在配置类中扩展SpringMVC消息转换器对日期类型进行格式处理
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对象转换器
*javapackage com.sky.json; import com.fasterxml.jackson.databind.DeserializationFeature; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.module.SimpleModule; import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer; import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer; import com.fasterxml.jackson.datatype.jsr310.deser.LocalTimeDeserializer; import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer; import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer; import com.fasterxml.jackson.datatype.jsr310.ser.LocalTimeSerializer; import java.time.LocalDate; import java.time.LocalDateTime; import java.time.LocalTime; import java.time.format.DateTimeFormatter; import static com.fasterxml.jackson.databind.DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES; /** * 对象映射器:基于jackson将Java对象转为json,或者将json转为Java对象 * 将JSON解析为Java对象的过程称为 [从JSON反序列化Java对象] * 从Java对象生成JSON的过程称为 [序列化Java对象到JSON] */ public class JacksonObjectMapper extends ObjectMapper { public static final String DEFAULT_DATE_FORMAT = "yyyy-MM-dd"; //public static final String DEFAULT_DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss"; public static final String DEFAULT_DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm"; public static final String DEFAULT_TIME_FORMAT = "HH:mm:ss"; public JacksonObjectMapper() { super(); //收到未知属性时不报异常 this.configure(FAIL_ON_UNKNOWN_PROPERTIES, false); //反序列化时,属性不存在的兼容处理 this.getDeserializationConfig().withoutFeatures(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES); SimpleModule simpleModule = new SimpleModule() .addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT))) .addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT))) .addDeserializer(LocalTime.class, new LocalTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT))) .addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT))) .addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT))) .addSerializer(LocalTime.class, new LocalTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT))); //注册功能模块 例如,可以添加自定义序列化器和反序列化器 this.registerModule(simpleModule); } }
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SpringMVC 框架的消息转换器
*java/** * 扩展Spring MVC框架的消息转化器 * @param converters */ protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) { log.info("扩展消息转换器..."); //创建一个消息转换器对象 MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter(); //需要为消息转换器设置一个对象转换器,对象转换器可以将Java对象序列化为json数据 converter.setObjectMapper(new JacksonObjectMapper()); //将自己的消息转化器加入容器中 converters.add(0,converter); }