【GOF23设计模式】_责任链模式_公文审批_供应链系统的采购审批_异常链_过滤器和拦截器调用过程JAVA243

package com.test.chainOfResp;
/**
* 封装请假的基本信息
*/
public class LeaveRequest {
private String empName;
private int leaveDays;
private String reason;

public LeaveRequest(String empName, int leaveDays, String reason) {
super();
this.empName = empName;
this.leaveDays = leaveDays;
this.reason = reason;
}

public String getEmpName() {
return empName;
}

public void setEmpName(String empName) {
this.empName = empName;
}

public int getLeaveDays() {
return leaveDays;
}

public void setLeaveDays(int leaveDays) {
this.leaveDays = leaveDays;
}

public String getReason() {
return reason;
}

public void setReason(String reason) {
this.reason = reason;
}
}

package com.test.chainOfResp;
/**
* 抽象类
*/
public abstract class Leader {
protected String name;
protected Leader nextLeader;//责任链上的后继对象

public Leader(String name) {
super();
this.name = name;
}
//设定责任链上的后继对象
public void setNextLeader(Leader nextLeader) {
this.nextLeader = nextLeader;
}

/**
* 处理请求的核心的业务方法
* @param leaveRequest
*/
public abstract void handleRequest(LeaveRequest leaveRequest);
}

package com.test.chainOfResp;
/**
* 主任
*/
public class Director extends Leader{

public Director(String name) {
super(name);
}

@Override
public void handleRequest(LeaveRequest leaveRequest) {
if(leaveRequest.getLeaveDays() < 3){
System.out.println("员工："+leaveRequest.getEmpName()+"请假，天数："+leaveRequest.getLeaveDays()+"，理由："+leaveRequest.getReason());
System.out.println("主任："+this.name+"，审批通过！");
}else{
if(this.nextLeader != null){
this.nextLeader.handleRequest(leaveRequest);
}
}
}
}

package com.test.chainOfResp;
/**
* 经理
*/
public class Manager extends Leader{

public Manager(String name) {
super(name);
}

@Override
public void handleRequest(LeaveRequest leaveRequest) {
if(leaveRequest.getLeaveDays() < 10){
System.out.println("员工："+leaveRequest.getEmpName()+"请假，天数："+leaveRequest.getLeaveDays()+"，理由："+leaveRequest.getReason());
System.out.println("经理："+this.name+"，审批通过！");
}else{
if(this.nextLeader != null){
this.nextLeader.handleRequest(leaveRequest);
}
}
}
}

package com.test.chainOfResp;
/**
* 总经理
*/
public class GeneralManager extends Leader{

public GeneralManager(String name) {
super(name);
}

@Override
public void handleRequest(LeaveRequest leaveRequest) {
if(leaveRequest.getLeaveDays() < 30){
System.out.println("员工："+leaveRequest.getEmpName()+"请假，天数："+leaveRequest.getLeaveDays()+"，理由："+leaveRequest.getReason());
System.out.println("总经理："+this.name+"，审批通过！");
}else{
System.out.println("莫非"+leaveRequest.getEmpName()+"想辞职，居然请假"+leaveRequest.getLeaveDays()+"天！");
}
}
}

package com.test.chainOfResp;
/**
* 副总经理
*/
public class ViceGeneralManager extends Leader{

public ViceGeneralManager(String name) {
super(name);
}

@Override
public void handleRequest(LeaveRequest leaveRequest) {
if(leaveRequest.getLeaveDays() < 20){
System.out.println("员工："+leaveRequest.getEmpName()+"请假，天数："+leaveRequest.getLeaveDays()+"，理由："+leaveRequest.getReason());
System.out.println("副总经理："+this.name+"，审批通过！");
}else{
if(this.nextLeader != null){
this.nextLeader.handleRequest(leaveRequest);
}
}
}
}

package com.test.chainOfResp;

public class Client {
public static void main(String[] args) {
Leader a = new Director("张三");
Leader b = new Manager("李四");
Leader b2 = new ViceGeneralManager("李小四");//新增逻辑，副总经理
Leader c = new GeneralManager("王五");

//组织责任链对象的关系
a.setNextLeader(b);
b.setNextLeader(b2);//新增关系
b2.setNextLeader(c);

//开始请假操作
LeaveRequest leaveRequest = new LeaveRequest("Tom", 15, "回英国老家探亲！");
a.handleRequest(leaveRequest);

}
}

控制台输出：
员工：Tom请假，天数：15，理由：回英国老家探亲！
副总经理：李小四，审批通过！