无法加载资源:服务器响应状态为406(不可接受)

时间:2012-12-30 03:41:26

标签: spring dependency-injection spring-3

基于我之前的question,我已将Spring框架从3.0.2升级到3.2.0,原因在于此question(Spring 3.0.2导致上传多个问题)文件,因为有一个长期存在的错误)。

使用较新的版本,一切正常JSON。在回复时,Google Chrome会显示此错误。

  

无法加载资源:服务器响应状态为406   (不可接受)

我尝试按照dispatcher-servlet.xml文件中的指定here进行操作,例如,

<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
  <property name="mediaTypes">
    <map>
      <entry key="atom" value="application/atom+xml"/>
      <entry key="html" value="text/html"/>
      <entry key="json" value="application/json"/>
    </map>
  </property>
  <property name="viewResolvers">
    <list>
      <bean class="org.springframework.web.servlet.view.BeanNameViewResolver"/>
      <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
      </bean>
    </list>
  </property>
  <property name="defaultViews">
    <list>
      <bean class="org.springframework.web.servlet.view.json.MappingJackson2JsonView" />
    </list>
  </property>
</bean>

并以保存xml文件后的异常结束

  

java.lang.ClassCastException java.lang.String无法强制转换为   org.springframework.http.MediaType


如果有人需要查看,dispatcher-servelet.xml文件的完整内容如下所示。

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"

       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"

       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
       http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">


    <context:component-scan base-package="controller" />
    <context:component-scan base-package="validatorbeans" />
    <mvc:annotation-driven />




<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
  <property name="mediaTypes">
    <map>
      <entry key="atom" value="application/atom+xml"/>
      <entry key="html" value="text/html"/>
      <entry key="json" value="application/json"/>
    </map>
  </property>
  <property name="viewResolvers">
    <list>
      <bean class="org.springframework.web.servlet.view.BeanNameViewResolver"/>
      <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
      </bean>
    </list>
  </property>
  <property name="defaultViews">
    <list>
      <bean class="org.springframework.web.servlet.view.json.MappingJackson2JsonView" />
    </list>
  </property>
</bean>

    <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>
    <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="index.htm">indexController</prop>

            </props>
        </property>
    </bean>

<!--<bean id="viewResolver"
       class="org.springframework.web.servlet.view.InternalResourceViewResolver"
       p:prefix="/WEB-INF/jsp/"
       p:suffix=".jsp" />

       Initially this bean was mentioned like this was given a comment. It is specified as above-->

    <bean name="indexController"
          class="org.springframework.web.servlet.mvc.ParameterizableViewController"
          p:viewName="index" />
</beans>

如何解决此异常? Google搜索results此异常无法向我提供具体的参考资料。


修改

根据this配置,我现在有以下XML映射。

<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
    <property name="order" value="1" />
    <property name="contentNegotiationManager">
        <bean class="org.springframework.web.accept.ContentNegotiationManager">
            <constructor-arg>
                <bean class="org.springframework.web.accept.PathExtensionContentNegotiationStrategy">
                    <constructor-arg>
                        <map>
                            <entry key="json" value="application/json"/>
                            <entry key="xml" value="application/xml"/>
                            <!--<entry key="html" value="text/html"/>
                            <entry key="atom" value="application/atom+xml"/-->
                        </map>
                    </constructor-arg>
                </bean>
            </constructor-arg>
        </bean>
    </property>


    <property name="defaultViews">
        <list>
            <!-- JSON View -->
            <bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />

            <!-- XML View -->
            <bean class="org.springframework.web.servlet.view.xml.MarshallingView">
                <constructor-arg>
                    <bean class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
                        <property name="packagesToScan">
                            <list>
                                <value>documentLoader.domain</value>
                            </list>
                        </property>
                    </bean>
                </constructor-arg>
            </bean>
        </list>
    </property>
</bean>

<bean id="viewResolver"
      class="org.springframework.web.servlet.view.InternalResourceViewResolver"
      p:prefix="/WEB-INF/jsp/"
      p:suffix=".jsp" />

并且ClassCastException消失但JSON仍无法正常工作。我仍然得到同样的错误,

  

无法加载资源:服务器响应状态为406   (不可接受)

还剩下什么?仍然可以看到一个jira问题。

注意:我在类路径上有Jackson 1.9.8(其下载page)库。使用Jackson 2.1.1时,它无法在运行时抛出以下异常。

  

org.springframework.beans.factory.BeanCreationException:错误   用名字创建bean   'org.springframework.web.servlet.view.ContentNegotiatingViewResolver#0'   在ServletContext资源[/WEB-INF/dispatcher-servlet.xml]中定义:   无法创建内部bean   'org.springframework.web.servlet.view.json.MappingJacksonJsonView#bb314f'   类型   [org.springframework.web.servlet.view.json.MappingJacksonJsonView]   用key [0]设置bean属性'defaultViews';嵌套   异常是org.springframework.beans.factory.BeanCreationException:   使用名称创建bean时出错   'org.springframework.web.servlet.view.json.MappingJacksonJsonView#bb314f'   在ServletContext资源[/WEB-INF/dispatcher-servlet.xml]中定义:   bean的实例化失败;嵌套异常是   org.springframework.beans.BeanInstantiationException:不能   实例化bean类   [org.springframework.web.servlet.view.json.MappingJacksonJsonView]:   构造函数抛出异常; 嵌套异常是   java.lang.NoClassDefFoundError:org / codehaus / jackson / map / ObjectMapper

因为Jackson 2.1.1在另一个包中有ObjectMapper类 - com.fasterxml.jackson.databind.ObjectMapper。是什么方式?

3 个答案:

答案 0 :(得分:4)

最好在MediaType类

中引用常量
<constructor-arg>
    <map>
        <entry key="json">
            <util:constant static-field="org.springframework.http.MediaType.APPLICATION_JSON_VALUE" />
        </entry>
        <entry key="xml">
            <util:constant static-field="org.springframework.http.MediaType.APPLICATION_ATOM_XML_VALUE" />
        </entry>
    </map>
</constructor-arg>

您还需要包含util schema

<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd">

答案 1 :(得分:2)

您应该添加对ContentNegotiatingViewResolver的引用。 替换

<mvc:annotation-driven />

通过

<mvc:annotation-driven content-negotiation-manager="contentNegotiationManager" />

并将id添加到bean定义中:

<bean id="contentNegotiationManager"  class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">

此外,您需要将架构位置更新为3.2。

xsi:schemaLocation="
    http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd

答案 2 :(得分:1)

当您尝试将mediaTypes属性设置为ContentNegotiatingViewResolver时会发生异常,因为该值不是像您所想的那样的“text / html”字符串。这是一种不同的类型MediaType

而是指定类似的内容。

<bean id="atomXml" class="org.springframework.http.MediaType">
<constructor-arg><value><![CDATA[application/atom+xml]]></value></constructor-arg>
</bean>

和其他豆类似。


如果要设置mediaTypes,请将上面创建的bean注入ContentNegotiatingViewResolver

<property name="mediaTypes">
    <map>
      <entry key="atom" value-ref="atomXml"/>
    </map>
</property>

定义其他相关bean并修复与上述配置相关的任何语法问题留给您。