compile group: 'com.fasterxml.jackson.core', name: 'jackson-core', version: '2.11.1'
compile group: 'com.fasterxml.jackson.core', name: 'jackson-databind', version: '2.11.1'
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import lombok.SneakyThrows;
import lombok.extern.slf4j.Slf4j;
import java.io.IOException;
import java.time.Instant;
import java.time.ZoneId;
import java.time.ZonedDateTime;
@Slf4j
public class Json {
private static ObjectMapper MAPPER;
static {
JavaTimeModule javaTimeModule = new JavaTimeModule();
javaTimeModule.addSerializer(ZonedDateTime.class, new JsonSerializer<zoneddatetime>() {
@Override
public void serialize(ZonedDateTime value, JsonGenerator gen, SerializerProvider serializers)
throws IOException {
gen.writeNumber(value.toInstant().toEpochMilli());
}
});
javaTimeModule.addDeserializer(ZonedDateTime.class, new JsonDeserializer<zoneddatetime>() {
@Override
public ZonedDateTime deserialize(JsonParser p, DeserializationContext ctxt)
throws IOException, JsonProcessingException {
return ZonedDateTime.ofInstant(Instant.ofEpochMilli(p.readValueAs(Long.class)), ZoneId.systemDefault());
}
});
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.setDefaultPropertyInclusion(JsonInclude.Include.NON_NULL);
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES,false);
objectMapper.registerModule(javaTimeModule);
MAPPER = objectMapper;
}
public static ObjectMapper getMapper() {
return MAPPER;
}
@SneakyThrows
public static String toJson(Object object) {
return MAPPER.writeValueAsString(object);
}
@SneakyThrows
public static <t> T toObject(String json, Class<t> clazz) {
return MAPPER.readValue(json, clazz);
}
public static <t> T toObject(Object object, Class<t> clazz) {
return MAPPER.convertValue(object, clazz);
}
@SneakyThrows
public static <t> T toObject(String json, TypeReference<t> type) {
return MAPPER.readValue(json, type);
}
public static <t> T toObject(Object object, TypeReference<t> type) {
return MAPPER.convertValue(object, type);
}
}
</t></t></t></t></t></t></t></t></zoneddatetime></zoneddatetime>
Original: https://www.cnblogs.com/ylty/p/13673445.html
Author: 风小雅
Title: Jackson通用工具类
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