Mastering the Art of Technological Integration

 Here is solution to upload file in third party system using apex in salesforce. below is formdata builder apex class which is building required parameters. public class FormData {     //  The boundary is alligned so it doesn't produce padding characters when base64 encoded.     private final static string Boundary = '1ff13444ed8140c7a32fc4e6451aa76d';     /**      *  Returns the request's content type for multipart/form-data requests.      */     public static string GetContentType() {         return 'multipart/form-data; charset="UTF-8"; boundary="' + Boundary + '"';     }     /**      *  Pad the value with spaces until the base64 encoding is no longer padded.      */     private static string SafelyPad(string value,string valueCrLf64,string lineBreaks) {         string valueCrLf = '';   ...

Introduction: In Salesforce development, handling file uploads and multipart data is a common requirement. Multipart data allows you to send multiple types of data in a single HTTP request, including files and form data. The boundary is a unique identifier used to separate the different parts of the multipart request. In this blog post, we will delve into multipart data, boundaries, and provide an example code snippet in Salesforce to help you understand their implementation.

Here is sample code to upload CSV file and insert CSV data in salesforce objects. Read CSV and insert CSV records in salesforce In this Code we are inserting data in contact object using standard template. First Column of CSV is Name, second column is LastName and third one is Title. Visualforce Page <apex:page controller="ReadandInsertController">     <apex:form >         <apex:pagemessages />         <apex:pageBlock >             <apex:actionRegion >