| 提交 | 用户 | 时间 | ||
| e7c126 | 1 | package com.xxl.job.admin.core.util; |
| H | 2 | |
| 3 | import com.fasterxml.jackson.core.JsonGenerationException; | |
| 4 | import com.fasterxml.jackson.core.JsonParseException; | |
| 5 | import com.fasterxml.jackson.databind.JavaType; | |
| 6 | import com.fasterxml.jackson.databind.JsonMappingException; | |
| 7 | import com.fasterxml.jackson.databind.ObjectMapper; | |
| 8 | import org.slf4j.Logger; | |
| 9 | import org.slf4j.LoggerFactory; | |
| 10 | ||
| 11 | import java.io.IOException; | |
| 12 | ||
| 13 | /** | |
| 14 | * Jackson util | |
| 15 | * | |
| 16 | * 1、obj need private and set/get； | |
| 17 | * 2、do not support inner class； | |
| 18 | * | |
| 19 | * @author xuxueli 2015-9-25 18:02:56 | |
| 20 | */ | |
| 21 | public class JacksonUtil { | |
| 22 | private static Logger logger = LoggerFactory.getLogger(JacksonUtil.class); | |
| 23 | ||
| 24 | private final static ObjectMapper objectMapper = new ObjectMapper(); | |
| 25 | public static ObjectMapper getInstance() { | |
| 26 | return objectMapper; | |
| 27 | } | |
| 28 | ||
| 29 | /** | |
| 30 | * bean、array、List、Map --> json | |
| 31 | * | |
| 32 | * @param obj | |
| 33 | * @return json string | |
| 34 | * @throws Exception | |
| 35 | */ | |
| 36 | public static String writeValueAsString(Object obj) { | |
| 37 | try { | |
| 38 | return getInstance().writeValueAsString(obj); | |
| 39 | } catch (JsonGenerationException e) { | |
| 40 | logger.error(e.getMessage(), e); | |
| 41 | } catch (JsonMappingException e) { | |
| 42 | logger.error(e.getMessage(), e); | |
| 43 | } catch (IOException e) { | |
| 44 | logger.error(e.getMessage(), e); | |
| 45 | } | |
| 46 | return null; | |
| 47 | } | |
| 48 | ||
| 49 | /** | |
| 50 | * string --> bean、Map、List(array) | |
| 51 | * | |
| 52 | * @param jsonStr | |
| 53 | * @param clazz | |
| 54 | * @return obj | |
| 55 | * @throws Exception | |
| 56 | */ | |
| 57 | public static <T> T readValue(String jsonStr, Class<T> clazz) { | |
| 58 | try { | |
| 59 | return getInstance().readValue(jsonStr, clazz); | |
| 60 | } catch (JsonParseException e) { | |
| 61 | logger.error(e.getMessage(), e); | |
| 62 | } catch (JsonMappingException e) { | |
| 63 | logger.error(e.getMessage(), e); | |
| 64 | } catch (IOException e) { | |
| 65 | logger.error(e.getMessage(), e); | |
| 66 | } | |
| 67 | return null; | |
| 68 | } | |
| 69 | ||
| 70 | /** | |
| 71 | * string --> List<Bean>... | |
| 72 | * | |
| 73 | * @param jsonStr | |
| 74 | * @param parametrized | |
| 75 | * @param parameterClasses | |
| 76 | * @param <T> | |
| 77 | * @return | |
| 78 | */ | |
| 79 | public static <T> T readValue(String jsonStr, Class<?> parametrized, Class<?>... parameterClasses) { | |
| 80 | try { | |
| 81 | JavaType javaType = getInstance().getTypeFactory().constructParametricType(parametrized, parameterClasses); | |
| 82 | return getInstance().readValue(jsonStr, javaType); | |
| 83 | } catch (JsonParseException e) { | |
| 84 | logger.error(e.getMessage(), e); | |
| 85 | } catch (JsonMappingException e) { | |
| 86 | logger.error(e.getMessage(), e); | |
| 87 | } catch (IOException e) { | |
| 88 | logger.error(e.getMessage(), e); | |
| 89 | } | |
| 90 | return null; | |
| 91 | } | |
| 92 | } | |
