问题:由于JS中Number的精度为16位(最大位17位,第17位精度不准),我们的ID用的Number 18位,传到客户端会丢失最后两位;
解决方式:Long序列化成String,传到客户端;
注意:客户端取到的Long对应类型是String,做判断或者计算时要注意;
springmvc.xml
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>
<bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
<property name="objectMapper" ref="customObjectMapper"/>
<property name="supportedMediaTypes">
<list>
<value>application/json;charset=UTF-8</value>
<value>text/html;charset=UTF-8</value>
</list>
</property>
</bean>
<bean id="customObjectMapper" class="com.nankang.cati.nweb.filter.CustomObjectMapper"/>
public class CustomObjectMapper extends ObjectMapper {
public CustomObjectMapper() {
super();
// 设置日期转换yyyy-MM-dd HH:mm:ss
setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));
// 序列换成json时,将所有的long变成string,因为js中得数字类型不能包含所有的java long值
SimpleModule simpleModule = new SimpleModule("LongModule", new Version(1, 0, 0, ""));
simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
simpleModule.addSerializer(Long.TYPE, ToStringSerializer.instance);
registerModule(simpleModule);
}
}