spring-mvc 3.* 多视图解析配置实例 ContentNegotiatingViewResolver

一、起因 
    从spring 3.1.0升级到spring 3.2.0时，配置文件servlet.xml中出错。

错误信息：

1. java.lang.String cannot be cast to org.springframework.http.MediaType

错误原因：是spring3.2开始不推荐使用setMediaTypes等直接设置这些数据， 而是通过ContentNegotiationManager（ContentNegotiationManagerFactoryBean），所以采用map标签的方式直接转换会出现异常信息。

二、ContentNegotiatingViewResolver 解释

引用

http://yidwo.iteye.com/blog/1884061

三、配置实例 
1. spring 3.1.0

1. <bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
2. <property name="ignoreAcceptHeader" value="true"/>
3. <property name="defaultContentType" value="text/html"/>
4. <property name="mediaTypes">
5. <map>
6. <entry key="json" value="application/json" />
7. <entry key="xml" value="application/xml" />
8. </map>
9. </property>
10. <property name="viewResolvers">
11. <list>
12. <bean class="org.springframework.web.servlet.view.BeanNameViewResolver" />
13. <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
14. <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
15. <property name="prefix" value="/WEB-INF/pages/"/>
16. <property name="suffix" value=".jsp"></property>
17. </bean>
18. </list>
19. </property>
20. <property name="defaultViews">
21. <list>
22. <bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
23. <bean class="org.springframework.web.servlet.view.xml.MarshallingView" >
24. <property name="marshaller">
25. <bean class="org.springframework.oxm.xstream.XStreamMarshaller"/>
26. </property>
27. </bean>
28. </list>
29. </property>
30. </bean>

2. spring 3.1.0/3.2.0

1. <bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
2. <property name="ignoreAcceptHeader" value="true"/>
3. <property name="defaultContentType" value="text/html"/>
4. <property name="mediaTypes">
5. <value>
6. json=application/json,
7. xml=application/xml
8. </value>
9. </property>
10. <property name="viewResolvers">
11. <list>
12. <bean class="org.springframework.web.servlet.view.BeanNameViewResolver" />
13. <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
14. <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
15. <property name="prefix" value="/WEB-INF/pages/"/>
16. <property name="suffix" value=".jsp"></property>
17. </bean>
18. </list>
19. </property>
20. <property name="defaultViews">
21. <list>
22. <bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
23. <bean class="org.springframework.web.servlet.view.xml.MarshallingView" >
24. <property name="marshaller">
25. <bean class="org.springframework.oxm.xstream.XStreamMarshaller"/>
26. </property>
27. </bean>
28. </list>
29. </property>
30. </bean>

3. spring 3.2.0

1. <bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
2. <property name="ignoreAcceptHeader" value="true"/>
3. <property name="defaultContentType" value="text/html"/>
4. <property name="contentNegotiationManager">
5. <bean class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
6. <property name="ignoreAcceptHeader" value="true"/>
7. <property name="defaultContentType" value="text/html"/>
8. <property name="mediaTypes">
9. <map>
10. <entry key="json" value="application/json" />
11. <entry key="xml" value="application/xml" />
12. </map>
13. </property>
14. </bean>
15. </property>
16. <property name="viewResolvers">
17. <list>
18. <bean class="org.springframework.web.servlet.view.BeanNameViewResolver" />
19. <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
20. <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
21. <property name="prefix" value="/WEB-INF/pages/"/>
22. <property name="suffix" value=".jsp"></property>
23. </bean>
24. </list>
25. </property>
26. <property name="defaultViews">
27. <list>
28. <bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
29. <bean class="org.springframework.web.servlet.view.xml.MarshallingView" >
30. <property name="marshaller">
31. <bean class="org.springframework.oxm.xstream.XStreamMarshaller"/>
32. </property>
33. </bean>
34. </list>
35. </property>
36. </bean>

4. spring 3.2.x (推荐)

1. <bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
2. <property name="ignoreAcceptHeader" value="true"/>
3. <property name="defaultContentType" value="text/html"/>
4. <property name="contentNegotiationManager">
5. <bean class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
6. <property name="ignoreAcceptHeader" value="true"/>
7. <property name="defaultContentType" value="text/html"/>
8. <property name="mediaTypes">
9. <props>
10. <prop key="json">application/json</prop>
11. <prop key="xml">application/xml</prop>
12. </props>
13. </property>
14. </bean>
15. </property>
16. <property name="viewResolvers">
17. <list>
18. <bean class="org.springframework.web.servlet.view.BeanNameViewResolver" />
19. <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
20. <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
21. <property name="prefix" value="/WEB-INF/pages/"/>
22. <property name="suffix" value=".jsp"></property>
23. </bean>
24. </list>
25. </property>
26. <property name="defaultViews">
27. <list>
28. <bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
29. <bean class="org.springframework.web.servlet.view.xml.MarshallingView" >
30. <property name="marshaller">
31. <bean class="org.springframework.oxm.xstream.XStreamMarshaller"/>
32. </property>
33. </bean>
34. </list>
35. </property>
36. </bean>