环境
后端代码
package main
import (
"encoding/base64"
"github.com/gin-gonic/gin"
)
func main() {
engine := gin.Default()
imageBase64 := "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"
imageBuffer, _ := base64.StdEncoding.DecodeString(imageBase64)
engine.GET("/view", func(c *gin.Context) {
_, _ = c.Writer.WriteString(string(imageBuffer))
})
_ = engine.Run()
}
前端代码
<img src="http://localhost:8080/view">
效果