77 lines
1.9 KiB
Go
77 lines
1.9 KiB
Go
package main
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import "fmt"
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/*
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实例：
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汤宝宝申请报销款，需要走产品经理、部门经理和总经理的审核~
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*/
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type Manager struct {
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name string
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successor *Manager // successor表示下一级经理
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amount float64
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}
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func (m *Manager) SetSuccessor(successor *Manager) {
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m.successor = successor
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fmt.Printf("%s的下一级经理是%s\n", m.name, successor.name)
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}
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func (m *Manager) SetAmountRight(amount float64) {
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m.amount = amount
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fmt.Printf("%s的报销权限是%.2f元\n", m.name, amount)
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}
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func (m *Manager) HaveRight(amount float64) bool {
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if amount <= m.amount {
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fmt.Printf("%s有权限审批%.2f元的报销请求\n", m.name, amount)
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return true
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}
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fmt.Printf("%s没有权限审批%.2f元的报销请求\n", m.name, amount)
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return false
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}
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func (m *Manager) Approve(name string, amount float64) {
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fmt.Printf("%s提交了一笔%.2f元的报销请求\n", name, amount)
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if m.HaveRight(amount) {
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fmt.Printf("%s审批通过了%s的报销请求，金额为%.2f元\n", m.name, name, amount)
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} else if m.successor != nil {
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fmt.Printf("%s将%s的报销请求上报给%s审批\n", m.name, name, m.successor.name)
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m.successor.Approve(name, amount)
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} else {
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fmt.Printf("没有合适的经理审批%s的报销请求，金额为%.2f元\n", name, amount)
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}
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}
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func main() {
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fmt.Println("========= 责任链模式 =========")
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// 创建经理
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pm := &Manager{name: "产品经理"}
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pm.SetAmountRight(1000)
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dm := &Manager{name: "部门经理"}
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dm.SetAmountRight(5000)
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gm := &Manager{name: "总经理"}
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gm.SetAmountRight(20000)
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// 设置责任链
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pm.SetSuccessor(dm)
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dm.SetSuccessor(gm)
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// 提交报销请求
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fmt.Println("-----")
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pm.Approve("汤宝宝", 800)
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fmt.Println("-----")
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pm.Approve("汤宝宝", 3000)
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fmt.Println("-----")
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pm.Approve("汤宝宝", 15000)
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fmt.Println("-----")
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pm.Approve("汤宝宝", 25000)
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fmt.Println()
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fmt.Println("======= 责任链模式结束 =======")
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}
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