com.jfinal.kit.ReflectKit Maven / Gradle / Ivy

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/**
 * Copyright (c) 2011-2021, James Zhan 詹波 ([email protected]).
 *
 * 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
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.jfinal.kit;

import java.lang.reflect.Method;
import java.lang.reflect.Parameter;

/**
 * 反射工具类
 */
public class ReflectKit {
	
	public static Object newInstance(Class clazz) {
		try {
			return clazz.newInstance();
		} catch (ReflectiveOperationException e) {
			throw new RuntimeException(e);
		}
	}
	
	public static String getMethodSignature(Method method) {
		StringBuilder ret = new StringBuilder()
				.append(method.getDeclaringClass().getName())
				.append(".")
				.append(method.getName())
				.append("(");
		
		int index = 0;
		Parameter[] paras = method.getParameters();
		for (Parameter p : paras) {
			if (index++ > 0) {
				ret.append(", ");
			}
			ret.append(p.getParameterizedType().getTypeName());
		}
		
		return ret.append(")").toString();
	}
	
	/*
	public static String getMethodSignature(Method method) {
		StringBuilder ret = new StringBuilder()
				.append(method.getDeclaringClass().getName())
				.append(".")
				.append(method.getName())
				.append("(");
		
		int index = 0;
		java.lang.reflect.Type[] paraTypes = method.getGenericParameterTypes();
		for (java.lang.reflect.Type type : paraTypes) {
			if (index++ > 0) {
				ret.append(", ");
			}
			ret.append(type.getTypeName());
		}
		
		return ret.append(")").toString();
	}*/
	
}