Spring中@ResponseBody 返回json字串date型別變成long型的問題
阿新 • • 發佈:2019-01-05
以前,關於返回json字串date型別變成long(時間戳)型別,一直存在困難,兩個方面,1,通過前端的格式轉化;2,同事date轉成string型別,再做傳值,如此既降低編碼效率又不利於全端開發人員的工作負擔。為此今天做如下總結;
第一步:設計組價
package edu.sjtu.nicman.web.controller.config;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.codehaus.jackson.JsonGenerator ;
import org.codehaus.jackson.JsonProcessingException;
import org.codehaus.jackson.map.JsonSerializer;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.map.SerializerProvider;
import org.codehaus.jackson.map.ser.CustomSerializerFactory;
import org.springframework.stereotype.Component ;
@Component("customObjectMapper")
public class CustomObjectMapper extends ObjectMapper {
public CustomObjectMapper() {
CustomSerializerFactory factory = new CustomSerializerFactory();
factory.addGenericMapping(Date.class, new JsonSerializer<Date>() {
@Override
public void serialize(Date arg0, JsonGenerator arg1,
SerializerProvider arg2) throws IOException,
JsonProcessingException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss" );
arg1.writeString(sdf.format(arg0));
}
});
this.setSerializerFactory(factory);
}
}
第二步:元件配置
以下是對json格式和date型別時間轉化的配置
<!-- 以下為SpringMVC配置 -->
<mvc:annotation-driven>
<!-- 返回json資料,@response使用 -->
<mvc:message-converters register-defaults="true">
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>text/html;charset=UTF-8</value>
<value>application/json;charset=UTF-8</value>
</list>
</property>
</bean>
<bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
<property name="objectMapper" ref="customObjectMapper"></property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
第三步:在需要轉換格式的欄位添加註解
@DateTimeFormat(pattern="yyyy-MM-dd HH:mm:ss")
@JsonFormat(pattern="yyyy-MM-dd HH:mm:ss",timezone = "GMT+8")
private Date time0;