- JSON.simple Tutorial
- JSON.simple - Home
- JSON.simple - Overview
- JSON.simple - Environment Setup
- JSON.simple - JAVA Mapping
- Decoding Examples
- Escaping Special Characters
- JSON.simple - Using JSONValue
- JSON.simple - Exception Handling
- JSON.simple - Container Factory
- JSON.simple - Content Handler
- Encoding Examples
- JSON.simple - Encode JSONObject
- JSON.simple - Encode JSONArray
- Merging Examples
- JSON.simple - Merging Objects
- JSON.simple - Merging Arrays
- Combination Examples
- JSON.simple - Primitive, Object, Array
- JSON.simple - Primitive, Map, List
- Primitive, Object, Map, List
- Customization Examples
- JSON.simple - Customized Output
- Customized Output Streaming
- JSON.simple Useful Resources
- JSON.simple - Quick Guide
- JSON.simple - Useful Resources
- JSON.simple - Discussion
JSON.simple - ContentHandler
ContentHandler interface is used to provide a SAX like interface to stream the large json. It provides stoppable capability as well. Following example illustrates the concept.
Example
import java.io.IOException; import java.util.List; import java.util.Stack; import org.json.simple.JSONArray; import org.json.simple.JSONObject; import org.json.simple.parser.ContentHandler; import org.json.simple.parser.JSONParser; import org.json.simple.parser.ParseException; class JsonDemo { public static void main(String[] args) { JSONParser parser = new JSONParser(); String text = "{\"first\": 123, \"second\": [4, 5, 6], \"third\": 789}"; try { CustomContentHandler handler = new CustomContentHandler(); parser.parse(text, handler,true); } catch(ParseException pe) { } } } class CustomContentHandler implements ContentHandler { @Override public boolean endArray() throws ParseException, IOException { System.out.println("inside endArray"); return true; } @Override public void endJSON() throws ParseException, IOException { System.out.println("inside endJSON"); } @Override public boolean endObject() throws ParseException, IOException { System.out.println("inside endObject"); return true; } @Override public boolean endObjectEntry() throws ParseException, IOException { System.out.println("inside endObjectEntry"); return true; } public boolean primitive(Object value) throws ParseException, IOException { System.out.println("inside primitive: " + value); return true; } @Override public boolean startArray() throws ParseException, IOException { System.out.println("inside startArray"); return true; } @Override public void startJSON() throws ParseException, IOException { System.out.println("inside startJSON"); } @Override public boolean startObject() throws ParseException, IOException { System.out.println("inside startObject"); return true; } @Override public boolean startObjectEntry(String key) throws ParseException, IOException { System.out.println("inside startObjectEntry: " + key); return true; } }
Output
inside startJSON inside startObject inside startObjectEntry: first inside primitive: 123 inside endObjectEntry inside startObjectEntry: second inside startArray inside primitive: 4 inside primitive: 5 inside primitive: 6 inside endArray inside endObjectEntry inside startObjectEntry: third inside primitive: 789 inside endObjectEntry inside endObject inside endJSON
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