cloud.tianai.rpc.common.util.ClassUtils Maven / Gradle / Ivy
package cloud.tianai.rpc.common.util;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
public class ClassUtils {
public static T createObject(Class clazz, Object... args) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException, InstantiationException {
if(clazz.isInterface()) {
throw new InstantiationException("该class是个接口，不可实例化");
}
Class[] types = getType(args);
Constructor constructor = clazz.getConstructor(types);
T res = constructor.newInstance(args);
return res;
}
public static Class[] getType(Object[] params) {
if(params == null || params.length < 1) {
return new Class[0];
}
Class[] classArr = new Class[params.length];
for (int i = 0; i < params.length; i++) {
Class clazz = params[i].getClass();
classArr[i] = clazz;
}
return classArr;
}
public static Class forName(String classStr, ClassLoader classLoader) throws ClassNotFoundException {
Class clazz = classLoader.loadClass(classStr);
return clazz;
}
public static Class forName(String classStr) throws ClassNotFoundException {
return forName(classStr, Thread.currentThread().getContextClassLoader());
}
}