Spring：当url包含点和正确扩展名时，无法解析具有名称的视图

Question

这是我的控制器

@RequestMapping(value = "/download/{product}/{topic}/{key:.*}")
//@ResponseBody
public AjaxResult download(@PathVariable("product") String product, @PathVariable("topic") String topic,
    @PathVariable("key") String key, HttpServletRequest request, HttpServletResponse response) {

<bean
    class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
    <property name="viewResolvers">
          <list>
            <bean class="org.springframework.web.servlet.view.BeanNameViewResolver"/>
        </list>      
    </property>
    <property name="defaultViews">
        <list>
            <bean
                class="org.springframework.web.servlet.view.json.MappingJackson2JsonView" />
        </list>
    </property>
</bean>

<mvc:annotation-driven>
    <mvc:message-converters register-defaults="false">
        <bean id="fastJsonHttpMessageConverter"
            class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
            <property name="supportedMediaTypes">
                <list>
                    <value>text/html;charset=UTF-8</value>
                    <value>text/plain;charset=UTF-8</value>
                    <value>application/json;charset=UTF-8</value>
                </list>
            </property>
            <property name="features">
                <array>
                    <!--<value>WriteMapNullValue</value> -->
                    <value>QuoteFieldNames</value>
                    <value>DisableCircularReferenceDetect</value>
                </array>
            </property>
        </bean>

        <bean id="stringHttpMessageConverter"
            class="org.springframework.http.converter.StringHttpMessageConverter">
            <constructor-arg value="UTF-8" index="0" />
        </bean>
    </mvc:message-converters>
</mvc:annotation-driven>

javax.servlet.ServletException: Could not resolve view with name '/download/product/topic/key' in servlet with name ''
    at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1227)
    at org.springframework.test.web.servlet.TestDispatcherServlet.render(TestDispatcherServlet.java:105)

org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation
    at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:137)

null

以及访问时使用/download/product/topic/key.txt/,但有没有其他解决方案不会更改@requestmapping和URL中的值？

Answer 1

将以下conde添加到Spring配置的.xml文件中：

<context:annotation-config/> 
<mvc:annotation-driven />

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

您可以尝试将DispatcherServlet添加到web.xml文件中，您可以在下面找到代码：

 <servlet>
        <servlet-name>myServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:ApplicationContext.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>myServlet</servlet-name>
        <url-pattern>/api/*</url-pattern>
    </servlet-mapping>