go/pro-go-study
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

feat(web): 添加动态模板和表单编辑功能

Browse Source 
- 新增 dynamic.go 文件处理 HTML 模板请求
- 实现模板函数 intVal用于字符串到整数转换
- 添加 edit.html 模板支持产品数据编辑- 创建 forms.go 处理表单提交和数据更新
- 新增静态文件服务支持 /static/ 路径访问
- 添加 products.html 模板显示产品列表
- 实现 JSON 数据接口 /json 返回产品列表
- 添加 Bootstrap 样式支持改善界面显示- 实现产品编辑链接和表单提交功能
- 添加输入验证和错误处理机制
This commit is contained in:
yanzuoguang
2025-10-25 22:01:00 +08:00
parent f413315fae
commit 24f394e79f
9 changed files with 235 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
24-httpserver/httpserver/dynamic.go Normal file
View File

@@ -0,0 +1,45 @@
package main
import (
"html/template"
"net/http"
"strconv"
)
type Context struct {
Request *http.Request
Data []Product
}
var htmlTemplates *template.Template
func HandleTemplateRequest(writer http.ResponseWriter, request *http.Request) {
path := request.URL.Path
if path == "" {
path = "products.html"
}
t := htmlTemplates.Lookup(path)
if t == nil {
http.NotFound(writer, request)
return
}
err := t.Execute(writer, Context{request, ProductList})
if err != nil {
http.Error(writer, err.Error(), http.StatusInternalServerError)
return
}
}
func init() {
var err error
htmlTemplates = template.New("all")
htmlTemplates.Funcs(map[string]interface{}{
"intVal": strconv.Atoi,
})
htmlTemplates, err = htmlTemplates.ParseGlob("templates/*.html")
if err != nil {
panic(err)
return
}
http.Handle("/templates/", http.StripPrefix("/templates/", http.HandlerFunc(HandleTemplateRequest)))
}

29
24-httpserver/httpserver/forms.go Normal file
View File

@@ -0,0 +1,29 @@
package main
import (
"net/http"
"strconv"
)
func ProcessFormData(writer http.ResponseWriter, request *http.Request) {
if request.Method == http.MethodPost {
index, _ := strconv.Atoi(request.PostFormValue("index"))
price, err := strconv.ParseFloat(request.PostFormValue("price"), 64)
if err != nil {
Printfln("Error: %v", err.Error())
http.Redirect(writer, request, "/templates/", http.StatusTemporaryRedirect)
return
}
p := Product{
Name: request.PostFormValue("name"),
Category: request.PostFormValue("category"),
Price: price,
}
ProductList[index] = p
}
http.Redirect(writer, request, "/templates/", http.StatusTemporaryRedirect)
}
func init() {
http.HandleFunc("/forms/edit", ProcessFormData)
}

19
24-httpserver/httpserver/json.go Normal file
View File

@@ -0,0 +1,19 @@
package main
import (
"encoding/json"
"net/http"
)
func HandleJsonRequest(writer http.ResponseWriter, request *http.Request) {
writer.Header().Set("Content-Type", "application/json")
err := json.NewEncoder(writer).Encode(ProductList)
if err != nil {
Printfln("Error: %v", err.Error())
return
}
}
func init() {
http.HandleFunc("/json", HandleJsonRequest)
}

4
24-httpserver/httpserver/main3.go
View File

@@ -18,6 +18,10 @@ func main3() {
http.Handle("/message", &StringHandle3{message: "Hello World!"})
http.Handle("/favicon.ico", http.NotFoundHandler())
http.Handle("/", http.RedirectHandler("/message", http.StatusTemporaryRedirect))
fsHandler := http.FileServer(http.Dir("./static"))
http.Handle("/static/", http.StripPrefix("/static/", fsHandler))
err := http.ListenAndServe("localhost:5000", nil)
if err != nil {
Printfln("ListenAndServe Error: %v", err)

7
24-httpserver/httpserver/static/bootstrap.min.css vendored Normal file
View File

File diff suppressed because one or more lines are too long

14
24-httpserver/httpserver/static/index.html Normal file
View File

@@ -0,0 +1,14 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Pro Go</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="bootstrap.min.css" rel="stylesheet"/>
</head>
<body>
<div class="m-1 p-2 bg-primary text-white h2">
Hello World
</div>
</body>
</html>

36
24-httpserver/httpserver/static/store.html Normal file
View File

@@ -0,0 +1,36 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Pro Go</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="bootstrap.min.css" rel="stylesheet"/>
</head>
<body>
<div class="m-1 p-2 bg-primary text-white h2 text-center">
Products
</div>
<table class="table table-sm table-bordered table-striped">
<thead>
<tr>
<th>Name</th>
<th>Category</th>
<th>Price</th>
</tr>
</thead>
<tbody>
<tr>
<td>Kayak</td>
<td>Watersports</td>
<td>$275.00</td>
</tr>
<tr>
<td>Lifejacket</td>
<td>Watersports</td>
<td>$49.95</td>
</tr>
</tbody>
</table>
</body>
</html>

44
24-httpserver/httpserver/templates/edit.html Normal file
View File

@@ -0,0 +1,44 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Pro go</title>
<link href="/static/bootstrap.min.css" rel="stylesheet"/>
</head>
<body>
{{ $index := intVal (index (index .Request.URL.Query "index") 0) }}
{{ if lt $index (len .Data) }}
{{ with index .Data $index }}
<h3 class="bg-primary text-white text-center p-2 m-2">Product</h3>
<form method="POST" action="/forms/edit">
<div class="form-group">
<label>Index</label>
<input name="index" type="text" value="{{ $index }}" class="form-control" disabled/>
<input name="index" value="{{ $index }}" type="hidden"/>
</div>
<div class="form-group">
<label>Name</label>
<input name="name" type="text" value="{{ .Name }}" class="form-control"/>
</div>
<div class="form-group">
<label>Category</label>
<input name="category" type="text" value="{{ .Category }}" class="form-control"/>
</div>
<div class="form-group">
<label>Price</label>
<input name="price" type="text" value="{{ .Price }}" class="form-control"/>
</div>
<div class="mt-2">
<button type="submit" class="btn btn-primary">Save</button>
<a href="/templates/" class="btn btn-secondary">Cancel</a>
</div>
</form>
{{ end }}
{{ else }}
<h3 class="bg-danger text-white text-center p-2">
No Product At Specified Index
</h3>
{{ end }}
</body>
</html>

37
24-httpserver/httpserver/templates/products.html Normal file
View File

@@ -0,0 +1,37 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Pro Go</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="/static/bootstrap.min.css" rel="stylesheet"/>
</head>
<body>
<div class="m-1 p-2 bg-primary text-white h2 text-center">
Products
</div>
<table class="table table-sm table-bordered table-striped">
<thead>
<tr>
<th>Index</th>
<th>Name</th>
<th>Category</th>
<th class="text-end">Price</th>
<th class="text-center">Description</th>
</tr>
</thead>
<tbody>
{{ range $index,$product := .Data }}
<tr>
<td>{{ $index }}</td>
<td>{{ $product.Name }}</td>
<td>{{ $product.Category }}</td>
<td class="text-end">{{ printf "$%.2f" $product.Price }}</td>
<th class="text-center"><a href="edit.html/index{{ $index }}">Edit</a></th>
</tr>
{{ end }}
</tbody>
</table>
</body>
</html>