英文:
Golang Get all POST Form data using PostParams and get values as string
问题
我想获取所有的表单数据并将其作为字符串获取值，但是使用PostParams我能够获取所有的表单数据，但是值是作为数组键：[值]，我如何将所有的表单数据作为字符串值获取？
[编辑]
我可能没有表达清楚，但我需要将整个表单作为JSON获取，因为我需要将表单数据发送到另一个需要JSON数据作为请求体的API。
form.html
<form>
<input type='text' name='key' />
<input type='text' name='key2' />
</form>
script.js
$.ajax( {
url: '/post/action',
type: 'POST',
data: new FormData(this),
processData: false,
contentType: false
}).done(function(r) {
console.log(r);
});
action.go
func PostAction(c echo.Context) error {
form, _ := c.FormParams()
b, _ := json.Marshal(form)
log.Println(b) // 这将打印：key: [value], key2: [value]
// 我想要将值作为字符串获取：key: value, key2: value
// ..其他函数、返回等
}
我如何将表单值作为字符串获取？
或者是否有另一个函数可以实现这个功能？
非常感谢您的帮助。
英文:
I want to get all the post form data and get the values as string, however using PostParams I am able to get all the post data, but the values are as array key: [value], how can I get all the form data as string values?
[Edit]
I may not stated clearly, but I need to get the whole form as JSON, because I need to send the form data to another API which need the body as JSON data
form.html
<form>
<input type='text' name='key' />
<input type='text' name='key2' />
</form>
script.js
$.ajax( {
url: '/post/action',
type: 'POST',
data: new FormData(this),
processData: false,
contentType: false
}).done(function(r) {
console.log(r);
});
action.go
func PostAction(c echo.Context) error {
form, _ := c.FormParams()
b, _ := json.Marshal(form)
log.Println(b) // this will print: key: [value], key2: [value]
// I want to get value as string: key: value, key2: value
// ..other function, return, etc
}
How can I get the form values as string?
Or is there another function that does this?
Thank you very much in advance
答案1
得分: 3
不需要对已解码的表单进行JSON编组，只需执行以下操作：
form["key"][0]
form["key2"][0]
请参阅关于c.FormParams的文档，然后点击返回类型以查看其文档，您会注意到它只是标准库的url.Values类型，它被定义为字符串切片的映射（即map[string][]string）。
如果您需要将url.Values类型的值转换为“简单对象”，可以使用以下代码将其转换为map[string]string：
o := make(map[string]string, len(form))
for k, v := range form {
// 如果您确定v[0]存在
o[k] = v[0]
// 如果您不确定v[0]是否存在，请先进行检查
if len(v) > 0 {
o[k] = v[0]
}
}
data, err := json.Marshal(o)
if err != nil {
return err
}
// ...
英文:
No need to JSON marshal the already decoded form, simply do:
form["key"][0]
form["key2"][0]
See the docs on c.FormParams and then click on the return type to see its documentation, and you'll notice that it's just the stdlib's url.Values type, which is defined as a map of string slices (i.e., map[string][]string).
If you need to convert a value of type url.Values to a "simple object", you can convert it to a map[string]string using the following code:
o := make(map[string]string, len(form))
for k, v := range form {
// if you are certain v[0] is present
o[k] = v[0]
// if you are not sure v[0] is present, check first
if len(v) > 0 {
o[k] = v[0]
}
}
data, err := json.Marshal(o)
if err != nil {
return err
}
// ...
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