fix: 没找到com.example.springshell.utils.Util的实现

src/main/java/com/example/springshell/utils/Util.java

@@ -0,0 +1,40 @@
+package com.example.springshell.utils;
+
+import org.springframework.web.context.WebApplicationContext;
+import org.springframework.web.context.request.RequestContextHolder;
+import org.springframework.web.servlet.DispatcherServlet;
+
+import java.lang.reflect.Field;
+
+public class Util {
+
+    public static Object getFieldValue(Object obj, String fieldName) {
+        try {
+            Field field = obj.getClass().getDeclaredField(fieldName);
+            field.setAccessible(true);
+            return field.get(obj);
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static Field getField(Class<?> clazz, String fieldName) {
+        try {
+            Field field = clazz.getDeclaredField(fieldName);
+            field.setAccessible(true);
+            return field;
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public DispatcherServlet getServlet() {
+        try {
+            WebApplicationContext context = (WebApplicationContext) RequestContextHolder.currentRequestAttributes()
+                    .getAttribute("org.springframework.web.servlet.DispatcherServlet.CONTEXT", 0);
+            return (DispatcherServlet) context.getBean("dispatcherServlet");
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+}