响应

r.GET("/user/save", func(ctx *gin.Context) {
    ctx.String(http.StatusOK, "this is a %s", "ms string response")
})

r.GET("/user/save", func (ctx *gin.Context) {
    ctx.JSON(http.StatusOK, gin.H{
        "success": true,
    })
})

type XmlUser struct {
    Id   int64  `xml:"id"`
    Name string `xml:"name"`
}
r.GET("/user/save", func (ctx *gin.Context) {
    u := XmlUser{
        Id:   11,
        Name: "zhangsan",
    }
    ctx.XML(http.StatusOK, u)
})

r.GET("/user/save", func (ctx *gin.Context) {
    //ctx.File("./1.png")
    ctx.FileAttachment("./1.png", "2.png")
})

r.GET("/user/save", func(ctx *gin.Context) {
    ctx.Header("test", "headertest")
})

r.GET("/user/save", func(ctx *gin.Context) {
    ctx.Redirect(http.StatusMovedPermanently, "http://www.baidu.com")
})

r.GET("/user/save", func(ctx *gin.Context) {
    ctx.YAML(200, gin.H{"name": "ms", "age": 19})
})