职责链模式提交

src/main/java/com/pancm/basics/StringTest.java

@@ -18,6 +18,16 @@ public class StringTest {
 		  System.out.println(hello+","+newHello+","+str);
 		  test1();
 		  test3();
+		  
+		  System.out.println("=="+"-2".indexOf("-1"));
+		  System.out.println("=="+"-1".indexOf("-1"));
+		  System.out.println("=="+"0".indexOf("-1"));
+		  System.out.println("=="+"1".indexOf("-1"));
+		  String string = null;
+		  System.out.println(""+string);
+		  System.out.println((""+string));
+		  System.out.println(string+"");
+		  System.out.println(string+"1");
 	  }
 	  
 	  

src/main/java/com/pancm/design/responsibility/ResponsibilityTest.java

@@ -0,0 +1,157 @@
+package com.pancm.design.responsibility;
+
+/**
+ * @Title: ResponsibilityTest
+ * @Description: 责任链模式
+  	顾名思义，责任链模式（Chain of Responsibility Pattern）为请求创建了一个接收者对象的链。
+  	这种模式给予请求的类型，对请求的发送者和接收者进行解耦。这种类型的设计模式属于行为型模式。
+	在这种模式中，通常每个接收者都包含对另一个接收者的引用。如果一个对象不能处理该请求，那么它会把相同的请求传给下一个接收者，依此类推。
+ * @Version:1.0.0
+ * @author pancm
+ * @date 2018年8月8日
+ */
+public class ResponsibilityTest {
+
+	public static void main(String[] args) {
+		
+		
+		/*
+		 * 通过条件判断是否能够处理，符合就行处理，否则就转交给下一个进行处理
+		 * 
+		 */
+		String name = "xuwujing";
+		String something = "去聚餐";
+		String something2 = "去旅游";
+		Learder learder1 =new Supervisor(name, something);
+		Learder learder2 =new BranchManager(name, something);
+		Learder learder3 =new GeneralManager(name, something);
+		learder1.setLearder(learder2);
+		learder2.setLearder(learder3);
+		learder1.handler(1);
+		
+		Learder learder4 =new Supervisor(name, something2);
+		Learder learder5 =new BranchManager(name, something2);
+		Learder learder6 =new GeneralManager(name, something2);
+		learder4.setLearder(learder5);
+		learder5.setLearder(learder6);
+		learder4.handler(0);
+		
+		
+		
+	}
+
+}
+
+// 定义一个抽象类
+abstract class Handler {
+	protected Handler successor;
+
+	/** * 示意处理请求的方法，虽然这个示意方法是没有传入参数的 但实际是可以传入参数的，根据具体需要来选择是否传递参数 */
+	public abstract void handleRequest();
+
+	/** * 取值方法 */
+	public Handler getSuccessor() {
+		return successor;
+	}
+
+	/** * 赋值方法，设置后继的责任对象 */
+	public void setSuccessor(Handler successor) {
+		this.successor = successor;
+	}
+
+}
+
+// 具体的业务
+class ConcreteHandler extends Handler {
+	@Override
+	public void handleRequest() {
+		/** * 判断是否有后继的责任对象 如果有，就转发请求给后继的责任对象 如果没有，则处理请求 */
+		if (getSuccessor() != null) {
+			System.out.println("放过请求");
+			getSuccessor().handleRequest();
+		} else {
+			System.out.println("处理请求");
+		}
+	}
+}
+
+
+abstract class Learder{
+	
+	
+	protected Learder learder;
+	
+	protected void setLearder(Learder learder){
+		this.learder=learder;
+	}
+	
+	protected Learder getLearder(){
+		return learder;
+	}
+	
+	abstract void handler(int  level);
+}
+
+//主管
+class Supervisor extends Learder{
+	 private String name;
+	 private String something;
+	 public Supervisor(String name,String something) {
+		this.name=name;
+		this.something=something;
+	}
+	
+	@Override
+	void handler(int level) {
+		//如果级别在自己的处理范围之内
+		if(level>1){
+			System.out.println("主管处理了  "+name+"所述的<"+something+">事情!");
+		}else{
+			System.out.println("主管未能处理  "+name+"所述的<"+something+">事情!转交给上级!");
+			getLearder().handler(level);
+		}
+	}
+}
+
+//部门经理
+class BranchManager extends Learder{
+	 private String name;
+	 private String something;
+	 public BranchManager(String name,String something) {
+		this.name=name;
+		this.something=something;
+	}
+	
+	@Override
+	void handler(int level) {
+		//如果级别在自己的处理范围之内
+		if(level>0){
+			System.out.println("部门经理处理了  "+name+"所述的<"+something+">事情!");
+		}else{
+			System.out.println("部门经理未能处理  "+name+"所述的<"+something+">事情!转交给上级!");
+			getLearder().handler(level);
+		}
+	}
+}
+
+//总经理
+class GeneralManager extends Learder{
+	 private String name;
+	 private String something;
+	 public GeneralManager(String name,String something) {
+		this.name=name;
+		this.something=something;
+	}
+	
+	@Override
+	void handler(int level) {
+		//如果级别在自己的处理范围之内
+		if(level>-1){
+			System.out.println("总经理处理了  "+name+"所述的<"+something+">事情!");
+		}else{
+			System.out.println("总经理未能处理  "+name+"所述的<"+something+">事情!转交给上级!");
+			getLearder().handler(level);
+		}
+	}
+}
+

src/main/java/com/pancm/design/responsibility/package-info.java

@@ -0,0 +1,8 @@
+/**
+* @Title: package-info
+* @Description: 责任链模式
+* @Version:1.0.0  
+* @author pancm
+* @date 2018年8月8日
+*/
+package com.pancm.design.responsibility;