gin部分使用

package main

import (
	"fmt"
	"github.com/gin-gonic/gin"
	"net/http"
)

type LoginForm struct {
	User     string `form:"user" binding:"required"`
	Password string `form:"password" binding:"required"`
}

func main() {
	r := gin.Default()
	r.MaxMultipartMemory = 8 << 20 //8M
	//r.LoadHTMLGlob("templates/*")
	r.POST("/login", logInHandler)
	r.POST("/form-post", formPostHandler)
	r.GET("/someJson", someJson)
	r.GET("/index", userIndex)
	r.GET("/pure-json", pureJsonHandler)
	r.GET("/json", JsonHandler)
	r.POST("/post", postHandler)
	r.GET("secure-json", securejsonHandler)
	r.POST("/upload", uploadHandler)
	r.POST("/uploads", uploadsHandler)
	r.GET("/someDataFromReader", dataHeadler)
	r.Run()

}

func dataHeadler(c *gin.Context) {
	get, err := http.Get("https://www.baidu.com")
	if err != nil || get.StatusCode != http.StatusOK {
		c.Status(http.StatusBadRequest)
		return
	}

	reader := get.Body
	contentLength := get.ContentLength
	contentType := get.Header.Get("Content-Type")
	extraheaders := map[string]string{
		"Content-Disposition": `attachment; filename="gopher.png"`,
	}
	c.DataFromReader(http.StatusOK, contentLength, contentType, reader, extraheaders)
}

func uploadsHandler(c *gin.Context) {

}

func uploadHandler(c *gin.Context) {
	file, _ := c.FormFile("file") //这里说明一下.在进行文件上传的时候,
	// 文件类型要选择file类型,.文件参数要与这的参数一直才可以被识别.产上传能成功.否则就会报错
	fmt.Println(file.Filename)
	dst := "./" + file.Filename
	err := c.SaveUploadedFile(file, dst)
	if err != nil {
		fmt.Println(err)
		return
	}
	c.JSON(http.StatusOK, gin.H{
		"msg": "ok",
	})

}
func securejsonHandler(c *gin.Context) {
	name := []string{"lean", "austin", "foo"}
	name1 := map[string]string{"name": "mingzi", "mingzi": "name"}
	c.SecureJSON(http.StatusOK, name)
	c.SecureJSON(http.StatusOK, name1)

}

func postHandler(c *gin.Context) {
	id := c.Query("id")
	page := c.DefaultQuery("page", "0")
	name := c.PostForm("name")
	message := c.PostForm("message")
	fmt.Printf("id: %s,page: %s,name:%s,message:%s", id, page, name, message)
}

func pureJsonHandler(c *gin.Context) {
	c.JSON(http.StatusOK, gin.H{
		"html": "<b>Hello, world!</b>",
	})
}
func JsonHandler(c *gin.Context) {
	c.PureJSON(http.StatusOK, gin.H{
		"html": "<b>Hello, world!</b>",
	})
}

func formPostHandler(c *gin.Context) {
	form := c.PostForm("message")
	nick := c.DefaultPostForm("nick", "anonymous")
	c.JSON(http.StatusOK, gin.H{
		"status":  "posted",
		"message": form,
		"nick":    nick,
	})
}

func someJson(c *gin.Context) {
	m := map[string]interface{}{
		"lang": "go语言",
		"tag":  "<br>",
	}
	c.AsciiJSON(http.StatusOK, m)
}

func userIndex(c *gin.Context) {
	c.HTML(http.StatusOK, "index.html", gin.H{
		"title": "我就是title",
	})
}

func logInHandler(c *gin.Context) {
	var form LoginForm
	err := c.ShouldBind(&form)
	if err != nil {
		c.JSON(http.StatusUnauthorized, gin.H{
			"status": "unauthorized",
		})
	} else {
		c.JSON(http.StatusOK, gin.H{
			"status": "you are logged in",
		})
	}

}