Springboot menyediakan perkhidmatan web kepada dunia luar Lapisan bawah bergantung pada modul web dalam springframework (termasuk tetapi tidak terhad kepada kelas teras mvc spring DispatcherServlet) untuk melaksanakan
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Jadi bila springboot menyuntik kelas teras DispatcherServlet ke dalam bekas?
Proses suntikan masih mengikuti proses pemasangan automatik dan rangka kerja springboot menyediakan sokongan untuk pemasangan automatik secara lalai
Dalam Terdapat konfigurasi org.springframework.boot.autoconfigure.web.servlet.DispatcherServletAutoConfiguration dalam fail spring.factories dalam pakej jar
@AutoConfigureOrder(Ordered.HIGHEST_PRECEDENCE) @Configuration(proxyBeanMethods = false) @ConditionalOnWebApplication(type = Type.SERVLET) @ConditionalOnClass(DispatcherServlet.class) @AutoConfigureAfter(ServletWebServerFactoryAutoConfiguration.class) public class DispatcherServletAutoConfiguration { /* * The bean name for a DispatcherServlet that will be mapped to the root URL "/" */ public static final String DEFAULT_DISPATCHER_SERVLET_BEAN_NAME = "dispatcherServlet"; /* * The bean name for a ServletRegistrationBean for the DispatcherServlet "/" * public static final String DEFAULT_DISPATCHER_SERVLET_REGISTRATION_BEAN_NAME = "dispatcherServletRegistration"; // ... 省略代码 }
Terdapat dua dalaman kelas dalam DispatcherServletAutoConfiguration ( kelas Configuration) DispatcherServletConfiguration, DispatcherServletRegistrationConfiguration dan dua kelas Condition yang sepadan DefaultDispatcherServletCondition, DispatcherServletRegistrationCondition
@Configuration(proxyBeanMethods = false) @Conditional(DefaultDispatcherServletCondition.class) @ConditionalOnClass(ServletRegistration.class) @EnableConfigurationProperties({ HttpProperties.class, WebMvcProperties.class }) protected static class DispatcherServletConfiguration { // @A @Bean(name = DEFAULT_DISPATCHER_SERVLET_BEAN_NAME) public DispatcherServlet dispatcherServlet(HttpProperties httpProperties, WebMvcProperties webMvcProperties) { DispatcherServlet dispatcherServlet = new DispatcherServlet(); dispatcherServlet.setDispatchOptionsRequest(webMvcProperties.isDispatchOptionsRequest()); dispatcherServlet.setDispatchTraceRequest(webMvcProperties.isDispatchTraceRequest()); dispatcherServlet.setThrowExceptionIfNoHandlerFound(webMvcProperties.isThrowExceptionIfNoHandlerFound()); dispatcherServlet.setPublishEvents(webMvcProperties.isPublishRequestHandledEvents()); dispatcherServlet.setEnableLoggingRequestDetails(httpProperties.isLogRequestDetails()); return dispatcherServlet; } // @B @Bean @ConditionalOnBean(MultipartResolver.class) @ConditionalOnMissingBean(name = DispatcherServlet.MULTIPART_RESOLVER_BEAN_NAME) public MultipartResolver multipartResolver(MultipartResolver resolver) { // Detect if the user has created a MultipartResolver but named it incorrectly return resolver; } }@A:
@Configuration(proxyBeanMethods = false) @Conditional(DispatcherServletRegistrationCondition.class) @ConditionalOnClass(ServletRegistration.class) @EnableConfigurationProperties(WebMvcProperties.class) @Import(DispatcherServletConfiguration.class) //@A protected static class DispatcherServletRegistrationConfiguration { @Bean(name = DEFAULT_DISPATCHER_SERVLET_REGISTRATION_BEAN_NAME) @ConditionalOnBean(value = DispatcherServlet.class, name = DEFAULT_DISPATCHER_SERVLET_BEAN_NAME) public DispatcherServletRegistrationBean dispatcherServletRegistration(DispatcherServlet dispatcherServlet, WebMvcProperties webMvcProperties, ObjectProvider<MultipartConfigElement> multipartConfig) { DispatcherServletRegistrationBean registration = new DispatcherServletRegistrationBean(dispatcherServlet, webMvcProperties.getServlet().getPath()); // 设置名称 registration.setName(DEFAULT_DISPATCHER_SERVLET_BEAN_NAME); registration.setLoadOnStartup(webMvcProperties.getServlet().getLoadOnStartup()); multipartConfig.ifAvailable(registration::setMultipartConfig); return registration; } }
Atas ialah kandungan terperinci Bagaimana untuk melaksanakan pemasangan automatik Springboot dengan menyuntik DispatcherServlet. Untuk maklumat lanjut, sila ikut artikel berkaitan lain di laman web China PHP!