Spring框架500 406

當時在返回一個JSONObject時報406，原因是隻導入了fastjson的jar報但是並沒有如下配置，配置如下：

所以返回類型有問題，做了如下問題後會報500，因爲需要導入三個json有關的jar包，jar包如下

 

<mvc:annotation-driven>
        <mvc:message-converters>
            <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                <property name="supportedMediaTypes">
                    <list>
                        <value>text/plain;charset=UTF-8</value>
                        <value>text/html;charset=UTF-8</value>
                        <value>text/json;charset=UTF-8</value>
                        <value>application/json;charset=UTF-8</value>
                    </list>
                </property>
            </bean>
            <bean id="mappingJacksonHttpMessageConverter"
                  class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                <property name="supportedMediaTypes">
                    <list>
                        <value>application/json;charset=UTF-8</value>
                    </list>
                </property>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>