``` xml application/json;charset=UTF-8 text/plain;charset=UTF-8 <-对日期进行转化的-> ``` ``` java import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.module.SimpleModule; import com.fasterxml.jackson.databind.ser.std.ToStringSerializer; public class LongToStringMapper extends ObjectMapper { public LongToStringMapper() { super(); SimpleModule simpleModule = new SimpleModule(); simpleModule.addSerializer(Long.class, ToStringSerializer.instance); simpleModule.addSerializer(Long.TYPE, ToStringSerializer.instance); registerModule(simpleModule); } } ```