自助建站是什么意思,怎样设计自己的网站,建设路小学家校互动平台网站,wordpress建站网大家好哇#xff0c;我是梦辛工作室的灵#xff0c;在最近的开发中#xff0c;有许多需要判断的分支处理#xff0c;且处理内容较多且复杂#xff0c;代码就容易越写越复杂#xff0c;导致后期无法继续更新跌打#xff0c;然后基于这个环境#xff0c;我用责任链模式写…大家好哇我是梦辛工作室的灵在最近的开发中有许多需要判断的分支处理且处理内容较多且复杂代码就容易越写越复杂导致后期无法继续更新跌打然后基于这个环境我用责任链模式写了一个工具类用于解决这个问题并将数据、判断、处理分隔开来这样代码的重用性也增强了下面来看下使用效果 使用方法如下 这里可自定义判断器和处理器并自由组合并链接起来这里的判读器需实现一个检查方法返回true 才会执行Handler的hand 方法 而处理器返回true的话就表示不在继续往后判断了返回false表示代码还是会下一个判断器进行判断 class Data1Check implements IfCheck{Overridepublic boolean check(Object[] args) {if(args ! null args.length 0 data1.equals(args[0])){System.out.println(Data1Check args[0] 检查成功处理);return true;}System.out.println(Data1Check args[0] 检查失败不处理);return false;}}class Data1Handler implements IfHandler{Overridepublic boolean hand(Object[] args) {System.out.print(args[0]);System.out.println(已被Data1Handler处理);return false;}}class Data2Check implements IfCheck{Overridepublic boolean check(Object[] args) {if(args ! null args.length 0 data2.equals(args[0])){System.out.println(Data2Check args[0] 检查成功处理);return true;}System.out.println(Data2Check args[0] 检查失败不处理);return false;}}class Data2Handler implements IfHandler{Overridepublic boolean hand(Object[] args) {System.out.print(args[0]);System.out.println(已被Data2Handler处理);return true;}}然后再来看下完整的代码 IfChain
public class IfChain {private IfChain nextChain;private Object[] args;private IfHandler handler;private IfCheck ifCheck;public IfChain(IfCheck ifCheck,IfHandler handler){this.ifCheck ifCheck;this.handler handler;}private boolean check(){if (ifCheck.check(args)){return handler.hand(args);}return false;}public IfCheck getIfCheck() {return ifCheck;}public void setIfCheck(IfCheck ifCheck) {this.ifCheck ifCheck;}public IfChain getNextChain() {return nextChain;}public void setNextChain(IfChain nextChain) {this.nextChain nextChain;}public Object[] getArgs() {return args;}public void setArgs(Object[] args) {this.args args;}public IfHandler getHandler() {return handler;}public void setHandler(IfHandler handler) {this.handler handler;}public void startCheck(){if (!check() nextChain ! null){nextChain.setArgs(args);nextChain.startCheck();}}}IfHandler
public interface IfHandler {boolean hand(Object[] args);
}
IfCheck
public interface IfCheck {boolean check(Object[] args);
}TestIfChain public class TestIfChain {class Data1Check implements IfCheck{Overridepublic boolean check(Object[] args) {if(args ! null args.length 0 data1.equals(args[0])){System.out.println(Data1Check args[0] 检查成功处理);return true;}System.out.println(Data1Check args[0] 检查失败不处理);return false;}}class Data1Handler implements IfHandler{Overridepublic boolean hand(Object[] args) {System.out.print(args[0]);System.out.println(已被Data1Handler处理);return false;}}class Data2Check implements IfCheck{Overridepublic boolean check(Object[] args) {if(args ! null args.length 0 data2.equals(args[0])){System.out.println(Data2Check args[0] 检查成功处理);return true;}System.out.println(Data2Check args[0] 检查失败不处理);return false;}}class Data2Handler implements IfHandler{Overridepublic boolean hand(Object[] args) {System.out.print(args[0]);System.out.println(已被Data2Handler处理);return true;}}Testpublic void doTest(){doCheck(data1);doCheck(data2);doCheck(data3);}private void doCheck(String data) {Object[] args new Object[]{data};IfChain ifChainData1 new IfChain(new Data1Check(),new Data1Handler());ifChainData1.setArgs(args);IfChain ifChainData2 new IfChain(new Data2Check(),new Data2Handler());ifChainData2.setArgs(args);ifChainData1.setNextChain(ifChainData2);ifChainData1.startCheck();}private void doCheck2(String data){if(data1.equals(data)){System.out.println(data1已被Data1Handler);return;}if(data2.equals(data)){System.out.println(data1已被Data2Handler);return;}}
}好了今天的分享就到这里了 github连接 https://github.com/wintton/MxTestSql.git
