1 package customer
2
3 import (
4 "encoding/json"
5 "fmt"
6 "os"
7 )
8
9 type customer struct {
10 Name string
11 Sex string
12 Age int
13 Phone string
14 Email string
15 Address string
16 }
17
18 type CusSlice []customer
19
20 type MainDisplay struct {
21 CusList CusSlice
22 }
23
24 func (self *MainDisplay) SaveJsonToFile() {
25 dir, err := os.Getwd()
26 fmt.Println("当前执行路径:", dir, err)
27 file := dir + "/data.json"
28 var fh *os.File
29
30 fi, _ := os.Stat(file)
31 if fi == nil {
32 fh, _ = os.Create(file)
33 } else {
34 fh, _ = os.OpenFile(file, os.O_RDWR, 0666)
35 }
36 defer fh.Close()
37
38 bytes, _ := json.Marshal(*self)
39 fh.Write(bytes)
40 }
41
42 func (self *MainDisplay) LoadJsonByFile() {
43 dir, err := os.Getwd()
44 fmt.Println("当前执行路径:", dir, err)
45 file := dir + "/data.json"
46 var fh *os.File
47
48 fi, _ := os.Stat(file)
49 if fi == nil {
50 fh, _ = os.Create(file)
51 } else {
52 fh, _ = os.OpenFile(file, os.O_RDWR, 0666)
53 }
54 defer fh.Close()
55
56 bytes := make([]byte, fi.Size())
57 fh.Seek(0, 0)
58 fh.Read(bytes)
59 json.Unmarshal(bytes, self)
60
61 }
62
63 func (self *MainDisplay) AddCustomer() {
64 var Name string
65 var Sex string
66 var Age int
67 var Phone string
68 var Email string
69 var Address string
70
71 fmt.Print("请输入姓名:")
72 fmt.Scanln(&Name)
73 fmt.Print("请输入性别:")
74 fmt.Scanln(&Sex)
75 fmt.Print("请输入年龄:")
76 fmt.Scanln(&Age)
77 fmt.Print("请输入电话:")
78 fmt.Scanln(&Phone)
79 fmt.Print("请输入邮箱:")
80 fmt.Scanln(&Email)
81 fmt.Print("请输入住址:")
82 fmt.Scanln(&Address)
83
84 self.CusList = append(self.CusList, customer{Name, Sex, Age, Phone, Email, Address})
85 fmt.Println("添加成功!")
86 fmt.Println()
87 fmt.Println()
88 fmt.Println()
89 }
90
91 func (self *MainDisplay) ModifyCustomer() {
92 var Name string
93 var Sex string
94 var Age int
95 var Phone string
96 var Email string
97 var Address string
98 var id int
99
100 fmt.Print("请输入要修改的序号:")
101 fmt.Scanln(&id)
102 if len(self.CusList) < id {
103 fmt.Println("修改失败!序列号不存在!")
104 fmt.Println()
105 fmt.Println()
106 fmt.Println()
107 return
108 }
109 fmt.Print("请输入修改后的姓名:")
110 fmt.Scanln(&Name)
111 fmt.Print("请输入修改后的性别:")
112 fmt.Scanln(&Sex)
113 fmt.Print("请输入修改后的年龄:")
114 fmt.Scanln(&Age)
115 fmt.Print("请输入修改后的电话:")
116 fmt.Scanln(&Phone)
117 fmt.Print("请输入修改后的邮箱:")
118 fmt.Scanln(&Email)
119 fmt.Print("请输入修改后的住址:")
120 fmt.Scanln(&Address)
121
122 if Name == "" {
123 Name = self.CusList[id-1].Name
124 }
125 if Sex == "" {
126 Sex = self.CusList[id-1].Sex
127 }
128 if Age == 0 {
129 Age = self.CusList[id-1].Age
130 }
131 if Phone == "" {
132 Phone = self.CusList[id-1].Phone
133 }
134 if Email == "" {
135 Email = self.CusList[id-1].Email
136 }
137 if Address == "" {
138 Address = self.CusList[id-1].Address
139 }
140 self.CusList[id-1].Name = Name
141 self.CusList[id-1].Sex = Sex
142 self.CusList[id-1].Age = Age
143 self.CusList[id-1].Phone = Phone
144 self.CusList[id-1].Email = Email
145 self.CusList[id-1].Address = Address
146
147 fmt.Println("修改成功!")
148 fmt.Println()
149 fmt.Println()
150 fmt.Println()
151 }
152
153 func (self *MainDisplay) ShowCustomer() {
154
155 fmt.Printf("%20v%20v%20v%20v%20v%20v%20v\n\n", "Sort", "Name", "Sex", "Age", "Phone", "Email", "Address")
156 for index, val := range self.CusList {
157 fmt.Printf("%20v%20v%20v%20v%20v%20v%20v\n", index+1, val.Name, val.Sex, val.Age, val.Phone, val.Email, val.Address)
158 }
159 fmt.Println()
160 fmt.Println()
161 fmt.Println()
162 }
163
164 func (self *MainDisplay) DeleteCustomer() {
165 var id int
166
167 fmt.Print("请输入要修改的序号:")
168 fmt.Scanln(&id)
169 if len(self.CusList) < id {
170 fmt.Println("修改失败!序列号不存在!")
171 fmt.Println()
172 fmt.Println()
173 fmt.Println()
174 return
175 }
176 choise1 := ""
177 fmt.Printf("是否确认删除'%v'退出?(y/n)", self.CusList[id-1].Name)
178 fmt.Scanln(&choise1)
179 if choise1 == "y" {
180 for i := id; i < len(self.CusList); i++ {
181 self.CusList[i-1] = self.CusList[i]
182 }
183 self.CusList = self.CusList[:len(self.CusList)-2]
184 }
185 fmt.Println()
186 fmt.Println()
187 fmt.Println()
188
189 }
190
191 func (self *MainDisplay) ViewMain() {
192
193 self.LoadJsonByFile()
194
195 mainfor:
196 for {
197 var choise int
198 fmt.Println("-----------------客户信息管理系统-----------------")
199 fmt.Println(" 1. 客 户 列 表")
200 fmt.Println(" 2. 添 加 客 户")
201 fmt.Println(" 3. 修 改 客 户")
202 fmt.Println(" 4. 删 除 客 户")
203 fmt.Println(" 5. 退 出")
204 fmt.Print("清选择(1~5)操作:")
205 fmt.Scanln(&choise)
206 switch choise {
207 case 1:
208 self.ShowCustomer()
209 case 2:
210 self.AddCustomer()
211 case 3:
212 self.ModifyCustomer()
213 case 4:
214 self.DeleteCustomer()
215 case 5:
216 choise1 := ""
217 fmt.Print("是否确认退出?(y/n)")
218 fmt.Scanln(&choise1)
219 if choise1 == "y" {
220 break mainfor
221 }
222 fmt.Println()
223 fmt.Println()
224 fmt.Println()
225
226 default:
227 fmt.Println("输入错误,请重新选择!")
228 fmt.Println()
229 fmt.Println()
230 fmt.Println()
231 }
232 }
233 self.SaveJsonToFile()
234 }
235
236 func CustomerFactory() *MainDisplay {
237 return &MainDisplay{}
238 }
239
240 func TestCustomer() {
241 m := CustomerFactory()
242 m.ViewMain()
243 }
标签：语法,Scanln,CusList,fmt,基础,id,Golang,Println,self From： https://www.cnblogs.com/watermeloncode/p/17707953.html