTO{
	private string caseNumber = '';
	}
	private class Response_DTO{
	private string result = '';
	private string isSuccess = '';
	private string errorNumber = '';
	private string errorDesc = '';
	}
	private static ApexRestBased.Response_DTO processRequest(ApexRestBased.Request_DTO req_dto){
	ApexRestBased.Response_DTO res_dto = new ApexRestBased.Response_DTO();
	list<Case> resCases = [SELECT Id, CaseNumber, Status, Type, Reason, Origin, Subject, Priority, Description, IsClosed FROM Case WHERE CaseNumber =: req_dto.caseNumber];
	if(resCases != null && !resCases.isEmpty()){
	res_dto.result = system.JSON.serialize(resCases);
	res_dto.isSuccess = 'true';
	}
	else{
	res_dto.isSuccess = 'false';
	res_dto.errorNumber = '0000001';
	res_dto.errorDesc = 'Case Not found!';
	}
	return res_dto;
	}
	private static void prepareResponse(ApexRestBased.Response_DTO res_dto){
	RestResponse res = RestContext.response;
	res.statusCode = 200;
	res.addHeader('Content-Type', 'application/json');
	res.responseBody = Blob.valueOf(System.JSON.serialize(res_dto));
	}
	}

view raw ApexRest.cls hosted with ❤ by GitHub

Testing can be done by running below snippet in your Develper console / Anonymous code bloc ( ctrl + e)

	String salesforceHost = System.Url.getSalesforceBaseURL().toExternalForm();
	String url = salesforceHost + '/services/apexrest/pradeep_dani/FindCase/V1';
	HttpRequest req = new HttpRequest();
	req.setMethod('PUT');
	req.setEndpoint(url);
	req.setHeader('Content-type', 'application/json');
	req.setHeader('Authorization', 'Bearer ' + UserInfo.getSessionId());
	req.setBody('{"caseNumber":"00001085"}');
	Http http = new Http();
	HTTPResponse res = http.send(req);
	System.debug(res.getBody());

view raw demo testing snippet.cls hosted with ❤ by GitHub