对于部分返回DateTime的项目，只需要在指定属性上添加@JsonSerialize 使用自定义的json转换格式即可自定义返回DateTime格式
但是对于项目中返回有多个DateTime字段来说，上面的方法明显不适用，这时需要自定义全局的DateTime转换器：
1、配置文件：
<!– 采用SpringMVC自带的JSON转换工具，支持@ResponseBody注解 –><beanclass=" org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"><property name="messageConverters"><list><ref bean="mappingJacksonHttpMessageConverter" /></list></property></bean> <!– 避免IE执行AJAX时,返回JSON出现下载文件 –><bean id="mappingJacksonHttpMessageConverter"class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"><property name="supportedMediaTypes"><list><value>application/json;charset=UTF-8</value><value>text/html;charset=UTF-8</value></list></property><property name="objectMapper"><bean class="com.cml.mvc.framework.converter.DateTimeConverter"></bean></property></bean>
主要是在mappingJacksonHttpMessageConverter中自定义objectMapper
2、下载需要的jar
<dependency><groupId>com.fasterxml.jackson.datatype</groupId><artifactId>jackson-datatype-joda</artifactId><version>${jackson.mapper}</version></dependency>3、自己实现ObjectMapperpublic class DateTimeConverter extends ObjectMapper {private static final long serialVersionUID = 1L;public DateTimeConverter() {this.registerModule(new BaseJodaModule());this.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);}}BaseJodaModule主要是修改com.fasterxml.jackson.datatype.joda.JodaModule代码，只需要在DateTime注册转换器上传入自定义日期格式即可
4、BaseJodaModule
package com.cml.mvc.framework.converter.datetime;import org.joda.time.DateMidnight;import org.joda.time.DateTime;import org.joda.time.DateTimeZone;import org.joda.time.Duration;import org.joda.time.Instant;import org.joda.time.Interval;import org.joda.time.LocalDate;import org.joda.time.LocalDateTime;import org.joda.time.LocalTime;import org.joda.time.MonthDay;import org.joda.time.Period;import org.joda.time.ReadableDateTime;import org.joda.time.ReadableInstant;import org.joda.time.ReadablePeriod;import org.joda.time.YearMonth;import org.joda.time.format.DateTimeFormat;import com.fasterxml.jackson.databind.JsonDeserializer;import com.fasterxml.jackson.databind.JsonSerializer;import com.fasterxml.jackson.databind.module.SimpleModule;import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;import com.fasterxml.jackson.datatype.joda.PackageVersion;import com.fasterxml.jackson.datatype.joda.cfg.JacksonJodaDateFormat;import com.fasterxml.jackson.datatype.joda.deser.DateMidnightDeserializer;import com.fasterxml.jackson.datatype.joda.deser.DateTimeDeserializer;import com.fasterxml.jackson.datatype.joda.deser.DateTimeZoneDeserializer;import com.fasterxml.jackson.datatype.joda.deser.DurationDeserializer;import com.fasterxml.jackson.datatype.joda.deser.InstantDeserializer;import com.fasterxml.jackson.datatype.joda.deser.IntervalDeserializer;import com.fasterxml.jackson.datatype.joda.deser.LocalDateDeserializer;import com.fasterxml.jackson.datatype.joda.deser.LocalDateTimeDeserializer;import com.fasterxml.jackson.datatype.joda.deser.LocalTimeDeserializer;import com.fasterxml.jackson.datatype.joda.deser.MonthDayDeserializer;import com.fasterxml.jackson.datatype.joda.deser.PeriodDeserializer;import com.fasterxml.jackson.datatype.joda.deser.YearMonthDeserializer;import com.fasterxml.jackson.datatype.joda.deser.key.DateTimeKeyDeserializer;import com.fasterxml.jackson.datatype.joda.deser.key.LocalDateKeyDeserializer;import com.fasterxml.jackson.datatype.joda.deser.key.LocalDateTimeKeyDeserializer;import com.fasterxml.jackson.datatype.joda.deser.key.LocalTimeKeyDeserializer;import com.fasterxml.jackson.datatype.joda.ser.DateMidnightSerializer;import