XML, JSON and YAML rendering

func main() {
    r := gin.Default()
    // gin.H is a shortcut for map[string]interface{}
    r.GET("/someJSON", func(c *gin.Context) {
        c.JSON(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK})
    })
    r.GET("/moreJSON", func(c *gin.Context) {
        // You also can use a struct
        var msg struct {
            Name    string `json:"user"`
            Message string
            Number  int
        }
        msg.Name = "Lena"
        msg.Message = "hey"
        msg.Number = 123
        // Note that msg.Name becomes "user" in the JSON
        // Will output  :   {"user": "Lena", "Message": "hey", "Number": 123}
        c.JSON(http.StatusOK, msg)
    })
    r.GET("/someXML", func(c *gin.Context) {
        c.XML(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK})
    })
    r.GET("/someYAML", func(c *gin.Context) {
        c.YAML(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK})
    })
    // Listen and serve on 0.0.0.0:8080
    r.Run(":8080")
}

SecureJSON

Using SecureJSON to prevent json hijacking. Default prepends "while(1)," to response body if the given struct is array values.

func main() {
    r := gin.Default()
    // You can also use your own secure json prefix
    // r.SecureJsonPrefix(")]}',\n")
    r.GET("/someJSON", func(c *gin.Context) {
        names := []string{"lena", "austin", "foo"}
        // Will output  :   while(1);["lena","austin","foo"]
        c.SecureJSON(http.StatusOK, names)
    })
    // Listen and serve on 0.0.0.0:8080
    r.Run(":8080")
}

JSONP

Using JSONP to request data from a server in a different domain. Add callback to response body if the query parameter callback exists.

func main() {
    r := gin.Default()
    r.GET("/JSONP?callback=x", func(c *gin.Context) {
        data := map[string]interface{}{
            "foo": "bar",
        }
        //callback is x
        // Will output  :   x({\"foo\":\"bar\"})
        c.JSONP(http.StatusOK, data)
    })
    // Listen and serve on 0.0.0.0:8080
    r.Run(":8080")
}

AsciiJSON

Using AsciiJSON to Generates ASCII-only JSON with escaped non-ASCII chracters.

func main() {
    r := gin.Default()
    r.GET("/someJSON", func(c *gin.Context) {
        data := map[string]interface{}{
            "lang": "GO语言",
            "tag":  "<br>",
        }
        // will output : {"lang":"GO\u8bed\u8a00","tag":"\u003cbr\u003e"}
        c.AsciiJSON(http.StatusOK, data)
    })
    // Listen and serve on 0.0.0.0:8080
    r.Run(":8080")
}