implfactory.java

struts+spring+hibernate例子

package com.shop.utils;

public class ImplFactory {
	public static Object getInstance(Class c) {
		String objectName = c.getName();
		int i = objectName.lastIndexOf(".");
		String classPath = objectName.substring(0,i+1);
		objectName = classPath + objectName.substring(i+2);
		try {
			return Class.forName(objectName).newInstance();
		} catch (ClassNotFoundException e) {
			System.out.println("-----指定的类"+objectName+"没找到------");
			e.printStackTrace();
		} catch(Exception e){
			System.out.println("-----实例化类"+objectName+"出错------");
		}
		return null;
	}
	/*
	public static void main(String[] args){
		getDAO(IAnnounceDAO.class);
		IAnnounceDAO dao = (IAnnounceDAO)getDAO(IAnnounceDAO.class);
		dao.findAnnounce();
	}
	*/
}