com.fasterxml.jackson.datatype.joda.ser.DateTimeSerializer;import com.fasterxml.jackson.datatype.joda.ser.DateTimeZoneSerializer;import com.fasterxml.jackson.datatype.joda.ser.DurationSerializer;import com.fasterxml.jackson.datatype.joda.ser.InstantSerializer;import com.fasterxml.jackson.datatype.joda.ser.IntervalSerializer;import com.fasterxml.jackson.datatype.joda.ser.LocalDateSerializer;import com.fasterxml.jackson.datatype.joda.ser.LocalDateTimeSerializer;import com.fasterxml.jackson.datatype.joda.ser.LocalTimeSerializer;import com.fasterxml.jackson.datatype.joda.ser.PeriodSerializer;@SuppressWarnings("deprecation")public class BaseJodaModule extends SimpleModule {private static final long serialVersionUID = 1L;public static final String DATE_TIME_PATTERN = "yyyyMMddHHmmss";private static final JacksonJodaDateFormat DATE_TIME_FORMATTER = new JacksonJodaDateFormat(DateTimeFormat.forPattern(DATE_TIME_PATTERN).withZoneUTC());@SuppressWarnings({ "unchecked" })public BaseJodaModule() {super(PackageVersion.VERSION);// first deserializersaddDeserializer(DateMidnight.class, new DateMidnightDeserializer());addDeserializer(DateTime.class,DateTimeDeserializer.forType(DateTime.class));addDeserializer(DateTimeZone.class, new DateTimeZoneDeserializer());addDeserializer(Duration.class, new DurationDeserializer());addDeserializer(Instant.class, new InstantDeserializer());addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer());addDeserializer(LocalDate.class, new LocalDateDeserializer());addDeserializer(LocalTime.class, new LocalTimeDeserializer());JsonDeserializer<?> deser = new PeriodDeserializer(true);addDeserializer(Period.class, (JsonDeserializer<Period>) deser);addDeserializer(ReadablePeriod.class, new PeriodDeserializer(false));addDeserializer(ReadableDateTime.class,DateTimeDeserializer.forType(ReadableDateTime.class));addDeserializer(ReadableInstant.class,DateTimeDeserializer.forType(ReadableInstant.class));addDeserializer(Interval.class, new IntervalDeserializer());addDeserializer(MonthDay.class, new MonthDayDeserializer());addDeserializer(YearMonth.class, new YearMonthDeserializer());// then serializers:final JsonSerializer<Object> stringSer = ToStringSerializer.instance;addSerializer(DateMidnight.class, new DateMidnightSerializer());//主要是修改这里，自定义日期格式addSerializer(DateTime.class, new DateTimeSerializer(DATE_TIME_FORMATTER));addSerializer(DateTimeZone.class, new DateTimeZoneSerializer());addSerializer(Duration.class, new DurationSerializer());addSerializer(Instant.class, new InstantSerializer());addSerializer(LocalDateTime.class, new LocalDateTimeSerializer());addSerializer(LocalDate.class, new LocalDateSerializer());addSerializer(LocalTime.class, new LocalTimeSerializer());addSerializer(Period.class, new PeriodSerializer());addSerializer(Interval.class, new IntervalSerializer());addSerializer(MonthDay.class, stringSer);addSerializer(YearMonth.class, stringSer);// then key deserializersaddKeyDeserializer(DateTime.class, new DateTimeKeyDeserializer());addKeyDeserializer(LocalTime.class, new LocalTimeKeyDeserializer());addKeyDeserializer(LocalDate.class, new LocalDateKeyDeserializer());addKeyDeserializer(LocalDateTime.class,new LocalDateTimeKeyDeserializer());}// yes, will try to avoid duplicate registations (if MapperFeature enabled)@Overridepublic String getModuleName() {return getClass().getSimpleName();}@Overridepublic int hashCode() {return getClass().hashCode();}@Overridepublic boolean equals(Object o) {return this == o;}}自定义全局DateTime json格式ok，但是个人感觉太复杂了，设置个日期格式而已，要配置，自己实现这么多步骤！期待更简单的全局配置方式。。。
，明天的希望，让我们忘了今天的痛苦
