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实现WebMvcConfigurer接口扩展Spring MVC的功能
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                                实现WebMvcConfigurer接口扩展Spring MVC的功能
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                                前言:
先查看WebMvcConfigurer接口中都定義了哪些內容
public interface WebMvcConfigurer {default void configurePathMatch(PathMatchConfigurer configurer) {}default void configureContentNegotiation(ContentNegotiationConfigurer configurer) {}default void configureAsyncSupport(AsyncSupportConfigurer configurer) {}default void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {}default void addFormatters(FormatterRegistry registry) {}default void addInterceptors(InterceptorRegistry registry) {}default void addResourceHandlers(ResourceHandlerRegistry registry) {}default void addCorsMappings(CorsRegistry registry) {}default void addViewControllers(ViewControllerRegistry registry) {}default void configureViewResolvers(ViewResolverRegistry registry) {}default void addArgumentResolvers(List<HandlerMethodArgumentResolver> resolvers) {}default void addReturnValueHandlers(List<HandlerMethodReturnValueHandler> handlers) {}default void configureMessageConverters(List<HttpMessageConverter<?>> converters) {}default void extendMessageConverters(List<HttpMessageConverter<?>> converters) { }default void configureHandlerExceptionResolvers(List<HandlerExceptionResolver> resolvers) {}default void extendHandlerExceptionResolvers(List<HandlerExceptionResolver> resolvers) {}@Nullabledefault Validator getValidator() {return null;}@Nullabledefault MessageCodesResolver getMessageCodesResolver() {return null;} }我們來擴展default void addViewControllers(ViewControllerRegistry registry) { }這個視圖映射
1.創建一個配置類,使用@Configuration注解標明這是一個配置類
/*** @author:抱著魚睡覺的喵喵* @date:2020/12/18* @description:*/ //使用WebMvcConfigurer接口擴展Spring MVC的功能 @Configuration public class MyMVcConfig implements WebMvcConfigurer {@Overridepublic void addViewControllers(ViewControllerRegistry registry) {//向瀏覽器發送/hao請求來到successregistry.addViewController("/hao").setViewName("forward:success");} }這個registry.addViewController("/hao").setViewName(“forward:success”);相當于SpringMVC當中的<mvc:view-controller path="/hao" view-name=“success” >
2.創建Controller類
/*** @author:抱著魚睡覺的喵喵* @date:2020/12/18* @description:*/ @Controller public class HelloController {@RequestMapping("/success")public String success(Map<String,Object> map){map.put("zsh","真棒!");return "success";} }3.編寫success.html
<!DOCTYPE html> <html lang="en" xmlns:th="http://www.thymeleaf.org"> <head><meta charset="UTF-8"><title>success</title> </head> <body> <!-- th:text 將div里面的內容設置為我們指定的值--><div th:text="${zsh}"></div> </body> </html>4.啟動主配置類訪問http://localhost:8080/hao
 
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