0
我已經設置了我的春節,4 MVC應用程序通過WebSocket的,到目前爲止,我已經成功了,我的servlet可以處理和調度STOMP消息與STOMP工作訪問@Autowired領域沒有什麼問題。我在控制器中處理@MessageMapping註釋的方法時遇到了一個惱人的問題:我無法從這些方法內部訪問任何@Autowired控制器的字段(它們都是空指針),但我可以從@RequestMapping註釋的方法在同一個控制器上訪問這些字段沒有任何問題。Spring MVC的不能從@MessageMapping註解的方法
我dispatcher servlet配置:
<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:oxm="http://www.springframework.org/schema/oxm"
xmlns:security="http://www.springframework.org/schema/security"
xmlns:websocket="http://www.springframework.org/schema/websocket"
xsi:schemaLocation="http://www.springframework.org/schema/oxm http://www.springframework.org/schema/oxm/spring-oxm-4.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.2.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/websocket http://www.springframework.org/schema/websocket/spring-websocket-4.0.xsd">
<mvc:annotation-driven/>
<mvc:resources location="assets" mapping="/assets/**"/>
<mvc:resources location="assets/img/favicon.ico" mapping="/favicon.ico" />
<context:component-scan base-package="com.company.web.controller"/>
<security:global-method-security pre-post-annotations="enabled" />
<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" />
</map>
</constructor-arg>
</bean>
</constructor-arg>
</bean>
</property>
</bean>
<mvc:interceptors>
<bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor" p:paramName="language"/>
<bean class="com.hxplus.web.interceptor.aCustomAwesomeInterceptor"/>
</mvc:interceptors>
<bean id="localeResolver" class="org.springframework.web.servlet.i18n.SessionLocaleResolver" p:defaultLocale="es"/>
<bean id="messageSource"
class="org.springframework.context.support.ResourceBundleMessageSource"
p:basename="messages"></bean>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/" p:suffix=".jsp" p:order="2"/>
<bean class="org.springframework.web.servlet.view.BeanNameViewResolver" p:order="0"/>
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- setting maximum upload size -->
<property name="maxUploadSize" value="${upload.limit}" />
</bean>
<context:property-placeholder location="classpath*:upload_config.properties"/>
<websocket:message-broker application-destination-prefix="/app">
<websocket:stomp-endpoint path="/hello/{recipient}">
<websocket:sockjs/>
</websocket:stomp-endpoint>
<websocket:simple-broker prefix="/topic" />
</websocket:message-broker>
</beans>
我的控制器:
@Controller
public class TheController {
private static final Logger _logger = LoggerFactory.getLogger(TheController.class);
@Autowired private TheService theService;
@Autowired private SimpMessagingTemplate simpMessagingTemplate;
@PreAuthorize("hasRole('GOD')")
@RequestMapping(value = "/something/{id}", method = RequestMethod.GET)
public String show(Model model, @PathVariable("id") Long id) {
//HERE I CAN ACCESS BOTH "theService" AND
//"simpMessagingTemplate" WITHOUT PROBLEMS
}
@MessageMapping("/hello/{recipient}")
private VOID testing(StompEvent event, @DestinationVariable String recipient){
//HERE BOTH "theService" AND "simpMessagingTemplate" ARE NULL
}
}