EncodingUtil Class

Use the methods in the EncodingUtil class to encode and decode URL strings, and convert strings to hexadecimal format.

Name	Arguments	Return Type	Description
`base64Decode`	String `inputString`	Blob	Converts a Base64-encoded String to a Blob representing its normal form.
`base64Encode`	Blob `inputBlob`	String	Converts a Blob to an unencoded String representing its normal form.
`convertToHex`	Blob `inputString`	String	Returns a hexadecimal (base 16) representation of the `inputString`. This method can be used to compute the client response (for example, HA1 or HA2) for HTTP Digest Authentication (RFC2617).
`urlDecode`	String `inputString` String `encodingScheme`	String	Decodes a string in `application/x-www-form-urlencoded` format using a specific encoding scheme, for example “UTF-8.” This method uses the supplied encoding scheme to determine which characters are represented by any consecutive sequence of the from `\"%xy\"`. For more information about the format, see The form-urlencoded Media Type in Hypertext Markup Language - 2.0.
`urlEncode`	String `inputString` String `encodingScheme`	String	Encodes a string into the `application/x-www-form-urlencoded` format using a specific encoding scheme, for example “UTF-8.” This method uses the supplied encoding scheme to obtain the bytes for unsafe characters. For more information about the format, see The form-urlencoded Media Type in Hypertext Markup Language - 2.0. Example: String encoded = EncodingUtil.urlEncode(`url`, 'UTF-8');

Note

You cannot use the EncodingUtil methods to move documents with non-ASCII characters to Salesforce. You can, however, download a document from Salesforce. To do so, query the ID of the document using the APIquery call, then request it by ID.

The following example illustrates how to use convertToHex to compute a client response for HTTP Digest Authentication (RFC2617):

@isTest
private class SampleTest {
   static testmethod void testConvertToHex() {
      String myData = 'A Test String';
      Blob hash = Crypto.generateDigest('SHA1',Blob.valueOf(myData));
      String hexDigest = EncodingUtil.convertToHex(hash);
      System.debug(hexDigest);  
    } 
}