Spring不解析具有相同URL前缀的JSP和JSON

Question

我的目标：

1. <代码>http://host:port/myApp/about返回一个名为about的jsp页面。jsp

我的web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" ...>
<context-param>
    <param-name>log4jConfigLocation</param-name>
    <param-value>classpath:log4j.xml</param-value>
</context-param>
<context-param>
    <param-name>log4jExposeWebAppRoot</param-name>
    <param-value>false</param-value>
</context-param>
<listener>
    <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>
<servlet>
    <servlet-name>myApp</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            ...
        </param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>myApp</servlet-name>
    <url-pattern>/*</url-pattern>
</servlet-mapping>

<welcome-file-list>
    <welcome-file>index.html</welcome-file>
</welcome-file-list>
</web-app>

我的servlet.xml（使用Spring 3.0.3. RELEASE）：

<beans ...>

<mvc:annotation-driven />
<context:component-scan ... />

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <property name="maxUploadSize" value="15728640" /> <!-- 15 MB -->
    <property name="MaxInMemorySize" value="15728640" /> <!-- 15 MB -->
</bean>

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="order" value="1" />
    <property name="prefix" value="/WEB-INF/views/" />
    <property name="suffix" value=".jsp" />
</bean>

<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
    <property name="order" value="2" />
    <property name="mediaTypes">
        <map>
            <entry key="json" value="application/json" />
            <entry key="xml" value="application/xml" />
        </map>
    </property>
    <property name="defaultContentType" value="application/json" />
    <property name="defaultViews">
        <list>
            <bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
            <bean class="org.springframework.web.servlet.view.xml.MarshallingView">
                <constructor-arg>
                    <bean class="org.springframework.oxm.xstream.XStreamMarshaller" />
                </constructor-arg>
            </bean>
        </list>
    </property>
    <property name="ignoreAcceptHeader" value="true" />
</bean>
</beans>

我的控制器：

@Controller
@RequestMapping("about")
public class AboutController {

    @RequestMapping(method=GET)
    public String getStats() {
        return "about";
    }

    @RequestMapping(value="log", method=GET)
    public @ResponseBody List<String> getLog() {
        ...
    }
}

在服务器（jetty 6，servlet api 2.5）启动时，我看到：

INFO org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping - Mapped URL path [/about/log] onto handler [AboutController@63843ca4]
INFO org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping - Mapped URL path [/about/log.*] onto handler [AboutController@63843ca4]
INFO org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping - Mapped URL path [/about/log/] onto handler [AboutController@63843ca4]
INFO org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping - Mapped URL path [/about] onto handler [AboutController@63843ca4]
INFO org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping - Mapped URL path [/about.*] onto handler [AboutController@63843ca4]
INFO org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping - Mapped URL path [/about/] onto handler [AboutController@63843ca4]

上述目标的设置结果：

>

产生错误：

WARN org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/myApp/WEB-INF/views/about.jsp] in DispatcherServlet with name 'myApp'  

我检查/尝试过的事情：

>

WEB-INF/view/about.jsp确实存在

我已经在这两个方法的控制器中放置了断点，并且它们都被适当地调用；故障发生在退出我的控制器类后的某个时候

故意将InternalResourceViewResolver的顺序设置为第一。我知道Spring文档建议不要这样做，但是当我尝试将其放在最后时，我得到一个空的{}返回，我认为这是因为ContentNelis atingViewResolver拾取了“about”字符串并以某种方式解释它。我对顺序没有要求，但是ContentNelis atingViewResolver中的设置需要保持原样（除非绝对有必要更改）。

将web.xml中的url模式设置为

>

按预期工作

产生错误：

WARN org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/myApp/about/log.json] in DispatcherServlet with name 'myApp'

有趣的是，urlhttp://host:port/myApp/about/about/log适用于此url模式

所以，我有点纠结于要解决什么问题才能实现既定目标。




Answer 1

您是否有使用InternalResourceViewResolver的特定需求？

要配置jackson插件，我们只需要

 <mvc:annotation-driven />

尝试使用此XML

<beans ...>
 <context:annotation-config />
<mvc:annotation-driven />
<context:component-scan ... />

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <property name="maxUploadSize" value="15728640" /> <!-- 15 MB -->
    <property name="MaxInMemorySize" value="15728640" /> <!-- 15 MB -->
</bean>


<bean id="viewResolver"
      class="org.springframework.web.servlet.view.UrlBasedViewResolver">
    <property name="prefix" value="/WEB-INF/views/"/>
    <property name="suffix" value=".jsp"/>
</bean>
</beans>