面试题复习-常用设计模式-模板模式

模板：

package com.ajax.pattern.template;

import javax.servlet.http.HttpServletRequest;

public abstract class ServletTemplate {
    public void handle(HttpServletRequest request) {
        doGet();
        doPost();
    }                

    protected abstract void doPost();

    protected abstract void doGet();
}

实现1：

package com.ajax.pattern.template;

public class ServletImpl1 extends ServletTemplate {
    @Override
    protected void doGet() {
        System.out.println("get1");
    }

    @Override
    protected void doPost() {
        System.out.println("post1");
    }
}

实现2：

package com.ajax.pattern.template;

public class ServletImpl2 extends ServletTemplate {
    @Override
    protected void doGet() {
        System.out.println("get2");
    }

    @Override
    protected void doPost() {
        System.out.println("post2");
    }
}

运行：

package com.ajax.pattern.template;

public class Run {
    public static void main(String[] args) {
        new ServletImpl1().handle(null);
        new ServletImpl2().handle(null);
    }
}