全局配置  全局配置  全局配置  Jackson时间格式化

mvc  Jackson 返回时间时，默认会返回时间戳或者是 2018-08-30T12:12:12CST格式的时间字符串

spring.jackson.date-format=yyyy-MM-dd HH:mm:ss spring.jackson.time-zone=GMT+8

配置了以上参数 只能对Date 类型的时间格式化  对于 LocalDateTime ,Instant 并没有什么效果 只需要添加以下配置就可以解决

@Configuration public class Java8TimeConfig {
      @Value("${spring.jackson.date-format}")     private String formatValue;     @Bean(name = "format")     DateTimeFormatter format() {
          return DateTimeFormatter.ofPattern(formatValue);     }     @Bean     public ObjectMapper serializingObjectMapper(@Qualifier("format") DateTimeFormatter format) {
          JavaTimeModule javaTimeModule = new JavaTimeModule();         javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(format));         javaTimeModule.addSerializer(Instant.class, new InstantCustomSerializer(format));         javaTimeModule.addSerializer(Date.class, new DateSerializer(false, new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")));         ObjectMapper mapper = new ObjectMapper()                 .registerModule(new ParameterNamesModule())                 .disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS)                 .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)                 .registerModule(javaTimeModule);         return mapper;     }     class InstantCustomSerializer extends JsonSerializer
    
      {
          private DateTimeFormatter format;         private InstantCustomSerializer(DateTimeFormatter formatter) {
              this.format = formatter;         }         @Override         public void serialize(Instant instant, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
              if (instant == null) {
                  return;             }             String jsonValue = format.format(instant.atZone(ZoneId.systemDefault()));             jsonGenerator.writeString(jsonValue);         }     } } 需要引入相关jar包 下面是pom文件
    

     
         
     
      com.fasterxml.jackson.module
          
     
      jackson-module-parameter-names
      
     
         
     
      com.fasterxml.jackson.datatype
          
     
      jackson-datatype-jdk8
      
     
         
     
      com.fasterxml.jackson.datatype
          
     
      jackson-datatype-jsr310