英文:
Form value empty after post
问题
我在Go语言中读取HTML表单的值时遇到了问题，这本应该很简单。不知何故，在我的Auth_login处理程序中，'user'的值始终为空，即使我填写下面的表单并按下'submit'按钮。
当通过HTTP post方法调用/login URL时调用的处理程序：
func Auth_login(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
user := r.PostFormValue("username")
// 其他操作在这里
}
相关表单（Slim格式）：
form action=/login method=post
br
| Name:
br
input#username type=text
br
| Password:
br
input#password type=password
br
input type=submit
a href=/login Cancel
在尝试读取HTML表单字段时，我是否做错了什么？
英文:
I am having trouble reading a value from an HTML form in Go, which should be straight forward. For some reason, the value 'user' in my Auth_login handler is always empty, even after I fill out the form below and press the 'submit' button.
Handler that is called when the /login url is called by an HTTP post method:
func Auth_login(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
user := r.PostFormValue("username")
// Other actions here
}
Related form (in Slim format):
form action=/login method=post
br
| Name:
br
input#username type=text
br
| Password:
br
input#password type=password
br
input type=submit
a href=/login Cancel
Am I doing something wrong when trying to read the html form field?
答案1
得分: 3
我刚刚通过查看另一个网站的源代码找到了答案。如果有人遇到类似的问题，我通过在我想要在Go中解析的每个文本框中添加一个'name'值来修复它。例如，上面的Slim代码将变成这样：
form action=/login method=post
br
| 名称：
br
input#username type=text name=username
br
| 密码：
br
input#password type=password name=password
br
input type=submit
a href=/login 取消
英文:
I just figured out the answer by looking at another website's source code. In case anyone has a similar problem, I fixed it by adding a 'name' value to each of the textboxes that I wanted to parse in Go. For example, the Slim code above would become this:
form action=/login method=post
br
| Name:
br
input#username type=text name=username
br
| Password:
br
input#password type=password name=password
br
input type=submit
a href=/login Cancel
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