Created
March 8, 2019 02:05
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Jsons工具类，使用jackson工具类封装
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| import com.fasterxml.jackson.databind.DeserializationFeature; | |
| import com.fasterxml.jackson.databind.ObjectMapper; | |
| import java.util.List; | |
| public class JsonUtils { | |
| private static final ObjectMapper BASIC = new BasicObjectMapper(); | |
| private static class BasicObjectMapper extends ObjectMapper { | |
| private BasicObjectMapper() { | |
| super(); | |
| configure(DeserializationFeature.READ_UNKNOWN_ENUM_VALUES_AS_NULL, true); | |
| configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false); | |
| } | |
| } | |
| public static String toJson(Object obj) { | |
| if (CommonUtils.isBlank(obj)) { | |
| return null; | |
| } | |
| try { | |
| return BASIC.writeValueAsString(obj); | |
| } catch (Exception e) { | |
| throw new RuntimeException(String.format("object(%s) to json exception", obj), e); | |
| } | |
| } | |
| public static <T> T toObject(String json, Class<T> clazz) { | |
| try { | |
| return BASIC.readValue(json, clazz); | |
| } catch (Exception e) { | |
| throw new RuntimeException(String.format("json(%s) to object(%s) exception", json, clazz.getName()), e); | |
| } | |
| } | |
| public static <T> T toObjectNil(String json, Class<T> clazz) { | |
| try { | |
| return BASIC.readValue(json, clazz); | |
| } catch (Exception e) { | |
| if (Logs.ROOT_LOG.isErrorEnabled()) { | |
| Logs.ROOT_LOG.error(String.format("json(%s) to object(%s) exception", json, clazz.getName()), e); | |
| } | |
| return null; | |
| } | |
| } | |
| public static <T> List<T> toList(String json, Class<T> clazz) { | |
| try { | |
| return BASIC.readValue(json, BASIC.getTypeFactory().constructCollectionType(List.class, clazz)); | |
| } catch (Exception e) { | |
| throw new RuntimeException(String.format("json(%s) to List<%s> exception", json, clazz.getName()), e); | |
| } | |
| } | |
| public static <T> List<T> toListNil(String json, Class<T> clazz) { | |
| try { | |
| return BASIC.readValue(json, BASIC.getTypeFactory().constructCollectionType(List.class, clazz)); | |
| } catch (Exception e) { | |
| if (Logs.ROOT_LOG.isErrorEnabled()) { | |
| Logs.ROOT_LOG.error(String.format("json(%s) to List<%s> exception", json, clazz.getName()), e); | |
| } | |
| return null; | |
| } | |
| } | |
| } |
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