<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 =http://www.mamicode.com/ 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>