1. 內容

 1 public class PfJacksonUtils {
 2     private PfJacksonUtils() {
 3 
 4     }
 5 
 6     public static String beanToJson(Object obj) throws JsonProcessingException {
 7         ObjectMapper objectMapper = new ObjectMapper();
 8         return objectMapper.writeValueAsString(obj);
 9     }
10
 
 
11     public static <T> T jsonToBean(String json, Class<T> cls)
12             throws JsonParseException, JsonMappingException, IOException {
13         ObjectMapper objectMapper = new ObjectMapper();
14         if (json == null) {
15             return objectMapper.readValue("{}", cls);
 
16         }
17         return objectMapper.readValue(json, cls);
18     }
19 
20     public static String mapToJson(Map<String, String> map) throws JsonProcessingException {
21         ObjectMapper mapper = new ObjectMapper();
22         return mapper.writeValueAsString(map);
23     }
24 
25     public
 
 static <T> T jsonToBeanByMatchAttribute(String json, Class<T> cls)
26             throws JsonParseException, JsonMappingException, IOException {
27         if (StringUtils.isEmpty(json)) {
28             return null;
29         }
30         ObjectMapper objectMapper = new ObjectMapper();
31         objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
32         return objectMapper.readValue(json, cls);
33     }
34 }

2. 用法

1 String json = PfJacksonUtils.beanToJson(object);
2 PmDataInfo pmDataInfo = PfJacksonUtils.jsonToBeanByMatchAttribute(json, PmDataInfo.class);