使用Go Rest框架处理POST请求中的表单数据

<div>
  <input type="hidden" name="endpont" value="http://127.0.0.1:8787/api/save/" />
  key: <input type="text" id="key" name="key" /><br />
  json: <input type="text" id="json" name="json" /><br />
  <input type="button" onclick="send_using_ajax();" value="Submit"/>
</div>

<script>
function send_using_ajax() {
  const key = document.getElementById('key').value;
  const json = document.getElementById('json').value;
  const endpoint = document.querySelector('input[name="endpont"]').value;

  const data = {
    key: key,
    json: json
  };

  fetch(endpoint, {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json'
    },
    body: JSON.stringify(data)
  })
  .then(response => {
    if (!response.ok) {
      throw new Error('Network response was not ok');
    }
    return response.json(); // Or response.text() if your server returns plain text
  })
  .then(data => {
    console.log('Success:', data);
    // Handle the response from the server
  })
  .catch(error => {
    console.error('Error:', error);
    // Handle errors
  });
}
</script>

package main

import (
    "encoding/json"
    "fmt"
    "github.com/gorilla/mux"
    "log"
    "net/http"
)

//Service Definition
type HelloService struct {
    //gorest.RestService `root:"/api/"`
    //save   gorest.EndPoint `method:"POST" path:"/save/" output:"string" postdata:"map[string]string"`
}

type PostData struct {
    Key  string `json:"key"`
    Json string `json:"json"`
}

func Save(w http.ResponseWriter, r *http.Request) {
    var postData PostData
    err := json.NewDecoder(r.Body).Decode(&postData)
    if err != nil {
        http.Error(w, err.Error(), http.StatusBadRequest)
        return
    }

    fmt.Println(postData)
    // Optionally, send a response back to the client
    w.Header().Set("Content-Type", "application/json")
    json.NewEncoder(w).Encode(map[string]string{"message": "Data received successfully"})
}

func main() {
    //gorest.RegisterService(new(HelloService)) //Register our service
    //http.Handle("/", gorest.Handle())
    //http.ListenAndServe(":8787", nil)

    r := mux.NewRouter()
    r.HandleFunc("/api/save/", Save).Methods("POST")
    log.Fatal(http.ListenAndServe(":8787", r))
}