安卓面试宝典安卓面试宝典

package com.yxd.knowledge.design.设计模式.责任链模式.code; public class Request { /** * 是否以登录 */ private boolean loggedOn; /** * 是否没频繁请求 */ private boolean frequentOK; /** * 是否有权访问 */ private boolean isPermits; /** * 是否包含敏感词 */ private boolean containsSensitiveWords; private String requestBody; public Request(boolean loggedOn, boolean frequentOK, boolean isPermits, boolean containsSensitiveWords) { this.loggedOn = loggedOn; this.frequentOK = frequentOK; this.isPermits = isPermits; this.containsSensitiveWords = containsSensitiveWords; } public boolean isLoggedOn() { return loggedOn; } public boolean isFrequentOK() { return frequentOK; } public boolean isPermits() { return isPermits; } public boolean isContainsSensitiveWords() { return containsSensitiveWords; } static class RequestBuilder{ private boolean loggedOn; private boolean frequentOK; private boolean isPermits; private boolean containsSensitiveWords; RequestBuilder loggedOn(boolean loggedOn){ this.loggedOn = loggedOn; return this; } RequestBuilder frequentOK(boolean frequentOK){ this.frequentOK = frequentOK; return this; } RequestBuilder isPermits(boolean isPermits){ this.isPermits = isPermits; return this; } RequestBuilder containsSensitiveWords(boolean containsSensitiveWords){ this.containsSensitiveWords = containsSensitiveWords; return this; } public Request build() { return new Request(loggedOn, frequentOK, isPermits, containsSensitiveWords); } } } /** * 处理者基类 */ abstract class Handler{ Handler next; public Handler(Handler next){ this.next = next; } public Handler getNext() { return next; } public void setNext(Handler next) { this.next = next; } /** * 处理请求 * @param request * @return 只有返回true才会继续执行 */ abstract boolean process(Request request); } /** * 请求频率处理者 */ class RequestFrequentHandler extends Handler{ public RequestFrequentHandler(Handler next) { super(next); } @Override boolean process(Request request) { System.out.println("访问频率控制"); if(request.isFrequentOK()){ Handler next = getNext(); if(null == next){ // 如果没有下个节点了则返回true return true; } // 根据下个节点的返回值来进行返回 return next.process(request); } return false; } } /** * 登录处理器 */ class LoggingHandler extends Handler{ public LoggingHandler(Handler next) { super(next); } @Override boolean process(Request request) { System.out.println("登录验证"); if(request.isLoggedOn()){ Handler next = getNext(); if(null == next){ return true; } return next.process(request); } return false; } } class IsPermitsHandler extends Handler{ public IsPermitsHandler(Handler next) { super(next); } @Override boolean process(Request request) { System.out.println("权限验证"); if(request.isPermits()){ Handler next = getNext(); if(null == next){ return true; } return next.process(request); } return false; } } class ContainsSensitiveWordsHandler extends Handler{ public ContainsSensitiveWordsHandler(Handler next) { super(next); } @Override boolean process(Request request) { System.out.println("敏感词验证"); if(request.isContainsSensitiveWords()){ Handler next = getNext(); if(null == next){ return true; } return next.process(request); } return false; } }