How do you send an HTTP PATCH request in Go?
In HTTP, the PATCH request method is used to apply partial modifications to a resource. It is similar to the PUT request method, which is used to update an entire resource, but the difference is that the PATCH request method applies partial updates to a resource. The PATCH request method allows clients to update only the specific parts of a resource that have changed, rather than sending the entire resource to the server. This can be useful in situations where resources are large or where network bandwidth is limited. The PATCH request method is defined in RFC 5789 and is one of the HTTP methods used for CRUD (Create, Read, Update, Delete) operations.
HTTP PATCH request
To send an HTTP PATCH request in Go, you can use the net/http package provided by the standard library. Here's an example code snippet:
Example
package main
import (
"bytes"
"encoding/json"
"net/http"
)
func main() {
url := "http://example.com/api/resource/1"
payload := map[string]string{"name": "New Name"}
// encode payload to JSON
jsonPayload, err := json.Marshal(payload)
if err != nil {
panic(err)
}
// create new HTTP PATCH request with JSON payload
req, err := http.NewRequest("PATCH", url, bytes.NewBuffer(jsonPayload))
if err != nil {
panic(err)
}
// set content-type header to JSON
req.Header.Set("Content-Type", "application/json")
// create HTTP client and execute request
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
panic(err)
}
defer resp.Body.Close()
// handle response
// ...
}
HTTP PATCH request using GIN
To send an HTTP PATCH request in Go Gin, you can use the net/http package provided by the standard library. Here's an example code snippet:
Example
package main
import (
"bytes"
"encoding/json"
"net/http"
"github.com/gin-gonic/gin"
)
func main() {
r := gin.Default()
r.PATCH("/api/resource/:id", func(c *gin.Context) {
id := c.Param("id")
url := "http://example.com/api/resource/" + id
payload := map[string]string{"name": "New Name"}
// encode payload to JSON
jsonPayload, err := json.Marshal(payload)
if err != nil {
c.AbortWithStatus(http.StatusInternalServerError)
return
}
// create new HTTP PATCH request with JSON payload
req, err := http.NewRequest("PATCH", url, bytes.NewBuffer(jsonPayload))
if err != nil {
c.AbortWithStatus(http.StatusInternalServerError)
return
}
// set content-type header to JSON
req.Header.Set("Content-Type", "application/json")
// create HTTP client and execute request
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
c.AbortWithStatus(http.StatusInternalServerError)
return
}
defer resp.Body.Close()
// handle response
// ...
c.Status(resp.StatusCode)
})
r.Run(":8080")
}
HTTP PATCH request using Beego
Example
package main
import (
"fmt"
"github.com/astaxie/beego/httplib"
)
func main() {
url := "https://example.com/api/user/123"
body := []byte(`{"name": "John"}`)
req := httplib.Patch(url)
req.Body(body)
resp, err := req.Response()
if err != nil {
fmt.Println("Error:", err)
return
}
fmt.Println("Response status:", resp.Status)
}
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