jsonトランスオブジェクト、オブジェクトトランスjson列
3919 ワード
/**
* json
*/
public class JsonUtils {
public static final Logger logger = LoggerFactory.getLogger(JsonUtils.class);
private static ObjectMapper mapper = new ObjectMapper();
static {
mapper.setVisibility(PropertyAccessor.FIELD, JsonAutoDetect.Visibility.ANY);
mapper.setVisibility(PropertyAccessor.IS_GETTER, JsonAutoDetect.Visibility.NONE);
mapper.setVisibility(PropertyAccessor.SETTER, JsonAutoDetect.Visibility.NONE);
mapper.configure(DeserializationFeature.READ_ENUMS_USING_TO_STRING, true);
mapper.configure(SerializationFeature.WRITE_ENUMS_USING_TO_STRING, true);
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
}
public static ObjectMapper getMapper() {
return mapper;
}
public static void setMapper(ObjectMapper mapper) {
JsonUtils.mapper = mapper;
}
public static String returnJsonString(Object pojo) {
String rs = null;
try {
rs = mapper.writeValueAsString(pojo);
} catch (JsonProcessingException e) {
logger.error("error in returnJsonString due to {}" + e);
}
return rs;
}
public static Object returnObject(String jsonStr, Class objClass) {
if (jsonStr == null) {
return null;
}
Object obj = null;
try {
obj = mapper.readValue(jsonStr, objClass);
} catch (JsonParseException e) {
logger.info(logger.getName() + "-->returnObject exception:" + e);
} catch (JsonMappingException e) {
logger.info(logger.getName() + "-->returnObject exception:" + e);
} catch (IOException e) {
logger.info(logger.getName() + "-->returnObject exception:" + e);
} finally {
return obj;
}
}
public static JsonNode returnJsonNode(String jsonString) {
JsonNode jsonNode = null;
try {
jsonNode = mapper.readTree(jsonString);
} catch (IOException e) {
logger.error("error in returnJsonNode due to {}" + e);
}
return jsonNode;
}
public static T returnType(String jsonStr, TypeReference valueTypeRef) {
if (jsonStr == null) {
return null;
}
T t = null;
try {
t = mapper.readValue(jsonStr, valueTypeRef);
} catch (JsonParseException e) {
logger.info(logger.getName() + "-->returnType:" + e);
} catch (JsonMappingException e) {
logger.info(logger.getName() + "-->returnType:" + e);
} catch (IOException e) {
logger.info(logger.getName() + "-->returnType:" + e);
} finally {
return t;
}
}
public static T readValue(JsonNode rootJsonNode, List fieldNames, Class valueType) {
JsonNode jsonNode = getJsonNode(rootJsonNode, fieldNames);
if (jsonNode == null || valueType == null) {
return null;
}
try {
return mapper.readerFor(valueType).readValue(jsonNode);
} catch (IOException e) {
logger.info(logger.getName() + "-->readValue:" + e.getMessage());
}
return null;
}
public static JsonNode getJsonNode(JsonNode rootJsonNode, List fieldNames) {
JsonNode jsonNode = rootJsonNode;
for (int i = 0; i < fieldNames.size(); i++) {
if (jsonNode.has(fieldNames.get(i))) {
jsonNode = jsonNode.get(fieldNames.get(i));
} else {
return null;
}
}
return jsonNode;
}
}