小编use*_*721的帖子

我正在Spring框架中开发一个Web应用程序.当请求作为ModelAndView respose类型提供时.它工作得很好但是当我尝试以json的形式提供响应时,它会抛出一个错误

例外

org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.NoSuchMethodError: org.codehaus.jackson.map.SerializationConfig.isEnabled(Lorg/codehaus/jackson/map/SerializationConfig$Feature;)Z
org.springframework.web.servlet.DispatcherServlet.triggerAfterCompletionWithError(DispatcherServlet.java:1259)

根本原因

java.lang.NoSuchMethodError: org.codehaus.jackson.map.SerializationConfig.isEnabled(Lorg/codehaus/jackson/map/SerializationConfig$Feature;)Z
org.springframework.http.converter.json.MappingJacksonHttpMessageConverter.writeInternal(MappingJacksonHttpMessageConverter.java:193)

控制器中的方法

@RequestMapping(value="/getFBFriendsList",method=RequestMethod.GET)<br/>
public @ResponseBody List<String> getStatesList(HttpServletRequest req){<br/>
    List<String> statesList = null;
    try{<br/>
    statesList = new ArrayList<String>();<br/>
    //..here i am getting states from datebase and adding to list<br/>
    }<br/>
    catch(Exception e){}<br/>
    return statesList;
}

调度程序Servlet中的配置

<bean id="jsonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" >
    <property name="supportedMediaTypes" value="application/json" />
</bean>

<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
    <property name="messageConverters">
        <list>
            <ref bean="jsonHttpMessageConverter" />
        </list>
    </property>
</bean>

<bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver">
    <property name="viewClass">
        <value>
            org.springframework.web.servlet.view.tiles2.TilesView
        </value>
    </property> …