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‎README.md‎

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9. [日报表格只有一份---单例模式](http://blog.lmj.wiki/2016/12/20/design-pattern/singleton/)
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10. [统一热干面的制作流程---模板方法](http://blog.lmj.wiki/2016/12/22/design-pattern/template_method/)
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11. [梳理公司的组织架构---组合模式](http://blog.lmj.wiki/2017/01/18/design-pattern/composite/)
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12. [采购申请的处理流程---责任链模式](http://blog.lmj.wiki/2017/02/22/design-pattern/chain/)
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‎src/com/anly/designpattern/chain/Buyer.java‎

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package com.anly.designpattern.chain;
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/**
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* Created by mingjun on 17/2/20.
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*/
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public class Buyer {
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public static void main(String[] args) {
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// 小需求
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Request smallRequest = new Request("10箱饮料");
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RequestFlow.getRequestChain(RequestFlow.TYPE_SMALL_REQUEST).handleRequest(smallRequest);
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// 一般需求
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Request normalRequest = new Request("10套桌椅");
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RequestFlow.getRequestChain(RequestFlow.TYPE_NORMAL_REQUEST).handleRequest(normalRequest);
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// 大需求
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Request bigRequest = new Request("一套同步电子显示大屏");
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RequestFlow.getRequestChain(RequestFlow.TYPE_BIG_REQUEST).handleRequest(bigRequest);
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}
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}

‎src/com/anly/designpattern/chain/GeneralManager.java‎

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package com.anly.designpattern.chain;
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/**
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* Created by mingjun on 17/2/20.
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*/
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public class GeneralManager extends RequestHandler {
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public GeneralManager(RequestHandler next) {
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super(next);
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}
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@Override
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public String toString() {
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return "总经理";
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}
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}

‎src/com/anly/designpattern/chain/PurchasingManager.java‎

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package com.anly.designpattern.chain;
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/**
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* Created by mingjun on 17/2/20.
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*/
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public class PurchasingManager extends RequestHandler {
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/**
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* 构造时, 传入下一个处理人
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* @param next 下一个处理人
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*/
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public PurchasingManager(RequestHandler next) {
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super(next);
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}
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@Override
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public String toString() {
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return "采购经理";
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}
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}

‎src/com/anly/designpattern/chain/Request.java‎

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package com.anly.designpattern.chain;
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/**
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* Created by mingjun on 17/2/20.
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*/
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public class Request {
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public String name;
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public Request(String name) {
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this.name = name;
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}
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@Override
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public String toString() {
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return name + "采购申请";
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}
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}

‎src/com/anly/designpattern/chain/RequestFlow.java‎

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package com.anly.designpattern.chain;
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/**
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* Created by mingjun on 17/2/21.
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*/
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public class RequestFlow {
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public static final int TYPE_SMALL_REQUEST = 1;
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public static final int TYPE_NORMAL_REQUEST = 2;
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public static final int TYPE_BIG_REQUEST = 3;
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public static RequestHandler getRequestChain(int type) {
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switch (type) {
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// 小物件, 只需采购经理审批
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case TYPE_SMALL_REQUEST:
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return new PurchasingManager(null);
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// 一般物件, 需要总经理审批
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case TYPE_NORMAL_REQUEST:
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return new PurchasingManager(new GeneralManager(null));
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// 大件物品, 需要小光审批
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case TYPE_BIG_REQUEST:
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default:
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return new PurchasingManager(new GeneralManager(new XiaoGuang(null)));
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}
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}
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}

‎src/com/anly/designpattern/chain/RequestHandler.java‎

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package com.anly.designpattern.chain;
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/**
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* Created by mingjun on 17/2/20.
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*/
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public abstract class RequestHandler {
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// 上一级的处理人员
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private RequestHandler mNext;
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public RequestHandler(RequestHandler next) {
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this.mNext = next;
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}
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/**
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* 处理采购需求
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* @param req
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*/
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public void handleRequest(Request req) {
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printHandling(req);
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if (mNext != null) {
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mNext.handleRequest(req);
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}
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}
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protected void printHandling(Request req) {
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System.out.println(this.toString() + "审批了:" + req);
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}
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@Override
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public abstract String toString();
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}

‎src/com/anly/designpattern/chain/XiaoGuang.java‎

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package com.anly.designpattern.chain;
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/**
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* Created by mingjun on 17/2/20.
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*/
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public class XiaoGuang extends RequestHandler {
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public XiaoGuang(RequestHandler next) {
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super(next);
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}
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@Override
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public String toString() {
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return "小光";
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}
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}

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