diff options
Diffstat (limited to 'id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/utils/JsonMapper.java')
-rw-r--r-- | id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/utils/JsonMapper.java | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/utils/JsonMapper.java b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/utils/JsonMapper.java new file mode 100644 index 000000000..7940955e2 --- /dev/null +++ b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/utils/JsonMapper.java @@ -0,0 +1,73 @@ +package at.gv.egovernment.moa.id.commons.utils; + +import java.io.IOException; + +import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility; +import com.fasterxml.jackson.annotation.PropertyAccessor; +import com.fasterxml.jackson.core.JsonParseException; +import com.fasterxml.jackson.core.JsonProcessingException; +import com.fasterxml.jackson.databind.JavaType; +import com.fasterxml.jackson.databind.JsonMappingException; +import com.fasterxml.jackson.databind.ObjectMapper; +import com.fasterxml.jackson.databind.SerializationFeature; +import com.fasterxml.jackson.databind.type.TypeFactory; + +/** + * Helper class to handle the JSON (de-)serialization. + * + */ +public class JsonMapper { + + private ObjectMapper mapper = new ObjectMapper(); + + /** + * The default constructor where the default pretty printer is disabled. + */ + public JsonMapper() { + this(false); + } + + /** + * The constructor. + * @param prettyPrint enables or disables the default pretty printer + */ + public JsonMapper(boolean prettyPrint) { + mapper.setVisibility(PropertyAccessor.ALL, Visibility.NONE); + mapper.setVisibility(PropertyAccessor.GETTER, Visibility.PUBLIC_ONLY); + mapper.setVisibility(PropertyAccessor.IS_GETTER, Visibility.PUBLIC_ONLY); + if (prettyPrint) { + mapper.enable(SerializationFeature.INDENT_OUTPUT); + } + } + + /** + * Serialize an object to a JSON string. + * @param value the object to serialize + * @return a JSON string + * @throws JsonProcessingException thrown when an error occurs during serialization + */ + public String serialize(Object value) throws JsonProcessingException { + return mapper.writeValueAsString(value); + } + + /** + * Deserialize a JSON string. + * + * @param value the JSON string to deserialize + * @param clazz optional parameter that determines the type of the returned object. If not set, an {@link Object} is returned. + * @return the deserialized JSON string as an object of type {@code clazz} or {@link Object} + * @throws JsonParseException if the JSON string contains invalid content. + * @throws JsonMappingException if the input JSON structure does not match structure expected for result type + * @throws IOException if an I/O problem occurs (e.g. unexpected end-of-input) + */ + public <T> Object deserialize(String value, Class<T> clazz) throws JsonParseException, JsonMappingException, IOException{ + + ObjectMapper mapper = new ObjectMapper(); + if (clazz != null) { + JavaType javaType = TypeFactory.defaultInstance().constructType(clazz); + return mapper.readValue(value, javaType); + } else { + return mapper.readValue(value, Object.class); + } + } +} |