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request.go
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request.go
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package request
import (
"bytes"
"context"
"encoding/json"
"encoding/xml"
"errors"
"io"
"mime/multipart"
"net/http"
"os"
"github.com/cmliang/weapp/v3/logger"
)
type Request struct {
http *http.Client
// 获取日志记录器
logger func() logger.Logger
contentType ContentType
}
func NewRequest(http *http.Client, ctp ContentType, logger func() logger.Logger) *Request {
return &Request{
http: http,
logger: logger,
contentType: ctp,
}
}
func (cli *Request) Get(url string, response interface{}) error {
cli.logger().Info(context.Background(), "request url: %s", url)
resp, err := cli.http.Get(url)
if err != nil {
cli.logger().Error(context.Background(), "get error: %s", err)
return err
}
defer resp.Body.Close()
switch cli.contentType {
case ContentTypeXML:
return xml.NewDecoder(resp.Body).Decode(response)
case ContentTypeJSON:
return json.NewDecoder(resp.Body).Decode(response)
default:
return errors.New("invalid content type")
}
}
func (cli *Request) GetWithBody(url string) (*http.Response, error) {
cli.logger().Info(context.Background(), "request url: %s", url)
rsp, err := cli.http.Get(url)
if err != nil {
cli.logger().Error(context.Background(), "get with body error: %s", url)
return nil, err
}
return rsp, nil
}
func (cli *Request) Post(url string, params interface{}, response interface{}) error {
resp, err := cli.PostWithBody(url, params)
if err != nil {
cli.logger().Error(context.Background(), "post error: %s", err)
return err
}
defer resp.Body.Close()
switch cli.contentType {
case ContentTypeXML:
return xml.NewDecoder(resp.Body).Decode(response)
case ContentTypeJSON:
return json.NewDecoder(resp.Body).Decode(response)
default:
return errors.New("invalid content type")
}
}
func (cli *Request) PostWithBody(url string, params interface{}) (*http.Response, error) {
cli.logger().Info(context.Background(), "request url: %s", url)
cli.logger().Info(context.Background(), "request params: %+v", params)
buf := new(bytes.Buffer)
if params != nil {
switch cli.contentType {
case ContentTypeXML:
err := xml.NewEncoder(buf).Encode(params)
if err != nil {
return nil, err
}
case ContentTypeJSON:
enc := json.NewEncoder(buf)
enc.SetEscapeHTML(false)
err := enc.Encode(params)
if err != nil {
return nil, err
}
default:
return nil, errors.New("invalid content type")
}
}
rsp, err := cli.http.Post(url, cli.contentType.String(), buf)
if err != nil {
cli.logger().Error(context.Background(), "post with body error: %s", url)
return nil, err
}
return rsp, nil
}
func (cli *Request) FormPostWithFile(url, field, filename string, response interface{}) error {
file, err := os.Open(filename)
if err != nil {
return err
}
defer file.Close()
return cli.FormPost(url, field, filename, file, response)
}
func (cli *Request) FormPost(url, field, filename string, reader io.Reader, response interface{}) error {
cli.logger().Info(context.Background(), "request url: %s", url)
// Prepare a form that you will submit to that URL.
buf := new(bytes.Buffer)
w := multipart.NewWriter(buf)
fw, err := w.CreateFormFile(field, filename)
if err != nil {
return err
}
if _, err = io.Copy(fw, reader); err != nil {
return err
}
// Don't forget to close the multipart writer.
// If you don't close it, your request will be missing the terminating boundary.
w.Close()
// Now that you have a form, you can submit it to your handler.
req, err := http.NewRequest("POST", url, buf)
if err != nil {
return err
}
// Don't forget to set the content type, this will contain the boundary.
req.Header.Set("Content-Type", w.FormDataContentType())
resp, err := cli.http.Do(req)
if err != nil {
cli.logger().Error(context.Background(), "form post error: %s", err)
return err
}
defer resp.Body.Close()
switch cli.contentType {
case ContentTypeXML:
return xml.NewDecoder(resp.Body).Decode(response)
case ContentTypeJSON:
return json.NewDecoder(resp.Body).Decode(response)
default:
return errors.New("invalid content type")
}
}