添加了 WebMvcConfigurer 但是不行？爲什麼

springMvc/src/main/java/com/config/WebMvcConfig.java

@@ -0,0 +1,37 @@
+package com.config;
+
+import com.converter.DateConverter;
+import com.interceptor.MyInterceptor;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+import org.springframework.format.FormatterRegistry;
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+@Configuration
+public class WebMvcConfig implements WebMvcConfigurer {
+    @Override
+    public void addFormatters(FormatterRegistry registry) {
+        registry.addConverter(new Converter<String, Date>() {
+            public Date convert(String s) {
+                SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
+                Date date = null;
+                try {
+                    date = simpleDateFormat.parse(s);
+                } catch (ParseException e) {
+                    e.printStackTrace();
+                }
+                return date;
+            }
+        });
+    }
+    @Override
+    public void addInterceptors(InterceptorRegistry registry) {
+//        WebMvcConfigurer.super.addInterceptors(registry);
+    }
+}

springMvc/src/main/java/com/controller/UserController.java

@@ -1,13 +1,17 @@
 package com.controller;
 
+import com.interceptor.MyInterceptor;
+import com.listener.WebApplicationContextUtils;
 import com.pojo.Student;
 import org.aopalliance.intercept.Interceptor;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.ResponseBody;
 import org.springframework.web.servlet.ModelAndView;
 
+import javax.servlet.ServletContext;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
@@ -29,6 +33,7 @@ public class UserController {
     @RequestMapping("/save")
     public void save(HttpServletRequest request, HttpServletResponse response) throws IOException {
         // 直接返回字符串
+        ServletContext servletContext = request.getServletContext();
         response.getWriter().println("save");
 
     }

springMvc/src/main/java/testCom/SpringConfig2.java

@@ -0,0 +1,12 @@
+package testCom;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class SpringConfig2 {
+    @Bean
+    public String getS () {
+        return "s1";
+    }
+}

springMvc/src/main/resources/Spring-mvc.xml

@@ -36,6 +36,7 @@
 <!--        </property>-->
 
 <!--    </bean>-->
+<!--            <mvc:annotation-driven></mvc:annotation-driven>-->
         <mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven>
         <!--  开放静态资源的访问-->
         <mvc:resources mapping="/js/**" location="/js/"></mvc:resources>