feat: add File upload for HttpPost

README.md

@@ -100,6 +100,9 @@ import "github.com/duke-git/lancet/convertor"
 -   [DecodeByte](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#DecodeByte)
 -   [DeepClone](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#DeepClone)
 -   [CopyProperties](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#CopyProperties)
+-   [ToInterface](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ToInterface)
+-   [Utf8ToGbk](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#Utf8ToGbk)
+-   [GbkToUtf8](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#GbkToUtf8)
 
 ### 3. Cryptor package is for data encryption and decryption.
 
@@ -215,6 +218,7 @@ import "github.com/duke-git/lancet/fileutil"
 -   [MTime](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#MTime)
 -   [Sha](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#Sha)
 -   [ReadCsvFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#ReadCsvFile)
+-   [WriteCsvFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#WriteCsvFile)
 -   [WriteStringToFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#WriteStringToFile)
 -   [WriteBytesToFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#WriteBytesToFile)
 
@@ -275,6 +279,7 @@ import "github.com/duke-git/lancet/mathutil"
 -   [LCM](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#LCM)
 -   [Cos](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#Cos)
 -   [Sin](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#Sin)
+-   [Log](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#Log)
 
 ### 9. Netutil package contains functions to get net information and send http request.
 
@@ -320,6 +325,7 @@ import "github.com/duke-git/lancet/random"
 -   [RandNumeral](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandNumeral)
 -   [RandNumeralOrLetter](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandNumeralOrLetter)
 -   [UUIdV4](https://github.com/duke-git/lancet/blob/v1/docs/random.md#UUIdV4)
+-   [RandUniqueIntSlice](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandUniqueIntSlice)
 
 ### 11. Retry package is for executing a function repeatedly until it was successful or canceled by the context.
 
@@ -427,7 +433,7 @@ import "github.com/duke-git/lancet/strutil"
 -   [Trim](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Trim)
 -   [SplitAndTrim](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#SplitAndTrim)
 -   [HideString](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#HideString)
-
+-   [RemoveWhiteSpace](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#RemoveWhiteSpace)
 ### 14. System package contain some functions about os, runtime, shell command.
 
 ```go

README_zh-CN.md

@@ -99,7 +99,9 @@ import "github.com/duke-git/lancet/convertor"
 -   [DecodeByte](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#DecodeByte)
 -   [DeepClone](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#DeepClone)
 -   [CopyProperties](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#CopyProperties)
-
+-   [ToInterface](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ToInterface)
+-   [Utf8ToGbk](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#Utf8ToGbk)
+-   [GbkToUtf8](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#GbkToUtf8)
 ### 3. cryptor 加密包支持数据加密和解密，获取 md5，hash 值。支持 base64, md5, hmac, aes, des, rsa。
 
 ```go
@@ -214,6 +216,7 @@ import "github.com/duke-git/lancet/fileutil"
 -   [MTime](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#MTime)
 -   [Sha](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#Sha)
 -   [ReadCsvFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#ReadCsvFile)
+-   [WriteCsvFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#WriteCsvFile)
 -   [WriteStringToFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#WriteStringToFile)
 -   [WriteBytesToFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#WriteBytesToFile)
 
