55 lines
1.3 KiB
Go
55 lines
1.3 KiB
Go
package gee
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import (
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"fmt"
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"net/http"
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)
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// HandlerFunc 路由匹配到后的具体函数
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type HandlerFunc func(w http.ResponseWriter, r *http.Request)
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// Engine 路由表 实现了ServeHTTP接口
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type Engine struct {
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router map[string]HandlerFunc
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}
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// ServeHTTP 实现了ServeHTTP接口
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func (engine *Engine) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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// 获取连接的请求方式和路径
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key := r.Method + "-" + r.URL.Path
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// 对比和匹配路由
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if handler, ok := engine.router[key]; ok {
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handler(w, r)
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} else {
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w.WriteHeader(http.StatusNotFound)
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_, _ = fmt.Fprintf(w, "404 NOT FOUND: %s", r.URL)
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}
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}
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// Run 启动服务
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func (engine *Engine) Run(addr string) (err error) {
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return http.ListenAndServe(addr, engine)
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}
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// 封装路由规则和具体的处理函数
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// addRoute 添加路由规则
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func (engine *Engine) addRoute(method string, pattern string, handler HandlerFunc) {
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key := method + "-" + pattern
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engine.router[key] = handler
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}
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// GET 添加GET路由规则
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func (engine *Engine) GET(pattern string, handler HandlerFunc) {
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engine.addRoute("GET", pattern, handler)
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}
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// POST 添加POST路由规则
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func (engine *Engine) POST(pattern string, handler HandlerFunc) {
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engine.addRoute("POST", pattern, handler)
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}
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// New 实例化Engine
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func New() *Engine {
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return &Engine{router: make(map[string]HandlerFunc)}
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}
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