Why do I receive formatted text data in ajax from GO server
0
- I create an ajax POST to send an image to a GO server
$.ajax({
url: url,
type: "POST",
cache: false,
contentType: false,
processData: false,
data: formData
})
.done(function(e) {
console.log("successed uploading the picture")
console.log(e)
$('.file-upload-image').attr('src', e);
});
- After the GO server received the request and handled the logic, the response returns base64-encoded image string as the ajax response.
outputFile, err := os.Open(outputFileName)
if err != nil {
fmt.Println(err)
return
}
defer outputFile.Close()
// read file content into buffer
reader := bufio.NewReader(outputFile)
content, _ := ioutil.ReadAll(reader)
// Encode as base64.
base64Result := base64.StdEncoding.EncodeToString(content)
base64Result = fmt.Sprintf("data:image/%s;base64,%s", fileSufix, base64Result)
w.Write(byte(base64Result))
Here is the problem: in the console, what I receive in the response appears is something like:
I do not understand what the %v{0xc420158150} is.
How can I get a clean string without %v{0xc420158150} so I can use it in the image src attribute?
ajax go
asked Nov 16 '18 at 3:06
shitoujizushitoujizu
347
|
show 1 more comment
0
- I create an ajax POST to send an image to a GO server
$.ajax({
url: url,
type: "POST",
cache: false,
contentType: false,
processData: false,
data: formData
})
.done(function(e) {
console.log("successed uploading the picture")
console.log(e)
$('.file-upload-image').attr('src', e);
});
- After the GO server received the request and handled the logic, the response returns base64-encoded image string as the ajax response.
outputFile, err := os.Open(outputFileName)
if err != nil {
fmt.Println(err)
return
}
defer outputFile.Close()
// read file content into buffer
reader := bufio.NewReader(outputFile)
content, _ := ioutil.ReadAll(reader)
// Encode as base64.
base64Result := base64.StdEncoding.EncodeToString(content)
base64Result = fmt.Sprintf("data:image/%s;base64,%s", fileSufix, base64Result)
w.Write(byte(base64Result))
Here is the problem: in the console, what I receive in the response appears is something like:
I do not understand what the %v{0xc420158150} is.
How can I get a clean string without %v{0xc420158150} so I can use it in the image src attribute?
ajax go
asked Nov 16 '18 at 3:06
shitoujizushitoujizu
347
fmt.Fprint()accepts anio.Writeras its first argument... you probably wanted to usefmt.Printf()instead
– IronGeek
Nov 16 '18 at 4:02
can you give us the full code of the handler?
– xpare
Nov 16 '18 at 4:34
yes, can. I will update the question when I am home. Thanks for help @xpare
– shitoujizu
Nov 16 '18 at 6:17
@IronGeek I will tryfmt.Printf()
– shitoujizu
Nov 16 '18 at 6:23
@IronGeek When I usefmt.Printf("%v{0xc420158150}", base64Result), just produces thebase64ResultString+{0xc420158150}. So I deleted the confusing part.
– shitoujizu
Nov 16 '18 at 15:45
|
show 1 more comment
0
0
0
- I create an ajax POST to send an image to a GO server
$.ajax({
url: url,
type: "POST",
cache: false,
contentType: false,
processData: false,
data: formData
})
.done(function(e) {
console.log("successed uploading the picture")
console.log(e)
$('.file-upload-image').attr('src', e);
});
- After the GO server received the request and handled the logic, the response returns base64-encoded image string as the ajax response.
outputFile, err := os.Open(outputFileName)
if err != nil {
fmt.Println(err)
return
}
defer outputFile.Close()
// read file content into buffer
reader := bufio.NewReader(outputFile)
content, _ := ioutil.ReadAll(reader)
// Encode as base64.
base64Result := base64.StdEncoding.EncodeToString(content)
base64Result = fmt.Sprintf("data:image/%s;base64,%s", fileSufix, base64Result)
w.Write(byte(base64Result))
Here is the problem: in the console, what I receive in the response appears is something like:
I do not understand what the %v{0xc420158150} is.
How can I get a clean string without %v{0xc420158150} so I can use it in the image src attribute?
ajax go
asked Nov 16 '18 at 3:06
shitoujizushitoujizu
347
- I create an ajax POST to send an image to a GO server
$.ajax({
url: url,
type: "POST",
cache: false,
contentType: false,
processData: false,
data: formData
})
.done(function(e) {
console.log("successed uploading the picture")
console.log(e)
$('.file-upload-image').attr('src', e);
});
- After the GO server received the request and handled the logic, the response returns base64-encoded image string as the ajax response.
outputFile, err := os.Open(outputFileName)
if err != nil {
fmt.Println(err)
return
}
defer outputFile.Close()
// read file content into buffer
reader := bufio.NewReader(outputFile)
content, _ := ioutil.ReadAll(reader)
// Encode as base64.
base64Result := base64.StdEncoding.EncodeToString(content)
base64Result = fmt.Sprintf("data:image/%s;base64,%s", fileSufix, base64Result)
w.Write(byte(base64Result))
Here is the problem: in the console, what I receive in the response appears is something like:
I do not understand what the %v{0xc420158150} is.
