Spring配置 - mvc：註解驅動，AnnotationMethodHandlerAdapter和JSON

Question

在此先感謝您的幫助。

我想讓我的控制器方法之一返回JSON。用一個簡單的測試出發：

@RequestMapping(value="/myReqPath", method=RequestMethod.GET) 
@ResponseBody 
public Map<String, String> myJsonMethod() { 

    Map<String, String> response = new TreeMap<String, String>(); 
    response.put("test", "test"); 

    return response; 

} 

這是我的理解是，我需要<mvc:annotation-driven/>添加到我的servlet上下文來做到這一點。問題是當我添加它時，它會破壞我的自定義AnnotationMethodHandlerAdapter。 ？

[B]我如何提取和添加的<mvc:annotation-driven/>所需要的零部件從控制器返回JSON [/ B]

這裏是我的servlet配置的相關部分：

<!--Skipping this for now... 
<mvc:annotation-driven/> 
--> 

<!-- JSON Marshaling --> 
<util:constant id="jsonBasicClassIntrospector" 
    static-field="org.codehaus.jackson.map.introspect.BasicClassIntrospector.instance" /> 
<bean id="jsonJaxbAnnotationIntrospector" 
    class="org.codehaus.jackson.xc.JaxbAnnotationIntrospector" /> 
<bean id="jsonVisibilityChecker" 
    class="org.codehaus.jackson.map.introspect.VisibilityChecker.Std" 
    factory-method="defaultInstance" /> 
<bean id="jsonDefaultTypeFactory" 
    class="org.codehaus.jackson.map.type.TypeFactory" 
    factory-method="defaultInstance" /> 
<bean id="jsonObjectMapper" class="org.codehaus.jackson.map.ObjectMapper"> 
    <property name="serializationConfig"> 
     <bean class="org.codehaus.jackson.map.SerializationConfig"> 
      <constructor-arg ref="jsonBasicClassIntrospector" /> 
      <constructor-arg ref="jsonJaxbAnnotationIntrospector" /> 
      <constructor-arg ref="jsonVisibilityChecker" /> 
      <constructor-arg><null/></constructor-arg> 
      <constructor-arg><null/></constructor-arg> 
      <constructor-arg ref="jsonDefaultTypeFactory" /> 
      <constructor-arg><null/></constructor-arg> 
     </bean> 
    </property> 
    <property name="deserializationConfig"> 
     <bean class="org.codehaus.jackson.map.DeserializationConfig"> 
      <constructor-arg ref="jsonBasicClassIntrospector" /> 
      <constructor-arg ref="jsonJaxbAnnotationIntrospector" /> 
      <constructor-arg ref="jsonVisibilityChecker" /> 
      <constructor-arg><null/></constructor-arg> 
      <constructor-arg><null/></constructor-arg> 
      <constructor-arg ref="jsonDefaultTypeFactory" /> 
      <constructor-arg><null/></constructor-arg> 
     </bean> 
    </property> 
</bean> 

... 

<!-- My custom AnnotationMethodHandlerAdapter... --> 
<bean id="sessionArgResolver" class="com.SessionParamArgumentResolver"/> 
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> 
    <property name="customArgumentResolver" ref="sessionArgResolver"/> 
</bean> 

既然這樣，我的控制器方法調用但是，瀏覽器返回HTTP狀態406： 406無法接受 - [URL] HTTP：//本地主機：8080 /對myApp/myReqPath [/ URL]

Answer 1

如果你已經有一個定製AnnotationMethodHandlerAdapter十月您可以添加一個HttpMessageConverter s的列表：

<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> 
    <property name="customArgumentResolver" ref="sessionArgResolver"/> 
    <property name = "messageConverters"> 
     <list> 
      <bean 
       class = "org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"> 
       <property name = "objectMapper" ref = "jsonObjectMapper" /> 
      </bean> 
     </list> 
    </property> 
</bean>