责任链模式代码

最新推荐文章于 2024-04-02 16:40:25 发布

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最新推荐文章于 2024-04-02 16:40:25 发布

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分类专栏：设计模式

本文链接：https://blog.youkuaiyun.com/qq_42145871/article/details/89857641

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博客围绕责任链模式代码展开，虽未给出具体内容，但责任链模式是重要的设计模式，在程序设计中可实现请求的处理与传递，能增强代码的灵活性和可维护性。

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package com.anhe.test;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by Albert.Tang on 2019/5/5 10:10 PM.
 */
//@SuppressWarnings("all")
public class Main {
    public static void main(String[] args) {

        Message message = new Message();
        message.setMsg("我们都是<script>中国人，我们都是996");


        // List<Filter> filters = new ArrayList<>();
        // filters.add(new HTMLFilter());
        // filters.add(new SensitiveFilter());
        FilterChain fc = new FilterChain();
        fc.add(new HTMLFilter()).add(new SensitiveFilter());

        fc.doFilter(message);

        FilterChain fc2 = new FilterChain();
        fc2.add(new PeopleFilter()).add(new OtherFilter());


        fc.add(fc2);
        fc.doFilter(message);
        
        System.out.println(message);

    }
}

class Message {

    private String title;
    private String msg;

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    @Override
    public String toString() {
        return "Message{" +
                "msg='" + msg + '\'' +
                '}';
    }
}

class HTMLFilter implements Filter {

    @Override
    public void doFilter(Message message) {
        String msg = message.getMsg();
        msg = msg.replace("<", "[");
        msg = msg.replace(">", "]");
        message.setMsg(msg);
    }
}

class SensitiveFilter implements Filter {

    @Override
    public void doFilter(Message message) {
        String msg = message.getMsg();
        msg = msg.replaceAll("996", "955");
        message.setMsg(msg);
    }
}

class FilterChain implements Filter {
    List<Filter> filters = new ArrayList<>();

    List<Filter> add(Filter filter) {
        filters.add(filter);
        return filters;
    }

    @Override
    public void doFilter(Message message) {
        for (Filter filter : filters) {
            filter.doFilter(message);
        }
    }
}

class PeopleFilter implements Filter {

    @Override
    public void doFilter(Message message) {
        String msg = message.getMsg();
        msg = msg.replace("我", "你");
        message.setMsg(msg);
    }
}

class OtherFilter implements Filter {

    @Override
    public void doFilter(Message message) {
        String msg = message.getMsg();
        msg = msg.replace("人", "仁");
        message.setMsg(msg);
    }
}

interface Filter {
    void doFilter(Message message);
}