media id uploading image test id successfully get

fileinfo.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+	"os"
+)
+
+func getFileSize(s string) (size int64, err error) {
+	f, err := os.Open(s)
+	if err != nil {
+		size = 0
+		return
+	}
+	fi, err := f.Stat()
+	if err == nil {
+		size = fi.Size()
+	} else {
+		size = 0
+	}
+	return
+}

mediaId.go

@@ -0,0 +1,56 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+//MediaID : json response for uploading media
+type MediaID struct {
+	Type     string `json:"type"`
+	MediaID  string `json:"media_id"`
+	CreateAt int64  `json:"created_at"`
+}
+
+func uploadImage(filename string) (mediaid string) {
+	url, _ := getPostImageURL()
+
+	jstr, _ := postFileForm(filename, url, "media")
+	//{"type":"TYPE","media_id":"MEDIA_ID","created_at":123456789}
+	var m = MediaID{}
+	json.Unmarshal([]byte(jstr), &m)
+	return
+}
+
+func checkImageSanity() bool {
+	//check file size should < 2M
+	fmt.Println(" should check image file size")
+
+	return true
+}
+
+func getPostImageURL() (url string, err error) {
+	return getMediaPostURL("image")
+}
+
+func getPostVoiceURL() (url string, err error) {
+	return getMediaPostURL("voice")
+}
+
+func getPostVideoURL() (url string, err error) {
+	return getMediaPostURL("video")
+}
+
+func getPostThumbURL() (url string, err error) {
+	return getMediaPostURL("thumb")
+}
+
+func getMediaPostURL(t string) (url string, err error) {
+	atk, err := GetAccessToken()
+	if err != nil {
+		url = ""
+	} else {
+		url = fmt.Sprintf("https://api.weixin.qq.com/cgi-bin/media/upload?access_token=%s&type=%s", atk, t)
+	}
+	return
+}

outMsg.go

@@ -31,6 +31,14 @@ func BuildTextMsg(txt string, ToUserName string) (xml string, err error) {
 	return
 }
 
+//BuildLocationMsg doesn't work for build location message
+func BuildLocationMsg(long, lat, precision float64, ToUserName string) (xml string) {
+	msg := buildLocationMsg()
+	e := Encode(msg)
+	xml, _, _, _ = signMsg(e)
+	return
+}
+
 func signMsg(content string) (xml string, timestamp int32, nonce int32, signature string) {
 	timestamp = int32(time.Now().Unix())
 	nonce = rand.Int31()
@@ -198,3 +206,17 @@ func newsMsgTemplate() string {
 </Articles>
 </xml>`
 }
+
+func buildLocationMsg() string {
+	template := `<xml>
+<ToUserName><![CDATA[oUN420bxqFqlx0ZQHciUOesZO3PE]]></ToUserName>
+<FromUserName><![CDATA[gh_f09231355c68]]></FromUserName>
+<CreateTime>1494124221</CreateTime>
+<MsgType><![CDATA[location]]></MsgType>
+<Location_X>23.134521</Location_X>
+<Location_Y>113.358803</Location_Y>
+<Scale>20</Scale>
+<Label><![CDATA[位置信息]]></Label>
+</xml> `
+	return template
+}

server.go

@@ -65,7 +65,12 @@ func answerWechatPost(w http.ResponseWriter, r *http.Request) {
 	}
 	if h.MsgType == "event" {
 		a := ReadEventMsg(d)
-		reply, _ = BuildTextMsg(a.Event+"/"+a.EventKey, h.FromUserName)
+		if a.Event == "LOCATION" {
+			reply = BuildLocationMsg(0, 0, 0, h.FromUserName)
+			fmt.Printf("output %s", reply)
+		} else {
+			reply, _ = BuildTextMsg(a.Event+"/"+a.EventKey, h.FromUserName)
+		}
 	}
 	w.Header().Set("Content-Type", "text/xml; charset=utf-8")
 	fmt.Fprint(w, reply)

upload.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"mime/multipart"
+	"net/http"
+	"os"
+)
+
+//post a file to a url
+func postFileForm(filename string, targetURL string, formFieldName string) (strJSON string, err error) {
+	bodyBuf := &bytes.Buffer{}
+	bodyWriter := multipart.NewWriter(bodyBuf)
+
+	// this step is very important
+	fileWriter, err := bodyWriter.CreateFormFile(formFieldName, filename)
+	if err != nil {
+		fmt.Println(err)
+		return "", err
+	}
+
+	// open file handle
+	fh, err := os.Open(filename)
+	if err != nil {
+		fmt.Println(err)
+		return "", err
+	}
+
+	//iocopy
+	_, err = io.Copy(fileWriter, fh)
+	if err != nil {
+		return "", err
+	}
+
+	contentType := bodyWriter.FormDataContentType()
+	bodyWriter.Close()
+
+	resp, err := http.Post(targetURL, contentType, bodyBuf)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+	r, err := ioutil.ReadAll(resp.Body)
+	strJSON = string(r)
+	if err != nil {
+		return "", err
+	}
+	fmt.Println(resp.Status)
+	fmt.Println(string(strJSON))
+	return strJSON, nil
+}

upload_test.go

@@ -0,0 +1,12 @@
+package main
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestUploadImage(t *testing.T) {
+	SetupConfig()
+	mediaID := uploadImage("media_for_test/640x480.jpg")
+	fmt.Printf("get MediaID: %s ", mediaID)
+}

wechat_hitxy_access_token

@@ -1 +1 @@
-{"access_token":"XAdcyDrlCjqXUsaaK90JVatDMHQ6O23QILWmeIfLMHz2dwSfz9nrnhP0uRsFJQ0V3tKiINDqiVv1_3Z8votOLqIdg760ZWjQSnmQUk9u_Rl2YaMxzHYetLm7Upgi8A1SRYRjAFABIB","expires_in":7200,"created_at":"2017-05-05T16:03:55.521390518+10:00"}
+{"access_token":"-6lyvdFk4jKGE1H0UZBPAzHXz793OXyuXmbjqtdWC0TXFY8KmSUwcL_2dRYYi6k0kp2HwMukFVTKnd1PvfoZrrAjM6dXegRGf1wKQpvobx7C-Zdf-1REcM_BvO9GBJkgQNKeAGAAXU","expires_in":7200,"created_at":"2017-05-07T17:02:29.012072846+10:00"}