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joi, 23 aprilie 2015

[OmniFaces utilities (2.0)] Encode the given array as JSON


[OmniFaces utilities] The encode() method encodes the given object as JSON. This supports the standard types Boolean, Number, CharSequence and Date. If the given object type does not match any of them, then it will attempt to inspect the object as a java bean whereby the public properties (with public getters) will be encoded as a JS object. It also supports Collections, Maps and arrays of them, even nested ones. The Date is formatted in RFC 1123 format, so you can if necessary just pass it straight to new Date() in JavaScript.

Method:
Read more:
Usage:

For example, suppose we have the following array:

String[] playerNames = new String[]{ "Rafael Nadal", "Andy Murray", "Novak Djokovic"};

Now we can encode the playerNames array into a JSON object:

import org.omnifaces.util.Json;
...
String jsonNames = Json.encode(playerNames);

JSON-encoded representation of the given object will be:

["Rafael Nadal","Andy Murray","Novak Djokovic"]

Or, nicely formatted:
Note  Behind the scene, Json#encode() will use:
·         Json#encodeArray() - since playerNames is an array
·         the supported Java standard types (CharSequence) - since playerNames array contains instances of CharSequence

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