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| | package net.curisit.securis.utils;
| |
| | import java.io.IOException;
| | import java.util.List;
| | import java.util.Map;
| |
| | import net.curisit.securis.SeCurisException;
| |
| | import org.codehaus.jackson.JsonParseException;
| | import org.codehaus.jackson.JsonParser;
| | import org.codehaus.jackson.JsonProcessingException;
| | import org.codehaus.jackson.map.ObjectMapper;
| | import org.codehaus.jackson.map.SerializationConfig;
| | import org.codehaus.jackson.type.TypeReference;
| | import org.slf4j.Logger;
| | import org.slf4j.LoggerFactory;
| |
| | /**
| | * Helper method to perform JSON tasks
| | *
| | * @author cproberto
| | */
| | public class JsonUtils {
| |
| | private static final Logger log = LoggerFactory.getLogger(JsonUtils.class);
| |
| | final private static ObjectMapper MAPPER = new ObjectMapper();
| |
| | static {
| | MAPPER.configure(JsonParser.Feature.ALLOW_UNQUOTED_CONTROL_CHARS, true);
| | MAPPER.configure(JsonParser.Feature.ALLOW_BACKSLASH_ESCAPING_ANY_CHARACTER, true);
| | MAPPER.configure(JsonParser.Feature.ALLOW_COMMENTS, true);
| | MAPPER.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
| | MAPPER.configure(SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS, false);
| | MAPPER.configure(SerializationConfig.Feature.INDENT_OUTPUT, false);
| | MAPPER.configure(SerializationConfig.Feature.WRITE_DATES_AS_TIMESTAMPS, true);
| | MAPPER.configure(SerializationConfig.Feature.WRITE_ENUMS_USING_TO_STRING, true);
| |
| | }
| |
| | /**
| | * Convert an object in the type pass as parameter, avoiding to use casting in code.
| | *
| | * @param value
| | * @param type
| | * @return
| | */
| | public static <T> T value(Object value, Class<T> type) {
| |
| | return (T) value;
| | }
| |
| | public static <T> T parseJSON(String json, Class<T> type) throws SeCurisException {
| | try {
| | if (json == null)
| | return null;
| | return MAPPER.readValue(json, type);
| | } catch (JsonParseException e) {
| | log.error("Error parsing JSON string to obejct: {}", json, e);
| | if (json.length() > 60)
| | json = json.substring(0, 50) + "...";
| | throw new SeCurisException("Error parsing JSON string to object: " + json, e);
| | } catch (IOException e) {
| | log.error("Error parsing JSON string to object: {}", json, e);
| | if (json.length() > 60)
| | json = json.substring(0, 50) + "...";
| | throw new SeCurisException("Error parsing JSON string to object: " + json, e);
| | }
| | }
| |
| | /**
| | * Create a JSON string from a object compatible or annotated with Jackson, i.e: <code>
| | * {"f1":2345,"f2":"Test de valor"}
| | *
| | * @param obj
| | * @return JSON string representation from object
| | */
| | public static String toJSON(Object obj) throws SeCurisException {
| | // and could also do other configuration...
| | try {
| | if (obj == null)
| | return null;
| | return MAPPER.writeValueAsString(obj);
| | } catch (JsonProcessingException e) {
| | log.error("Error formating JSON from object: {}", obj, e);
| | throw new SeCurisException("Error formating JSON from object: " + obj, e);
| | } catch (IOException e) {
| | log.error("Error formating JSON from object: {}", obj, e);
| | throw new SeCurisException("Error formating JSON from object: " + obj, e);
| | }
| | }
| |
| | /**
| | * Create a JSON string from a object compatible or annotated with Jackson, i.e: <code>
| | * {"f1":2345,"f2":"Test de valor"}
| | *
| | * @param obj
| | * @return JSON string representation from object
| | */
| | public static String toJSON(Object obj, boolean pretty) throws SeCurisException {
| | // and could also do other configuration...
| | try {
| | if (obj == null)
| | return null;
| | MAPPER.enable(SerializationConfig.Feature.INDENT_OUTPUT);
| | String json = MAPPER.writeValueAsString(obj);
| | MAPPER.disable(SerializationConfig.Feature.INDENT_OUTPUT);
| | return json;
| | } catch (JsonProcessingException e) {
| | log.error("Error formating JSON from object: {}", obj, e);
| | throw new SeCurisException("Error formating JSON from object: " + obj, e);
| | } catch (IOException e) {
| | log.error("Error formating JSON from object: {}", obj, e);
| | throw new SeCurisException("Error formating JSON from object: " + obj, e);
| | }
| | }
| |
| | /**
| | * Create a Map from a json string, i.e: <code>
| | * {"f1":2345,"f2":"Test de valor"}
| | * </code>
| | *
| | * @param json
| | * String with json format
| | * @return
| | */
| | public static Map<String, Object> json2map(String json) throws JsonParseException {
| |
| | try {
| | if (json == null)
| | return null;
| | return MAPPER.readValue(json, Map.class);
| | } catch (JsonParseException e) {
| | log.error("Error parsing JSON string to map: {}", json, e);
| | throw e;
| | } catch (IOException e) {
| | log.error("Error parsing JSON string to map: {}", json, e);
| | }
| | return null;
| | }
| |
| | /**
| | * Create a JSON strin from a Map object, i.e: <code>
| | * {"f1":2345,"f2":"Test de valor"}
| | *
| | * @param map
| | * @return
| | */
| | public static String map2json(Map<String, Object> map) {
| | // and could also do other configuration...
| | try {
| | if (map == null)
| | return null;
| | return MAPPER.writeValueAsString(map);
| | } catch (JsonProcessingException e) {
| | log.error("Error formating JSON from map: {}", map, e);
| | } catch (IOException e) {
| | log.error("Error formating JSON from map: {}", map, e);
| | }
| |
| | return null;
| | }
| |
| | /**
| | * Create a Map from a json string, i.e: <code>
| | * [{"f1":2345}, {"f2":"Test de valor"}]
| | * </code>
| | *
| | * @param json
| | * String with json format
| | * @return
| | */
| | public static List<Object> json2list(String json) {
| | try {
| | return MAPPER.readValue(json, List.class);
| | } catch (JsonParseException e) {
| | log.error("Error converting JSON string to object {}", json, e);
| | } catch (IOException e) {
| | log.error("Error converting JSON string to object {}", json, e);
| | }
| | return null;
| | }
| |
| | public static <T> T json2object(String json, Class<T> classObject) throws SeCurisException {
| | try {
| | return MAPPER.readValue(json, classObject);
| | } catch (JsonParseException e) {
| | throw new SeCurisException("Error converting JSON to object", e);
| | } catch (IOException e) {
| | throw new SeCurisException("Error converting JSON to object", e);
| | }
| | }
| |
| | public static <T> T json2object(String json, TypeReference<T> typeReference) throws SeCurisException {
| | try {
| | return MAPPER.readValue(json, typeReference);
| | } catch (JsonParseException e) {
| | throw new SeCurisException("Error converting JSON to object", e);
| | } catch (IOException e) {
| | e.printStackTrace();
| | throw new SeCurisException("Error converting JSON to object", e);
| | }
| | }
| |
| | }
|
|