@@ -274,7 +277,7 @@ import "github.com/duke-git/lancet/mathutil"
 -   [LCM](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#LCM)
 -   [Cos](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#Cos)
 -   [Sin](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#Sin)
-
+-   [Log](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#Log)
 ### 9. netutil 网络包支持获取 ip 地址，发送 http 请求。
 
 ```go
@@ -319,6 +322,7 @@ import "github.com/duke-git/lancet/random"
 -   [RandNumeral](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandNumeral)
 -   [RandNumeralOrLetter](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandNumeralOrLetter)
 -   [UUIdV4](https://github.com/duke-git/lancet/blob/v1/docs/random.md#UUIdV4)
+-   [RandUniqueIntSlice](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandUniqueIntSlice)
 
 ### 11. retry 重试执行函数直到函数运行成功或被 context cancel。
 
@@ -426,6 +430,7 @@ import "github.com/duke-git/lancet/strutil"
 -   [Trim](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Trim)
 -   [SplitAndTrim](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#SplitAndTrim)
 -   [HideString](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#HideString)
+-   [RemoveWhiteSpace](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#RemoveWhiteSpace)
 
 ### 14. system 包含 os, runtime, shell command 相关函数。
 

netutil/http.go

@@ -18,9 +18,11 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
+	"mime/multipart"
 	"net/http"
 	"net/url"
+	"os"
 	"reflect"
 	"regexp"
 	"sort"
@@ -93,6 +95,7 @@ type HttpRequest struct {
 	Headers     http.Header
 	QueryParams url.Values
 	FormData    url.Values
+	File        *File
 	Body        []byte
 }
 
@@ -180,7 +183,11 @@ func (client *HttpClient) SendRequest(request *HttpRequest) (*http.Response, err
 	client.setQueryParam(req, rawUrl, request.QueryParams)
 
 	if request.FormData != nil {
-		client.setFormData(req, request.FormData)
+		if request.File != nil {
+			err = client.setFormData(req, request.FormData, setFile(request.File))
+		} else {
+			err = client.setFormData(req, request.FormData, nil)
+		}
 	}
 
 	client.Request = req
@@ -244,10 +251,79 @@ func (client *HttpClient) setQueryParam(req *http.Request, reqUrl string, queryP
 	return nil
 }
 
-func (client *HttpClient) setFormData(req *http.Request, values url.Values) {
+func (client *HttpClient) setFormData(req *http.Request, values url.Values, setFile SetFileFunc) error {
-	formData := []byte(values.Encode())
+	if setFile != nil {
-	req.Body = ioutil.NopCloser(bytes.NewReader(formData))
+		err := setFile(req, values)
-	req.ContentLength = int64(len(formData))
+		if err != nil {
+			return err
+		}
+	} else {
+		formData := []byte(values.Encode())
+		req.Body = io.NopCloser(bytes.NewReader(formData))
+		req.ContentLength = int64(len(formData))
+	}
+	return nil
+}
+
+type SetFileFunc func(req *http.Request, values url.Values) error
+
+// File struct is a combination of file attributes
+type File struct {
+	Content   []byte
+	Path      string
+	FieldName string
+	FileName  string
+}
+
+// setFile set parameters for http request formdata file upload
+func setFile(f *File) SetFileFunc {
+	return func(req *http.Request, values url.Values) error {
+		body := &bytes.Buffer{}
+		writer := multipart.NewWriter(body)
+
+		for key, vals := range values {
+			for _, val := range vals {
+				err := writer.WriteField(key, val)
+				if err != nil {
+					return err
+				}
+			}
+		}
+
+		if f.Content != nil {
+			part, err := writer.CreateFormFile(f.FieldName, f.FileName)
+			if err != nil {
+				return err
+			}
+			part.Write(f.Content)
+		} else if f.Path != "" {
+			file, err := os.Open(f.Path)
+			if err != nil {
+				return err
+			}
+			defer file.Close()
+
+			part, err := writer.CreateFormFile(f.FieldName, f.FileName)
+			if err != nil {
+				return err
+			}
+			_, err = io.Copy(part, file)
+			if err != nil {
+				return err
+			}
+		}
+
+		err := writer.Close()
+		if err != nil {
+			return err
+		}
+
+		req.Body = io.NopCloser(body)
+		req.Header.Set("Content-Type", writer.FormDataContentType())
+		req.ContentLength = int64(body.Len())
+
+		return nil
+	}
 }
 
 // validateRequest check if a request has url, and valid method.

netutil/http_test.go

@@ -1,12 +1,15 @@
 package netutil
 
 import (
+	"bytes"
 	"encoding/json"
 	"io"
 	"io/ioutil"
 	"log"
 	"net/http"
+	"net/http/httptest"
 	"net/url"
+	"os"
 	"testing"
 
 	"github.com/duke-git/lancet/internal"
@@ -250,3 +253,108 @@ func TestStructToUrlValues(t *testing.T) {
 	assert.Equal("456", queryValues2.Get("userId"))
 	assert.Equal("", queryValues2.Get("name"))
 }
+
+func handleFileRequest(t *testing.T, w http.ResponseWriter, r *http.Request) {
+	err := r.ParseMultipartForm(1024)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	key1 := r.FormValue("key1")
+	expectedKey1 := "value1"
+	if key1 != expectedKey1 {
+		t.Fatalf("expected %s, got %s", expectedKey1, key1)
+	}
+
+	key2 := r.FormValue("key2")
+	expectedKey2 := "value2"
+	if key2 != expectedKey2 {
+		t.Fatalf("expected %s, got %s", expectedKey2, key2)
+	}
+
+	file, header, err := r.FormFile("image")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	expectedFileName := "testImage.jpg"
+	if header.Filename != expectedFileName {
+		t.Fatalf("expected %s, got %s", expectedFileName, header.Filename)
+	}
+
+	defer file.Close()
+
+	content, err := ioutil.ReadAll(file)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	expectedContent := []byte("file content")
+	if !bytes.Equal(content, expectedContent) {
+		t.Fatalf("expected %s, got %s", string(expectedContent), string(content))
+	}
+}
+
+func TestSendRequestWithFileContent(t *testing.T) {
+	handler := http.HandlerFunc(func(writer http.ResponseWriter, request *http.Request) {
+		handleFileRequest(t, writer, request)
+	})
+
+	server := httptest.NewServer(handler)
+	defer server.Close()
+
+	client := NewHttpClient()
+	request := &HttpRequest{
+		RawURL:   server.URL,
+		Method:   "POST",
+		File:     &File{Content: []byte("file content"), FieldName: "image", FileName: "testImage.jpg"},
+		FormData: url.Values{"key1": {"value1"}, "key2": {"value2"}},
+	}
+
+	resp, err := client.SendRequest(request)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		t.Fatalf("expected %d, got %d", http.StatusOK, resp.StatusCode)
+	}
+}
+
+func TestSendRequestWithFilePath(t *testing.T) {
+	handler := http.HandlerFunc(func(writer http.ResponseWriter, request *http.Request) {
+		handleFileRequest(t, writer, request)
+	})
+
+	server := httptest.NewServer(handler)
+	defer server.Close()
+
+	tmpFile, err := ioutil.TempFile("", "testImage.jpg")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	defer os.Remove(tmpFile.Name())
+
+	tmpFile.Write([]byte("file content"))
+	tmpFile.Close()
+
+	client := NewHttpClient()
+	request := &HttpRequest{
+		RawURL:   server.URL,
+		Method:   "POST",
+		File:     &File{Path: tmpFile.Name(), FieldName: "image", FileName: "testImage.jpg"},
+		FormData: url.Values{"key1": {"value1"}, "key2": {"value2"}},
+	}
+
+	resp, err := client.SendRequest(request)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		t.Fatalf("expected %d, got %d", http.StatusOK, resp.StatusCode)
+	}
+}