<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"  >

    <property name="ignoreDefaultModelOnRedirect" value="true" />

    <property name="messageConverters">

        <list>

            <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/>

        </list>

    </property>

</bean>

@JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL)

public class Message implements Serializable {

    private String code;

    private String text;

    private Object data;

    public String getCode() {

        return code;

    }

    public void setCode(String code) {

        this.code = code;

    }

    public String getText() {

        return text;

    }

    public void setText(String text) {

        this.text = text;

    }

    public Object getData() {

        return data;

    }

    public void setData(Object data) {

        this.data = data;

    }

}

<mvc:annotation-driven>

    <mvc:message-converters>

        <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">

            <property name="objectMapper">

                <bean class="com.fasterxml.jackson.databind.ObjectMapper">

                    <!-- 处理responseBody 里面日期类型 -->

                    <property name="dateFormat">

                        <bean class="java.text.SimpleDateFormat">

                            <constructor-arg type="java.lang.String" value="yyyy-MM-dd HH:mm:ss" />

                        </bean>

                    </property>

                    <!-- 为null字段时不显示 -->

                    <property name="serializationInclusion">

                        <value type="com.fasterxml.jackson.annotation.JsonInclude.Include">NON_NULL</value>

                    </property>

                </bean>

            </property>

        </bean>

    </mvc:message-converters>

</mvc:annotation-driven>