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Gin framework parameter binding is how to achieve, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain in detail for you, people with this need can come to learn, I hope you can gain something.

In order to obtain the relevant parameters of the request more conveniently and improve the development efficiency, we can identify the request data type based on the request Content-Type and use the reflection mechanism to automatically extract the QueryString, form form, JSON, XML and other parameters into the structure. The following sample code demonstrates the power of .ShouldBind (), which automatically extracts data of type JSON, form form, and QueryString based on requests, and binds values to specified structure objects.

The following example binds parameters to QueryString, form, and json, respectively.

Note:

1. Uppercase attribute names in the body of the structure

2. Add address character:

Code:

Package mainimport ("github.com/gin-gonic/gin"net/http") type User struct {Username string `json: "user" form: "userform" `Password string `json: "pwd" form: "pwdform" `} func main () {r: = gin.Default () var u User / / queryString data binding r.GET ("/ user") Func (c * gin.Context) {/ / Parameter binding err: = c.ShouldBind (& u) if err = = nil {c.JSON (http.StatusOK, gin.H {"user": u.Username, "pwd": u.Password })}) / / form form data binding r.POST ("/ form", func (c * gin.Context) {/ / Parameter binding err: = c.ShouldBind (& u) if err = = nil {c.JSON (http.StatusOK) Gin.H {"user": u.Username, "pwd": u.Password,})}) / / form form data binding r.POST ("/ json" Func (c * gin.Context) {/ / Parameter binding err: = c.ShouldBind (& u) if err = = nil {c.JSON (http.StatusOK, gin.H {"user": u.Username, "pwd": u.Password }) r.Run (": 9090")}

Debug:

The running results are simulated using postman, which are:

The result of parameter binding to querystring:

The result of parameter binding to the form form:

The result of parameter binding to json:

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