一.Gin框架的安装

上个星期花了几个小时都搞不定，今天就打算把全部文件都给删掉，重新安装试一下，这次我花了好久从CSDN上找资料，找到一个有详细操作的，于是我跟他的思路走，没想到终于成功了（他里面说不用在GOPATH目录下，可能之前我一直都是在GOPATH目录下工作的原因导致我之前操作错误吧）
解决问题的链接：https://blog.csdn.net/qq_35549286/article/details/115870519?ops_request_misc=&request_id=&biz_id=102&utm_term=%22github.com/gin-gonic/gin@v1.7&utm_medium=distribute.pc_search_result.none-task-blog-2_allsobaiduweb~default-1-115870519.first_rank_v2_pc_rank_v29&spm=1018.2226.3001.4187
代码：

package mainimport "github.com/gin-gonic/gin"func main() {engine := gin.Default()engine.GET("/", func(context *gin.Context) {context.String(200, "hello, gin")})engine.Run()
}

结果：

二.处理http请求

处理http请求有两种方式：
1.Router方式(个人感觉这种比较容易记住）

package mainimport ("fmt""github.com/gin-gonic/gin"
)func main() {engine := gin.Default()engine.GET("/name", func(context *gin.Context) {fmt.Println(context.FullPath())name := context.Query("name")fmt.Println(name)context.Writer.Write([]byte("你好，" + name))})engine.POST("/login", func(context *gin.Context) {name, exist := context.GetPostForm("username")//这里如果有数据username的话，exist为真if exist {fmt.Println(name)}password, exist := context.GetPostForm("password")if exist {fmt.Println(password)}context.Writer.Write([]byte("你好，" + name))})engine.DELETE("/user/:id", func(context *gin.Context) {userID := context.Param("id")context.Writer.Write([]byte("delete userID:" + userID))})engine.Run(":9000")
}

结果：



2.Handle方式

package mainimport ("fmt""github.com/gin-gonic/gin"
)func main() {engine := gin.Default()//第一个参数表示方式，有:GET，POST等engine.Handle("GET", "/name", func(context *gin.Context) {fmt.Println(context.FullPath())name := context.Query("name")fmt.Println(name)context.Writer.Write([]byte("你好，" + name))})engine.Handle("POST", "/name", func(context *gin.Context) {name := context.PostForm("username")password := context.PostForm("password")fmt.Println(password)context.Writer.Write([]byte("你好啊，" + name))})engine.Run(":9000")
}

结果：

多数据处理：

package mainimport ("fmt""github.com/gin-gonic/gin""log"
)func main() {engine := gin.Default()engine.GET("/hello", func(context *gin.Context) {fmt.Println(context.FullPath())var student Studenterr := context.ShouldBindQuery(&student)if err != nil {log.Fatal(err.Error())return}fmt.Println(student.Name)fmt.Println(student.Sex)fmt.Println(student.Age)context.Writer.Write([]byte("你好：" + student.Name))})engine.Run()
}type Student struct {Name string `form:"name""`Sex  string `form:"sex"`Age  int    `form:"age"`
}

结果：

获取数据：

package mainimport ("fmt""github.com/gin-gonic/gin""log"
)func main() {engine := gin.Default()engine.POST("/name", func(context *gin.Context) {fmt.Println(context.FullPath())var student Studenterr := context.ShouldBind(&student)if err != nil {log.Fatal(err.Error())return}fmt.Println(student.Name)context.Writer.Write([]byte("你好：" + student.Name + " 手机号码： " + student.Phone))})engine.Run()
}type Student struct {Name     string `form:"name""`Phone    string `form:"phone"`Password int    `form:"password"`
}

结果：

获取json格式的数据：

package mainimport ("fmt""github.com/gin-gonic/gin""log"
)func main() {engine := gin.Default()engine.POST("/json", func(context *gin.Context) {fmt.Println(context.FullPath())var student Student//主要是下面这一行代码err := context.BindJSON(&student)if err != nil {log.Fatal(err.Error())return}fmt.Println(student.Name)context.Writer.Write([]byte("你好：" + student.Name + " 手机号码： " + student.Phone))})engine.Run()
}type Student struct {Name     string `form:"name""`Phone    string `form:"phone"`Password int    `form:"password"`
}

发送：

{"name":"Alice","password":111111,"phone":"000000"
}

结果：