Golang – 发送 API POST 请求 – 参数不足错误

huangapple
go评论123阅读模式
英文:

Golang - Sending API POST Request - Not enough arguments error

问题

以下是翻译好的内容：

以下代码尝试使用位于RequestDetails.FormData中的有效负载发送POST API请求。当我运行main.go函数时，我得到以下错误。

  1. go run main.go
  2. # command-line-arguments
  3. ./main.go:53:17: 调用http.HandleFunc时参数不足
  4. ./main.go:53:33: 调用reqDetails.Send时参数不足
  5.         有 ()
  6.         需要 (http.ResponseWriter, *http.Request)
  7. ./main.go:53:33: reqDetails.Send() 用作值

以下是代码。有人知道我在这里做错了什么吗？非常感谢您的帮助。

  1. //main.go
  3. package main
  5. import (
  6. 	"bytes"
  7. 	"encoding/json"
  8. 	"fmt"
  9. 	"log"
  10. 	"net/http"
  11. )
  13. // RequestDetails 包含Send的输入数据
  14. type RequestDetails struct {
  15. 	EndPoint string
  16. 	FormType string
  17. 	FormData map[string]string
  18. }
  20. // Send 向端点发送API POST请求
  21. func (rd RequestDetails) Send(w http.ResponseWriter, r *http.Request) {
  23. 	json_data, err := json.Marshal(rd.FormData)
  25. 	if err != nil {
  26. 		log.Fatal(err)
  27. 	}
  29. 	resp, err := http.Post(rd.EndPoint, rd.FormType, bytes.NewBuffer(json_data))
  31. 	if err != nil {
  32. 		log.Fatal(err)
  33. 	}
  35. 	fmt.Println(resp)
  37. }
  39. func main() {
  40. 	m := map[string]string{
  41. 		"AuthParamOne":   "AP0000001",
  42. 		"AuthParamTwo":   "AP0000002",
  43. 		"AuthParamThree": "AP0000003",
  44. 	}
  46. 	reqDetails := RequestDetails{
  47. 		EndPoint: "https://httpbin.org/post",
  48. 		FormType: "application/json",
  49. 		FormData: m,
  50. 	}
  52. 	http.HandleFunc(reqDetails.Send())
  53. }
英文:

The following code attempts to send a POST API request with a payload that is in RequestDetails.FormData. When I run main.go function, then I get the following errors.

  1. go run main.go
  2. # command-line-arguments
  3. ./main.go:53:17: not enough arguments in call to http.HandleFunc
  4. ./main.go:53:33: not enough arguments in call to reqDetails.Send
  5.         have ()
  6.         want (http.ResponseWriter, *http.Request)
  7. ./main.go:53:33: reqDetails.Send() used as value

The code is available below. Anybody knows what I could do wrong here? Thanks a lot for your help.

  1. //main.go
  3. package main
  5. import (
  6. 	"bytes"
  7. 	"encoding/json"
  8. 	"fmt"
  9. 	"log"
  10. 	"net/http"
  11. )
  13. // RequestDetails contains input data for Send
  14. type RequestDetails struct {
  15. 	EndPoint string
  16. 	FormType string
  17. 	FormData map[string]string
  18. }
  20. // Send sends API POST request to an endpoint
  21. func (rd RequestDetails) Send(w http.ResponseWriter, r *http.Request) {
  23. 	json_data, err := json.Marshal(rd.FormData)
  25. 	if err != nil {
  26. 		log.Fatal(err)
  27. 	}
  29. 	resp, err := http.Post(rd.EndPoint, rd.FormType, bytes.NewBuffer(json_data))
  31. 	if err != nil {
  32. 		log.Fatal(err)
  33. 	}
  35. 	fmt.Println(resp)
  37. }
  39. func main() {
  40. 	m := map[string]string{
  41. 		"AuthParamOne":   "AP0000001",
  42. 		"AuthParamTwo":   "AP0000002",
  43. 		"AuthParamThree": "AP0000003",
  44. 	}
  46. 	reqDetails := RequestDetails{
  47. 		EndPoint: "https://httpbin.org/post",
  48. 		FormType: "application/json",
  49. 		FormData: m,
  50. 	}
  52. 	http.HandleFunc(reqDetails.Send())
  53. }

答案1

得分: 3

你必须在下面的代码中使用HandleFunc：

  1. func HandleFunc(pattern string, handler func(ResponseWriter, *Request))

对于上面的代码，请按照以下方式操作：

  1. http.HandleFunc("/test", reqDetails.Send) //-> 添加引用而不是调用'reqDetails.Send()'

参考链接：https://pkg.go.dev/net/http#HandleFunc

请投票支持 Golang – 发送 API POST 请求 – 参数不足错误

英文:

you have to use HandleFunc in following below:

  1. func HandleFunc(pattern string, handler func(ResponseWriter, *Request))

for code above follow this:

  1. http.HandleFunc("/test",reqDetails.Send) //-> add reference instead of calling 'reqDetails.Send()'

reference: https://pkg.go.dev/net/http#HandleFunc

please vote up Golang – 发送 API POST 请求 – 参数不足错误

答案2

得分: 2

在你的Send方法中，你没有使用w http.ResponseWriter和r *http.Request，所以看起来你不需要它们：

  1. func (rd RequestDetails) Send() {...

