在springmvc.xml中新增如下：

<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
           <property name="objectMapper">
               <bean class="com.fasterxml.jackson.databind.ObjectMapper">
                   <property name="serializationInclusion">
                       <value type="com.fasterxml.jackson.annotation.JsonInclude.Include">NON_NULL</value>
                   </property>
               </bean>
           </property>
        </bean>
 

但是有個問題就是以json作為引數的介面，bean必須和json對應好，否則會報

 at [Source: [email protected]; line: 1, column: 100] (through reference chain: com.neusoft.geexek.web.enroll.bean.

CompetitionRoadUser["IDNumber"]);

 nested exception is com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "IDNumber" (class com.neusoft.geexek.web.
 

enroll.bean.CompetitionRoadUser),

 not marked as ignorable (54 known properties: "remark", "sumAmount", "groupNum", "shoesSize", "userMapId", "isTeamLeader", "platForm", "payTime",

 "dateOfBirth", "email", 

"isPay", "contactsAddress", "cert", "origin", "isTeam", "clothingSize", "auditStatus", "callPhone", "roleId", "updateTime", "trueName", "gender",
 

 "idNumber", "degree", "lot", "bloodType", "teamId", "contactsPhone", "health", "serialNumber", "noteIsSend", "createTime", "city", "payOrigin",

 "contactsRelation", "extraPayAmount", "note", "address", "isDelete", "userName", "teamSave", "extraPays", "contactsName", "typeOfID", "userPayRelations",

 "registerId", "cmptId", "isCancel", "amount", "roadId", "team", "isIns", "markNo", "role"])
 at [Source: [email protected]; line: 1, column: 100] (through reference chain: 

com.neusoft.geexek.web.enroll.bean.CompetitionRoadUser["IDNumber"])

我傳遞的json格式的引數數：

{"remark":"[]","userName":"123123123","callPhone":"123123123123","typeOfID":"身份證","IDNumber":"123123123123123","gender":0,"roadId":8553,"userPayRelations":[],"idNumber":"123123123123","isIns":2}

去除這種錯誤的辦法：在bean上新增

@JsonIgnoreProperties(ignoreUnknown = true)