go语言实现简单ngnix样例

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目录

1、代码实现样例：

2、postman调用ngnix，转发：

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1、代码实现样例：

package mainimport ("bytes""encoding/json""io""log""net/http""net/http/httputil""net/url"
)func main() {// 定义反向代理的目标服务器地址targetURL, err := url.Parse("http://localhost:8082")if err != nil {log.Fatalf("Failed to parse target URL: %v", err)}// 创建反向代理proxy := httputil.NewSingleHostReverseProxy(targetURL)// 修改请求处理函数http.HandleFunc("/login", handler(proxy))if err := http.ListenAndServe(":8887", nil); err != nil {log.Fatalf("Failed to start proxy server: %v", err)}
}func handler(proxy *httputil.ReverseProxy) http.HandlerFunc {return func(w http.ResponseWriter, r *http.Request) {log.Printf("Received request: %s %s", r.Method, r.URL.Path)// 构造传入参数params := map[string]string{"username": "user1","password": "password1",}jsonData, err := json.Marshal(params)if err != nil {http.Error(w, err.Error(), http.StatusInternalServerError)log.Printf("Failed to marshal JSON: %v", err)return}// 发送 POST 请求到目标服务器resp, err := http.Post("http://localhost:8082/login", "application/json", bytes.NewBuffer(jsonData))if err != nil {http.Error(w, err.Error(), http.StatusInternalServerError)log.Printf("Failed to send POST request: %v", err)return}defer resp.Body.Close()// 复制响应头部for key, values := range resp.Header {for _, value := range values {w.Header().Add(key, value)}}// 将目标服务器的响应内容直接返回给客户端w.WriteHeader(resp.StatusCode)if _, err := io.Copy(w, resp.Body); err != nil {log.Printf("Failed to write response: %v", err)}log.Printf("Forwarded response: %d", resp.StatusCode)}
}

2、postman调用ngnix，转发：

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