我目前正在使用SpringBoot和@Configuration JavaClass注册Servlet HttpRequestHandlerService
但是它总是告诉我不可用
这是我注册Bean的代码类：
@Configuration
public class WebConfiguration extends SpringBootServletInitializer {
private static final String SERVLET_NAME = "DataFileServlet";
/**
* Initializer servlet context initializer.
*
* @return the servlet context initializer
*/
@Bean
public ServletContextInitializer initializer() {
return servletContext -> {
servletContext.setInitParameter("javax.faces.FACELETS_SKIP_COMMENTS", "true");
servletContext.setInitParameter("contextConfigLocation", "classpath:applicationContext.xml");
servletContext.setInitParameter("javax.faces.FACELETS_REFRESH_PERIOD", "1");
servletContext.setInitParameter("primefaces.THEME", "admin");
servletContext.setInitParameter("primefaces.FONT_AWESOME", "true");
servletContext.setInitParameter("com.sun.faces.sendPoweredByHeader", "false");
servletContext.setInitParameter("javax.faces.CLIENT_WINDOW_MODE", "url");
};
}
/**
* Is used to register the servlet HttpRequestHandler.
*
* @return the servlet "registartionBean"
*/
@Bean
public ServletRegistrationBean<HttpRequestHandlerServlet> dataFileServletRegistration() {
ServletRegistrationBean<HttpRequestHandlerServlet> registrationBean = new ServletRegistrationBean<>(new HttpRequestHandlerServlet());
registrationBean.setName(SERVLET_NAME);
registrationBean.setLoadOnStartup(1);
return registrationBean;
}
/**
* Is responcable for registering a filter.
*
* @return the filter "registrationBean"
*/
@Bean
public FilterRegistrationBean<CharacterEncodingFilter> encodingFilter() {
FilterRegistrationBean<CharacterEncodingFilter> registrationBean = new FilterRegistrationBean<>(new CharacterEncodingFilter());
registrationBean.setEnabled(true);
registrationBean.setOrder(1);
registrationBean.addInitParameter("encoding","UTF-8" );
registrationBean.addInitParameter("forceEncoding", "true");
return registrationBean;
}
/**
* Is resposible for registering a new listener.
*
* @return the listener "registrationBean"
*/
@Bean ServletListenerRegistrationBean<IntrospectorCleanupListener> IntrospectorCleanupListener(){
ServletListenerRegistrationBean<IntrospectorCleanupListener> registrationBean = new ServletListenerRegistrationBean<>();
registrationBean.setListener(new IntrospectorCleanupListener());
return registrationBean;
}
}
这是我的Stacktrace
2019-02-14 16:16:35.151 ERROR 5468 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : StandardWrapper.Throwable
org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'DataFileServlet' available
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:772)
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1221)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:294)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:204)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1089)
at org.springframework.web.context.support.HttpRequestHandlerServlet.init(HttpRequestHandlerServlet.java:60)
at javax.servlet.GenericServlet.init(GenericServlet.java:158)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1123)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:974)
at org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedContext.load(TomcatEmbeddedContext.java:83)
at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580)
at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:270)
at java.util.TreeMap$ValueSpliterator.forEachRemaining(TreeMap.java:2897)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
at org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedContext.lambda$deferredLoadOnStartup$0(TomcatEmbeddedContext.java:65)
at org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedContext.doWithThreadContextClassLoader(TomcatEmbeddedContext.java:108)
at org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedContext.deferredLoadOnStartup(TomcatEmbeddedContext.java:64)
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.performDeferredLoadOnStartup(TomcatWebServer.java:282)
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:200)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.startWebServer(ServletWebServerApplicationContext.java:311)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:164)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)
at de.Application.main(Application.java:33)
2019-02-14 16:16:35.233 INFO 5468 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2019-02-14 16:16:35.234 ERROR 5468 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Failed to destroy the filter named [Tomcat WebSocket (JSR356) Filter] of type [org.apache.tomcat.websocket.server.WsFilter]
java.lang.AbstractMethodError: null
at org.apache.catalina.core.ApplicationFilterConfig.release(ApplicationFilterConfig.java:301)
at org.apache.catalina.core.StandardContext.filterStop(StandardContext.java:4543)
at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5345)
at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257)
at org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1398)
at org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1387)
at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)
at java.util.concurrent.FutureTask.run(FutureTask.java)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
at org.apache.catalina.core.ContainerBase.stopInternal(ContainerBase.java:974)
at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257)
at org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1398)
at org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1387)
at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)
at java.util.concurrent.FutureTask.run(FutureTask.java)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
at org.apache.catalina.core.ContainerBase.stopInternal(ContainerBase.java:974)
at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257)
at org.apache.catalina.core.StandardService.stopInternal(StandardService.java:475)
at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257)
at org.apache.catalina.core.StandardServer.stopInternal(StandardServer.java:995)
at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257)
at org.apache.catalina.startup.Tomcat.stop(Tomcat.java:408)
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.stopTomcat(TomcatWebServer.java:250)
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.stop(TomcatWebServer.java:306)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.stopAndReleaseWebServer(ServletWebServerApplicationContext.java:320)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)
at de.Application.main(Application.java:33)
2019-02-14 16:16:35.244 INFO 5468 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2019-02-14 16:16:35.309 ERROR 5468 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
APPLICATION FAILED TO START
***************************
Description:
A component required a bean named 'DataFileServlet' that could not be found.
Action:
Consider defining a bean named 'DataFileServlet' in your configuration.
还有我的WebXML
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<context-param>
<param-name>javax.faces.FACELETS_SKIP_COMMENTS</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>javax.faces.FACELETS_REFRESH_PERIOD</param-name>
<param-value>1</param-value>
</context-param>
<context-param>
<param-name>primefaces.THEME</param-name>
<param-value>admin</param-value>
</context-param>
<context-param>
<param-name>primefaces.FONT_AWESOME</param-name>
<param-value>true</param-value>
</context-param>
<!-- security: don´t send x-powered-by-header -->
<context-param>
<param-name>com.sun.faces.sendPoweredByHeader</param-name>
<param-value>false</param-value>
</context-param>
<context-param>
<param-name>javax.faces.CLIENT_WINDOW_MODE</param-name>
<param-value>url</param-value>
</context-param>
<servlet>
<servlet-name>DataFileServlet</servlet-name>
<servlet-class>org.springframework.web.context.support.HttpRequestHandlerServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>DataFileServlet</servlet-name>
<url-pattern>/DataFileServlet</url-pattern>
</servlet-mapping>
<listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
如何使它正常工作？
答案 0 :(得分：2)
HttpRequestHandlerServlet委托给HttpRequestHandler bean。在类的javadoc中对此进行了描述：
委托给在Spring的根Web应用程序上下文中定义的
相匹配HttpRequestHandlerbean。目标bean名称必须与HttpRequestHandlerServletservlet名称
在为servlet定义注册bean时，将其名称设置为DataFileServlet。结果，当Servlet收到请求时，它正在尝试检索名为DataFileServlet的bean。由于没有使用该名称定义的Bean，因此失败了。
要使用已配置的HttpRequestHandlerServlet，需要定义一个名为HttpRequestHandler的{{1}} bean：
DataFileServlet