- 创建一个配置类，实现
WebMvcConfigurer接口，并重写addInterceptors方法来注册一个自定义的RequestMappingHandlerMapping。
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.format.FormatterRegistry;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.validation.MessageCodesResolver;
import org.springframework.validation.Validator;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.method.support.HandlerMethodReturnValueHandler;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.config.annotation.AsyncSupportConfigurer;
import org.springframework.web.servlet.config.annotation.ContentNegotiationConfigurer;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.PathMatchConfigurer;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.ViewResolverRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import java.util.List;
/**
* @date 2024/4/12 14:52
*/
@Configuration
public class MvcConfig implements WebMvcConfigurer {
@Autowired
private ControllerUrlPrintingInterceptor controllerUrlPrintingInterceptor;
@Override
public void configurePathMatch(PathMatchConfigurer configurer) {
}
@Override
public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
}
@Override
public void configureAsyncSupport(AsyncSupportConfigurer configurer) {
}
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
}
@Override
public void addFormatters(FormatterRegistry registry) {
}
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(controllerUrlPrintingInterceptor)
.addPathPatterns("/**");
}
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
}
@Override
public void addCorsMappings(CorsRegistry registry) {
}
@Override
public void addViewControllers(ViewControllerRegistry registry) {
}
@Override
public void configureViewResolvers(ViewResolverRegistry registry) {
}
@Override
public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {
}
@Override
public void addReturnValueHandlers(List<HandlerMethodReturnValueHandler> returnValueHandlers) {
}
@Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
}
@Override
public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
}
@Override
public void configureHandlerExceptionResolvers(List<HandlerExceptionResolver> exceptionResolvers) {
}
@Override
public void extendHandlerExceptionResolvers(List<HandlerExceptionResolver> exceptionResolvers) {
}
@Override
public Validator getValidator() {
return null;
}
@Override
public MessageCodesResolver getMessageCodesResolver() {
return null;
}
}
2. 创建一个拦截器类ControllerUrlPrintingInterceptor，实现HandlerInterceptor接口，并重写preHandle方法。
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @date 2024/4/12 14:49
*/
@Component
public class ControllerUrlPrintingInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws Exception {
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
ModelAndView modelAndView) throws Exception {
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
throws Exception {
}
}
3.在StartupControllerUrlPrinter中，我们通过RequestMappingHandlerMapping获取所有的URL和对应的处理器映射，然后打印出来。
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;
/**
* @date 2024/4/12 14:54
*/
public class StartupControllerUrlPrinter implements ApplicationListener<ContextRefreshedEvent> {
private final RequestMappingHandlerMapping handlerMapping;
public StartupControllerUrlPrinter(RequestMappingHandlerMapping handlerMapping) {
this.handlerMapping = handlerMapping;
}
@Override
public void onApplicationEvent(ContextRefreshedEvent event) {
handlerMapping.getHandlerMethods().forEach((key, value) -> System.out.println(key));
}
}
4.写一个配置类，将StartupControllerUrlPrinter在启动时注册
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;
/**
* @date 2024/4/12 14:55
*/
@Configuration
public class AppConfig {
@Bean
public StartupControllerUrlPrinter startupControllerUrlPrinter(RequestMappingHandlerMapping handlerMapping) {
return new StartupControllerUrlPrinter(handlerMapping);
}
}
这样，当 Spring Boot 应用启动时，就会打印出所有的 Controller URL 地址，帮助你快速了解应用的路由配置。