接口：

//POST请求 返回json 接口传参json
r.POST("/postJson", controller.PostUserInfo)

1.定义结构体

//定义结构体
type Search struct {
	Id   int
	Name string
}

2.结构体传参

//结构体传参
func PostUserInfo(c *gin.Context) {
	search := &Search{}
	err := c.BindJSON(&search)
	if err == nil {
		ReturnSucess(c, 200, "请求成功",search, 1)
		return
	}
	ReturnError(c, 500, gin.H{"err": err}, search, 1)
}

3.完整代码

package controller

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

//定义结构体
type Search struct {
	Id   int
	Name string
}


//结构体传参
func PostUserInfo(c *gin.Context) {
	search := &Search{}
	err := c.BindJSON(&search)
	if err == nil {
		ReturnSucess(c, 200, "请求成功",search, 1)
		return
	}
	ReturnError(c, 500, gin.H{"err": err}, search, 1)
}

4.接口测试及返回