spring 4.3 json解析错误

我用Spring MVC转换成json显示的时候出现这个错误，这个是怎么回事啊




该怎么解决

你添加了转换json的相关lib包吗 jackson

Spring配置文件是不是不全呢？加上下面的配置试试

    <!-- rest json related... start -->
    <bean id="mappingJacksonHttpMessageConverter"
          class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>application/json;charset=UTF-8</value>
            </list>
        </property>
    </bean>
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="mappingJacksonHttpMessageConverter"/>
            </list>
        </property>
    </bean>
    <!-- rest json related... end -->

或许需要添加这些包中的一些包

compile "com.fasterxml.jackson.core:jackson-core:${jackson_version}"
compile "com.fasterxml.jackson.core:jackson-annotations:${jackson_version}"
compile "com.fasterxml.jackson.core:jackson-databind:${jackson_version}"
compile "com.fasterxml.jackson.dataformat:jackson-dataformat-xml:${jackson_version}"
compile "com.fasterxml.jackson.datatype:jackson-datatype-joda:${jackson_version}"

如楼上所述，缺少json解析依赖包！