Force.com Apex Code Developer's Guide

Clouds with binary code floating aboveCloud with binary code floating above

No Results

Search Tips:

  • Please consider misspellings
  • Try different search keywords
PDF

Newer Version Available

This content describes an older version of this product. View Latest

Invoking Callouts Using Apex

An Apex callout enables you to tightly integrate your Apex with an external service by making a call to an external Web service or sending a HTTP request from Apex code and then receiving the response. Apex provides integration with Web services that utilize SOAP and WSDL, or HTTP services (RESTful services).

Before any Apex callout can call an external site, that site must be registered in the Remote Site Settings page, or the callout fails. Salesforce prevents calls to unauthorized network addresses.

Note

To learn more about the two types of callouts, see:

Callouts enable Apex to invoke external web or HTTP services. Apex Web services allow an external application to invoke Apex methods through Web services.

Tip