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gin框架

news 来源：原创 2025/5/23 6:54:02

package main

import (
	"net/http"

	"github.com/gin-gonic/gin"
)

func main() {
	r := gin.Default()
	r.GET("/", func(c *gin.Context) { //配置路由
		c.String(200, "%v", "你好") //状态码和格式化输出的内容
	})
	r.POST("/add", func(c *gin.Context) {
		c.String(200, "123")
	})
	r.PUT("/put", func(c *gin.Context) {
		c.String(http.StatusOK, "123")
	})
	r.Run(":8000")
}

同时可以使用热加载的工具辅助

package main

import (
	"net/http"

	"github.com/gin-gonic/gin"
)

type Article struct {
	Title   string
	Desc    string
	Content string
}

func main() {
	r := gin.Default()
	r.LoadHTMLGlob("templates/*")
	r.GET("/", func(c *gin.Context) {
		c.JSON(http.StatusOK, map[string]interface{}{ //json数据
			"success": true,
			"msg":     "hasd",
		})
	})
	r.GET("/json2", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{ //别名
			"success": true,
			"msg":     "hasd",
		})
	})
	r.GET("/json", func(c *gin.Context) {
		a := &Article{
			Title:   "123",
			Content: "1234",
			Desc:    "545",
		}
		c.JSON(http.StatusOK, a)
	})
	r.GET("/jsonp", func(c *gin.Context) { //处理跨域
		a := &Article{
			Title:   "123",
			Content: "1234",
			Desc:    "545",
		}
		c.JSONP(http.StatusOK, a)
	})
	r.GET("/xml", func(c *gin.Context) {
		c.XML(http.StatusOK, gin.H{ //json数据
			"success": true,
			"msg":     "hasd",
		})
	})
	r.GET("/news", func(c *gin.Context) {
		c.HTML(http.StatusOK, "news.html", gin.H{ //json数据
			"success": true,
			"msg":     "hasd",
		})
	})
	r.Run()
}

json,jsonp,xml,HTML等数据的加载，注意需要渲染模板r.LoadHTMLGlob("templates/*")

r.LoadHTMLGlob("templates/**/*")

**表示一层目录，*表示所有文件，这时候需要给html文件起个别名

输出变量通过{{.xxx}}

定义变量输出变量

{{$t:=.success}}
        {{$t}}

if条件判断

range遍历

with解构数据，直接通过.访问

自定义模板函数

package main

import (
	"net/http"
	"text/template"
	"time"

	"github.com/gin-gonic/gin"
)

type Article struct {
	Title   string
	Desc    string
	Content string
}

func UnixToTime(timestamp int) string {
	t := time.Unix(int64(timestamp), 0)
	return t.Format("2006-01-02 15:04:05")
}
func main() {
	r := gin.Default()
	r.SetFuncMap(template.FuncMap{
		"UnixToTime": UnixToTime,
	})
	r.LoadHTMLGlob("templates/*")
	r.GET("/", func(c *gin.Context) {
		c.JSON(http.StatusOK, map[string]interface{}{ //json数据
			"success": true,
			"msg":     "hasd",
		})
	})
	r.GET("/json2", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{ //别名
			"success": true,
			"msg":     "hasd",
		})
	})
	r.GET("/json", func(c *gin.Context) {
		a := &Article{
			Title:   "123",
			Content: "1234",
			Desc:    "545",
		}
		c.JSON(http.StatusOK, a)
	})
	r.GET("/jsonp", func(c *gin.Context) { //处理跨域
		a := &Article{
			Title:   "123",
			Content: "1234",
			Desc:    "545",
		}
		c.JSONP(http.StatusOK, a)
	})
	r.GET("/xml", func(c *gin.Context) {
		c.XML(http.StatusOK, gin.H{ //json数据
			"success": true,
			"msg":     "hasd",
		})
	})
	r.GET("/news", func(c *gin.Context) {
		c.HTML(http.StatusOK, "news.html", gin.H{ //json数据
			"success": true,
			"msg":     "hasd",
			"date":    1741746247,
		})
	})
	r.Run()
}

<body>
    <h2>
       
        {{UnixToTime .date}}
    </h2>
</body>

注意要写在加载模板之前

引入外部公共模板

引入静态文件

get方法传参获取

	r.GET("/get", func(c *gin.Context) {
		username := c.Query("username")
		age := c.Query("age")
		page := c.DefaultQuery("page", "1")
		c.JSON(http.StatusOK, map[string]interface{}{ //json数据
			"success": username,
			"age":     age,
			"page":    page,
		})
	})

r.POST("/post", func(c *gin.Context) {
		username := c.PostForm("username")
		password := c.PostForm("password")
		c.JSON(http.StatusOK, map[string]interface{}{ //json数据
			"username": username,
			"password": password,
		})
	})

获取post传参

	r.POST("/post", func(c *gin.Context) {
		username := c.PostForm("username")
		password := c.DefaultPostForm("password", "213")
		c.JSON(http.StatusOK, map[string]interface{}{ //json数据
			"username": username,
			"password": password,
		})
	})

获取get post传递的数据绑定到结构体

type UserInfo struct {
	Username string `json:"username" form:"username"`
	Password string `json:"password" form:"password"` //json表示把返回的进行小写，后边匹配的表单
}

r.GET("/getUser", func(c *gin.Context) {
		user := &UserInfo{}
		if err := c.ShouldBind(&user); err == nil {
			c.JSON(http.StatusOK, user)
		} else {
			c.JSON(http.StatusOK, gin.H{
				"err": err.Error(),
			})
		}
	})

xml

type AArticle struct {
	Title   string `json:"title" xml:"title"`
	Content string `json:"password" xml:"content"`
}

	r.POST("/postXml", func(c *gin.Context) {
		xmlSliceData, _ := c.GetRawData()
		article := &AArticle{}
		if err := xml.Unmarshal(xmlSliceData, &article); err == nil {
			c.JSON(http.StatusOK, article)
		} else {
			c.JSON(http.StatusBadRequest, gin.H{
				"err": err.Error(),
			})
		}
	})

动态路由

	r.GET("/list/:cid", func(c *gin.Context) {
		cid := c.Param("cid")
		c.String(200, "%v", cid)
	})

路由分组

apiRouters := r.Group("/api")
	{
		apiRouters.GET("/", func(c *gin.Context) {
			c.String(200, "asdasd")
		})
		apiRouters.GET("/sad", func(c *gin.Context) {
			c.String(200, "sad")
		})
	}