Created
February 1, 2018 11:51
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go web sample
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| <html> | |
| <head></head> | |
| <body> | |
| {{.DisplayArea}} | |
| <form method="POST" action="/"> | |
| <input type="text" name="amount_of_money" /> | |
| <input type="submit" value="Deposit" name="action" /> | |
| <input type="submit" value="Withdrawal" name="action" /> | |
| <input type="submit" value="Balance Inquiry" name="action" /> | |
| </form> | |
| </body> | |
| </html> |
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| package externalinterface | |
| import ( | |
| "log" | |
| "sync" | |
| "text/template" | |
| "path/filepath" | |
| "net/http" | |
| "../interfaceadapter" | |
| ) | |
| type Web struct{} | |
| func(r Web)Start(){ | |
| http.Handle("/", &homeHandler{}) | |
| if err := http.ListenAndServe(":8080", nil); err != nil { | |
| log.Fatal("ListenAndServe:", err) | |
| } | |
| } | |
| type homeHandler struct{ | |
| mOnce sync.Once | |
| mTemplate *template.Template | |
| } | |
| func (r homeHandler) ServeHTTP(aWriter http.ResponseWriter, aRequest *http.Request){ | |
| r.mOnce.Do(func(){ | |
| r.mTemplate = template.Must(template.ParseFiles(filepath.Join("externalinterface", "templates", "home.html"))) | |
| }) | |
| displayArea := resultDisplayArea{} | |
| var controller = interfaceadapter.CreateAccountsController(createBalanceDataAccessor(".\\balance.txt"), | |
| interfaceadapter.NewWebPresenter(&displayArea)) | |
| aRequest.ParseForm() | |
| action := aRequest.Form.Get("action") | |
| amountOfMoney := aRequest.Form.Get("amount_of_money") | |
| if action == "Deposit"{ | |
| controller.Deposit(amountOfMoney) | |
| } else if action == "Withdrawal" { | |
| controller.Withdrawal(amountOfMoney) | |
| } else if action == "Balance Inquiry" { | |
| controller.BalanceInquiry() | |
| } | |
| r.mTemplate.Execute(aWriter, displayArea) | |
| } | |
| type resultDisplayArea struct{ | |
| DisplayArea string | |
| } | |
| func(r *resultDisplayArea)Display(aData string){ | |
| r.DisplayArea += aData + "\n" | |
| } |
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