1. 程式人生 > >整合SSJ(spring+springmvc+jpa)框架時遇到的No serializer問題

整合SSJ(spring+springmvc+jpa)框架時遇到的No serializer問題

   在類上加註解@JsonIgnoreProperties(value={"hibernateLazyInitializer","handler","fieldHandler"})

第二種方案:

    第一步:建立一個類    

package com.zh.aisell.common;

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.databind.ObjectMapper;
import 
com.fasterxml.jackson.databind.SerializationFeature; public class CustomMapper extends ObjectMapper { public CustomMapper() { this.setSerializationInclusion(JsonInclude.Include.NON_NULL); // 設定 SerializationFeature.FAIL_ON_EMPTY_BEANS 為 false this.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS
, false); } }

    第二步:在applicationContext-mvc.xml中配置,在支援springmvc註解中加上如下程式碼

<mvc:annotation-driven>
    <mvc:message-converters>
        <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
            <property 
name="supportedMediaTypes"> <list> <value>application/json; charset=UTF-8</value> <value>application/x-www-form-urlencoded; charset=UTF-8</value> </list> </property> <!-- No serializer:配置 objectMapper 為我們自定義擴充套件後的 CustomMapper,解決了返回物件有關係物件的報錯問題 --> <property name="objectMapper">                <!--這裡就是你建立的類的完全限定名 --> <bean class="com.zh.aisell.common.CustomMapper"></bean> </property> </bean> </mvc:message-converters> </mvc:annotation-driven>