Examples with JsonParser javax.json.stream.JsonParser used on opensource projects

Example 1 with JsonParser

use of javax.json.stream.JsonParser in project quickstart by wildfly.

the class JsonController method parseJsonStream.

public void parseJsonStream() {
    StringBuilder sb = new StringBuilder();
    String json = getJsonString();
    try {
        JsonParser parser = Json.createParser(new StringReader(json));
        while (parser.hasNext()) {
            Event event = parser.next();
            if (event.equals(Event.KEY_NAME)) {
                sb.append(" - - - -  >  Key: " + parser.getString() + "  < - - - - - \n");
            }
            if (event.equals(Event.VALUE_STRING)) {
                sb.append("Value as String: " + parser.getString() + "\n");
            }
            if (event.equals(Event.VALUE_NUMBER)) {
                sb.append("Value as Number: " + parser.getInt() + "\n");
            }
            if (event.equals(Event.VALUE_TRUE)) {
                sb.append("Value as Boolean: true\n");
            }
            if (event.equals(Event.VALUE_FALSE)) {
                sb.append("Value as Boolean: false \n");
            }
        }
    } catch (JsonException e) {
        FacesContext.getCurrentInstance().addMessage("form:parsed", new FacesMessage(e.getMessage()));
    }
    parsedResult = sb.toString();
}

Example 2 with JsonParser

use of javax.json.stream.JsonParser in project javaee7-samples by javaee-samples.

the class JsonParserFromReaderTest method testSimpleObject.

@Test
public void testSimpleObject() throws JSONException {
    String json = "{" + "  \"apple\":\"red\"," + "  \"banana\":\"yellow\"" + "}";
    JsonParser parser = Json.createParser(new StringReader(json));
    assertEquals(JsonParser.Event.START_OBJECT, parser.next());
    assertEquals(JsonParser.Event.KEY_NAME, parser.next());
    assertEquals(JsonParser.Event.VALUE_STRING, parser.next());
    assertEquals(JsonParser.Event.KEY_NAME, parser.next());
    assertEquals(JsonParser.Event.VALUE_STRING, parser.next());
    assertEquals(JsonParser.Event.END_OBJECT, parser.next());
}

Example 3 with JsonParser

use of javax.json.stream.JsonParser in project javaee7-samples by javaee-samples.

the class JsonParserFromReaderTest method testEmptyObject.

@Test
public void testEmptyObject() throws JSONException {
    String json = "{}";
    JsonParser parser = Json.createParser(new StringReader(json));
    assertEquals(JsonParser.Event.START_OBJECT, parser.next());
    assertEquals(JsonParser.Event.END_OBJECT, parser.next());
}

Example 4 with JsonParser

use of javax.json.stream.JsonParser in project javaee7-samples by javaee-samples.

the class JsonParserFromReaderTest method testNestedStructure.

@Test
public void testNestedStructure() throws JSONException {
    String json = "{\"title\":\"The Matrix\",\"year\":1999,\"cast\":[\"Keanu Reaves\",\"Laurence Fishburne\",\"Carrie-Anne Moss\"]}";
    JsonParser parser = Json.createParser(new StringReader(json));
    assertEquals(JsonParser.Event.START_OBJECT, parser.next());
    assertEquals(JsonParser.Event.KEY_NAME, parser.next());
    assertEquals(JsonParser.Event.VALUE_STRING, parser.next());
    assertEquals(JsonParser.Event.KEY_NAME, parser.next());
    assertEquals(JsonParser.Event.VALUE_NUMBER, parser.next());
    assertEquals(JsonParser.Event.KEY_NAME, parser.next());
    assertEquals(JsonParser.Event.START_ARRAY, parser.next());
    assertEquals(JsonParser.Event.VALUE_STRING, parser.next());
    assertEquals(JsonParser.Event.VALUE_STRING, parser.next());
    assertEquals(JsonParser.Event.VALUE_STRING, parser.next());
    assertEquals(JsonParser.Event.END_ARRAY, parser.next());
    assertEquals(JsonParser.Event.END_OBJECT, parser.next());
}

Example 5 with JsonParser

use of javax.json.stream.JsonParser in project javaee7-samples by javaee-samples.

the class MyReader method readFrom.

@Override
public MyObject readFrom(Class<MyObject> type, Type type1, Annotation[] antns, MediaType mt, MultivaluedMap<String, String> mm, InputStream in) throws IOException, WebApplicationException {
    MyObject mo = new MyObject();
    JsonParser parser = Json.createParser(in);
    while (parser.hasNext()) {
        switch(parser.next()) {
            case KEY_NAME:
                String key = parser.getString();
                parser.next();
                switch(key) {
                    case "name":
                        mo.setName(parser.getString());
                        break;
                    case "age":
                        mo.setAge(parser.getInt());
                        break;
                    default:
                        break;
                }
                break;
            default:
                break;
        }
    }
    return mo;
}