Apex Developer Guide

Apex Developer Guide
Release Notes
Getting Started with Apex
Writing Apex
Running Apex
Invoking Apex
Apex Transactions and Governor Limits
Using Salesforce Features with Apex
Integration and Apex Utilities
Invoking Callouts Using Apex
JSON Support
XML Support
ZIP Support
Securing Your Data
Encoding Your Data
Using Patterns and Matchers
Debugging, Testing, and Deploying Apex
Apex Reference
Appendices
PDF

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ZIP Support

Take advantage of a native Apex Zip library to create and extract ZIP archive files by using the class methods in the Compression namespace.

You can compress multiple attachments or documents into an Apex blob that contains the ZIP archive. You can also specify the data to be extracted from the zip archive, without uncompressing the entire ZIP archive. To optimize compression, you can specify a compression method and compression level.

This example code extracts a JSON translation file from a callout response containing a ZIP archive by getting and extracting the specified entry from the ZIP archive. 

1HttpRequest request = new HttpRequest();
2request.setEndpoint('callout:My_Named_Credential/translationService');
3request.setMethod('POST');
4// Set request payload to translate...
5
6HttpResponse response = new Http().send(request);
7Blob translationZip = response.getBodyAsBlob();
8
9ZipReader reader = new ZipReader(translationZip);
10ZipEntry frTranslation = reader.getEntry('translations/fr.json');
11Blob frTranslationData = reader.extractEntry(frTranslation);
12