集成SSJ(spring+springmvc+jpa)框架时遇到的No serializer问题

第一种方案：

   在类上加注解@JsonIgnoreProperties(value={"hibernateLazyInitializer","handler","fieldHandler"})

第二种方案：

    第一步：创建一个类    

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);
        // 设置 SerializationFeature.FAIL_ON_EMPTY_BEANS 为 false
        this.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
    }
}

    第二步：在applicationContext-mvc.xml中配置，在支持springmvc注解中加上如下代码

<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 为我们自定义扩展后的 CustomMapper,解决了返回对象有关系对象的报错问题 -->
            <property name="objectMapper">
               <!--这里就是你创建的类的完全限定名 -->
                <bean class="com.zh.aisell.common.CustomMapper"></bean>
            </property>
        </bean>
    </mvc:message-converters>
</mvc:annotation-driven>