另外，在你的最后一行，HandleFunc需要不同的参数，这在你的情况下也是不必要的。只需尝试运行Send方法：

  1. reqDetails.Send()

整个main.go文件如下：

  1. //main.go
  3. package main
  5. import (
  6. 	"bytes"
  7. 	"encoding/json"
  8. 	"fmt"
  9. 	"log"
  10. 	"net/http"
  11. )
  13. // RequestDetails包含Send方法的输入数据
  14. type RequestDetails struct {
  15. 	EndPoint string
  16. 	FormType string
  17. 	FormData map[string]string
  18. }
  20. // Send向端点发送API POST请求
  21. func (rd RequestDetails) Send() {
  23. 	json_data, err := json.Marshal(rd.FormData)
  25. 	if err != nil {
  26. 		log.Fatal(err)
  27. 	}
  29. 	resp, err := http.Post(rd.EndPoint, rd.FormType, bytes.NewBuffer(json_data))
  31. 	if err != nil {
  32. 		log.Fatal(err)
  33. 	}
  35. 	fmt.Println(resp)
  37. }
  39. func main() {
  40. 	m := map[string]string{
  41. 		"AuthParamOne":   "AP0000001",
  42. 		"AuthParamTwo":   "AP0000002",
  43. 		"AuthParamThree": "AP0000003",
  44. 	}
  46. 	reqDetails := RequestDetails{
  47. 		EndPoint: "https://httpbin.org/post",
  48. 		FormType: "application/json",
  49. 		FormData: m,
  50. 	}
  52. 	reqDetails.Send()
  53. }
英文:

In your Send method, you don't make use of w http.ResponseWriter, r *http.Request, So it seems you don't need them:

  1. func (rd RequestDetails) Send() {...

Also in your last line, HandleFunc requires different arguments which once again is not necessary in your case. Just try to run the Send method:

  1. reqDetails.Send()

The whole main.go file:

  1. //main.go
  3. package main
  5. import (
  6. 	"bytes"
  7. 	"encoding/json"
  8. 	"fmt"
  9. 	"log"
  10. 	"net/http"
  11. )
  13. // RequestDetails contains input data for Send
  14. type RequestDetails struct {
  15. 	EndPoint string
  16. 	FormType string
  17. 	FormData map[string]string
  18. }
  20. // Send sends API POST request to an endpoint
  21. func (rd RequestDetails) Send() {
  23. 	json_data, err := json.Marshal(rd.FormData)
  25. 	if err != nil {
  26. 		log.Fatal(err)
  27. 	}
  29. 	resp, err := http.Post(rd.EndPoint, rd.FormType, bytes.NewBuffer(json_data))
  31. 	if err != nil {
  32. 		log.Fatal(err)
  33. 	}
  35. 	fmt.Println(resp)
  37. }
  39. func main() {
  40. 	m := map[string]string{
  41. 		"AuthParamOne":   "AP0000001",
  42. 		"AuthParamTwo":   "AP0000002",
  43. 		"AuthParamThree": "AP0000003",
  44. 	}
  46. 	reqDetails := RequestDetails{
  47. 		EndPoint: "https://httpbin.org/post",
  48. 		FormType: "application/json",
  49. 		FormData: m,
  50. 	}
  52. 	reqDetails.Send()
  53. }

答案3

得分: 0

如果你的代码像这样：

  1. watcher := bufio.NewReader(os.Stdin)
  2. input, _ := watcher.ReadString()    
  3. fmt.Println(input)

你需要这样来读取一行：

  1. old -> input, _ := watcher.ReadString()   
  2. new -> input, _ := watcher.ReadString('\n')
英文:

if your code like this

  1. watcher := bufio.NewReader(os.Stdin)
  2. input, _ := watcher.ReadString()    
  3. fmt.Println(input)

you needed this for reading line line

  1. old -> input, _ := watcher.ReadString()   
  2. new -> input, _ := watcher.ReadString('\n')

huangapple
  • 本文由 发表于 2022年2月6日 08:52:49
  • 转载请务必保留本文链接：https://go.coder-hub.com/71003377.html
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