How can I get a clean string without %v{0xc420158150} so I can use it in the image src attribute?
ajax go
ajax go
asked Nov 16 '18 at 3:06
shitoujizushitoujizu
347
asked Nov 16 '18 at 3:06
shitoujizushitoujizu
347
edited Nov 16 '18 at 15:47
shitoujizu
asked Nov 16 '18 at 3:06
shitoujizushitoujizu
347
asked Nov 16 '18 at 3:06
shitoujizushitoujizu
347
asked Nov 16 '18 at 3:06
shitoujizushitoujizu
347
347
fmt.Fprint()accepts anio.Writeras its first argument... you probably wanted to usefmt.Printf()instead
– IronGeek
Nov 16 '18 at 4:02
can you give us the full code of the handler?
– xpare
Nov 16 '18 at 4:34
yes, can. I will update the question when I am home. Thanks for help @xpare
– shitoujizu
Nov 16 '18 at 6:17
@IronGeek I will tryfmt.Printf()
– shitoujizu
Nov 16 '18 at 6:23
@IronGeek When I usefmt.Printf("%v{0xc420158150}", base64Result), just produces thebase64ResultString+{0xc420158150}. So I deleted the confusing part.
– shitoujizu
Nov 16 '18 at 15:45
|
show 1 more comment
fmt.Fprint()accepts anio.Writeras its first argument... you probably wanted to usefmt.Printf()instead
– IronGeek
Nov 16 '18 at 4:02
can you give us the full code of the handler?
– xpare
Nov 16 '18 at 4:34
yes, can. I will update the question when I am home. Thanks for help @xpare
– shitoujizu
Nov 16 '18 at 6:17
@IronGeek I will tryfmt.Printf()
– shitoujizu
Nov 16 '18 at 6:23
@IronGeek When I usefmt.Printf("%v{0xc420158150}", base64Result), just produces thebase64ResultString+{0xc420158150}. So I deleted the confusing part.
– shitoujizu
Nov 16 '18 at 15:45
fmt.Fprint() accepts an io.Writer as its first argument... you probably wanted to use fmt.Printf() instead– IronGeek
Nov 16 '18 at 4:02
fmt.Fprint() accepts an io.Writer as its first argument... you probably wanted to use fmt.Printf() instead– IronGeek
Nov 16 '18 at 4:02
can you give us the full code of the handler?
– xpare
Nov 16 '18 at 4:34
can you give us the full code of the handler?
– xpare
Nov 16 '18 at 4:34
yes, can. I will update the question when I am home. Thanks for help @xpare
– shitoujizu
Nov 16 '18 at 6:17
yes, can. I will update the question when I am home. Thanks for help @xpare
– shitoujizu
Nov 16 '18 at 6:17
@IronGeek I will try
fmt.Printf()– shitoujizu
Nov 16 '18 at 6:23
@IronGeek I will try
fmt.Printf()– shitoujizu
Nov 16 '18 at 6:23
@IronGeek When I use
fmt.Printf("%v{0xc420158150}", base64Result), just produces the base64ResultString+{0xc420158150}. So I deleted the confusing part.– shitoujizu
Nov 16 '18 at 15:45
@IronGeek When I use
fmt.Printf("%v{0xc420158150}", base64Result), just produces the base64ResultString+{0xc420158150}. So I deleted the confusing part.– shitoujizu
Nov 16 '18 at 15:45
|
show 1 more comment
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fmt.Fprint()accepts anio.Writeras its first argument... you probably wanted to usefmt.Printf()instead– IronGeek
Nov 16 '18 at 4:02
can you give us the full code of the handler?
– xpare
Nov 16 '18 at 4:34
yes, can. I will update the question when I am home. Thanks for help @xpare
– shitoujizu
Nov 16 '18 at 6:17
@IronGeek I will try
fmt.Printf()– shitoujizu
Nov 16 '18 at 6:23
@IronGeek When I use
fmt.Printf("%v{0xc420158150}", base64Result), just produces thebase64ResultString+{0xc420158150}. So I deleted the confusing part.– shitoujizu
Nov 16 '18 at 15:45