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agents-flex-core/src/main/java/com/agentsflex/core/util/ClassUtil.java

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+/*
+ *  Copyright (c) 2023-2025, Agents-Flex (fuhai999@gmail.com).
+ *  <p>
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *  <p>
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *  <p>
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package com.agentsflex.core.util;
+
+
+
+import java.lang.reflect.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.function.Predicate;
+
+/**
+ * 类实例创建者创建者
+ *
+ * @author michael
+ * @date 17/3/21
+ */
+public class ClassUtil {
+
+    private ClassUtil() {
+    }
+
+    private static final String[] OBJECT_METHODS = new String[]{
+        "toString",
+        "getClass",
+        "equals",
+        "hashCode",
+        "wait",
+        "notify",
+        "notifyAll",
+        "clone",
+        "finalize"
+    };
+
+    //proxy frameworks
+    private static final List<String> PROXY_CLASS_NAMES = Arrays.asList("net.sf.cglib.proxy.Factory"
+        // cglib
+        , "org.springframework.cglib.proxy.Factory"
+
+        // javassist
+        , "javassist.util.proxy.ProxyObject"
+        , "org.apache.ibatis.javassist.util.proxy.ProxyObject");
+    private static final String ENHANCER_BY = "$$EnhancerBy";
+    private static final String JAVASSIST_BY = "_$$_";
+
+    public static boolean isProxy(Class<?> clazz) {
+        for (Class<?> cls : clazz.getInterfaces()) {
+            if (PROXY_CLASS_NAMES.contains(cls.getName())) {
+                return true;
+            }
+        }
+        //java proxy
+        return Proxy.isProxyClass(clazz);
+    }
+
+    private static <T> Class<T> getJdkProxySuperClass(Class<T> clazz) {
+        final Class<?> proxyClass = Proxy.getProxyClass(clazz.getClassLoader(), clazz.getInterfaces());
+        return (Class<T>) proxyClass.getInterfaces()[0];
+    }
+
+    public static <T> Class<T> getUsefulClass(Class<T> clazz) {
+        if (isProxy(clazz)) {
+            return getJdkProxySuperClass(clazz);
+        }
+
+        //ControllerTest$ServiceTest$$EnhancerByGuice$$40471411#hello   -------> Guice
+        //com.demo.blog.Blog$$EnhancerByCGLIB$$69a17158  ----> CGLIB
+        //io.jboot.test.app.TestAppListener_$$_jvstb9f_0 ------> javassist
+        final String name = clazz.getName();
+        if (name.contains(ENHANCER_BY) || name.contains(JAVASSIST_BY)) {
+            return (Class<T>) clazz.getSuperclass();
+        }
+
+        return clazz;
+    }
+
+
+    public static Class<?> getWrapType(Class<?> clazz) {
+        if (clazz == null || !clazz.isPrimitive()) {
+            return clazz;
+        }
+        if (clazz == Integer.TYPE) {
+            return Integer.class;
+        } else if (clazz == Long.TYPE) {
+            return Long.class;
+        } else if (clazz == Boolean.TYPE) {
+            return Boolean.class;
+        } else if (clazz == Float.TYPE) {
+            return Float.class;
+        } else if (clazz == Double.TYPE) {
+            return Double.class;
+        } else if (clazz == Short.TYPE) {
+            return Short.class;
+        } else if (clazz == Character.TYPE) {
+            return Character.class;
+        } else if (clazz == Byte.TYPE) {
+            return Byte.class;
+        } else if (clazz == Void.TYPE) {
+            return Void.class;
+        }
+        return clazz;
+    }
+
+
+    public static boolean isArray(Class<?> clazz) {
+        return clazz.isArray()
+            || clazz == int[].class
+            || clazz == long[].class
+            || clazz == short[].class
+            || clazz == float[].class
+            || clazz == double[].class;
+    }
+
+
+    public static List<Field> getAllFields(Class<?> clazz) {
+        List<Field> fields = new ArrayList<>();
+        doGetFields(clazz, fields, null, false);
+        return fields;
+    }
+
+    public static List<Field> getAllFields(Class<?> clazz, Predicate<Field> predicate) {
+        List<Field> fields = new ArrayList<>();
+        doGetFields(clazz, fields, predicate, false);
+        return fields;
+    }
+
+    public static Field getFirstField(Class<?> clazz, Predicate<Field> predicate) {
+        List<Field> fields = new ArrayList<>();
+        doGetFields(clazz, fields, predicate, true);
+        return fields.isEmpty() ? null : fields.get(0);
+    }
+
+    private static void doGetFields(Class<?> clazz, List<Field> fields, Predicate<Field> predicate, boolean firstOnly) {
+        if (clazz == null || clazz == Object.class) {
+            return;
+        }
+
+        Field[] declaredFields = clazz.getDeclaredFields();
+        for (Field declaredField : declaredFields) {
+            if (predicate == null || predicate.test(declaredField)) {
+                fields.add(declaredField);
+                if (firstOnly) {
+                    break;
+                }
+            }
+        }
+
+        if (firstOnly && !fields.isEmpty()) {
+            return;
+        }
+
+        doGetFields(clazz.getSuperclass(), fields, predicate, firstOnly);
+    }
+
+    public static List<Method> getAllMethods(Class<?> clazz) {
+        List<Method> methods = new ArrayList<>();
+        doGetMethods(clazz, methods, null, false);
+        return methods;
+    }
+
+    public static List<Method> getAllMethods(Class<?> clazz, Predicate<Method> predicate) {
+        List<Method> methods = new ArrayList<>();
+        doGetMethods(clazz, methods, predicate, false);
+        return methods;
+    }
+
+    public static Method getFirstMethod(Class<?> clazz, Predicate<Method> predicate) {
+        List<Method> methods = new ArrayList<>();
+        doGetMethods(clazz, methods, predicate, true);
+        return methods.isEmpty() ? null : methods.get(0);
+    }
+
+
+    private static void doGetMethods(Class<?> clazz, List<Method> methods, Predicate<Method> predicate, boolean firstOnly) {
+        if (clazz == null || clazz == Object.class) {
+            return;
+        }
+
+        Method[] declaredMethods = clazz.getDeclaredMethods();
+        for (Method method : declaredMethods) {
+            if (predicate == null || predicate.test(method)) {
+                methods.add(method);
+                if (firstOnly) {
+                    break;
+                }
+            }
+        }
+
+        if (firstOnly && !methods.isEmpty()) {
+            return;
+        }
+
+        doGetMethods(clazz.getSuperclass(), methods, predicate, firstOnly);
+    }
+
+}