Apex REST Annotations In Salesforce

Below are the supported "Apex REST Annotations In Salesforce".

@RestResource(urlMapping='/yourUrl')
@HttpDelete
@HttpGet
@HttpPatch
@HttpPost
@HttpPut

@RestResource

The @RestResource annotation is used at the class level and enables us to expose an Apex class as a REST resource.

To use @RestResource annotation, an Apex class must be defined as global.

@HttpDelete

This deletes the specified resource.

@HttpGet

This returns the specified resource.

@HttpPatch

This updates the specified resource.

@HttpPost

This creates a new resource.

@HttpPut

This creates or updates the specified resource.

To use @HttpDelete, @HttpGet, @HttpPatch, @HttpPost, @HttpPut Apex method must be defined as global static.

Example:

@RestResource(urlMapping='/getAccountOnExternalIdtofetchsinglerecord/*')

   global with sharing class getAccounttoSingleRecord {

      @Httpget

      global static Account fetchAccount(){

        Account obj=new Account();

        RestRequest req = RestContext.request;

        RestResponse res = Restcontext.response;

        string accId = req.requestURI.substring(req.requestURI.lastIndexOf('/')+1);

        obj=[Select id , name from Account where id=:accId];

        return obj;

      }

   }

What is the difference between @HttpPatch & @HttpPut in Salesforce?

@HttpPatch

This updates the specified resource.

Replace the part of  resource with the request received.

@HttpPut

This creates or updates the specified resource.

Replace the entire resource with the request received.

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